Version 1.11 (2021.08.03)
Original instructions

INSTRUCTION MANUAL

B-200/BT200type
Large Thru-Hole Power ChuckDANGER
・This instruction manual is for production engineers andmaintenance personnel in charge of operation of this product.
When a beginner uses this product, receive instructions fromexperienced personnel, the distributor or our company.
・Before installing, operating or maintaining this equipment,
carefully read this manual and the safety labels attached tothe equipment. Failure to follow these instructions and safety
precautions could result in serious injury, death, or property
damage.
・Store this manual near equipment for future reference.
・If any questions related to safety arise about this manual,please confirm them with the distributor or our company.

Kitagawa Corporation
77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,JapanTe l . +81-847-40-0561
Fax. +81-847-45-8911

Preface
This manual provides detailed information about how to safely and correctly use the power chuck (B-200/BT200 type)for a lathe.
Before starting to use this power chuck, read this manual carefully and always follow the instructions and warnings in"Important Safety Precautions" and "Precautions for Use" at beginning of the manual. Failure to follow theseprecautions could result in a serious accident.

Terms and Symbols Used for Safety Messages
In this manual, precautions for handling that are considered especially important are classified and displayed as shown below
depending on the damage of risk including the seriousness of the harm that could result. Please sufficiently understand themeanings of these terms and follow the instructions for safe operation.

Safety Alert Symbol
The triangle is the safety alert symbol used to alert you to potential safety hazards that could result in injury or death.

DANGER

Indicates a hazardous situation which, if you not avoided,
will result in death or serious injury.

WARNING

Indicates a hazardous situation which, if you not avoided,
could result in death or serious injury.

CAUTION

Indicates a hazardous situation which, if you not avoided,
could result in minor or moderate injury.

NOTICE

Indicates instructions which, if not avoided, could result indamage to the equipment or a shortened work life.

Liability and How to Use this ManualThis product is suitable for gripping a workpiece on the lathes or rotary tables. This product is equipped with the jaws toclamp the workpiece and they operate by means of a rotary cylinder. For any other applications, please contact us.
Our company will not assume responsibility for injury, death, damage, or loss resulting from not following the
instructions in this manual.
There are countless things that cannot or should not be done, and it is impossible to cover all of them in this manual.
Therefore, do not perform any actions unless they are specifically allowed in this manual. If any questions related tosafety arise about operation, control, inspection and maintenance which are not specified in this manual, please confirm
them with our company or distributor before performing them.

Guarantee and Limitation of Liability
The guarantee period of this product is 1 year after delivery.
Use the parts delivered by Kitagawa Corporation for all the parts including consumable parts. We will not assume
responsibility for injury, death, damage, or loss caused by usage of parts not manufactured by Kitagawa Corporation.
Additionally, if parts other than genuine parts manufactured by Kitagawa Corporation are used, this guarantee will becompletely invalid.
The chuck and cylinder from Kitagawa Corporation should be used together. If you must use a part not made by
Kitagawa, check with us or our distributor to be sure it is safe to do so. We will not be responsible for injury, death,damage or loss caused by use of a chuck or cylinder made by another company unless this use has been approved by
Kitagawa or its distributor.
1

Table of Contents
1. Structural Drawing and Parts List ………………………………………………………………

3

1-1. Type display
1-2. Structural drawing
1-3. Scope of product1-4. Parts list

Important Safety Precautions …………………………………………………………

6

3. Specifications ……………………………………………………………………………………

12

2.

3-1. Specifications
3-2. Relationship between gripping force and rotation speed
3-3. Relationship between gripping part center height, static griping force and input force /Relationship between top jaw mass moment and gripping force loss

4. Forming Soft Jaw ………………………………………………………………………………

21

4-1. Attachment of soft jaw
4-2. Forming soft jaw with outside diameter gripping
4-3. Forming soft jaw with inside diameter gripping
4-4. Forming method when you use forming jig

5. Usage ……………………………………………………………………………………………

24

5-1. Precautions during gripping work with chuck
5-2. Precautions during gripping work in irregular shape
5-3. Precautions related to usage of jaw
5-4. Precautions related to processing
5-5. Attachment of locator and jig

6. Maintenance and Inspection …………………………………………………………………

26

6-1. Periodic Inspection
6-2. Grease lubrication
6-3. Disassembling

7. Malfunction and Countermeasures ……………………………………………………………

28

7-1. In the case of malfunction
7-2. Where to contact in the case of malfunction

For Machine Tool Manufacturers (Chapter 8)

8. Attachment ………………………………………………………………………………………

29

8-1. Outline drawing of attachment
8-2. In the case that the back plate must be manufactured (B-200 /BT200 series)
8-3. In the case of with back plate (B-200A /BT200A series)
8-4. Attachment of chuck

9. Other Information ………………………………………………………………………………

36

9-1. About standards and orders
9-2. Information about markings of product9-3. About disposal

21 . Structural Drawing and Parts List
1−1 Type display
Type display as shown below

Ｂ-2 06 Ａ5 999
Design No.
Attachment shape
Straight spigot joint：−
A2−5
：A5
A2−6
：A6
：A8
A2−8
A2−11
：A1
A2−15（Former JIS）
：C5
A2−15（New JIS） ：K5
Chuck nominal diameter（inch）
B-200 series（3Jaw）
BT200 series（2Jaw）

Fig.1

1−2 Structural drawing
Plunger nut

Body

Master jaw

T nut Top jaw（Soft jaw. hard jaw.special jaw included）

Back plate

Cover
T nut
Draw nut

Attaching bolt
Wedge Plunger（This is referred toas a plunger here in）

Fig.2
3

B-200 type

BT200 type

1−3 Scope of productThis instruction manual is for the chuck part.

Cylinder

Chuck

Drain hose

Pressure adjusting
screw

Hydraulicpump

Pressuregauge

Line Filter

Flexible hose

Manualswitching valve
SOL.
Solenoid
valve

Tank

Fig.3

WARNING・ To prevent the work from flying, safe design, maintenance and erroneous action prevention of the hydraulicsystem to maintain the gripping force of the chuck is extremely important. Thoroughly read the Important Safety
Precautions on and after page 6 in this manual.
・ As for the cylinder, follow the instruction manual for the cylinder.

4

1−4 Parts list
5
17
3
23

22

9

15

13 20

4

16

19 12

6

7

1

2

8

18

11

21 14

10

Fig.4

Table 1
Part name

No.

Quantity

No.

Part name

Quantity

1

Body

1

13

Jaw attaching bolt

4 or 62

Wedge plunger

1

14

Chuck attaching bolt

3or4or6

3

Master jaw

2 or 315

Set screw

1

4

Soft jaw

2 or 316

Steel ball

1

5

T nut

2 or 317

Grease nipple

6

Plunger nut

1

18

Hex key

1

7Draw nut

1

19

Hex key

1

8

Cover

1

20

Hex key

19Coil spring1

21

Hex key110Handle1

11

Socket head button screw

3 or 422

Back plate

1

12

Socket head cap screw

6

23

Socket head cap screw

22, 23 are only supplied if there is a back plate.
5

2 or 33or4or6

2.

Important Safety Precautions

Important safety precautions are summarized below. Please read this section before firststarting to use this product.

DANGER

Failure to follow the safety precautions below will result inserious injury or death.

Turn off main power supply before attaching, inspecting or replacing chuck,and before adding oil.
For All Users
・The chuck may start rotation suddenly,
and a part of the body or clothing may becaught.

Main power supply

OFF
ON

Lathe

OFF

Close door before rotating spindle.
・If the door is not closed, you may touch
the rotating chuck or the work may fly out,
which is very dangerous. (In general, thesafety interlock function which allows
rotation only when the door is the manualmode or the test mode)

For All Users

Close
Lathe

During spindle rotation, do not turn off hydraulic pump power supply
and do not operate switching valve.
For All Users
・Cutting off hydraulic pressurecauses a drop in the gripping
force which could result in thework being released and flyingout.
・Operatingthemanualswitching valve or solenoid
valve will lead to a drop of
hydraulic pressure.

Manual switching valve
Jaw
closed

NO

Work

Jaw
open

ON
OFF

Solenoid valve
6

DANGER

Failure to follow the safety precautions below will result inserious injury or death.

Do not allow the rotation speed of the chuck to exceed the maximum allowablespeed limit. (Refer to pages 13-20)
For All Users
・If the rotation speed of the chuck exceeds
the rotation speed limit, this is very
dangerous as the chuck and work will flyout.

Fly outWork

The input force of the chuck (piston thrust, pulling force of the draw pipe)
must not exceed the allowable maximum input force.
For All Users(Refer to pages 13-20)
・Input must match the specification of
the chuck.
・Adjust the hydraulic pressure to thecylinder so that the input force, which
determines the gripping force of thechuck, does not exceed.
・Excessive input force can lead tobreakage of the chuck, which is very
dangerous, as the chuck can work
can be damaged and fly out.

CylinderDraw pipe

Fly out

Allowable maximum
input force or less

Work
Chuck

If you use the chuck with the inside diameter gripping, input force (hydraulicpressure) must be 1/2 or less of the allowable maximum input.
For All Users(Refer to page 20)
・The chuck may break and the chuckor work could fly out.

Input force (hydraulic pressure)
to be 1/2 or less

DOW

N

PRESSURE
GAUGE

7

Important Safety Precautions

DANGER

Failure to follow the safety precautions below will result inserious injury or death.

Keep the height of the jaw within the range specified in the gripping force limit table (Refer to page 17-19).
If you must use a jaw taller than a standard soft jaw, use less than the input (piston
For All Users
thrust force, draw pipe drawing force) specified in the gripping force limit table.
・Do not use a jaw of a height out of
the range of the gripping force limit
table or a jaw with mass moment outof the range of the gripping force
limit table. The chuck will break andthe chuck and work will break and flyout.

Standard soft
jaw height

Special top jaw height

Lower the hydraulicpressure when using
a tall jaw

DOW

N

Work

When the protrusion of the work is long, support it withthe steady rest or center.

