We carry a variety of ER collets: ER8, ER11, ER12, ER16, ER20, ER25, ER32, ER40, ER50 collets in metric and inch sizes.
Also find ER tapping collets, ER collet chucks, ER collet sets, ER collet nuts, ER collet wrenches, ER coolant collets, and more.

RD/ER COLLET SYSTEM FEATURES

High Accuracy. 16 slots for rigid clamping and extra concentricity.
Wide Clamping Range. For fewer changes and a low cost per set that covers a continuous range of sizes.
Versatility. Interchangeable with ER and ESX type collets.
Ideal for Tool Extensions. High accuracy for long-reach applications.
Multiple Applications. Same collets can be used for drilling, milling, tapping and reaming.
Precision Manufacturing. High grade spring steel is hardened and precision ground, with 100% quality inspection.
Long Life. Exceeding that of other collet styles.
Factory Guarantee. Fully backed.

RD/ER COLLET CONCENTRICITY PER DIN 6499

METRIC					INCHES
Clamping Range D		L	Maximum T.I.R.		Clamping Range D		L	Maximum T.I.R.
Min.	Max.	L	Precision DIN 6499	High Precision DIN 6499	Min.	Max.	L	Precision DIN 6499	High Precision DIN 6499
1.0	1.6	6	0.015	0.008	0.039	0.063	.026	0.0006	0.0003
1.6	3.0	10			0.063	0.118	0.394
3.0	6.0	16			0.118	0.236	0.630
6.0	10.0	25			0.236	0.394	0.984
10.0	18.0	40	0.020	0.010	0.394	0.709	1.575	0.0008	0.0004
18.0	26.0	50	0.020	0.010	0.709	1.024	1.969	0.0008	0.0004
26.0	34.0	60	0.025		1.024	1.339	2.362	0.0010

METHOD OF INSERTION & RELEASE FOR RD/ER COLLETS

diagram of installation angle for how to insert ER collet

INSERTING

Insert collet into nut at angle as shown to engage extraction tongue in groove of collet.
Screw nut onto collet holder with collet securely in nut
Insert tool to be gripped and lock nut.

IMPORTANT: Never screw nut onto collet unless collet is properly seated in nut.

RELEASING

Hold nut in vertical position and remove nut at an angle. Collet is automatically withdrawn from chuck by excentric ring of nut when unscrewed.

RD/ER 8 COLLET SYSTEM

		METRIC
Clamping Range		Standard Precision	High Precision
Clamping Range		Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.
1.0-0.5	0.039-0.019	80-001	80-901
1.5-1.0	0.059-0.039	80-002	80-902
2.0-1.5	0.079-0.059	80-003	80-903
2.5-2.0	0.098-0.079	80-004	80-904
3.0-2.5	0.118-0.098	80-005	80-905
3.5-3.0	0.138-0.118	80-006	80-906
4.0-3.5	0.157-0.138	80-007	80-907
4.5-4.0	0.177-0.157	80-008	80-908
5.0-4.5	0.197-0.177	80-009	80-909
.5 – 5mm 9 Pc. Set		80-010	80-910

RD/ER 8

Collapse per collet: 0.5 mm. (0.019 in.)
Capacity per set: 0.5 – 5 mm. (0.019 – 0.197 in.)
Precision per DIN 649
Maximum tightening torque 7 ft/lbs

diagram showing height (as B) and width (as A) of Centaur ER 8 collet

RD/ER 8

A= 8.5 mm. (0.34 in.)
B =13.5 mm. (0.53 in.)

RD/ER 11

A = 11.5 mm. (0.45 in.)
B = 18 mm. (0.71 in.)

RD/ER 12

A = 12 mm. (0.47 in.)
B = 19.5 mm. (0.77 in.)

Buy ER 8 Collets

RD/ER 11 COLLET SYSTEM

RD/ER 11

Collapse per collet: 0.5 mm. (0.019 in.) | Capacity per set: 0.5 – 7 mm. (0.019 – 0.276 in.) | Precision per DIN 6499 Maximum tightening torque: 20 ft./lbs.

		METRIC SIZES
Clamping Range		Standard Precision	High Precision
Clamping Range		Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.
1.0-0.5	0.039-0.019	110-001	110-901
1.5-1.0	0.059-0.039	110-002	110-902
2.0-1.5	0.079-0.059	110-003	110-903
2.5-2.0	0.098-0.079	110-004	110-904
3.0-2.5	0.118-0.098	110-005	110-905
3.5-3.0	0.138-0.118	110-006	110-906
4.0-3.5	0.157-0.138	110-007	110-907
4.5-4.0	0.177-0.157	110-008	110-908
5.0-4.5	0.197-0.177	110-009	110-909
5.5-5.0	0.217-0.197	110-010	110-910
6.0-5.5	0.236-0.217	110-011	110-911
6.5-6.0	0.256-0.236	110-012	110-912
7.0-6.5	0.276-0.256	110-013	110-913
.5 – 7mm 13 Pc. Set		110-014	110-914

NOTE: High precision also available in inch sizes.

METRIC SIZES
Coolant Collets
Dia. (mm)	Part No.
2.5	110IK2.5
3.0	110IK03
3.5	110IK3.5
4.0	110IK04
4.5	110IK4.5
5.0	110IK05
5.5	110IK5.5
6.0	110IK06
6.5	110IK6.5
7.0	110IK07

INCH SIZES
Coolant Collets
Dia. (mm)	Part No.
1/8	110IK503
5/32	110IK504
3/16	110IK505
7/32	110IK506
1/4	110IK507

INCH SIZES
Standard Precision
Dia. (mm)	Part No.
1/16	110-501
3/32	110-502
1/8	110-503
5/32	110-504
3/16	110-505
7/32	110-506
1/4	110-507
7 Pc. Set	110-508

Buy ER 11 Collets

RTS 11 RIGID TAPPING COLLETS

	RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	111-141
8	111-168
10	111-194
12	111-220
1/4	111-255

Buy RTS 11 Tapping Collets

RD/ER 12 COLLET SYSTEM

		METRIC SIZES
Clamping Range		Standard Precision	High Precision
Clamping Range		Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.
1.0-0.5	0.039-0.019	120-001	120-901
1.5-1.0	0.059-0.039	120-002	120-902
2.0-1.5	0.079-0.059	120-003	120-903
2.5-2.0	0.098-0.079	120-004	120-904
3.0-2.5	0.118-0.098	120-005	120-905
3.5-3.0	0.138-0.118	120-006	120-906
4.0-3.5	0.157-0.138	120-007	120-907
4.5-4.0	0.177-0.157	120-008	120-908
5.0-4.5	0.197-0.177	120-009	120-909
5.5-5.0	0.217-0.197	120-010	120-9010
6.0-5.5	0.236-0.217	120-011	120-9011
6.5-6.0	0.256-0.236	120-012	120-9012
7.0-6.5	0.276-0.256	120-013	120-9013
13 Pc. Set		120-014	120-9014

RD/ER 12

Collapse per collet: 0.5 (0.019)
Capacity per set: 0.5 – 7 mm. (0.019 – 0.276 in.)
Precision per: DIN 6499
Maximum tightening torque: 20 ft./lbs.

RD/ER 16 Collet System

diagram showing height (as B) and width (as A) of Centaur ER 16 collet
A = 17 mm. (0.67 in.)
B = 27 mm. (1.06 in.)

Collapse per collet: 0.5/1 mm. (0.019/0.039 in.)
Capacity per set: 0.5 – 10 mm. (0.019 – 0.394 in.)
Precision per DIN 6499
Maximum tightening torque: 40 ft./lbs.

RD/ER 16 INTERNAL & EXTERNAL COOLANT COLLETS

Centaur IK Internal Sealed Coolant Collets

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK):

To direct fluid through the cutting tool.

ND COLLETS

Nominal size collets manufactured per DIN 6499 Form A are available in inch and metric sizes by special order, offering maximum 0.0003 in. TIR.

