BBT30 Super G1 Chucks

BBT30 Tooling System■Ultra High Precision

BIG-PLUS Spindle System is a licensed product of BIG DAISHOWA SEIKI CO LTD.

■Super Balancing●Dimensional Drawing■Super Rigidity･Super Grip Forcegℓ

For high rotation machining, even the standard model can be usedfor rotation up to 25,000min-1Taper■Safety
Locknut and Safety Cover (PAT.) ensuringsafety in high rotation machining.

Model
BBT30 -SGC6-45-SGC6-75-SGC6-105
BBT30 -SGC8-45-SGC8-75-SGC8-105
BBT30 -SGC10-45-SGC10-75-SGC10-105
BBT30 -SGC12-45-SGC12-75-SGC12-105
BBT30 -SGC16-45-SGC16-75
BBT30 -SGC20-60-SGC20-90

1.0〜8.026

2.0〜10.031

3.0〜12.536

3.0〜16.042

3.0〜20.0

50

L2
L1

Gripping Capacity Nut Outside Diameter Total Length Length from the Length Adjustment Screw
dD
L1
Gauge Line L2
Maximumℓ
93.4
4547
20
M8×0.75
1.0〜6.0
123.4
75
52
153.4
105
93.4
123.4
153.4
93.4
123.4
153.4
93.4
123.4
153.4
93.4
123.4
108.4
138.4

φD

φd

Most effectively usable for machining work by the end-mill.

Gauge line

No Sinking of Holder
Z-direction Dimension Stability andWorking Face Accuracy Improved

Guaranteeing the integrated runout accuracy of within 5μm.
Highest precision in this industrial field.

4575105457510545751054575
60
90

M10×1.546

M12×1.551

M14×1.5
̶
M18×1.5
̶
M22×1.5

Taper

BBT30
7/24

3862
̶
68
̶
73

Applicable Collet Applicable(option)
Lock Nut
SG6

SGN6

SG8

SGN8

SG10

SGN10

SG12

SGN12

SG16

SGN16

SG20

SGN20

Unit: mm
Applicable Spanner Length Adjustment Coolant Seal
Weight (kg)Screw (option) Screw (option)(option)
0.5
FS20
CSH6
APM60.60.70.5
FS26
CSH8
APM8-20.6
0.70.5
FS33
CSH10
APM10-20.6
0.80.5
FS36
CSH12
APM12-20.70.9
̶
0.5
FS42
CSH16
APM16-20.8
̶
0.7
FS50
CSH20
APM20-21.0◆The above Maxｌof tapered is the length when Length Adjustment Bolt (APM) is used.
◆Dimensions of tapered shank are in accordance with the standard of BIG-PLUS spindle.
◆Collet, Spanner, Coolant-Sealing Back-up Screw, Length Adjustment Bolt and retention knob are not included in the above. They are separate accessories.
※For the collets and spanners, please refer to page 43.

BBT30 New Drill Mill Chucks■Wide Range of Use●Dimensional Drawingg

Various cutting tools including drill bits, tapping drills, reamers,
and end mills can be chucked.

ℓφdThat is an advantage of double taper collets.

φD■High Gripping ForceCoolant of high pressure up to 7.0MPa is usable.
Taper■High Balancing
Grinding of the external surface ofthe holder secures a high balancing.

Prevention of Z-dimension variation in high speed rotation
Repeating Accuracy of On/Oﬀ-Spindle Improved
Firm contacting of ﬂange surface achieves stable high accuracy for ﬁtting.

Bending Stiﬀness Improved by Duplex-Holding
Anti-vibration Improved by Duplex-Holding
Duplex-holding prevents fretting.

Comparison with conventional holders＜Adopting BIG-PLUS Spindle System＞

With the duplex-holding by taper and ﬂange surface, the bending stiﬀness isstronger and the high speed cutting and feeding is available. Since the ﬂange
surface contacts with the spindle surface, sinking of the holder is prevented duringhigh speed rotation and heavy cutting. The Z-direction dimension stability is ﬁrmer.
BIG-PLUS Spindle System is a licensed product of BIG DAISHOWA SEIKI CO LTD.

Conventional BT shank system

BBT Duplex-Holding system

High Eﬃcient Machining in High Speed Rotation/Feeding
Even if the spindle is expanded during high speed rotation, the taper and ﬂange surface
contacts ﬁrmly, Sustaining balancing of duplex-holding achieves high eﬃcient machining.