For All Users
Tail stock・If the protrusion islong, the tip of thework can turn andthe work fly out.

Steady rest

CenterDetermine the gripping force required for processing by the machine tool manufacturer or user,
and check that the required gripping force is provided before processing.
For All Users(Refer to pages 16-20 and cylinder manual)

Fly out

・Adjust the hydraulic pressure to thecylinder to obtain the required gripping
force. If the gripping force is insufficient,
this is dangerous as the work will fly out.

Work

In case that a combination of cylinder is changed by model change,
it is necessary to change setting pressure.
For Machine Tool Manufactures
・If it's used at the low setting pressure andthe gripping force isn't enough against the
cutting torque or centrifugal force can leadto breakage of the chuck, which is very
dangerous, as the work can be fly out.
・If it's used at the excessive setting pressure
can lead to breakage of the chuck, which isvery dangerous, as the chuck or work can
be damaged and fly out.

Change Setting Pressure

Fly out

WN

DO

UP

DANGER
8

DANGER

Failure to follow the safety precautions below will result inserious injury or death.

Use of a chuck and cylinder that cannot be used together safely may cause
the cylinder to break at high pressure resulting in the chuck
For All Users
and work flying out.
・Check that the chuck and the cylinder are in the safe combination when using at high pressure with our company
or the distributor. Especially when the cylinder of our company and a high pressure chuck of other company are
combined, confirmation is necessary.
・If one of the abnormal events shown below occurs during
CylinderChuck
operation, immediately stop the machine and consult with ourcompany or the distributor.
Fly out
・ The work slips.
・ Loss of accuracy.
・ The work begins to chatter.
Work・ The machine's vibration significantly increases.
・ The griping force does not rise even if hydraulic pressure is raised.

In the case of processing a significant unbalanced work,
lower the rotation speed.

For All Users

Unbalanced work

・Unbalanced work generates dangerous
centrifugal forces and the work could flyout.

Fly out

Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, thebolt will break, which is dangerous as the chuck or work will fly out. Use the
For All Users
bolts attached to the chuck, and do not use bolts other than these.
・If the torque is insufficient or excessive,the bolt will break, which is dangerous as
the chuck or work will fly out.
・Fix the lathe spindle or the chuck when
you tighten bolts. Your hand could slip andget injury when you work without fixing thespindle.
・You cannot control the torque by a hex
key. You must use a torque wrench fortorque control.

Specified torque for socket head cap screw
Bolt size
M5
M6
M8
M10

Tightening torque
7.5 N・m13 N・m33 N・m73 N・mTightening torque
T＝F×L＝127×0.1＝12.7（N・m）

Bolt size
M12
M14
M16
M20

Tightening torque
107 N・m
171 N・m
250 N・m402 N・m

F＝127（N）（13kgf）

0.1（

m）

L＝

・Tightening torque is moment of force when you tighten a bolt. Tightening torque= F×L.

9

Important Safety Precautions

DANGER

Failure to follow the safety precautions below will result inserious injury or death.

Provide sufficient strength for the draw pipe (Refer to pages 30-31).
Provide sufficient screw depth for the draw pipe.
For Machine Tool Manufactures
Firmly tighten the draw pipe.
・If the draw pipe break, the gripping force isinstantly lost and this is dangerous as work will
fly out.
・If the screw depth of the draw pipe isinsufficient, the screw will break and thegripping force will be lost instantly, and this isdangerous as work will fly out.
・If the engagement of the screw of the draw
pipe is loose, vibration may occur resulting in
breakage of the screw. If the screw breaks, thegripping force will be lost instantly, which isdangerous as the work will fly out.
・If the draw pipe is unbalanced, vibration
occurs, the screw is broken and the gripping
force will be lost instantly, which is dangerous
as the work will fly out.

Cylinder adapter
CylinderDraw pipe

Chuck

Back plate

Use a cylinder with a lock valve (safety valve, check valve) incorporated in case of
sudden hydraulic pressure drop due to blackout, malfunction of the hydraulic pump, etc.
Further, use a solenoid valve with a circuit that retains the
For Machine Tool Manufactures
gripping position when no current is carried.
・If the hydraulic pressure suddenly drops
due to blackout or malfunction of thehydraulic pump, etc., this is dangerous aswork will fly out.
・Lock valve retains the hydraulic pressure
inside the cylinder temporarily, when thehydraulic pressure suddenly drops due toblackout or malfunction of the hydraulicpump, etc.

Lightning＝Blackout

Loosening

Gripping

Lock valve
CylinderP

Solenoid valve

The grlipping position
must be retained.

10Important Safety Precautions

WARNING

Failure to follow the safety precautions below could result inserious injury or death.

Do not modify the chuck in a way not permitted
by the manufacturer.

For All Users

・It may not only break the chuck but thechuck and the work may fly out, which isdangerous.
・If you attach a locator or jig on the chuck
body surface, only process work in an
acceptable range (Refer to page 25).

NO

Periodically supply adequate grease (Refer to page 26). Turn off power before
adding grease.
For All Users
・Insufficient grease supply lowers thegripping force, causes operation failure due
to lower hydraulic pressure, lowers thegripping precision, and causes abnormal
wearing and seizing, etc.
・This is dangerous as the work could fly out
from a drop in the gripping force.

Grease gun
Grease nipple

Do not operate the machine wearing gloves,a necktie, and other loose
For All Users
clothing or jewelry.

Do not operate the machine after
drinking alcohol or
For All Users
taking medication.

・Dangerous since it will
be caught.

・Dangerous sincethese lead tooperation mistakes
and misjudgment.

Alcohol

Medication

Do not grip a chuck with a chuck.
・Because it is easy to confuse the specifications ofeach chuck and the protrusion become long and is
apt to raise rotation speed, it is apt to exceed thespecifications of the base chuck. The chuck may
break and the chuck or work could fly out.

11

For All Users

3 . Specifications
3−1 Specifications

Table 2

・B-200 type
B-204

B-205

B-206

B-208

B-210

B-212

B-215

Plunger stroke

Type
mm

10

10

12

16

19

23

23

Jaw stroke（in diameter）

mm

5.4

5.4

5.5

7.4

8.8

10.6

10.6

kN

Maximum static gripping force (kgf)14(1428)
28.5(2906)

17.5(1784)
36(3671)

22(2243)
57(5812)

34.8(3549)
86(8769)

43(4385)
111(11319)55(5608)
144(14686)98(9993)
249(25391)

Allowable maximum rotation
speed

min

8000

7000

6000

5000

4200

3300

2800

mm

26

33

45

52

75

91

100

mm

24

26

29

39

43

51

61

Allowable maximum input force(kgf)kN-1

Thru-hole diameterStandard soft jaw height(Z axis)Gripping range(outside diameter gripping)Mass(standard soft jaw included)

Moment of inertia
Matching cylinder ①

mm
kg
2

kg・m
※2

MPa
Maximum hydraulic pressure(kgf／cm2)(with matching cylinder)

Matching cylinder ②

φ7〜110 φ12〜135 φ16〜169 φ13〜210 φ31〜254 φ34〜304 φ50〜381
4

6.7

11.9

22.3

34.5

55.3

116

0.007

0.018

0.058

0.170

0.315

0.738

2.20

F0933H

F0933H

S1246

S1552

S1875

S2091

F2511H

2.80(28.6)

3.43(35.0)

2.80(28.6)

2.65(27.0)

2.7(27.5)

2.7(27.5)

3.3(33.7)

SR1146SR1453

SR1675SR2010

3.1(31.6)

3.4(34.7)

3.3(33.7)

3.1(31.6)※2MPa
Maximum hydraulic pressure(kgf／cm2)(with matching cylinder)
Balance quality(standard soft jaw not included)Storeing temperature /Operating temperature

G6.3−20〜＋50℃ / −10〜＋40℃

Reference: 1kN = 101.97kgf 1MPa = 10.197kgf/cm2※ 1. When storing this product, the product should be subjected to the antirust treatment and stored in a place free fromwetting, condensation, or freeze.
※ 2. After checking a cylinder that is being used, please set the hydraulic pressure.

Table 3

・BT200 type
Type
Plunger strokemm

Jaw stroke（in diameter）

mm

Standard soft jaw height(Z axis)Gripping range(outside diameter gripping)Mass(standard soft jaw included)

Moment of inertia
Matching cylinder ①

BT206

BT208

BT210

BT212

10

12

16

19

23

5.4

5.4

5.5

7.4

8.8

10.6

11.7
(1193)
24(2447)

14.5(1479)
38(3875)

23.2(2366)
57.3(5843)

28.5(2906)
74(7546)

36.7(3742)
96(9789)

8000

7000

6000

5000

4200

3300

mm

26

33

45

52

75

91

mm

24

26

29

39

43

51

mm

φ9〜110

φ14〜135

φ17〜169

φ17〜210

φ38〜254

φ41〜304

kg

3.8

6.5

11.5

21.3

33.5

52

2

0.006

0.017

0.056

0.165

0.308

0.700

F0933H

F0933H

S1246

S1552

S1875

S2091

1.94
(19.8)

2.38(24.3)

1.85(18.9)

1.80(18.4)

1.80(18.4)

1.81(18.5)

SR1146SR1453

SR1675SR20102.1(21.4)

2.4(24.5)

2.3(23.5)

2.2(22.4)

kg・m※2

Maximum hydraulic pressure
MPa(with matching cylinder)(kgf／cm2)

Matching cylinder ②

BT205

10
9.3
(948)
19
(1937)

kN
Allowable maximum input force(kgf)kN
Maximum static gripping force (kgf)
Allowable maximum rotation
-1
min
speed

Thru-hole diameter

BT204

※2

Maximum hydraulic pressure
MPa(with matching cylinder)(kgf／cm2)
Balance quality(standard soft jaw not included)Storeing temperature /Operating temperature

G6.3−20〜＋50℃ / −10〜＋40℃

Reference: 1kN = 101.97kgf 1MPa = 10.197kgf/cm2※ 1. When storing this product, the product should be subjected to the antirust treatment and stored in a place free fromwetting, condensation, or freeze.
※ 2. After checking a cylinder that is being used, please set the hydraulic pressure.
12