External Coolant Collets (EK):

To direct fluid through the collet to the cutting tool tip, allowing the use of standard cutting tools in coolant through applications or to route fluid through the tool and around the tool for higher coolant volume.

RD/ER 16 TAPPING COLLETS

RTS Rigid Tapping Collets
with Square Drive

For synchronous tapping operations using any RD/ER collet chuck. Collet bore is exact tool diameter, with square drive, for accuracy and rigidity. Available sealed for coolant-through applications, as well as in DIN and JIS standard metric sizes.

RDT Quick-Change
Tapping Collets
with Axial Compensation

For use with any RD/ER collet chuck, these tapping collets help prevent tap breakage on machines requiring axial compensation. Friction-free ball-bearing drive. Metric sizes available upon request.

RD/ER 16 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision	0.5 Increments
Clamping Range		Part No.	Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.	Part No.
1.0-0.5	0.039-0.019	160-001	160-901
1.5-1.0	0.059-0.039	160-001	160-901	160-101
2.0-1.0	0.079-0.039	160-002	160-902
2.5-1.5	0.098-0.059	160-002	160-902	160-102
3.0-2.0	0.118-0.079	160-003	160-903
3.5-2.5	0.138-0.098	160-003	160-903	160-103
4.0-3.0	0.157-0.118	160-004	160-904
4.5-3.5	0.177-0.138	160-004	160-904	160-104
5.0-4.0	0.197-0.157	160-005	160-905
5.5-4.5	0.217-0.177	160-005	160-905	160-105
6.0-5.0	0.236-0.197	160-006	160-906
6.5-6.5	0.256-0.217	160-006	160-906	160-106
7.0-6.0	0.276-0.236	160-007	160-907
7.5-6.5	0.296-0.256	160-007	160-907	160-107
8.0-7.0	0.315-0.276	160-008	160-908
8.5-7.5	0.335-0.296	160-008	160-908	160-108
9.0-8.0	0.354-0.315	160-009	160-909
9.5-8.5	0.374-0.335	160-009	160-909	160-109
10-9.0	0.394-0.354	160-010	160-9010
5 – 10mm 10 Pc. Set		160-011
3 – 10mm 08 Pc. Set		160-018

INCH SIZES
Standard Precision
Dia. (in.)	Part No.
1/16	160-501
3/32	160-502
1/8	160-503
5/32	160-504
3/16	160-505
7/32	160-506
1/4	160-507
9/32	160-508
5/16	160-509
11/32	160-510
3/8	160-511
13/32	160-512
1/16-13/32 12-Pc. Set 1/8 – 3/8 9 pc. Set	160-513 160-530

INTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	160IK03	1/8	160IK501
4	160IK04	5/32	160IK502
5	160IK05	3/16	160IK503
6	160IK06	7/32	160IK504
7	160IK07	1/4	160IK505
8	160IK08	9/32	160IK506
9	160IK09	5/16	160IK507
10	160IK10	11/32	160IK508
		3/8	160IK509

EXTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	160EK03	1/8	160EK501
4	160EK04	5/32	160EK502
5	160EK05	3/16	160EK503
6	160EK06	7/32	160EK504
7	160EK07	1/4	160EK505
8	160EK08	9/32	160EK506
9	160EK09	5/16	160EK507
10	160EK10	11/32	160EK508
		3/8	160EK509

NOTE: High precision also available in inch sizes.

Buy ER 16 Collets

RD/ER 16 TAPPING COLLETS

	RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	161-141
8	161-168
10	161-194
12	161-220
1/4	161-255
5/16	161-318

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

161-141S

161-168S

161-194S

161-220S

161-255S

161-318S

RDT Axial
Compensation
Tapping Collets

Part No.

160-141

160-168

160-194

Buy ER 16 Tapping Collets

RD/ER 20 COLLET SYSTEM

diagram showing height (as B) and width (as A) of collet
A = 21 mm. (0.83 in.)
B = 31 mm. (1.22 in.)

Collapse per collet: 1 mm. (0.039 in.)
Capacity per set: 1 – 13 mm. (0.039 – 0.512 in.)
Precision per DIN 6499
Maximum tightening torque: 60 ft./lbs.

Buy ER 20 Collets

RD/ER 20 INTERNAL & EXTERNAL COOLANT COLLETS

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK):

To direct fluid through the cutting tool.

ND COLLETS

Nominal size collets manufactured per DIN 6499 Form A are available in inch and metric sizes by special order, offering maximum 0.0003 in. TIR.

External Coolant Collets (EK):

RD/ER 20 TAPPING COLLETS

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

For use with any RD/ER collet chuck, these tapping collets help prevent tap breakage on machines requiring axial compensation. Friction-free ball-bearing drive. Metric sizes available upon request.

RD/ER 20 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision	0.5 Increments
Clamping Range		Part No.	Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.	Part No.
1-0.5	0.039-0.019			200-100
1.5-1	0.059-0.039			200-101
2-1	0.079-0.039	200-001	200-901
2.5-1.5	0.098-0.059	200-001	200-901	200-102
3-2	0.118-0.079	200-002	200-902
3.5-2.5	0.138-0.098	200-002	200-902	200-103
4-3	0.157-0.118	200-003	200-903
4.5-3.5	0.177-0.138	200-003	200-903	200-104
5-4	0.197-0.157	200-004	200-904
5.5-4.5	0.217-0.177	200-004	200-904	200-105
6-5	0.236-0.197	200-005	200-905
6.5-5.5	0.256-0.217	200-005	200-905	200-106
7-6	0.276-0.236	200-006	200-906
7.5-6.5	0.296-0.256	200-006	200-906	200-107
8-7	0.315-0.276	200-007	200-907
8.5-7.5	0.335-0.296	200-007	200-907	200-108
9-8	0.354-0.315	200-008	200-908
9.5-8.5	0.374-0.335	200-008	200-908	200-109
10-9	0.394-0.354	200-009	200-909
10.5-9.5	0.414-0.374			200-110
11-10	0.433-0.394	200-010	200-910
11.5-10.5	0.453-0.414			200-111
12-11	0.472-0.433	200-011	200-911
12.5-11.5	0.493-0.453			200-112
13-12	0.512-0.472	200-012	200-912
.5 – 13mm 12 Pc. Set		200-013	200-913

INCH SIZES
Standard Precision
Dia. (in.)	Part No.
1/16	200-501
3/32	200-502
1/8	200-503
5/32	200-504
3/16	200-505
7/32	200-506
1/4	200-507
9/32	200-508
5/16	200-509
11/32	200-510
3/8	200-511
13/32	200-512
7/16	200-513
15/32	200-514
1/2	200-515
1/16 – 1/2 15 Pc. Set	200-516

INTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	200IK03	1/8	200IK501
4	200IK04	5/32	200IK502
5	200IK05	3/16	200IK503
6	200IK06	7/32	200IK504
7	200IK07	1/4	200IK505
8	200IK08	9/32	200IK506
9	200IK09	5/16	200IK507
10	200IK10	11/32	200IK508
11	200IK11	3/8	200IK509
12	200IK12	13/32	200IK510
13	200IK13	7/16	200IK511
		15/32	200IK512
		1/2	200IK513

EXTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	200EK03	1/8	200EK501
4	200EK04	5/32	200EK502
5	200EK05	3/16	200EK503
6	200EK06	7/32	200EK504
7	200EK07	1/4	200EK505
8	200EK08	9/32	200EK506
9	200EK09	5/16	200EK507
10	200EK10	11/32	200EK508
11	200EK11	3/8	200EK509
12	200EK12	13/32	200EK510
13	200EK13	7/16	200EK511
		15/32	200EK512
		1/2	200EK513

NOTE: High precision also available in inch sizes.

Buy ER 20 Coolant Collets

RD/ER 20 TAPPING COLLETS

	RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	201-141
8	201-168
10	201-194
12	201-220
1/4	201-255
5/16	201-318
3/8	201-381
7/16	201-323
1/2	201-367

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

201-141S

201-168S

201-194S

201-220S

201-255S

201-318S

201-381S

201-323S

201-367S

RDT Axial
Compensation
Tapping Collets

Part No.