Long life of cutting tools

GapSurface Contact

Model
BBT30 -NDC7S-60-NDC7S-90-NDC7S-120
BBT30 -NDC7-60-NDC7-90-NDC7-120
BBT30 -NDC10-60-NDC10-90-NDC10-120
BBT30 -NDC13-60-NDC13-90-NDC13-120
BBT30 -NDC16-75-NDC16-105-NDC16-120
BBT30 -NDC20-75※-NDC20-105-NDC20-120※ BBT30 -NDC25-90-NDC25-120※

0.5〜7.025
0.5〜10.033

0.5〜13.036

2.5〜16.042

3.5〜20.052

5.0〜25.0

62

108.4
138.4
168.4
108.4
138.4
168.4
108.4
138.4
168.4
108.4
138.4
168.4
123.4
153.4
168.4
123.4
153.4
168.4
138.4
168.4

L2
L1

Gripping Capacity Nut Outside Diameter Total Length Length from the Length Adjustment Screw
L1
Gauge Line L2dDMaximumℓ22

Gauge line

■Applicable to high-pressure coolant

6090120609012060901206090120751051207510512090120

Taper

Applicable Collet Applicable(option)Lock Nut

NDN7S

FS22

NDN7

FS26

YCC10

NDN10

YCC1355
M8×0.75

APM7-2

CSH7

FS33

APM10-2

CSH10

NDN13

FS36

APM13-2

CSH13

YCC16

NDN16

FS42

APM16-2

CSH16

YCC20

NDN20

FS52

YCC25

NDN25

FS62

YCC752

M12×1.5

Unit: mm
Applicable Spanner Length Adjustment Coolant Seal
Weight (kg)Screw (option) Screw (option)(option)50

M15×1.562M18×1.568

M15×1.560

M22×1.573

M15×1.580

BBT30
7/24

APM13-1

̶

APM20-2

CSH20

APM13-2

̶
̶

0.5
0.6
0.7
0.5
0.6
0.7
0.5
0.7
0.9
0.5
0.7
0.9
0.7
0.9
1.1
0.7
1.0
1.2
1.0
1.7

※Coolant seal screw cannot be used. ◆Dimensions of the Taper Shank are in accordance with the standard of BIG-PLUS spindle. ◆Dimensions of Max. ｌ are those when length adjustment
bolt -APM type is used. ◆Collet, spanner, retention knob, coolant sealing back up screw, length adjustment bolt are not included the above. They are separate accessories.
※For the collets and spanners, please refer to page 45.

CNC Keyless Drill Chucks with BBT30 Shank■High gripping torque■Integration of shank and chuck madeits compact size and safety.
■Re-tightening with hook spanner
prevents loosening at an emergency
stopping.
■Run-out accuracy: smaller
than 0.05mm●Dimensional
Drawing

Gripping torque was increased by making the tightening
collar thicker, and by strengthening tightening of theopening by modifying chuck ID with straight slit.

7528.3146.7■High Rigidity・High Accuracy
φ20φ52High rigidity thanks to tightening collar end
holding system (duplex holding) and it ismanufactured with concentricity within 0.005mm●Dimensional Drawing

D1

BBT30 Power Lock Milling Chucks

Taper
L1L2

BBT30
56〜66

Unit: mmModel
BBT30-LC6.5F-70
BBT30-LC13F-90

Unit: mmModel

Grip DiameterdBBT30-PMC20-75

Total Length Length from theGauge Line L2
L1

Nut Outside
Diameter D

20123.4

52

Applicable Collet Applicable Spanner(option)(option)Maximum ℓTaper

75

BBT30
7/2475SCR20SCA20SCC20FS55

Weight (kg)

Gripping
Capacity0.5〜6.5
0.5〜13DL1L23450709076102

Applicable WeightSpanner(kg)FS6.5LC 0.60
BBT30
FS13LC 1.15
Taper0.96※Please use a tool of which shank diameter tolerance h7.
※Dimensions of tapered shank are in accordance with the standard of BIG-PLUS spindle.
※Straight collet and Spanner are not included in the above. They are separate accessories.
※For the collets and spanners, please refer to page 46.

Super Keyless Drill Chucks with BBT30 Shank■The sleeve-lock mechanism workingin reverse rotation.
■M16 tapping available.
■Run-out accuracy: smaller than0.05mm

B2W

Gauge line

TaperModelTaper

D122.0BBT30
7/2422.225
25.4※ Special sizes are also available.
※ Retention knob is a separate accessory.

L140604060906090

D2L2

L1H1
L1L2L2

H2

Unit: mm
Unit: mm

BBT30 -FMA22-40-FMA22-60
BBT30 -FMA22.225-40-FMA22.225-60-FMA22.225-90
BBT30 -FMA25.4-60-FMA25.4-90●Dimensional Drawing

φD3

G

φD4

φD2

φD1

B1

●Dimensional Drawing

φD

BBT30 Face Mill Arbors

B1B2G

D3D4H1H2W

Weight (kg)0.70
0.900.700.90
1.30
1.00
1.50

（六角穴付ボルトM10×35ℓ）

4518

φ105M1045

188

3.5

M813

̶

8̶

650

22

9.5

5M123323101210

Gripping
Capacity
BBT30-SLC13-110 0.5〜13ModelDL151110

Applicable Weight
Spanner(kg)
122.5 BBT30 FS13LC 1.40
L2Taper