・B-200A type

Table 4B-206A5

B-208A6

B-210A6

B-210A8

B-212A6

B-212A8

Plunger stroke

Type
mm

12

16

19

19

23

23

Jaw stroke（in diameter）

mm

5.5

7.4

8.8

8.8

10.6

10.6

kN

Maximum static gripping force (kgf)

22(2243)
57(5812)

34.8(3549)
86(8769)

43(4385)
111(11319)43(4385)
111(11319)55(5608)
144(14684)55(5608)
144(14684)

Allowable maximum rotation
speed

min

6000

5000

4200

4200

3300

3300

mm

45

52

75

75

91

91

mm

29

39

43

43

51

51

mm

φ16〜169

φ13〜210

φ31〜254

φ31〜254

φ34〜304

φ34〜304

kg

13.7

23.6

41.5

40.0

67.0

64.0

Allowable maximum input force(kgf)kN-1

Thru-hole diameterStandard soft jaw height(Z axis)Gripping range(outside diameter gripping)Mass(standard soft jaw included)

Moment of inertia

2

kg・m

0.063

0.178

0.325

0.323

0.780

0.765

S1246

S1552

S1875

S1875

S2091

S2091

MPa
Maximum hydraulic pressure(kgf／cm2)(with matching cylinder)

2.80(28.6)

2.65(27.0)

2.70(27.5)

2.70(27.5)

2.70(27.5)

2.70(27.5)

Matching cylinder ②SR1146SR1453

SR1675

SR1675SR2010SR2010

3.1(31.6)

3.4(34.7)

3.3(33.7)

3.3(33.7)

3.1(31.6)

3.1(31.6)

Matching cylinder ①

※2

※2

MPa
Maximum hydraulic pressure(kgf／cm2)(with matching cylinder)
Balance quality(standard soft jaw not included)Storeing temperature /Operating temperature

G6.3−20〜＋50℃ / −10〜＋40℃
2

Reference: 1kN = 101.97kgf 1MPa = 10.197kgf/cm※ 1. When storing this product, the product should be subjected to the antirust treatment and stored in a place free fromwetting, condensation, or freeze.
※ 2. After checking a cylinder that is being used, please set the hydraulic pressure.

3−2 Relationship between gripping force and rotation speed
１．Maximum static gripping force
The static gripping force is the gripping force when the chuck is at a stop.
The power chuck has a mechanism to convert input force (piston thrust force, draw pipe drawing force) from the cylinder
to gripping force. Therefore, the gripping force when the allowable maximum input force becomes the maximum static
gripping force.
However, the gripping force is different depending on the state of grease lubrication, grease in use, height of the jaw,
etc. The maximum static gripping force specified in the specification is the value under the following conditions:・The Kitagawa standard soft jaw is used as the jaw.
・The attaching bolts of the soft jaw are tightened at thestandard soft jaw
AB
specified torque. (Refer to page 9)
A=B・The numerical values are obtained with the Kitagawa
gripping force meter . The gripping position of thegripping force meter is at a position 1/2 of the height ofthe soft jaw top surface (height from the chuck surface Allowablemaximumto the top surface of the jaw).
input force
・CHUCK GREASE PRO is used. (Refer to page 26).
・A variable displacement pump with the discharge
Kitagawa gripping
volume of 20 liters/min or more is used as the hydraulicforce metersource. The pressure is set by the pressure control
equipment of the pump itself, or the pressure reduction
valve equipped separately.
Tighten at specified torque

Fig.5
13

GREASE LUBURICATION

２．Allowable maximum rotation speed
In the case of outside diameter gripping, when the chuck is rot ated, the gripping force lowers due to the centrifugal forceof the top jaw. Therefore, the rotation speed when the dynamic gripping force (gripping force during rotation) becomesapproximately 1/3 of the maximum static gripping force is set as the allowable maximum rotation speed. The centrifugal
force is different depending on the mass of the top jaw and the barycentric position as well as the rotation speed. The
allowable maximum rotation speed specified in the specification is the value under the following conditions:・The Kitagawa standard soft jaw is used.
・Grip the gripping force meter in the center of the jaw stroke, and at this point, the soft jaw is attached at the position
where the periphery side end of the soft jaw and the chuck periphery are almost lined up.
・The numerical values are obtained by the Kitagawa gripping force meter. The gripping position of the gripping force
meter is at a position 1/2 of the height of the soft jaw top surface (height from the chuck surface to the top surface ofthe jaw).

DANGERTo avoid serious accidents caused by the chuck or work flying out:・Determine the gripping force required for processing by the machine tool manufacturer or user, and check thatthe required gripping force is provided before processing. The gripping force of the chuck must not exceed the
maximum static gripping force.
・Determine the rotation speed required for processing by the machine tool manufacturer or user based on thegripping force required for the processing. The rotation speed at this point must not exceed the allowablemaximum rotation speed.

NOTICE留
意・When determining the cutting conditions, refer to pages 14-20.
・Pay attention since the gripping force is different depending on the state of the oil supply, grease in use, height of
the jaw, performance of the pump and the pressure reducing valve, piping state, etc.

3．Relationship between gripping force and rotation speed
As the rotation speed becomes higher, the centrifugal force of the jaw increases and the gripping force lowers. The
curves displayed in Fig. 6, Fig. 7 shows relationships between the rotation speed and the centrifugal force when using
the standard soft jaw. The centrifugal force differs significantly depending on the size and shape of the top jaw and theattaching position, therefore, when the rotation speed is high, actual measurement using a Kitagawa gripping force
meter is required.

・B-200 type

B-205

B-204

40

25

Input force

20

12k

36
35

14k

Gripping force(kN)

Gripping force(kN)

30
28.5

N

N

10k
N
9kN
8kN
7kN
6kN
5kN
4kN

15
10
5

2000

3000

4000

20

5000

6000

Rotation Speed（min-1）

7000

8000

0

22k

20k
N
18k
N
16k
N
14k
N
12k
N
10k
N
8kN
6kN

30
20
10

0

1000

2000

3000

N

1000

Rotation Speed（min-1）

3000

50
40
30

5000

10

6000

0

4000

5000

Rotation Speed（min-1）

6000

7000

34.
8kN
32k
30k N
N
27k
N
24k
N
21k
N
18k
N
15k
N
12k
N

60

20

4000

2000

Input force

70

Limit

N

Limit

90
86
80

Input force

40

9kN
8k

7k N
6kNN

B-208

B-206

50

10k

15

5

Gripping force(kN)

Gripping force(kN)

60
57

1000

17.
5kN
16k
N
14k
N
12k
N

25

10

Limit
0

Input force

30

Limit
1000

2000

3000

Rotation Speed（min-1）

4000

5000

14

B-210

B-212

120

160
144
140

111

Input force

43k
39k N
N
35k
N
31k
N
27k
N
23k
N
19k
N
15k
N
11k
N

80
60
40
20

0

1000

Gripping force(kN)

Gripping force(kN)

100

55k
N
50k
N
45k
N
40k
N
35k
N
30k
N
25k
N
20k
N
15k
N

100

2000

3000

4000
4200

Rotation Speed（min-1）

B-215

Input force

120

80
60
40

Limit

20

5000

0

Limit
1000

2000

3000

Rotation Speed（min-1）

3300

249

Input force

98k
N
90k
N
80k
N
70k
N

Gripping force(kN)

200

60k
N
50k
N
40k
N
30k
N
20k
N

100

0

Limit

1000

2000

3000
2800

Rotation Speed（min-1）

Fig.6

・BT200 type
BT205

BT204

25
24

20
19

Input force
Gripping force(kN)

Gripping force(kN)

kN

8kN
7kN
6kN

10

Input force

20

9.3

5kN
4kN
3kN

11.

7kN

10k
N
9kN

8kN
7kN
6kN
5kN
4kN

10

3kN

Limit
0

BT206

1000

2000

3000

4000

5000

6000

7000

Rotation Speed（min-1）

13k

Gripping force(kN)

14.

5kN

12k N
11k N

10k N
9kNN
8kN
7kN
6kN

20

10

5000

6000

7000

1000

2000

3000

4000

5000

23.
2k
22k N
N
20k
N
18k
N
16k
N
14k
N
12k
N
10k
N
8kN

40
30
20

6000

0

Rotation Speed（min-1）

Limit
1000

2000

3000

4000

5000

Rotation Speed（min-1）

BT210

BT212
100
96

80
74

Input force

Gripping force(kN)

Gripping force(kN)

Llimit4000

Input force

50

10

Limit

28.

5kN

60

25k
N
22k
N
19k
N
16k
N
13k
N

40

10k

20

7kN

1000

N

2000

3000

4000
4200

Input force

36.
7k
34k N
N
31k
N
28k
N
25k
N
22k
N
19k
N
16k
N
13k
N

80

60

40

20

Limit

Rotation Speed（min-1）

15

3000

60
57.3

30

0

2000

BT208
Input force

0

1000

Rotation Speed（min-1）

40
38

Gripping force(kN)

0

8000

Limit
0

5000

Fig.7

1000

2000

Rotation Speed（min-1）

3000

3300

DANGER・In the case of processing a considerably unbalanced work, lower the rotation speed. The work will fly out and this isdangerous.
・Vibration is generated if there is unbalance due to the work and the jig, etc. Vibration decreases process precision andshortens the working life of the chuck, even possibly breaking it. Correct the unbalance by using a balance weight,
etc., or lower the rotation speed for use.
・In the case of heavy cutting at high rotation speed, vibration is easily generated in the same manner as the unbalanceof the chuck, therefore, set the cutting conditions appropriate for the dynamic gripping force and machine rigidity.

3-3 Relationship between gripping part center height, static griping force and input
force / Relationship between top jaw mass moment and gripping force loss
If the gripping part center height of the used top jaw (dimension H in Fig. 8) is higher than the gripping part center height of thestandard soft jaw, a large load is applied to the master jaw, T nut, jaw attaching bolts, etc. To prevent these parts from being
broken, it is necessary to use the machine by using a lower input force than the allowable maximum input force.
Additionally, if the top jaw is larger and heavier, the centrifugal force generated at the top jaw will increase. It is necessary to
examine the dynamic gripping force considering the centrifugal force and to use the machine at a rotation speed that canwithstand the cutting force.