200-141T

200-168

200-194

200-220

200-255

Buy ER 20 Tapping Collets

RD/ER 25 COLLET SYSTEM

diagram showing height (as B) and width (as A) of collet
A = 26 mm. (1.02 in.)
B = 35 mm. (1.38 in.)

Collapse per collet: 1 mm. (0.039 in.)
Capacity per set: 1 – 16 mm. (0.039 – 0.630 in.)
Precision per DIN 6499
Maximum tightening torque: 70 ft./lbs.

Buy ER 25 Collets

RD/ER 25 INTERNAL & EXTERNAL COOLANT COLLETS

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK): To direct fluid through the cutting tool.

ND COLLETS

Nominal size collets manufactured per DIN 6499 Form A are available in inch and metric sizes by special order, offering maximum 0.0003 in. TIR.

External Coolant Collets (EK):

RD/ER 25 TAPPING COLLETS

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

For use with any RD/ER collet chuck, these tapping collets help prevent tap breakage on machines requiring axial compensation. Friction-free ball-bearing drive. Metric sizes available upon request.

Buy ER 25 Tapping Collets

RD/ER 25 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision	0.5 Increments
Clamping Range		Part No.	Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.	Part No.
1-0.5	0.039-0.019			250-100 250-101
1.5-1	0.059-0.039			250-100 250-101
2-1	0.079-0.039	250-001	250-901
2.5-1.5	0.098-0.059			250-102
3-2	0.118-0.079	250-002	250-902
3.5-2.5	0.138-0.098			250-103
4-3	0.157-0.118	250-003	250-903
4.5-3.5	0.177-0.138			250-104
5-4	0.197-0.157	250-004	250-904
5.5-4.5	0.217-0.177			250-105
6-5	0.236-0.197	250-005	250-905
6.5-5.5	0.256-0.217			250-106
7-6	0.276-0.236	250-006	250-906
7.5-6.5	0.296-0.256			250-107
8-7	0.315-0.276	250-007	250-907
8.5-7.5	0.335-0.296			250-108
9-8	0.354-0.315	250-008	250-908
9.5-8.5	0.374-0.335			250-109
10-9	0.394-0.354	250-009	250-909
10.5-9.5	0.414-0.374			250-110
11-10	0.433-0.394	250-010	250-910
11.5-10.51	0.453-0.414			250-111
12-11	0.472-0.433	250-011	250-911
12.5-11.5	0.493-0.453			250-112
13-12	0.512-0.472	250-012	250-912
13.5-12.5	0.532-0.493			250-113
14-13	0.551-0.512	250-013	250-913
14.5-13.5	0.571-0.532			250-114
15-14	0.591-0.551	250-014	250-914
15.5-14.5	0.611-0.571			250-115
16-15	0.630-0.591	250-015	250-915
.5 – 16mm 12 Pc. Set		250-016	250-916

INCH SIZES
Standard Precision
Dia. (in.)	Part No.
1/16	250-501
3/32	250-502
1/8	250-503
5/32	250-504
3/16	250-505
7/32	250-506
1/4	250-507
9/32	250-508
5/16	250-509
11/32	250-510
3/8	250-511
13/32	250-512
7/16	250-513
15/32	250-514
1/2	250-515
17/32	250-516
9/16	250-517
19/32	250-518
5/8	250-519
1/16 – 5/8 19 Pc. Set	250-520

INTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	250IK03	1/8	250IK501
4	250IK04	5/32	250IK502
5	250IK05	3/16	250IK503
6	250IK06	7/32	250IK504
7	250IK07	1/4	250IK505
8	250IK08	9/32	250IK506
9	250IK09	5/16	250IK507
10	250IK10	11/32	250IK508
11	250IK11	3/8	250IK509
12	250IK12	13/32	250IK510
13	250IK13	7/16	250IK511
14	250IK14	15/32	250IK512
15	250IK15	1/2	250IK513
16	250IK16	17/32	250IK514
		9/16	250IK515
		19/32	250IK516
		5/8	250IK517

EXTERNAL COOLANT COLLETS
Metric		Inch
Metric		Dia (in.)	Part No.
Dia (mm.)	Part No.	Dia (in.)	Part No.
3	250EK03	1/8	250EK501
4	250EK04	5/32	250EK502
5	250EK05	3/16	250EK503
6	250EK06	7/32	250EK504
7	250EK07	1/4	250EK505
8	250EK08	9/32	250EK506
9	250EK09	5/16	250EK507
10	250EK10	11/32	250EK508
11	250EK11	3/8	250EK509
12	250EK12	13/32	250EK510
13	250EK13	7/16	250EK511
14	250EK14	15/32	250EK512
15	250EK15	1/2	250EK513
16	250EK16	17/32	250EK514
		9/16	250EK515
		19/32	250EK516
		5/8	250EK517

Buy ER 25 Coolant Collets

RD/ER 25 TAPPING COLLETS

	RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	251-141
8	251-168
10	251-194
12	251-220
1/4	251-255
5/16	251-318
3/8	251-381
7/16	251-323
1/2	251-367
9/16	251-429
5/8	251-480
1/8 PIPE-SS 1/8 PIPE-LS	251-313 251-437

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

251-141S

251-168S

251-194S

251-220S

251-255S

251-318S

251-381S

251-323S

251-367S

251-429S

251-480S

251-313S
251-437S

RDT Axial Compensation Tapping Collets
Part No.
250-141
250-168
250-194
250-220
250-255
250-318
250-381
250-323
250-367

RD/ER 32 COLLET SYSTEM

diagram showing height (as B) and width (as A) of collet
A = 33 mm. (1.23 in.)
B = 40 mm. (1.58 in.)

Collapse per collet: 1 mm. (0.039 in.)
Capacity per set: 1 – 20 mm. (0.079 – 0.787 in.)
Precision per DIN 6499
Maximum tightening torque: 80 ft./lbs.

Buy ER 32 Collets

RD/ER 32 INTERNAL & EXTERNAL COOLANT COLLETS

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK): To direct fluid through the cutting tool.

External Coolant Collets (EK): To direct fluid through the collet to the cutting tool tip, allowing the use of standard cutting tools in coolant through applications or to route fluid through the tool and around the tool for higher coolant volume.

ND COLLETS

Nominal size collets manufactured per DIN 6499 Form A are available in inch and metric sizes by special order, offering maximum 0.0003 in. TIR.

RD/ER 32 TAPPING COLLETS

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

For use with any RD/ER collet chuck, these tapping collets help prevent tap breakage on machines requiring axial compensation. Friction-free ball-bearing drive. Metric sizes available upon request.

