Checking necessary parts to
replace existing chuck with BRAttentions
This document is written with thefollowing assumptions.
• Replacing with the same size Kitagawa
standard chuck*Through-hole 3-jaw chuck: BB200, B-200 andBS300•

Using the through-hole hydrauliccylinder you are currently using*Please contact us if your chuck is not applicable to thismanual.
*If the chuck currently being used is special, this manual
might not be applicable. We recommend that you
should consult us when anxieties or doubts arise.

Outline of checking procedure
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

Kitagawa Global hand Company - Development section, Technical department. 2019

Identifying the chuck currently used
Identifying the cylinder currently used
Identifying back plate
Identifying spindle nose of lathe
Choosing back plate
Choosing back plate mounting bolts
Choosing chuck mounting bolt length
Confirming draw pipe thread diameterand pitch
Confirming draw pipe extrusion length
Confirming other necessary parts

MA1244PHG2

1

Check sheet
Checking necessary parts for replacement with BR chuck

Proceed the procedure whilefilling in this sheet to confirm
all necessary items withoutomission.

Chuckcurrently used

*Print this page and use it.

Model of cylinder currently used[C]

Spindle nose of lathe[D]

Required back plate type

[E]

Back plate

Size and quantity of back plate mounting
bolts

[F]

pcs

Back plate mounting bolts

Size and quantity of chuck mounting bolts

[G]

3 pcs

Chuck mounting bolts

Draw pipe thread diameter and pitch [mm][H]

Draw pipe

Draw pipe extrusion length [mm][J]

Draw pipe thread length [mm][K]

Parts that need to beprepared separately
Draw nutレ

Checklist

DataModel[A]Draw nut position [mm][B]

Kitagawa Global hand Company - Development section, Technical department. 2019MAXMAX

MA1244PHG2

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Name of each part
Machine spindle
Back plate mounting bolt
Chuck

Rotary hydrauliccylinderDraw pipe
Draw nut
Back plate
Kitagawa Global hand Company - Development section, Technical department. 2019

Chuck mounting bolt

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3

1. Identifying the chuck currently used (1)Confirming chuck model
Fill in the column [A] of the check sheetwith the model number of chuck that you
are currently using.
The model number can be found by oneof the following.
• Specification drawings of chuck• Marking on body surface of chuck

Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG24

1. Identifying the chuck currently used (2)Checking draw nut position
Fill in the column [B] of the check sheetwith the distance between the chuck
mounting face and the draw nut of thechuck that you are currently using.

[B]Draw nut position(Forward end)

The draw nut position can be found byone of the following.
••Specification drawing of the chuck
Specification drawing of the lathe

Draw nut
Chuck mounting face
(Excluding back plate)

Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG25

1. Identifying the chuck currently used (3)If the value [B] is the same as theright table;
The standard draw nut of BR chuck can beused with additional threading.

Chuck model

Compare with column [B]BR06

11BR08

14.5

BR10

8.5

BR128

If the value [B] is not the same as
the right table;
A dedicated draw nut may be required.
Put a check in the column “Draw nut” of“Parts that need to be preparedseparately” on the check sheet.

Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG26

2. Identifying the cylinder currently used
Confirming cylinder model
Fill in the column [C] of the check sheetwith the model number of cylinder thatyou are currently using.
The model number can be found by oneof the following.
• Specification drawings of the cylinder• Name plate of cylinder
Name plate*SR series does not have a name plate but a laser
marking on a sleeve body.

Sleeve bodyOutside view of through-holerotary hydraulic cylinder

Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG27

3. Identifying back plate (1)There are two types of back plate as follows depending on mounting way.
a. Back plate to be attachedb. Back plate to be attachedto the chuck firstto the spindle first
Back plate mounting bolt

Back plate mounting bolt

Chuck mounting bolt
Back plate

Kitagawa Global hand Company - Development section, Technical department. 2019

Chuck mounting bolt
Back plate

MA1244PHG28

3. Identifying back plate (2)In case that the chuck being used
is BB200 series;

In case that the chuck being used
is neither BB200, B-200 or BS300;

All of back plate, back plate mounting
bolts, chuck mounting bolts currently
being used can be used with BR chuck asthey are. In the columns [D] to [G] of thecheck sheet draw diagonal lines andproceed to step 8.

Contact Kitagawa distributor to check ifback plate, back plate mounting bolts, anchuck mounting bolts can be used or not.

In case that the chuck being used
is B-200 or BS300 series;

Then if you need to prepare partsseparately, put checks in columns of“Parts that need to be preparedseparately” and proceed to step 8.

Proceed to the next page.
Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG294. Identifying spindle nose of lathe
Identifying spindle nose

Example of spindle nose number

Fill in the column [D] of the check sheetwith spindle nose number.

••••

The spindle nose number can be found by
one of the following.
• Specification document of the lathe• Lathe catalogue

A2-5 … Type A2 Nose 5
A2-6 … Type A2 Nose 6
A2-8 … Type A2 Nose 8
A2-11 … Type A2 Nose 11

For details of the spindle nose number,refer to JIS B 6109-1: 2005 “Machine tools- Connecting dimensions of spindle noses
and work holding chucks - Part 1: Conicalconnection”.

Kitagawa Global hand Company - Development section, Technical department. 2019

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5. Choosing back plate
Find the necessary backplate type on the table andfill in the column [E] of thecheck sheet.
If the back plate currently
being used cannot be used,
put a check in the column“Back plate” of “Parts thatneed to be preparedseparately” on the checksheet.