G
A

r

r

G

B
Work

Chuck

Chuck

H

A=B

G: Center of mass of the top jaw
m: Mass of the top jaw
r : Distance from the center of mass of the top jaw to the chuck center
H : Gripping center height

Fig.8

DANGER・Keep the height of the top jaw within the range of the gripping force limit table. (Refer to Fig.9,10)
・If a top jaw is taller than the standard soft jaw, use it at the input force (piston thrust force, draw pipe drawing
force) specified in the gripping force limit table. If it is used without lowering the input, the chuck will break andthis is dangerous as the chuck and work will fly out.

16

・B-200 Type B-204

Input force
Static gripping force（kＮ）

19

Gripping force loss（kＮ）

-1

in -1
m
00 min -1
80 500 min -1
7 000
min
7
00
65 00min -1
60
0min
-1
550
min
-1
5000
min
0
0
-1
5
4
in
4000m
-1
3500min-1
3000min -1
2500min -1
2000min

15

10

5

0

20

10

Standard soft top jaw

30

30

14kN

28.5

Limit

12kN
10kN
9kN
8kN
7kN
6kN
5kN
4kN

20

10

24

12.5

40

0

50

10

20

Standard soft top jaw

Mass moment of top jaw
m×r×3（㎏・㎜）

30

Static gripping force（kＮ）

00

70

15
10
5

n -1
mi
00
65 00min
-1
in
60
0m
-1
550
0min
0
-1
50
min
-1
4500
in
4000m
-1
in
3500m
-1
3000min-1
2500min-1
2000min
1500min-1

0

20

30

Standard soft top jaw

Gripping force loss（kＮ）

30
20
10

0

60

Standard soft top jaw

Gripping force loss（kＮ）

100

10kN
9kN
8kN
7kN
6kN
5kN

20

10

50

10

0

-1

0min

400

30

-1

min

3500

-1

in

3000m

20

-1

2500min-1

2000min-1
1500min

10

40

50

14

Limit

29
50

Gripping part center height H（㎜）Input force

-1

450

30

Gripping part center height H（㎜）10Standard soft top jaw

-1

min

20

22kN
20kN
18kN
16kN
14kN
12kN
10kN
8kN
6kN

0

in

m
00

10

57

90

50
50

12kN

120

Mass moment of top jaw
m×r×3（㎏・㎜）

B-208

40

80

Limit

Input force

-1

40

14kN

Standard soft top jaw

0min
-1
550
min
-1
5000
min
4500
-1
in
4000m
-1
3500min-1
3000min-1
2500min -1
2000min -1
1500min
20

30

0

-1

in

0m

600

36

17.5kN
16kN

13.5

60

50

Mass moment of top jaw
m×r×3（㎏・㎜）

B-206
38

40

Static gripping force（kＮ）

20-1

Static gripping force（kＮ）

Gripping force loss（kＮ）

-1

n
mi

50

Input force

40
24

40

Gripping part center height H（㎜）

86

80
70
60
50
40
30

34.8
kN
32kN
30kN
27kN
24kN
21kN
18kN
15kN
12kN

Limit

9kN

20
10

39
0

200

Standard soft top jaw

280

0

10 20 30 40 50 60 70 80

Standard soft top jaw

Gripping part center height H（㎜）Mass moment of top jaw
m×r×3（㎏・㎜）

Fig. 9-1
Input force

B-210

120

74

--1

50

in
m -1
00 in
42 00m
40

40

35

-1

n

mi

00

3

-1

in

m
000

30

-1

min

2500

20

--1

00min

20

-1

160

240

Standard soft top jaw

17

320

35kN

90

31kN

80

27kN

70

23kN

60

19kN

50

15kN

40

11kN

30

10

1000min

40 80

Limit

39kN

100

20

-1

1500min

10

0

Static gripping force（kＮ）

Gripping force loss（kＮ）

60

111

110

70

43kN

400

480

Mass moment of top jaw
m×r×3（㎏・㎜）

560

22
0

10

20

Standard soft top jaw

43
30

40

50

60

70

80

Gripping part center height H（㎜）

B-212
-1

in

m
00

Gripping force loss（kＮ）

80

33

-1

min

00

30

60

-1

in
00m

25

-1

in

40

m
2000

-1

1500min20-1

1000min -1
750min
200

400

600

Standard soft top jaw

Gripping force loss（kＮ）

1000

120

-1

n

mi

00

24

-1

in
00m

100

20

80

-1

min

1600

60

-1

1200min-1
1000min40

700min -1
500min
-1

20
0

1000

Standard soft top jaw

2000

30kN
25kN
20kN
15kN

26

51

10 20 30 40 50 60 70 80

Gripping part center height H（㎜）Input force

-1

0
28

Limit

40kN
35kN

Standard soft top jaw

in

0m

140

55kN
50kN
45kN

144

0

1200

Mass moment of top jaw
m×r×3（㎏・㎜）

B-215
166
160

800

250

Static gripping force（kＮ）

0

Input force

160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10

Static gripping force（kＮ）

96

98kN
90kN

249

200

70kN

60kN

150

50kN
40kN

100

30kN
20kN

50

31
0

3000

20

61
40

Standard soft top jaw

Mass moment of top jaw
m×r×3（㎏・㎜）

Limit

80kN

60

80

100

Gripping part center height H（㎜）Fig.9-2
・BT200 Type
Input force
12.7

-1

in

m

Gripping force loss（kＮ）

Static gripping force（kＮ）

BT204
0
00

8

10

-1

in

-1
m
n -1
00
mi
in
00
-1
70 00m
in
65
-1
0m
600
0min
-1
550
min
-1
5000
min
0
-1
45 0
in
4000m
-1
3500min-1
3000min-1
2500min -1
2000min

75

5

0

20

10

Standard soft top jaw

20

9.3kN

19

7kN

6kN
5kN

10

4kN
3kN

12.5
30

0

BT205

0

10

20

10

0

40

50

40

50

60

Standard soft top jaw Mass moment of top jaw
m×r×2（㎏・㎜）

0

70

10

20

30

40

50

Gripping part center height H（㎜）Input force

in
-1
0m
0min
-1
550
min
-1
5000
min
4500
-1
in
4000m
-1
3500min-1
3000min-1
2500min-1
2000min-1
1500min30

10Standard soft top jaw

600

20

Limit

10kN
9kN
8kN
7kN
6kN
5kN
4kN
3kN

20

13.5

-1

10

30

Gripping part center height H（㎜）11.7kN24

40

Mass moment of top jaw
m×r×2（㎏・㎜）

BT206
25.3

30

20

Standard soft top jaw

Gripping force loss（kＮ）

Static gripping force（kＮ）

5

Static gripping force（kＮ）

Gripping force loss（kＮ）

-1

-1
in
0m min -1
00
min
-1
65
0
in
600
0m
-1
550
0min
0
-1
0
5
min
-1
4500
in
4000m
-1
in
3500m
-1
3000min-1
2500min-1
2000min -1
1500min

0
70

10

20

Input force

16
15

24

10

Standard soft top jaw

Mass moment of top jaw
m×r×2（㎏・㎜）

Limit

8kN

80

14.5k
N
13kN
12kN
11kN
10kN
9kN
8kN
7kN
6kN
5kN
4kN

38
30
20
10

14
0

10

Standard soft top jaw

Limit

29
50

Gripping part center height H（㎜）Fig.10-1
18Input force

BT208

60

Static gripping force（kＮ）

Gripping force loss（kＮ）

38.2
-1

30

min

00

50

-1

in

0m

450

-1

min

0
400

20

-1

min

3500

-1

in
3000m
-1
2500min-1
2000min-1
1500min10

57.3 23.2kN
22kN
20kN
18kN
16kN
14kN
12kN
10kN
8kN
6kN

50
40
30
20
10

39
0

180

100

Standard soft top jaw

0

10 20 30 40 50 60 70 80

Standard soft top jaw

Gripping part center height H（㎜）Mass moment of top jaw
m×r×2（㎏・㎜）

Input force

BT210

80

40

Static gripping force（kＮ）

49.3

Gripping force loss（kＮ）

Limit

-1

in
m -1
00 in
42 00m
40

30

35

-1

in

m
00

-1

in

0m

300

20

-1

min
2500

-1

10

kN

74

70

Limit

25kN
22kN

60

19kN

50

16kN

40

13kN

30

10kN

7kN

20

in
2000m

28.5

-1

1500min

10-1

1000min

0

40

80

120

160

200

22
240

280

320

0

360

10

20

Standard soft top jaw

Standard soft top jaw

43
30

40

50

60

70

80

Gripping part center height H（㎜）Mass moment of top jaw
m×r×2（㎏・㎜）
110

3

-1

n

mi

0
30

50

Static gripping force（kＮ）

Gripping force loss（kＮ）

BT212
64
60

-1

min
00

30

-1

40

min
500

2

30

-1

min

2000

20

1500min

10

1000min

-1

-1

100

0

200

300

400

500

700

Standard soft top jaw

90

800

Input force
36.7k
N
34kN
31kN
28kN
25kN
22kN
19kN
16kN
13kN
10kN

96

80
70
60
50
40
30

Limit

20
10

750min-1
600

100

26

51

0 10 20 30 40 50 60 70 80

Standard soft top jaw

Gripping part center height H（㎜）Mass moment of top jaw
m×r×2（㎏・㎜）

Fig.10-2

NOTICE
Analysis of the gripping force, input force and rotation speed using Fig. 9, Fig 10 is carried out as shown below.
-1・For example, in the case of B-206 standard soft jaw (mass moment 39kg・mm), it cannot exceed 6000min(rpm), and the gripping force loss due to the centrifugal force at this rotation speed is 38kN (approx. 3875kgf).
The required static gripping force for the dynamic gripping force (gripping force loss by static gripping force centrifugal force) to become 1/3 of the static gripping force is 57kN, and the required input to obtain this gripping
force is 22kN. However, it is necessary to use at the gripping part center height H=14 mm or less.
・If the gripping part center height H is high, it is necessary to lower the static gripping force.
・If the top jaw mass moment is large, the rotation speed needs to be lowered.
・If the rotation speed is high, the gripping force loss due to the centrifugal force becomes large. The centrifugal
force is proportional to the square of the rotation speed.