RD/ER 32 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision	0.5 Increments
Clamping Range		Part No.	Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.	Part No.
3-2	0.118-0.079	320-001	320-901
3.5-2.5	0.138-0.098			320-103
4-3	0.157-0.118	320-002	320-902
4.5-3.5	0.177-0.138			320-104
5-4	0.197-0.157	320-003	320-903
5.5-4.5	0.217-0.177			320-105
6-5	0.236-0.197	320-004	320-904
6.5-5.5	0.256-0.217			320-106
7-6	0.276-0.236	320-005	320-905
7.5-6.5	0.296-0.256			320-107
8-7	0.315-0.276	320-006	320-906
8.5-7.5	0.335-0.296			320-108
9-8	0.354-0.315	320-007	320-907
9.5-8.5	0.374-0.335			320-109
10-9	0.394-0.354	320-008	320-908
10.5-9.5	0.414-0.374			320-110
11-10	0.433-0.394	320-009	320-909
11.5-10.5	0.453-0.414			320-111
12-11	0.472-0.433	320-010	320-910
12.5-11.5	0.493-0.453			320-112
13-12	0.512-0.472	320-011	320-911
13.5-12.5	0.532-0.493			320-113
14-13	0.551-0.512	320-012	320-912
14.5-13.5	0.571-0.532			320-114
15-14	0.591-0.551	320-013	250-913
15.5-14.5	0.611-0.571			320-115
16-15	0.630-0.591	320-014	320-914
16.5-15.5	0.650-0.611			320-116
17-16	0.669-0.630	320-015	320-915
17.5-16.5	0.690-0.650			320-117
18-17	0.709-0.669	320-016	320-916
18.5-17.5	0.729-0.690			320-118
19-18	0.748-0.709	320-017	320-917
19.5-18.5	0.768-0.729			320-119
20-19	0.787-0.748	320-018	320-918
2 – 20mm 18 Pc. Set 6 – 20mm 14 Pc. Set		320-019 320-020	320-919

INCH SIZES
Standard Precision
Dia. (in.)	Part No.
3/32	320-501
1/8	320-502
5/32	320-503
3/16	320-504
7/32	320-505
1/4	320-506
9/32	320-507
5/16	320-508
11/32	320-509
3/8	320-510
13/32	320-511
7/16	320-512
15/32	320-513
1/2	320-514
17/32	320-515
9/16	320-516
19/32	320-517
5/8	320-518
21/32	320-519
11/16	320-520
23/32	320-521
3/4	320-522
3/32 – 3/4 22 Pc. Set	320-523
1/4 – 3/4 17 Pc. Set	320-525

Buy ER 32 Collets

RD/ER 32 TAPPING COLLETS

	RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	321-141
8	321-168
10	321-194
12	321-220
1/4	321-255
5/16	321-318
3/8	321-381
7/16	321-323
1/2	321-367
9/16	321-429
5/8	321-480
11/16	321-542
3/4	321-590
13/16	321-652
1/8 PIPE-SS	321-313
1/8 PIPE-LS	321-437
1/4 PIPE	321-562

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

321-141S

321-168S

321-194S

321-220S

321-255S

321-318S

321-381S

321-323S

321-367S

321-429S

321-480S

321-542S

321-590S

321-652S

321-313S

321-437S

321-562S

RDT Axial Compensation Tapping Collets
Part No.
320-141
320-168
320-194
320-220
320-255
320-318
320-381
320-323
320-367
320-429
–
–
–
–
–
320-437
–

Buy ER 32 Tapping Collets

RD/ER 40 COLLET SYSTEM

diagram showing height (as B) and width (as A) of collet
A = 41 mm. (1.61 in.)
B = 46 mm. (1.81 in.)

Collapse per collet: 1 mm. (0.039 in.)
Capacity per set: 3 – 26 mm. (0.018 – 1.024 in.)
Precision per DIN 6499
Maximum tightening torque: 90 ft./lbs.

Buy ER 40 Collets

RD/ER 40 INTERNAL & EXTERNAL COOLANT COLLETS

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK): To direct fluid through the cutting tool.

ND COLLETS

Nominal size collets manufactured per DIN 6499 Form A are available in inch and metric sizes by special order, offering maximum 0.0003 in. TIR.

RD/ER 40 TAPPING COLLETS

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

For use with any RD/ER collet chuck, these tapping collets help prevent tap breakage on machines requiring axial compensation. Friction-free ball-bearing drive. Metric sizes available upon request.

RD/ER 40 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision
Clamping Range		Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.
4-3	0.157-0.118	400-001	400-901
5-4	0.197-0.157	400-002	400-902
6-5	0.236-0.197	400-003	400-903
7-6	0.276-0.236	400-004	400-904
8-7	0.315-0.276	400-005	400-905
9-8	0.354-0.315	400-006	400-906
10-9	0.394-0.354	400-007	400-907
11-10	0.433-0.394	400-008	400-908
12-11	0.472-0.433	400-009	400-909
13-12	0.512-0.472	400-010	400-910
14-13	0.551-0.512	400-011	400-911
15-14	0.591-0.551	400-012	400-912
16-15	0.630-0.591	400-013	400-913
17-16	0.669-0.630	400-014	400-914
18-17	0.709-0.669	400-015	400-915
19-18	0.748-0.709	400-016	400-916
20-19	0.787-0.748	400-017	400-917
21-20	0.827-0.787	400-018	400-918
22-21	0.866-0.827	400-019	400-919
23-22	0.906-0.866	400-020	400-920
24-23	0.945-0.906	400-021	400-921
25-24	0.984-0.945	400-022	400-922
26-25	1.024-0.984	400-023	400-923
3 – 26mm 23 Pc. Set 9 – 26mm 17 Pc. Set		400-024	400-924
3 – 26mm 23 Pc. Set 9 – 26mm 17 Pc. Set		400-030

NOTE: High precision also
available in inch sizes.

INCH SIZES
Standard Precision
Dia. (in.)	Part No.
1/8	400-501
5/32	400-502
3/16	400-503
7/32	400-504
1/4	400-505
9/32	400-506
5/16	400-507
11/32	400-508
3/8	400-509
13/32	400-510
7/16	400-511
15/32	400-512
1/2	400-513
17/32	400-514
9/16	400-515
19/32	400-516
5/8	400-517
21/32	400-518
11/16	400-519
23/32	400-520
3/4	400-521
25/32	400-522
13/16	400-523
27/32	400-524
7/8	400-525
29/32	400-526
15/16	400-527
31/32	400-528
1	400-529
1/8 – 1 in. 25 Pc. Set	400-530
3/8-1 in. 21 Pc. Set	400-531

Buy ER 40 Collets

RD/ER 40 TAPPING COLLETS

RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
0-6	401-141
8	401-168
10	401-194
12	401-220
1/4	401-255
5/16	401-318
3/8	401-141
7/16	401-323
1/2	401-367
9/16	401-429
5/8	401-480

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

–

401-255S

401-318S

401-381S

401-323S

401-367S

401-429S

401-480S

RDT Axial Compensation Tapping Collets
Part No.
400-141
400-168
400-194
400-220
400-255
400-318
400-381
400-323
400-367
400-429
400-480

RTS Rigid Tapping Collets
ANSI Tap Size	Part No.
11/16	401-542
3/4	401-590
13/16	401-652
7/8	401-697
15/16	401-760
1	401-800
1/8 PIPE-SS	401-313
1/8 PIPE-LS	401-437
1/4 PIPE	401-562
3/8 PIPE	401-700
1/2 PIPE	401-687

RTS Internal
Coolant Rigid
Tapping Collets

Part No.

401-542S

401-590S

401-652S

401-697S

401-760S

401-800S

401-313S

401-437S

401-562S

401-700S

401-687S

RDT Axial
Compensation
Tapping Collets

Part No.

400-542

–

400-437

400-562

–

Buy ER 40 Tapping Collets

RD/ER 40 INTERNAL & EXTERNAL COOLANT COLLETS

Sealed for coolant-through applications, with pressure resistance tested to 1000 p.s.i. Sealed collets are high precision exact size collets and have no collapse range.

Internal Coolant Collets (IK): To direct fluid through the cutting tool.

Buy ER 40 Coolant Collets

RD/ER 50 COLLET SYSTEM

diagram showing height (as B) and width (as A) of collet
A = 52mm. (2.05 in.)
B = 60 mm. (2.36 in.)

Collapse per collet: 2 mm. (0.079 in.)
Capacity per set: 10 – 24 mm. (0.394 – 1.339 in.)
Precision per DIN 6499

RD/ER 50 COLLETS

		METRIC SIZES
Clamping Range		Standard Precision	High Precision
Clamping Range		Part No.	Part No.
(mm.)	(in.)	Part No.	Part No.
12-10	0.472-0.394	500-001	500-901
14-12	0.551-0.472	500-002	500-902
16-14	0.630-0.551	500-003	500-903
18-16	0.709-0.630	500-004	500-904
20-18	0.787-0.709	500-005	500-905
22-20	0.866-0.787	500-006	500-906
24-22	0.945-0.866	500-007	500-907
26-24	1.024-0.945	500-008	500-908
28-26	1.102-1.024	500-009	500-909
30-28	1.181-1.102	500-010	500-910
32-30	1.260-1.181	500-011	500-911
34-32	1.339-1.260	500-012	500-912
12 Pc. Set		500-013	500-913

NOTE: High precision inch size, coolant and coolant tapping collets are available upon request.