Chucktype
BR06

BR08

BR10

BR12

Spindlenose

Back plate type orpart number [E]A2-5

Possibility to use the existingback plate
B-200

BS300

CBB-06A05

No

No

A2-6

CBB-06A06

No

No

A2-5

CBB-08A05

No

No

A2-6

61P363755

NoYes

A2-8

CBB-08A08

No

No

A2-6

CB-10A06

Yes

No

A2-8

CB-10A08

Yes

No

A2-6

61P393994

No-

A2-8

CB-15A08

No-A2-11

61Q349363

No-Kitagawa Global hand Company - Development section, Technical department. 2019

MA1244PHG2116. Choosing back plate mounting bolts
Find the size and quantityof back plate mounting
bolts on the table and fill in
the column [F] of the checksheet.
If the bolts currently being
used cannot be used, put acheck in the column “Backplate mounting bolts” of“Parts that need to beprepared separately” on thecheck sheet.

Chucktype
BR06

BR08

BR10

BR12

Back platemounting bolts[F]Spindle
nose

Possibility to use the existingback plate mounting bolts
B-200

BS300

A2-5

M6×16

3 pcs

Yes

Yes

A2-6

M12×35

6 pcs

Yes

Yes

A2-5M10×25

6 pcs

Yes

No

A2-6

M6×20

3 pcs

Yes

Yes

A2-8

M16×40

6 pcs

Yes

Yes

A2-6

M12×30

6 pcs

Yes

Yes

A2-8

M8×20

3 pcs

Yes

Yes

A2-6

M12×35

9 pcs

No-

A2-8

M16×40

6 pcs

No-

A2-11

M10×253 pcs

No-Kitagawa Global hand Company - Development section, Technical department. 2019

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7. Choosing chuck mounting bolt length
Find the necessary chuck
mounting bolts on thetable and fill in the column[G] of the check sheet.
If the bolts currently being
used nor the standardattached bolts of BR chuckcannot be used, put acheck in the column “Chuck
mounting bolts” of “Parts
that need to be preparedseparately” on the checksheet.

Chuck
typeBR06

BR08

BR10

BR12

Possibility to use the existing chuck
mounting bolts

SpindlenoseChuck
mountingbolts [G]A2-5

M10×95

A2-6

M10×80Use the standard boltsattached to BR06

A2-5

M12×90Use the standard bolts attached to BR08

A2-6

M12×110

A2-8

M12×90Use the standard bolts attached to BR08

A2-6

M16×100

Use the standard bolts attachedto BR10

A2-8

M16×120YesNoA2-6

M20×110-A2-8

M20×110

Use the standard bolts
attached to BR12

A2-11

M20×150

No-Kitagawa Global hand Company - Development section, Technical department. 2019

B-200

BS300

Yes

NoNo

Yes

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8. Confirming draw pipe thread diameter and pitch

The thread diameter and pitch of draw
pipe can be found by one of the following.
• Specification document of the lathe• Specification drawing of the chuck• Remove the chuck from lathe andmeasure the draw pipe thread.

Thread lengthLathe spindle

Draw pipe

Thread diameter and pitchFill in the column [H] of the check sheetwith thread diameter and pitch of drawpipe.

[K][H]

Thread diameter and pitch of draw
pipe[J]Extrusion length
Kitagawa Global hand Company - Development section, Technical department. 2019

(Forward end)

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9. Confirming draw pipe extrusion length (1)In case that the chuck being used
is BB200 series;

In case that the chuck being used
is not BB200 series;

The draw pipe currently being used canbe used with BR chuck as it is. In thecolumn [J] of the check sheet draw
diagonal line and proceed to step 10.

Fill in the column [J] of the check sheetwith the extrusion length of draw pipe at
its forward end. (See the figure on theprevious page)The extrusion length can be found by oneof following.
• Specification document of the lathe•Kitagawa Global hand Company - Development section, Technical department. 2019

Remove the chuck from lathe andmeasure the extrusion length.

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9. Confirming draw pipe extrusion length (2)If both values of columns [H[ and[J] are larger than values in theright table,
The draw pipe may be too long to install
the chuck properly due to interferencewith draw nut.
Put a check in the column “Draw pipe” of“Parts that need to be preparedseparately” on the check sheet.
Fill in the column [K] of the check sheetwith thread length of draw pipe.

Chucktype
BR06

Spindle
nose
A2-5
A2-6

Compare withcolumn [H]M52

A2-5BR08

A2-6
A2-6
A2-8

M65

Kitagawa Global hand Company - Development section, Technical department. 2019

A2-8
A2-116951
74

M80

A2-6BR124356

A2-8BR10

Compare withcolumn [J]585181M105

6875

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10. Confirming other necessary parts
Parts that need to be preparedseparately
In order to replace the chuck currently
being used with BR chuck the parts withcheckmarks on “Parts that need to beprepared separately” will be needed.

Especially if the draw nut and/or draw
pipe are marked, we recommend that you
should consult Kitagawa distributor tominimize the replacement cost.

Regarding draw nut threading
The draw nut of BR chuck needs to bethreaded in accordance with the draw
pipe thread (column [H] of check sheet).
It is possible for a customer to machine
the draw nut in accordance with theprocedure on instruction manual or ofcourse it is also possible to order toKitagawa distributor.

Kitagawa Global hand Company - Development section, Technical department. 2019

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