19

The required static gripping force and input force required at the rotation speed in use are predicted from Fig.9, Fig 10,
however, it contains a number of hypothetical conditions. Therefore, it is necessary to only use these as reference, andthe processing conditions must be determined after trial cutting without fail.

DANGER
・Reduce the allowable maximum input force of the 2 jaw chuck by 2/3 in comparison with the 3 jaw chuck. (Refer
to Table 3) Otherwise the chuck will break, the work will fly out and this is dangerous.
・In the case of inside diameter gripping, keep the input to 1/2 of the allowable maximum input or less. In the caseof inside diameter gripping, the length of engagement of the master jaw and the dovetail groove is shorter whencompared to the outside diameter gripping, therefore, the chuck will break, the work will fly out and this isdangerous.
・In the case of using only 1 jaw for gripping reduce the input force by 2/3 or more with 3 jaw chuck. If 2 jaws areused for gripping reduce the input force by 1/3 or more with 3 jaw chuck. If 1 jaw is used for gripping reduce theinput force by 1/2 or more with 2 jaw chuck. If it is used without lowering the input, the input which is normallyapplied evenly onto 3 of the jaws is concentrated onto 1 or 2 of the jaws. Otherwise the chuck will break, the work
will fly out and this is dangerous.

20

4 . Forming Soft Jaw
4−1 Attachment of soft jaw
The attaching position of the soft jaw can be adjusted by loosening the socket head cap screw, attaching the soft jaw
and by changing each serration engagement position.
Use the most appropriate soft jaw considering the shape, dimension, material, and surface roughness of the work andthe cutting conditions, etc.

DANGER
・Use the T nut so that it does not come out from the master jaw. (Refer to Fig.11)
・It if the T nut comes out from the master jaw, the master jaw and T nut will break causing the work to fly out anda possible precision failure.

Soft jaw
T nut

Hard jaw
T nut

Body

Body

Body

（Incorrect）

Body（Correct）

Fig.11

・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, whichis dangerous as the chuck or work will fly out.

Table 5Bolt size
M5
M6
M8
M10

Tightening torque
7.5 N・m13 N・m33 N・m73 N・mBolt size
M12
M14
M16
M20

Tightening torque
107 N・m
171 N・m
250 N・m402 N・mDANGER

0〜1mm

Top jaw attaching bolt
・If the screw-in depth of the jaw attaching bolt to the T nut is shallow, the T nut will
break, and this is dangerous as the jaw and work will fly out. If the attaching bolt is
Top jaw
too long and comes out from the bottom of the T nut as well, this is dangerous as
the jaw and work will fly out since the top jaw is not fixed. Therefore, the overall
length of the jaw attaching bolt must be approximately 0 to -1mm from the bottomof the T nut (Refer to Fig.12).
・Use the T nut and the attaching bolts attached to the chuck and do not use bolts
other than these. If commercially available bolts are used for an unavoidable
reason, use bolts at the strength classification 12.9 (strength classification 10.9 forM22 or more) or more, and pay sufficient attention to the length.
T nut
Fig.12・Do not rotate the chuck so that the T nut is loosened causing the jaw to fly out.
・Check that the reference mark on the side of the No. 1 master jaw is within the range of the entire stroke as shown in Fig. 13. Full
stroke the jaw at least once a day to check it before work or when supplying grease, etc. If it goes out of the range of appropriate
stroke due to loosening of the draw nut, etc., the work may not be gripped, and this is dangerous as the work will fly out.
・When gripping the work, use it by keeping the position of the master jaw within the
Reference
appropriate stroke range. Gripping in the center of the stroke is the most stable forthe mechanism, and the best precision can be obtained.
・When gripping near the stroke end, the work may not be gripped sometimes
according to the deviation, etc., of the gripping part allowance of the work, and thisEntire strokeis dangerous as the work will fly out.
Appropriate stroke・When gripping near the stroke end, the chuck may break and the chuck or work
Master jaw
Fig.13
could fly out.
1

Table 6

21

Type

B-204
BT204

B-205
BT205

B-206
BT206

B-208
BT208

B-210
BT210

B-212
BT212

B-215

Appropriate stroke range（mm）

1

1

1

2

2.3

3

3

4−2 Forming soft jaw with outside diameter gripping
１．Preparation of the plug for forming

φd・Prepare the plug for forming. The surface roughness of the plugoutside diameter is to be approximately 25s, and make a shapewith sufficient thickness which does not distort.
・It is convenient to prepare various outside diameter dimensions for
dimensions of forming parts.
・It is convenient to process tapping in the center part of the plug andto guide with a bolt, etc.

２．Process of the plug gripping part for forming

φD・Operate the switch valve and maximize the opening of the jaw.
・Then, process the φD part (part to grip the plug for forming). Set
the dimension φD so that gripping near the center of the jaw
maximum stroke (diameter) is possible.
・φD = φd + (jaw maximum stroke/2)

３．Gripping of the plug for forming

φD・By operating the switch valve, grip the plug for forming in the φD
part. At this time, grip by pressing the plug on the chuck front
surface in order for the plug not to be tilted. Repeat chucking
several times to stabilize the plug.

４．Forming

φD′・Process the gripping part (dimension φD') of the work in the state that the plug is kept
gripped. The φD' part is to be approximately the same diameter (H7) as the diameterof the gripping part of the work, and process to be surface roughness at 6s or less.
・Set the hydraulic pressure during forming the same as during processing of the work,or slightly higher.
・When the plug distorts, lower the hydraulic pressure or change the plug into a shapewhich does not easily distort.

５．Trial cutting

・Remove the plug for forming and grip the work to check the jaw
stroke.
・Implement trial cutting to check the process precision and that
there is no slip, etc.
・Contacting on the gripping surface is to be 2 points contact of theside A and the side B when gripping.

BA

4−3 Forming soft jaw with inside diameter gripping
・Prepare the ring for forming. The surface roughness of the ringinside diameter is to be approximately 25s, and make a shape witha sufficient thickness which does not distort.
・It is convenient to prepare various inside diameter dimensions for
dimensions of forming parts.

φd１．Preparation of the ring for forming・Operate the switch valve and minimize the jaw to close.
・Then, process the φD part (part to grip the ring for forming). Set
the dimension φD so that gripping near the center of the jaw
maximum stroke (diameter) is possible.
・φD = φd - (jaw maximum stroke/2)

φD

２．Process of the ring gripping part for forming

22

３．Gripping of the ring for forming

φD・By operating the switch valve, grip the ring for forming in the φD
part. At this time, grip by pressing the ring on the jaw in order forthe ring not to be tilted. Repeat chucking several times to stabilize
the ring.

４．Forming

φD′・Process the gripping part (dimension φD') of the work in the state that the ring is kept
gripped. The φD' part is to be approximately the same diameter (H7) as the diameterof the gripping part of the work, and process to be surface roughness at 6s or less.
・Set the hydraulic pressure when forming the same as when processing of the work, orslightly higher. Additionally, in the case of inside diameter gripping, it is necessary to
use the input at 1/2 of the allowable maximum input or less.
・When the ring distorts, lower the hydraulic pressure or change the ring into a shapewhich does not easily distort.

５．Trial cutting

・Remove the ring for forming and grip the work to check the jaw
stroke.
・Implement trial cutting to check the process precision and that
there is no slip, etc.
・Contacting on the gripping surface is to be 2 points contact of theside A and the side B when gripping.

B

A

4−4 Forming method when you use forming jig
１．Preparation of the jig for forming

・Prepare the jig for forming. (There is a commercially available
product.)
・Attach the pin (Example 1) or the bolt and nut (Example 2) bydividing equally into 3 portions onto the ring shape plate. Make thering into a shape with sufficient thickness which does not distort.

Ex.1 Ex.2

Plate

Protrusion

Pin

Bolt and nut

２．Gripping of the jig for forming・Operate the switch valve and maximize the opening of the jaw. Then, operate theswitch valve to insert the jig for forming into the bolt hole of the soft jaw to grip. At thistime, grip by pressing the ring end surface of the jig for forming onto the jaw so as notto generate run-out.
・Check that it is gripping almost in the center of the appropriate stroke.
・Set the hydraulic pressure when forming slightly higher than when processing thework.

３．Forming

φD′・Process the gripping part (dimension φD') of the work in the statethat the jig for forming is kept gripped. The φD' part is to beapproximately the same diameter (H7) as the diameter of thegripping part of the work, and process to be surface roughness at
6s or less.

４．Trial cutting

・Remove the jig for forming and grip the work to check the jaw
stroke.
・Implement trial cutting to check the process precision and that
there is no slip, etc.
・Contacting on the gripping surface is to be 2 points contact of theside A and the side B when gripping.

23

B

A

5 . Usage
This product is a device to fix a work-piece when it is processed by the lathe machine or the rotary table.
The rotary cylinder closes the jaw and fixes a work-piece so that it does not move during processing. The chuck opens
the jaw after having processed it and remove a work-piece.

NOTICE・When replacing the top jaw, carefully clean the serration part with the master jaw, and the engagement part of
the T nut. Failure to do this may cause a precision failure.
・Set the hydraulic pressure according to the shape of the work and the cutting conditions. Pipe shape work, etc.,
may be distorted if they are tightened at a high gripping force.

5−1 Precautions during gripping work with chuck
DANGER・When gripping a work with the chuck, do not
get fingers or hands become caught. This
could cause crushed or cut fingers and hands.

5−2 Precautions during gripping work in irregular shape
DANGER・If a work in an irregular shape is gripped the master jaw may be broken. Consult our company or the distributor if
there is any concern.
・Cast metal, pitched shape or taper shape cannot be gripped.
・If the protrusion of the work is long, support it with a center or the steady rest. If the protrusion is long the tip of
the work turns, and this is dangerous as the work will fly out.