INCH SIZES
Standard Precision
Size Inch	Part No.
1/4	500-505
5/16	500-507
3/8	500-511
7/16	500-512
1/2	500-513
9/16	500-515
5/8	500-517
11/16	500-519
3/4	500-521
13/16	500-523
7/8	500-525
15/16	500-527
1″	500-529
1-1/16	500-531
1-1/8	500-533
1-3/16	500-535
1-1/4	500-537
1-5/16	500-539

INCH SIZES
Tapping
Size Inch	Part No.
1/4	501-255
5/16	501-318
3/8	501-381
7/16	501-323
1/2	501-367
9/16	501-429
5/8	501-480
11/16	501-542
3/4	501-590
13/16	501-652
7/8	501-697
15/16	501-760
1″	501-800
1-1/18	501-896
1-1/4	501-1021
PipeTap Sizes
1/8 SS	501-313
1/8 LS	501-437
1/4 P	501-562
3/8 P	501-700
1/2 P	501-687
3/4 P	501-906
1″	501-1125

Buy ER 50 Collets

RTX COLLETS

FEATURES

FOR IMPROVED ACCURACY IN ER COLLET CHUCKS OVER THE ENTIRE CLAMPING RANGE

Four times more accurate than conventional RD/ER collet systems
Improved tool life, increased feed rates, and improved workpiece finish and accuracy
Use standard RD/ER collet chucks with RTX clamping nut
RTX collet nut provides better balance for high-speed machining, with easy collet insertion and extraction
True single-angle design for powerful tool holding strength

Collet

Series

Clamping Range-D

Maximum

TIR

Minimum

Maximum

RTX16

RTX20

RTX25

RTX32

RTX40

0.019

0.039

0.079

0.118

0.394

0.512

0.630

0.787

1.024

0.00019

Centaur RTX Collets and Chucks

RTX COLLETS

METRIC SIZES
Clamp Range	RTX16 Part No.	RTX20 Part No.	RTX25 Part No.	RTX32 Part No.	RTX40 Part No.
1-0.5	162-001
2-1	162-002	202-001	252-001
3-2	162-003	202-002	252-002	322-001
4-3	162-004	202-003	252-003	322-002	402-001
5-4	162-005	202-004	252-004	322-003	402-002
6-5	162-006	202-005	252-005	322-004	402-003
7-6	162-007	202-006	252-006	322-005	402-004
8-7	162-008	202-007	252-007	322-006	402-005
9-8	162-009	202-008	252-008	322-007	402-006
10-9	162-010	202-009	252-009	322-008	402-007
11-10		202-010	252-010	322-009	402-008
12-11		202-011	252-011	322-010	402-009
13-12		202-012	252-012	322-011	402-010
14-13			252-013	322-012	402-011
15-14			252-014	322-013	402-012
16-15			252-015	322-014	402-013
17-16				322-015	402-014
18-17				322-016	402-015
19-18				322-017	402-016
20-19				322-018	402-017
21-20					402-018
22-21					402-019
23-22					402-020
24-23					402-021
25-24					402-022
26-25					402-023

INCH SIZES
Diameter	RTX16 Part No.	RTX20 Part No.	RTX25 Part No.	RTX32 Part No.	RTX40 Part No.
1/16	162-501	202-501	252-501
3/32	162-502	202-502	252-502	322-501
1/8	162-503	202-503	252-503	322-502	402-501
5/32	162-504	202-504	252-504	322-503	402-502
3/16	162-505	202-505	252-505	322-504	402-503
7/32	162-506	202-506	252-506	322-505	402-504
1/4	162-507	202-507	252-507	322-506	402-505
9/32	162-508	202-508	252-508	322-507	402-506
5/16	162-509	202-509	252-509	322-508	402-507
11/32	162-510	202-510	252-510	322-509	402-508
3/8	162-511	202-511	252-511	322-510	402-509
13/32	162-512	202-512	252-512	322-511	402-510
7/16		202-513	252-513	322-512	402-511
15/32		202-514	252-514	322-513	402-512
1/2		202-515	252-515	322-514	402-513
17/32			252-516	322-515	402-514
9/16			252-517	322-516	402-515
19/32			252-518	322-517	402-516
5/8			252-519	322-518	402-517
21/32				322-519	402-518
11/16				322-520	402-519
23/32				322-521	402-520
3/4				322-522	402-521
25/32					402-522
13/16					402-523
27/32					402-524
7/8					402-525
29/32					402-526
15/16					402-527
31/32					402-528
1					402-529

Buy RTX Collets

RTX COLLET SETS

Collet

Series

Description

Part

No.

RTX16

RTX20

RTX25

RTX32

RTX40

10 Pc. Metric Set

12 Pc. Inch Set

12 Pc. Metric Set

15 Pc. Inch Set

15 Pc. Metric Set

19 Pc. Inch Set

18 Pc. Metric Set

22 Pc. Inch Set

23 Pc. Metric Set

29 Pc. Inch Set

162-011

162-513

202-013

202-516

252-016

252-520

322-019

322-523

402-024

402-530

Buy RTX Collet Sets

RTX COLLET NUTS

Collet
Series

Part
No.

RTX16

RTX20

RTX25

RTX32

RTX40

302-116

302-220

302-225

302-232

302-240

Buy RTX Collet Nuts

STRAIGHT-SHANK RD/ER COLLET CHUCKS (with Step)

Centaur Straight-Shank ER Collet Chuck with Step

diagram of straight-shank ER collet chuck

	Part No.	A		B		B1		D		Nut Style/Part No.	Wrench
	Part No.	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	Nut Style/Part No.	Wrench
RD 11	71145 81156 141154	7 8	0.28 0.31 1/4	58 70 58	2.28 2.76 2.28	45 56 45	1.77 2.20 1.77	16 16 16	0.63 0.63 0.63	M-30011 M-30011 M-30011	22011 22011 22011
RD 16	101644 101660 101680 121680 121681 141630 141660 161660 381644 121654 581660 581680 341650 341680 341600 1141600	10 10 10 12 12 14 14 16	0.39 0.39 0.39 0.47 0.47 0.55 0.55 0.63 3/8 1/2 5/8 5/8 3/4 3/4 3/4 1-1/4	70 86 105 105 105 55 97 90 70 168 85 105 79 110 125 85	2.76 3.39 4.72 4.13 4.13 2.17 3.82 3.55 2.76 6.61 3.35 4.13 3.11 4.33 4.92 3.35	44 60 80 80 80 30 60 60 44 154 60 80 50 80 100 60	1.73 2.36 3.15 3.15 3.15 1.18 2.36 2.36 1.73 6.06 2.36 3.15 1.97 3.15 3.94 2.36	22 22 22 22 28 28 28 28 22 22 28 28 28 28 28 28	0.87 0.87 0.87 0.87 1.10 1.10 1.10 1.10 0.87 0.87 1.10 1.10 1.10 1.10 1.10 1.10	M-30016 M-30016 M-30016 M-30016 H-30116 H-30116 H-30116 H-30116 M-30016 M-30016 H-30116 H-30116 H-30116 H-30116 H-30116 H-30116	22016 22016 22016 22016 22325 22325 22325 22325 22016 22016 22325 22325 22325 22325 22325 22325
RD 20	122000 152000 162000 203020 582000	12 15 16 20	0.47 0.59 0.63 0.79 5/8	142 142 142 72 142	5.60 5.60 5.60 2.17 5.60	100 100 100 30 100	3.94 3.94 3.94 1.18 3.94	28 28 28 34 28	1.10 1.10 1.10 1.34 1.10	M-30020 M-30020 M-30020 H-30120 H-30120	22020 22020 22020 22330 22330
RD 25	202550 202500 252550 252500 582550 342550 342500	20 20 25 25	0.79 0.79 0.98 0.98 5/8 3/4 3/4	85 135 85 135 85 85 135	3.35 5.31 3.35 5.31 3.35 3.35 5.31	50 100 50 100 50 50 100	1.97 3.94 1.97 3.94 1.97 1.97 3.94	42 42 42 42 42 42 42	1.65 1.65 1.65 1.65 1.65 1.65 1.65	E-30125 E-30125 E-30125 E-30125 E-30125 E-30125 E-30125	22125 22125 22125 22125 22125 22125 22125
RD 32	203235 203250 253250 1003250 1143250 1143260	20 20 25	0.79 0.79 0.98 1 1-1/4 1-1/4	83 98 95 95 98 108	3.27 3.85 3.74 3.74 3.85 4.25	35 50 50 50 50 60	1.38 1.97 1.97 1.97 1.97 2.36	50 50 50 50 50 50	1.97 1.97 1.97 1.97 1.97 1.97	E-30132 E-30132 E-30132 E-30132 E-30132 E-30132	22132 22132 22132 22132 22132 22132
RD 40	254050 1004050 10040238 1144060	25	0.98 1 1 1-1/4	95 95 106 105	3.74 3.74 4.17 4.13	50 50 61 60	1.97 1.97 2.38 2.36	63 63 63 63	2.48 2.48 2.48 2.48	E-30140 E-30140 E-30140 E-30140	22140 22140 22140 22140

Buy ER Collet Chucks Step

STRAIGHT-SHANK RD/ER COLLET CHUCKS (Extension Style)

Centaur Straight-Shank ER Collet Chucks Extension Style

diagram of Straight-Shank ER Collet Chuck Extension Style

	Part No.	A		B		B1		D		Nut Style/Part No.	Wrench
	Part No.	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	Nut Style/Part No.	Wrench
RD 8	80856 80880 1008856 10080 12080 50080	8 8 10 10 12	0.31 0.31 0.39 0.39 0.47 1/2	70 100 70 100 95 95	2.76 3.94 2.76 3.94 3.74 3.74	56 80 56 80 80 80	2.20 3.15 2.20 3.15 3.15 3.15	12 12 12 12 12 12	0.47 0.47 0.47 0.47 0.47 0.47	M-30008 M-30008 M-30008 M-30008 M-30008 M-30008	22008 22008 22008 22008 22008 22008
RD 11	201180 201115 221100* 121154 121180 121181 5811140 5811200 5811300 581154 581155 341185† 34200011† 34285011† 344011 1001180	20 20 22	0.79 0.79 0.88 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 3/4 3/4 3/4 3/4 1	100 145 130 168 100 100 155 64 90 168 168 100 51 72 102 93	3.94 5.71 5.12 6.61 3.94 3.94 6.10 2.50 3.51 6.61 6.61 3.94 2.00 2.85 4.00 3.66	80 115 100 154 80 80 140 51 76 154 154 85 25 49 89 80	3.15 4.53 3.94 6.06 3.15 3.15 5.51 2.00 3.00 6.06 6.06 3.35 1.00 1.92 3.50 3.15	16 19 19 16 16 19 19 16 16 16 19 16 16 16 16 16	0.63 0.75 0.75 0.63 0.63 0.75 0.75 0.63 0.63 0.63 0.75 0.63 0.63 0.63 0.63 0.63	M-30011 H-30111 H-30111 M-30011 M-30011 H-30111 H-30111 M-30011 M-30011 M-30011 H-30111 M-30011 M-30011 M-30011 M-30011 M-30011	22011 22317 22317 22011 22011 22317 22317 22011 22011 22011 22317 22011 22011 22011 22011 22011
RD 12	141225 201280 10012140	14 20	0.55 0.79 1	38 93 153	1.50 3.66 6.02	25 80 140	0.98 3.15 5.51	19 19 19	0.75 0.75 0.75	H-30112 H-30112 H-30112	22317 22317 22317
RD 16	441660 201630 201650 201600 201601 221680* 221634* 581681 581614 581654 341670† 341680 341681 341690† 341610 341634 341654 101600 101614	14 20 20 20 20 22 22	0.55 0.79 0.79 0.79 0.79 0.88 0.88 5/8 5/8 5/8 3/4 3/4 3/4 3/4 3/4 3/4 3/4 1 1	85 55 79 125 135 103 160 105 157 179 116 103 115 136 135 160 189 134 157	3.35 2.17 3.10 4.92 5.31 4.06 6.30 4.13 6.18 7.04 4.60 4.05 4.52 5.35 5.31 6.40 7.44 5.28 6.18	60 30 50 100 100 80 134 80 140 154 70 80 80 90 100 134 154 100 140	2.36 1.18 1.97 3.94 3.94 3.15 5.28 3.15 5.51 6.06 2.76 3.15 3.15 3.54 3.94 5.28 6.06 3.94 5.51	28 28 28 28 22 28 28 22 28 22 22 28 22 22 22 22 22 28 28	1.10 1.10 1.10 1.10 0.87 1.10 1.10 0.87 1.10 0.87 0.87 1.10 0.87 0.87 0.87 0.87 0.87 1.10 1.10	H-30116 H-30116 H-30116 H-30116 M-30016 H-30116 H-30116 M-30016 H-30116 M-30016 M-30016 H-30116 M-30016 M-30016 M-30016 M-30016 M-30016 H-30116 H-30116	22325 22325 22325 22325 22016 22325 22325 22016 22325 22016 22016 22325 22016 22016 22016 22016 22016 22325 22325
RD 20	202000 202100 2220100* 2220120* 222080* 3420100 1002034 1002034H	20 20 22 22 22	0.79 0.79 0.88 0.88 0.88 3/4 1 1	142 142 140 160 120 142 173 173	5.60 5.60 5.52 6.30 4.72 5.60 6.81 6.81	100 100 100 120 80 100 134 134	3.94 3.94 3.94 4.72 3.15 3.94 5.28 5.28	28 34 34 34 34 28 28 34	1.10 1.34 1.34 1.34 1.34 1.10 1.10 1.34	M-30020 H-30120 H-30120 H-30120 H-30120 M-30020 M-30020 H-30120	22020 22330 22330 22330 22330 22020 22020 22330
RD 25	252500 1002550 1002500 1002550M 1002500M	25	0.98 1 1 1 1	135 85 135 85 135	5.31 3.35 5.31 3.35 5.31	100 50 100 50 100	3.94 1.97 3.94 1.97 3.94	42 42 42 35 35	1.65 1.65 1.65 1.38 1.38	E-30125 E-30125 E-30125 M-30025 M-30025	22125 22125 22125 22025 22025
*Holders for Star machines. †Double-End Style

Buy ER Collet Chucks Extension

RD/ER MASTER TOOLING SETS

Centaur ER Master Tooling Set

Part No.

Collet
Type

No. Of Collets

Range

Chuck

Nut

Wrench

(mm.)

(in.)