5−3 Precautions related to usage of jaw
DANGER・If a soft jaw other than one made by Kitagawa Corporation is used, the engagement will be inferior, and themaster jaw will be deformed, the gripping precision will worsen, and the work will fly out due to gripping failure,
which is dangerous.
・Do not use a top jaw with a different serration pitch from the master jaw. The engagement of the crests of theserration will become insufficient, therefore, the serration crests will break when gripping the work, and this isdangerous as the jaw and work will fly out.
・Do not use the soft jaw by welding to join for extension. The jaw will break due to insufficient strength and theserration part will become distorted due to welding. As a result, the engagement will worsen, the serration crests
will break, and this is dangerous as the work will fly out.

24

5−4 Precautions related to processing
DANGER<1> Unbalance
・In the case of processing largely unbalanced work, lower the rotation speed. The work will fly out and this isdangerous.
・Vibrations are generated if there is unbalance owing to the work or the jig, etc. Vibration not only will impart anegative influence on the process precision but also the endurance of the chuck being remarkably shortened,
and the chuck may break. Correct the unbalance using balance weights, etc., or lower the rotation speed for use.
・Heavy cutting at high rotation speed easily generates vibration in the same manner as chuck unbalance,
therefore, set cutting conditions appropriate for the dynamic gripping force and machine rigidity.

<2> Interference, contact, impact

・Before starting work, check that the top jaw, locator, work, etc., and the tool and the tool post, etc., do notinterfere at low rotation and then start processing.
・Do not allow anything to impact the chuck, jaw, and the work. The chuck will break and this is dangerous as thechuck and work will fly out.
・If the tool and the tool post contact the chuck or the work due to malfunction or tape mistake, etc., and impact isgiven, immediately stop the rotation, and check that there are no abnormalities in the top jaw, master jaw, T nut
and bolts of each part, etc.

<3> Coolant

・Unless coolant with a rust preventive effect is used, rust will occur inside the chuck and gripping force drop may
result. The work will fly out due to the gripping force drop and this is dangerous.

5−5 Attachment of locator and jig

30゜

30゜

・In the case of attaching the locator and the jig on the chuck body surface, tap or drill a hole in the additional process
range specified in Fig. 14.
Shaded part additional process possible range
C
A
A

B

30゜

B

15゜
belowＢ−205 above Ｂ−206
B-200 typeFig.14

BT200 type

Table 7Type

B-204,BT204
B-205,BT205
B-206,BT206
B-208,BT208

A (mm)
23
23
30
33

DANGER

B (mm)
39
45
53
63

C (mm)
Less than 15
Less than 15
Less than 20
Less than 20

Type

B-210,BT210
B-212,BT212
B-215

A (mm)
36
42
60

B (mm)79
90
120

C (mm)
Less than 20
Less than 30
Less than 40

A, B: Additional process impossible dimension.
C: Processible depth of tapping or drilling a hole.

・The chuck can be modified only in the manufacturer permissible range. This will not only break the chuck but thechuck and work may fly out, which is dangerous.
・Provide a countermeasure against flying out (dwell pin, etc.) due to centrifugal force to the locator or the jig, andattach with bolts which have sufficient strength. The locator or the jig may fly out, and this is dangerous.

25

6 ．Maintenance and Inspection
6−1 Periodic Inspection
・Add grease at least once a day.
・Fully stroke the jaw before starting work or upon supplying grease, and check that the jaw is inside the appropriate
stroke area. (Refer to page 21)
・Always clean the chuck body or the sliding surface using an air gun, etc., at the end of work.
・Check that the bolts of each part are not loosened at least once every 3 months.
・Disassemble and clean at least once every 6 months or every 100,000 strokes (once every 2 months or more forcutting cast metal).

6−2 Grease lubrication
１．Position to lubricate
・Lubricate using a grease gun from the grease nipple on each master jaw periphery part.
Supply grease when the jaw is open. After lubrication, repeat opening and closing the jaw several times without
gripping work.

２．Grease to use
・Use the designated grease specified in Table 8. If grease other than the designated grease is used, sufficient effectmay not be obtained.

Table 8Genuineproduct

CHUCK GREASE PRO

Conventional
product

Kitagawa chuck grease
Molykote EP Grease
Chuck EEZ grease
MOLYKOTE TP-42
Kluberpaste ME31-52

Kitagawa genuine product(Kitagawa distributor of each country)
Conventional product
TORAY Dow Corning (only inside Japan)
Kitagawa-Northtech Inc. (North American region)
Dow Corning (Europe, Asian region)
Kluber lubrication (worldwide)

３．Frequency of lubrication
・Add grease once every day.
・Add approximately 5g up to 8 inches and 10g for 10 inches or larger of grease to the each master jaw. Check thefilling degrees of the grease after removing the cover of the chuck center.
・In the case of high rotation or in the case of using a large amount of water soluble coolant, increase the frequency of
lubrication according to the usage conditions.

WARNING・To keep the chuck running in the best condition for a long time, adequate grease lubrication is necessary.
Insufficient grease lubrication causes a drop in the gripping force, operation failure at low hydraulic pressure,drop in gripping precision, abnormal wearing, seizing, etc. The work will fly out due to a drop in the gripping force
and this is dangerous.

４．Safety information about grease and anti-rust oil
Applicable range
・Designated grease・Antirust agent applied to the product at the delivery.

First aid measures
A f t e r i n h a l a t i o n: Remove victim to fresh air. If symptoms persist, call a physician.
After contact with skin: Wash off with mild cleaners and plenty of water. If symptoms persist, call a physician.
After contact with eyes: Rinse with plenty of water. If symptoms persist, call a physician.
A f t e r i n g e s t i o n: If large amounts are swallowed, do not induce vomiting. Obtain medical attention.
・ Please refer to each MSDS about the grease and the anti-rust oil which you prepared.
26

6−3 Disassembling
Disassembling procedures
Read the following disassembling procedures with reference to page 5.
1. Turn off the main power of the machine before starting work.
2. Loosen the jaw attaching bolt [13] and remove the soft jaw [4] and the T nut [5].
3. Remove the cover [8].
4. Turn the draw nut [7] with the handle [10] while loosening the chuck attaching bolt [14], and remove the chuck fromthe spindle.
5. Remove the wedge plunger [2] to the chuck rear side.
6. Remove the master jaw [3] to the inner periphery side of the chuck.
7. Assemble again while sufficiently coating the recommended grease in the reverse procedures of disassembling. At
this time, pay sufficient attention so as not to make a mistake in the numbers of the body [1], master jaw [3], and thewedge plunger [2].
8. Refer to page 34 about the installation procedure. (8-4. Attachment of chuck).

CAUTION・Use an eyebolt or a hanging belt when attaching and detaching the chuck to and from the machine, as there is adanger of injury or damage if the chuck drops.
Chuck size(inch)

Eyebolt

4,5
6 , 8 , 10
12 , 15

none
M10
M12

WARNING・Remove the eyebolt or the belt without fail after using. If the chuck is rotated with the eyebolt, etc., attached, they
may fly out and this is dangerous.
・Disassemble and clean the chuck at least once every 6 months or every 100,000 strokes (once every 2 months
or more for cutting cast metal). If cutting powder or other substances stagnate inside the chuck, it will lead toinsufficient stroke and a drop in the gripping force, and this is dangerous as the work will fly out. Check each part
carefully and replace any part that is worn or cracked.
・After inspection, apply sufficient grease in the designated areas and reassemble.
・After assembling, measure the gripping force according to the method on page 13, and check that the specified
gripping force is obtained.
・If you stop the machine for a long period of time, remove the work from the machine. If you don't, the work candrop due to a drop in the hydraulic pressure or the cylinder can stop or malfunction.
・ If you stop the machine or store the chuck for a long period of time, add grease to prevent rust.

27

7 . Malfunction and Countermeasures
7−1 In the case of malfunction
Check the points specified in the table below and take the appropriate countermeasure.

Table 9
Defective
The chuckdoes notoperate.
Insufficient

Cause

Countermeasure

The chuck inside will break.

Disassemble and replace the broken part.
Disassemble, correct the seized part with oilstone, etc., or replace

The sliding surface is seized.

the part.
Check the piping and the electric system, and if there is no

The cylinder is not operating.

abnormality, disassemble and clean the cylinder.

A large amount of cutting powder is inside.

stroke of the jaw. The draw pipe loosened.

Remove the draw pipe and retighten it again.

The stroke of the jaw is insufficient.
The gripping force is insufficient.
The forming diameter of the top jaw is notconsistent with the work diameter.
The Workslips.

Disassemble and clean.
Adjust so that the jaw is near the center of the stroke whengripping the work.
Check that the correct hydraulic pressure is obtained.
Form again based on the correct forming method.
Calculate the cutting force and check that it is suitable for the

The cutting force is too large.

specification of the chuck.
Supply grease from the grease nipple, and open and close the jaw

Insufficient grease lubrication

several times without gripping a work.

The rotation speed is too high. Swinging occurs

Lower the rotation speed to a speed at which the required gripping

due to incorrect alignment of cores of workforce can be obtained. Align the cores sufficiently to eliminate

feeder, steady rest, tail stock, etc.

such swinging.

The outer periphery of the chuck is running out.
Dust is attached on the serration part of themaster jaw and the top jaw.

Check the end surface run-out and the outer periphery, andretighten the chuck attachingbolts.

Remove the top jaw, and clean the serration part thoroughly.

The attaching bolt of the top jaw is not tightened

Tighten the top jaw attaching bolt at the specified torque.

sufficiently.

(Refer to page 9)

Precision

The forming method of the soft jaw is

Is the plug for forming parallel to the chuck end surface? Is thefailure.

inappropriate.

plug for forming not deformed due to the gripping force?