MSO 08080
MSO 11154
MSO 11254
MSO 16140
MSO 16134
MSO 160C40
MSO 160B40
MSO 20134
MSO 200C40
MSO 25100
MSO 250C40
MSO 32050
MSO 32060
MSO 32008
MSO 320C40
MSO 320C50
MSO 320B40
MSO 320B50
MSO 40050
MSO 40008
MSO 400C40
MSO 400C50
MSO 400B40
MSO 400B50

RD 8
RD 11
RD 11
RD 16
RD 16
RD 16
RD 16
RD 20
RD 20
RD 25
RD 25
RD 32
RD 32
RD 32
RD 32
RD 32
RD 32
RD 32
RD 40
RD 40
RD 40
RD 40
RD 40
RD 40

9
13
13
10
10
10
10
12
12
15
15
18
18
18
18
18
18
18
23
23
23
23
23
23

0.5 – 5
0.5 – 7
0.5 – 7
0.5 – 10
0.5 – 10
0.5 – 10
0.5 – 10
1 – 13
1 – 13
1 – 16
1 – 16
2 – 20
2 – 20
2 – 20
2 – 20
2 – 20
2 – 20
2 – 20
3 – 26
3 – 26
3 – 26
3 – 26
3 – 26
3 – 26

0.019 – 0.177
0.019 – 0.276
0.019 – 0.276
0.019 – 0.394
0.019 – 0.394
0.019 – 0.394
0.019 – 0.394
0.039 – 0.512
0.039 – 0.512
0.039 – 0.630
0.039 – 0.630
0.079 – 0.787
0.079 – 0.787
0.079 – 0.787
0.079 – 0.787
0.079 – 0.787
0.079 – 0.787
0.079 – 0.787
0.118 – 1.024
0.118 – 1.024
0.118 – 1.024
0.118 – 1.024
0.118 – 1.024
0.118 – 1.024

Cyl. 8 X 80
Cyl. 5/8 X 154
Cyl. 1/2 X 154
Cyl. 1 X 140
Cyl. 3/4 X 134
CAT 40
BT 40
Cyl. 1 X 134
CAT 40
Cyl. 1 X 10
CAT 40
Cyl. 1 X 50
Cyl. 1-1/4 X 60
R8
CAT 40
CAT 50
BT 40
BT 50
Cyl. 1 X 50
R8
CAT 40
CAT 50
BT 40
BT 50

RD 8 M
RD 11 M
RD 11 M
RD 16 H
RD 16 M
RD 16 H
RD 16 H
RD 20 M
RD 20 H
RD 25 E
RD 25 E
RD 32 E
RD 32 E
RD 32 E
RD 32 E
RD 32 E
RD 32 E
RD 32 E
RD 40 E
RD 40 E
RD 40 E
RD 40 E
RD 40 E
RD 40 E

E 8 M
E 11 M
E 11 M
GS 25
E 16 M
GS 25
GS 25
E 20 M
GS 30
E 25
E 25
E 32
E 32
E 32
E 32
E 32
E 32
E 32
E 40
E 40
E 40
E 40
E 40
E 40

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RD/ER WOODEN TOOL TRAYS

ER Wooden Tool Trays

Part No.

Description

Collet Capacity

TRYRD8
TRYRD11
TRYRD16
TRYRD16I
TRYRD20
TRYRD20I
TRYRD25
TRYRD25I
TRYRD32
TRYRD32I
TRYRD40

RD 8 Metric
RD 11 Metric
RD 16 Inch
RD 16 Inch
RD 20 Metric
RD 20 Inch
RD 25 Metric
RD 25 Inch
RD 32 Metric
RD32 Inch.
RD 40 Metric

10
14
10
12
12
16
15
19
18
22
23

All listed items included in fitted wooden box.
Buy ER Wooden Tool Trays

RD/ER WOODEN TOOL BOXES

	Part No.	Description	Collet Capacity
	WBXRD8 WBXRD11 WBXRD16 WBXRD20 WBXRD25 WBXRD32 WBXRD40	RD 8 Box RD 11 Box RD 16 Box RD 20 Box RD 25 Box RD 32 Box RD 40 Box	9 13 10 12 15 18 23

BT RD/ER COLLET CHUCKS

STANDARD
LENGTH

Centaur BT ER Collet Chucks standard length

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	1614016 1624016 1634800	BT 30 BT 35 BT 40	70 70 70	2.76 2.76 2.76	28 28 28	1.10 1.10 1.10	M12 M12 M16	H-30116 H-30116 H-30116	22325 22325 22325
RD 20	1614020 1624020 1634801	BT 30 BT 35 BT 40	70 70 70	2.76 2.76 2.76	34 34 34	1.34 1.34 1.34	M12 M12 M16	H-30120 H-30120 H-30120	22330 22330 22330
RD 25	1614025 1624025 1634025	BT 30 BT 35 BT 40	60 60 70	2.36 2.36 2.76	42 42 42	1.65 1.65 1.65	M12 M12 M16	E-30125 E-30125 E-30125	22125 22125 22125
RD 32	1614532 1624032 1634802	BT 30 BT 35 BT 40	70 70 70	2.76 2.76 2.76	50 50 50	1.97 1.97 1.97	M12 M12 M16	E-30132 E-30132 E-30132	22132 22132 22132
RD 40	1634803 1644851 1654804	BT 40 BT 45 BT 50	80 80 80	3.15 3.15 3.15	63 63 63	2.48 2.48 2.48	M16 M20 M24	E-30140 E-30140 E-30140	22140 22140 22140
RD 50	1644852 1654852	BT 45 BT 50	80 80	3.15 3.15	78 78	3.07 3.07	M20 M24	E-30150 E-30150	22150 22150

Wrenches and Retention knobs are sold separately.
Buy BT ER Collet Chucks Standard

EXTENDED
LENGTH

BT ER Collet Chucks extended length

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	1614516 1624516 1634516 1644516 1654516	BT 30 BT 35 BT 40 BT 45 BT 50	120 120 125 125 135	4.73 4.73 4.93 4.93 5.32	22 22 22 22 22	0.87 0.87 0.87 0.87 0.87	M12 M12 M16 M20 M24	M-30016 M-30016 M-30016 M-30016 M-30016	22016 22016 22016 22016 22016
RD 20	1624520 1634520 1654520	BT 35 BT 40 BT 50	135 135 135	5.32 5.32 5.32	28 28 28	1.10 1.10 1.10	M12 M16 M24	M-30020 M-30020 M-30020	22020 22020 22020
RD 25	1634425 1634525	BT 40 BT 40	135 150	2.76 5.91	28 35	1.10 1.38	M12 M16	M-30025 M-30025	22025 22025
RD 32	1624132 1634810	BT 35 BT 40	100 100	3.94 3.94	50 50	1.97 1.97	M12 M16	E-30132 E-30132	22132 22132
RD 50	1654805	BT 50	100	3.94	78	3.07	M24	E-30150	22150

Balanced to 22,000 RPM upon request.
Buy BT ER Collet Chucks Extended

CAT (V-Flange) RD/ER COLLET CHUCKS

STANDARD
LENGTH

Centaur CAT ER Collet Chuck standard length

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 11	C40RD11	CAT 40	76	3.00	16	0.63	5/8-11	M-30011	22011
RD 16	654016 654016M C40RD16 C50RD16	CAT 40 CAT 40 CAT 40 CAT 50	70 70 64 102	2.76 2.76 2.50 4.00	28 22 32 32	1.10 0.87 1.36 1.36	5/8-11 5/8-11 5/8-11 1-8	H-30116 M-30016 E-30126 E-30126	22325 22016 22116 22116
RD 20	654020 C40RD20	CAT 40 CAT 40	70 76	2.76 3.00	34 35	1.34 1.38	5/8-11 5/8-11	H-30120 E-30127	22330 22120
RD 25	654025 C40RD25 664625 674025 C50RD25	CAT 40 CAT 40 CAT 45 CAT 50 CAT 50	70 64 70 90 102	2.76 2.50 2.76 3.54 4.00	42 42 42 42 42	1.65 1.65 1.65 1.65 1.65	5/8-11 5/8-11 3/4-10 1-8 1-8	E-30125 E-30125 E-30125 E-30125 E-30125	22125 22125 22125 22125 22125
RD 32	654802 C40RD32 674801	CAT 40 CAT 40 CAT 50	70 76 100	2.76 3.00 3.94	50 50 50	1.97 1.97 1.97	5/8-11 5/8-11 1-8	E-30132 E-30132 E-30132	22132 22132 22132
RD 40	654803 674803	CAT 40 CAT 50	80 100	3.15 3.94	63 63	2.48 2.48	5/8-11 1-8	E-30140 E-30140	22140 22140
RD 50	664852	CAT 45	80	3.15	78	3.07	3/4-10	E-30150	22150

Wrenches and Retention knobs are sold separately.