The height of the top jaw is too high, the top jaw

Lower the height of the top jaw. (Replace it with the standard size)

is deformed, the top jaw

or check the gripping contact surface and make it uniform.

attaching bolt iselongated.
The gripping force is too large
work being

deformed.

leading to theLower the gripping force in the range possible to process toprevent deformation.

WARNING・If the chuck failed due to a seizure or breakage, remove the chuck from the machine, following the disassembly steps in page
27. When the jaws and covers cannot be removed due to a blockage of workpiece, do not disassemble forcibly but pleasecontact us or our agent.
・If these countermeasures do not correct the problem or improve the situation. Immediately stop using the machine.
Continuous use of a broken product or a defective product may cause a serious accident by the chuck or the work flying out.
・Only experienced and trained personnel should do repairs and fix malfunctions. Repair of a malfunction by a person who has
never received instruction from an experienced person, the distributor or our company may cause a serious accident.

7−2 Where to contact in the case of malfunction
In the case of malfunction, contact the distributor where you purchased the product or our branch office listed on the back cover.
28

For Machine Tool Manufactures
Following pages are described for machine tool manufacturers (personnel who attach a chuck to a machine). Please
read following instruction carefully when you attach or detach a chuck to machine, and please sufficiently understandand follow the instructions for safe operation.

8 . Attachment
8−1 Outline drawing of attachment
Lathe rear cover

CylinderCylinder adapter
Top jaw

Draw pipe
Sleeve body

NC latheChuck

SupportDrain hose

Pressure
ajusting screw

Back plate
Flexible hose
Use one with large inside
diameter as possible

Hydraulic pump Pressure Manualgauge
switching valve

Line filter

SOL.
Solenoid
valve

Tank

Return onto the oil surface

Fig.15
・Attach the manual switching valve at a position where it is easy to operate for the attaching equipment.
・Install the hydraulic unit at a position where the drain hose is not kinked and the needle of the pressure gauge iseasily read.

29

DANGER・When other actuators are operated by the same hydraulic pressure source as the cylinder for chuck, be sure thata pressure drop of the cylinder does not occur during use. A hydraulic pressure drop leads to a drop in thegripping force which could allow the work to fly out.
・As to the drain hose・Use one with inside diameter φ32.
・Use a transparent vinyl hose for visualization.
・Provide a stream slope, without air pocket. This will ensure no back pressure.
・The end of the hose is physically above the oil level. (Refer to Fig.15)
・If the hydraulic oil stagnates inside the cylinder, oil leakage occurs, which may cause a fire.

WARNING・Install after removing the dust inside the pipe completely.
・Add a filter to the pressure supply line. If foreign matters gets inside the cylinder, this is dangerous since therotation valve of the cylinder will seize, the hose will tear off, and the cylinder will rotate. This is also dangerous
as the work will fly out.
・Always use a flexible hose for the hydraulic piping to the cylinder, and the bending force or tensile force of thepipe must not be applied to the cylinder. Use a pipe inside diameter as large as possible and keep the piping
length as short as possible.

NOTICE
・Especially, when a large sized hydraulic unit is used, excessive surge pressure is generated and the gripping
force becomes large, therefore, it may result in breakage of the chuck or the lowering of endurance. Restrain thesurge pressure by adopting a throttle valve, etc.

8−2 In the case that the back plate must be manufactured
１．Production of draw pipe

Lｂ

Cylinder adapter
CylinderDraw pipegBack platea

φ0.05 p

e Min
f Max

A

Fig.17p

φ0.05 pFig.16

Table 10Type

CylinderabcB-204,BT204

F0933H

M38×1.525

25

B-205,BT205

F0933H

M38×1.5

25

25

M55×2

30
25

25

M60×2

30

25

B-206,BT206
B-208,BT208
B-210,BT210
B-212,BT212
B-215

Chuck

ｃ

d

φ0.02 p

Determine the length of the draw pipe as shown below.

S1246
SR1146
S1552
SR1453
S1875
SR1675
S2091
SR2010

M85×2

35

30

M100×2
M115×23535F2511H

M130×245

35

d (f7)-0.025-0.050-0.02534-0.050-0.02550-0.050-0.03055-0.060-0.03080-0.060-0.03695-0.071-0.043123-0.083
34

e Min

f Max

g

L

3

M32×1.5

8

A+31

3.5

M40×1.5

8

A+31

5

M55×2

12

4

M60×2

12

5

M85×2

12

4.5

M100×212

5M110×2

12

A+41
A+43
A+39
A+42
A+38.5
A+41.5
A+36
A+39
A+74
30

The dimension L in Fig.16 is determined from the distance A between the cylinder adapter and the back plate.
(Example) In the combination of B-206, SS1246, and when A=800mm, the draw pipe length L is to be
L = A + 41 = 800 + 41 = 841mm.
At the time of the screw process of the dimension a, the precision is to be JIS 6H and 6h, 6g matching the screw of thepiston of the cylinder. Pay attention so that the thread parts on both ends and the inner periphery do not swing or
become unbalanced.

DANGER
・Provide sufficient strength for the draw pipe. If the draw pipe is broken due to insufficiency of the strength, thegripping force will be lost instantly, which is dangerous as the work will fly out.
・Keep the dimension e and the dimension f in Fig. 16 for the draw pipe and a material with the tensile strength2380MPa (38kgf/mm ) or more must be used.
・The personnel who designed draw pipe must judge whether the strength of the draw pipe is sufficient for theusage conditions.
・The dimensions and materials specified in this manual do not guarantee that the draw pipe will not break under
every usage condition.
・If the screw-in depth of the draw pipe to the draw nut is insufficient, the screw will break and the gripping force
will be lost instantly, which is dangerous as the work will fly out.
・If the engagement of the screw of the draw pipe is loose, vibration may occur resulting in breakage of the screw.
If the screw breaks, the gripping force will be lost instantly, which is dangerous as the work will fly out.
・If the draw pipe is unbalanced, vibration occurs, the screw is broken and the gripping force will be lost instantly,
which is dangerous as the work will fly out.

２．Processing of draw nut
1. Remove the socket head cap screw fixing the plunger nut with a hex key, and take out the plunger nut and thedraw nut together.
2. Remove the draw nut from the plunger nut. At this point, pay attention not to lose the steel ball (rigid sphere of φ5)
and the coil spring.
3. Process the draw nut to match the screw of the draw pipe.
4. When assembling, build the draw nut in the plunger nut, turn the draw nut to check the responsiveness of the steelball, and then attach it with the hexagon socket head bolt. If no responsiveness is obtained, assemble it again. Also,tighten the socket head cap screw at the specified torque (Refer to page 32).
Set screw
Coil spring

Process it to match thethread of the draw pipe
f

Chuck

max

Steel ballSocket head cap screw

Draw nut
Hex key

Plunger nut

The steel ball and the coilspring existinside thewedge plunger only for 6°

Fig.18WARNING・Do not process the draw nut for screw of the dimensions f MAX specified in Table 10 or more. The draw nut may
break and the work could fly out.

31

DANGER・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, whichis dangerous as the chuck or work will fly out.
・Use the bolts attached to the chuck, and do not use other bolts. However, if you must use other bolts notprovided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be
sure they are long enough.

Table 11
Bolt size
M5
M6
M8
M10

Tightening torque
7.5 N・m13 N・m33 N・m73 N・mTightening torque
107 N・m
171 N・m
250 N・m402 N・mBolt size
M12
M14
M16
M20

3．Production of back plate

NOTICE・Process the engagement diameter of the back plate after measuring the actual spindle.
・Run-out of the back plate directly affects the process precision. The end surface run-out of the back plate, spigot
joint diameter run-out must be 0.005 mm or less.
・The precision of the processing of the chuck attachment end surface of the back plate and the spigot joint
diameter can be raised by processing them after mounting to the installed machine.
・Process the chuck attachment spigot joint diameter of the back plate at the target value A-0.01 in the dimension
A of Table 12.
・ Fig.19 shows the case of the JIS short taper standard.
Stroke stopper partSet so that the plunger
end surface contacts
the back plate and stops.

C

φB

φE

φA

D

Back plate
SpindleDraw pipe
0.005TIR

0.005TIR

Fig.19

Table 12Type
φA (H6)φBC
D (min)φE (Recomended)

B-204
BT204
φ85
φ70.6
55
15
φ46

B-205
BT205
φ110
φ82.6
56
15
φ58

B-206
BT206
φ140
φ104.8
76
15
φ76

B-208
BT208
φ170
φ133.4
86
17
φ100

B-210
BT210
φ220
φ171.4
95
18
φ128

B-212
BT212
φ220
φ171.4
104
18
φ140

B-215
φ300
φ235
141
22
φ192

Dimension A (spigot joint diameter) conforms to the DIN standard.

32

DANGER・Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, whichis dangerous as the chuck or work will fly out.
・Use the bolts attached to the chuck, and do not use other bolts. However, if you must use other bolts notprovided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be
sure they are long enough.

Table 13Tightening torque
7.5 N・m13 N・m33 N・m73 N・mBolt size
M5
M6
M8
M10

Bolt size
M12
M14
M16
M20

Tightening torque
107 N・m
171 N・m
250 N・m402 N・mWARNING・Determine the dimension (dimension φE in Fig.17) of the back plate so that the plunger nut end surface contacts
the back plate and stops when pulling the plunger nut. If the stroke is larger than the one specified, it may causea chuck breakage or gripping failure.

8−3 In the case of with back plate
Also readIn the case that the back plate must be manufactured

in 8-2 (pages 30-33).

１．Production of draw pipe
Cylinder adapter
CylinderLｂ

Draw pipe

Chuck

ｃ

d

φ0.02 p

Determine the length of the draw pipe as shown below.

Back plate12a

φ0.05 p

e Min
f Max

A

φ0.05 pp

Fig.20

Fig.21

Table 14aType
B-206A5
BT206A5
B-208A6
BT208A6
B-210A6
BT210A6
B-210A8
BT210A8
B-212A6
BT212A6
B-212A8
BT212A8

CylinderS1246
SR1146
S1552
SR1453
S1875
SR1675
S1875
SR1675
S2091
SR2010
S2091
SR2010

M100×2
M115×2
M100×2
M115×2B-215A1

F2511H

B-215A8

F2511H

M55×2

b
30
25

c
25

M60×2

30

25

M85×2

35

30

M85×2

35

30

35

35

35

35

M130×245

35

M130×245

35

d (f7)-0.025-0.050-0.03055-0.060-0.03080-0.060-0.03080-0.060-0.03695-0.071110-0.03695-0.071110-0.043123-0.083-0.043123-0.083
50

e Min
5
4
5
5
4.5
4.5

f Max

L
A+56
A+58
A+56
M60×2
A+59
A+63.5
M85×2
A+66.5A+56.5
M85×2
A+59.5
A+61
M100×2
A+64
A+54
M100×2
A+57
M55×2

5

M110×2

A+96

5

M110×2

A+107

The dimension L in Fig.20 is determined from the distance A between the cylinder adapter and the back plate.
(Example) In the combination of B-206A5, S1246, and when A=800mm, the draw pipe length L is to be
L = A + 56 = 800 + 56 = 856mm.
At the time of the screw process of the dimension a, the precision is to be JIS 6H and 6h, 6g matching the screw of thepiston of the cylinder. Pay attention so that the thread parts on both ends and the inner periphery do not swing or
become unbalanced.
33

8−4 Attachment of chuck
１．Attaching the draw pipe to the cylinder
・Apply adhesive onto the screw part of the draw pipe, and screw it into the piston rod of cylinder. At this time, refer tothe instruction manual for the cylinder for tightening torque.

NOTICE・When attaching the draw pipe to the cylinder, the stopper pin of the piston may break if tightened at the stroke
middle position of the piston. In the case of a S type cylinder, F type cylinder and SR type cylinder, screw it in sothat the piston rod is fully out. Follow the explanation of the instruction manual for the cylinder for other items
about the cylinder.

２．Attach the cylinder to the spindle (or the cylinder adapter)・Check the run-out of the cylinder, and if it is normal, attach the hydraulic pipe.
2・Move 2 to 3 times at low pressure (0.4 MPa-0.5 MPa, 4 - 5 kgf/cm ) and set the piston at the forward end and turn off
the power supply.

CAUTION・Use an eyebolt or a hanging belt
when attaching and detaching thechuck to and from the machine,as there is a danger of injury or
damage if the chuck drops.

Chuck size(inch)
4,5
6 , 8 , 10
12 , 15

Eyebolt
none
M10
M12

WARNING・Remove the eyebolt or the belt without fail after using. If the chuck is rotated with the eyebolt, etc., attached, they
may fly out and this is dangerous.

３．Connect the chuck to the draw pipe・Remove the soft jaw and the cover of the chuck, and insert the handle to the chuck center hole, to connect to thedraw pipe while turning the draw nut.
・When connecting the draw nut and the draw pipe, do not forcibly screw them in if they cannot be screwed smoothly,
but check the inclination of the core of the screw, etc.

DANGER・If the screw-in depth of the draw pipe to the draw nut is insufficient, the screw will break and the gripping force
will be lost instantly, which will the work to fly out.
・If the engagement of the screw of the draw pipe is loose, vibration may occur resulting in breakage of the screw,loss of gripping force and the work flying out.

34

４．Attach the chuck matching to the attaching surface of the spindle (or the back plate).
・Turn the handle for connection to make a state that the chuck closely contacts the spindle attaching surface of thelathe.
・In the case of adjusting the centering of the chuck, lightly hit the body side face with a plastic hammer.
・ Tighten the chuck attaching bolts evenly. At this time, tighten the bolts at the specified torque.

DANGER・ Always tighten the bolts at the specified torque. If the torque is insufficient or excessive, the bolt will break, whichis dangerous as the chuck or work will fly out.
・Use the bolts attached to the chuck, and do not use other bolts. However, if you must use other bolts notprovided by Kitagawa, use bolts that have at least a strength classification of 12.9 (10.9 for M22 or more) and be
sure they are long enough.

Table 15
Bolt size
M5
M6
M8
M10

Tightening torque
7.5 N・m13 N・m33 N・m73 N・mBolt size
M12
M14
M16
M20

Tightening torque
107 N・m
171 N・m
250 N・m402 N・m

５．Adjust the position of the wedge plunger
・The appropriate position of the wedge plunger at the cylinder forward end is the position when the dimension A in
Fig.22 becomes as shown in the table below.
・At this time, check that the reference mark of the master jaw meets the line of the outside of the stroke mark. (Refer topage 21).
・A click stop (rotation stopper) is also attached to the draw nut, so complete adjustment at the position where this
response is felt.
Draw nut
SpindleHandleA gap approx. 0.5mm is
made between the bodyand the wedge plunger.

Back plateforwardend
Cover
attaching surface
A

Draw pipe
Wedge plunger

Wedge plunger
top surface

Chuck attaching bolt

Fig.22
Table 16
Type
A(mm)

B-204
BT204
15.5

B-205
BT205
15.5

B-206
BT206
20.5

B-208
BT208
23

B-210
BT210
22.5

B-212
BT212
27

B-215
39

６．Attach the cover and check the run-out of the chuck・Keep the periphery run-out and the end surface run-out of the chuck at 0.02mm T.I.R or less.
・Full stroke the jaw and check that the reference mark of the master jaw is completely within the entire stroke area
(Refer to page 21).

35

9 . Other information
9−1 About standards and orders
This product is based on the following standards or orders.
・ Machinery directive : 2006/42/EC Annex I
・ EN ISO 12100 : 2010
・ EN1550 : 1997+A1 : 2008

9−2 Information about markings of product3

Manufacturer's logo
F MAX：MAX PERMISSIBLE INPUT FORCEΣS MAX：MAX STATIC GRIPPING FORCEN MAX：MAX PERMISSIBLE SPEED
MASS：MASS
Specifications

Manufacturer's
address3

Type

Jaw No.

1

MFG. NO.

SB08B1S
T
A
77- NDAR1
HIR MOT D CH
UOOS
HIM MAC CK
HA
726- I FUC
H861
0 J U-SH
AP
AN I

F
Σ M
Ｎ SM AX＊
MAMAXAX ＊＊k
SS ＊＊ ＊＊ N＊＊ ＊＊ kN
＊ /m
Kg in

A
AW
AG
KIT YPE
T AN
P
JA

3

Type oftop jaw

MFG No.
Jaw No.
Stroke mark2

Fig.239−3 About disposal
Ultimate disposal of this product should be handled according to all national laws and regulations.

36

https://www.kiw.co.jp
https://www.kitagawa.com
https://www.kitagawa.com.cn

Kitagawa Corporation

Kitagawa Global hand Company

77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan

Tel.＋81-847-40-0561

Fax.＋81-847-45-8911■ JAPAN DOMESTICTokyo office1-405-1,Kita-ku,Yosino-cho,Saitama-shi,Saitama,331-9634,Japan
Tel.＋81-48-667-3469
Fax.＋81-48-663-4678

Sendai office

4-15-13,Yamatomachi,Wakabayashi-ku,Sendai-shi,Miyagi,984-0042,Japan
Tel.＋81-22-232-6732
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2-62,Kamitakabata,Nakagawa-ku,Nagoya-shi,Aichi,454-0873,Japan
Tel.＋81-52-363-0371
Fax.＋81-52-362-0690

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3-2-9,Kitakagaya,Suminoe-ku,Osaka-shi,Osaka,559-0011,Japan
Tel.＋81-6-6685-9065
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Hiroshima office77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Tel.＋81-847-40-0541
Fax.＋81-847-46-1721

Kyushu office

7-6-39,Itazuke,Hakata-ku,Fukuoka-shi,Fukuoka,812-0888,Japan
Tel.＋81-92-501-2102
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Overseas office77-1,Motomachi,Fuchu-shi,Hiroshima,726-8610,Japan
Tel.＋81-847-40-0526
Fax.＋81-847-45-8911■ OVERSEASKITAGAWA-NORTHTECH INC.

https://www.kitagawa-usa.com

America Contact
Tel.＋1 847-310-8787

Fax.＋1 847-310-9484

KITAGAWA EUROPE LTD.
Tel.＋44 1725-514000

https://www.kitagawa.global/en

Fax.＋44 1725-514001

KITAGAWA EUROPE GmbHhttps://www.kitagawa.global/de

Tel.＋49 2102-123-78-00 Fax.＋49 2102-123-78-69

KITAGAWA EUROPE GmbH Poland Office
Europe Contact

https://www.kitagawa.global/pl

Tel.＋48 607-39-8855

KITAGAWA EUROPE GmbH Czech Officehttps://www.kitagawa.global/cz

Tel.＋420 603-856-122

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KITAGAWA EUROPE GmbH Hungary Officehttps://www.kitagawa.global/hu

Tel.＋36 30-510-3550

KITAGAWA INDIA PVT LTD.
Tel.＋91-80-2976-5200

https://www.kitagawa.global/in

Fax.＋91-80-2976-5205

KITAGAWA (THAILAND) CO., LTD. Bangkok BranchTel.＋66 2-712-7479

Fax.＋66 2-712-7481

Kitagawa Corporation (Shanghai)
Asia Contact

Tel.＋86 21-6295-5772

https://www.kitagawa.com.cn

Fax.＋86 21-6295-5792

Kitagawa Corporation (Shanghai) Guangzhou OfficeTel.＋86 20-2885-5276

DEAMARK LIMITED
Tel.＋886 2-2393-1221

http://www.deamark.com.tw
Fax.＋886 2-2395-1231

KITAGAWA KOREA AGENT CO., LTD.
Tel.＋82 2-2026-2222

http://www.kitagawa.co.kr

Fax.＋82 2-2026-2113

DIMAC TOOLING PTY. LTD.

https://www.dimac.com.au

Oceania Contact
Tel.＋61 3-9561-6155

Fax.＋61 3-9561-6705

The products herein are controlled under Japanese Foreign Exchange and Foreign Trade Control Act. In the event of importing and/or exporting the products,
you are obliged to consult KITAGAWA as well as your government for the related regulation prior to any transaction.

K 2021.10.4000