Buy CAT ER Collet Chucks Standard

EXTENDED
LENGTH

CAT ER Collet Chuck extended length

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	624516 654516 C40RDE16 664516 674516 C50RDEX16	CAT 30 CAT 40 CAT 40 CAT 45 CAT 50 CAT 50	120 125 127 125 125 178	4.73 4.93 5.00 4.93 4.93 7.00	22 22 32 22 22 32	0.87 0.87 1.36 0.87 0.87 1.36	1/2-13 5/8-11 5/8-11 3/4-10 1-8 1-8	M-30016 M-30016 E-30126 M-30016 M-30016 E-30126	22016 22016 22116 22016 22016 22016
RD 20	654520 C40RDE20 C40RDEX20 664520 674520	CAT 40 CAT 40 CAT 40 CAT 45 CAT 50	135 102 134 135 135	5.32 4.00 5.25 5.32 5.32	28 35 35 28 28	1.10 1.38 1.38 1.10 1.10	5/8-11 5/8-11 5/8-11 3/4-10 1-8	M-30020 E-30127 E-30127 M-30020 M-30020	22020 22120 22120 22020 22020
RD 25	650025 654525 C40RDE25 C40RDEX25 664525 C50RDE25	CAT 40 CAT 40 CAT 40 CAT 40 CAT 45 CAT 50	100 150 102 153 150 153	3.94 5.91 4.00 6.00 5.91 6.00	35 35 42 42 35 42	1.38 1.38 1.65 1.65 1.38 1.65	5/8-11 5/8-11 5/8-11 5/8-11 3/4-10 1-8	M-30025 M-30025 E-30125 E-30125 M-30025 E-30125	22025 22025 22125 22125 22025 22125
RD 32	C40RDE32 C40RDEX32 674802	CAT 40 CAT 40 CAT 50	102 153 160	4.00 6.00 6.30	50 50 50	1.97 1.97 1.97	5/8-11 5/8-11 1-8	E-30132 E-30132 E-30132	22132 22132 22132
RD 40	654804 674804	CAT 40 CAT 50	153 160	6.00 6.30	63 63	2.48 2.48	5/8-11 1-8	E-30140 E-30140	22140 22140
RD 50	674805	CAT 50	100	3.94	78	3.07	1-8	E-30150	22150

Buy CAT ER Collet Chucks Extended

SHORT & RIGID RD/ER CAT V-FLANGE COLLET CHUCKS

STANDARD LENGTH

	Part No.	Taper	G/L mm/inch	D mm/inch	Ret. Knob Threading No.	Nut	Wrench
C40	C40RDSR16 C40RDSR20 C40RDSR25 C40RDSR32	V40 V40 V40 V40	23.5/.93 24.2/.95 24.2/.95 25.4/1	24/.95 28/1.1 32/1.26 40/1.58	M16 M16 M16 M16	35216 35220 35225 35232	35443 35443 35444 35444
C50	C50RDSR16 C50RDSR20 C50RDSR25 C50RDSR32 C50RDSR40	V50 V50 V50 V50 V50	23.5/.93 24.2/.95 24.2/.95 25.4/1” 26.6/1.05	24/.95 28/1.1 32/1.26 40/1.58 50/1.97	M24 M24 M24 M24 M24	35216 35220 35225 35232 35240	35443 35443 35444 35444 35444

Shortest possible gage length by design for maximum tool rigidity.
Wrenches and Retention knobs are sold separately.

Buy ER CAT Collet Chucks Rigid

SHORT AND RIGID BT COLLET CHUCKS

STANDARD LENGTH

BT collet chucks

	Part No.	Taper	G/L mm/inch	D mm/inch	Ret. Knob Threading No.	Nut	Wrench
C40	B40RDSR16 B40RDSR20 B40RDSR25 B40RDSR32	BT40 BT40 BT40 BT40	31/1.22 32/1.26 32/1.26 33.5/1.32	24/.95 28/1.1 32/1.26 40/1.58	24/.95 28/1.1 32/1.26 40/1.58	35216 35220 35225 35232	35443 35443 35444 35444
C50	B50RDSR16 B50RDSR20 B50RDSR25 B50RDSR32 B50RDSR40	BT50 BT50 BT50 BT50 BT50	42/1.65 43/1.69 43/1.69 40/1.57 50/1.97	24/.95 28/1.1 32/1.26 40/1.58 50/1.97	M24 M24 M24 M24 M24	35216 35220 35225 35232 35240	35443 35443 35444 35444 35444

Shortest possible gage length by design for maximum tool rigidity.
Wrenches and Retention knobs are sold separately.

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NMTB/ISO RD/ER COLLET CHUCKS

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	604816	NMT 40	50	1.97	28	1.10	5/8-11	H-30116	22325
RD 20	604820	NMT 40	50	1.97	34	1.34	5/8-11	H-30120	22330
RD 32	604801 604802	NMT 30 NMT 40	50 50	1.97 1.97	50 50	1.97 1.97	1/2-13 5/8-11	E-30132 E-30132	22132 22132
RD 40	604803 604804 3604040	NMT 40 NMT 50 ISO 40	50 60 50	1.97 2.36 1.97	63 63 63	2.48 2.48 2.43	5/8-11 1-8 M16	E-30140 E-30140 E-30140	22140 22140 22140
RD 50	604805 3605050	NMT 50 ISO 50	65 65	2.56 2.56	78 78	3.07 3.07	1-8 M24	E-30150 E-30150	22150 22150

Wrenches are sold separately.

R8 RD/ER COLLET CHUCKS

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	MSOR816	R8	32	1.26	28	1.10	7/16-20	H-30116	22325
RD 32	MSOR832	R8	35	1.38	50	1.97	7/16-20	E-30132	22132
RD 40	MSOR840	R8	70	2.76	63	2.48	7/16-20	E-30140	22140

Wrenches are sold separately.

Buy R8 ER Collet Chucks

MORSE TAPER RD/ER COLLET CHUCKS

	Part No.	Taper	A		D		Ret. Knob Threading No.	Nut Style/Part No.	Wrench
	Part No.	Taper	(mm.)	(in.)	(mm.)	(in.)	Ret. Knob Threading No.	Nut Style/Part No.	Wrench
RD 16	516-113	MT 2	32	1.26	28	1.10	M10	H-30116	22325
RD 20	520-113	MT 2	43	1.69	34	1.34	M10	H-30120	22330
RD 25	525-116	MT 2	47	1.85	42	1.65	M10	E-30125	22125
RD 32	532-123 532-124	MT 3 MT 4	64 54	2.52 2.13	50 50	1.97 1.97	M12 M16	E-30132 E-30132	22132 22132
RD 40	540-123 540-124	MT 3 MT 4	64 75	2.52 2.96	63 63	2.48 2.48	M12 M16	E-30140 E-30140	22140 22140

Wrenches are sold separately.

Part No.	Taper	Threading
4220010 4230012 4240016	MT2 MT3 MT4	M10 M12 M16

TANGS FOR
MORSE TAPER
COLLET CHUCKS
SOLD SEPARATELY

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RD/ER HSK COLLET CHUCKS

Part No.	D (mm.)(in.)		A (mm.)(in.)		Nut Style/ Part No.	Wrench
HSK63ARD16 HSK63ARD20 HSK63ARD25 HSK63ARD32 HSK63ARD40	22 35 42 50 63	0.87 1.38 1.65 1.97 2.48	100 100 100 100 120	3.94 3.94 3.94 3.94 4.73	M-30016 E-30127 E-30125 E-30132 E-30140	22016 22120 22125 22132 22140

NOTE: HSK Endmill and Shellmill holders are available upon request.

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RD/ER FLOATING REAMER HOLDERS

	Part No.	D		L		A		B		Float		Nut Style/ Part No.	Wrench
	Part No.	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	(mm.)	(in.)	Nut Style/ Part No.	Wrench
RD 11	160011 580011 340011	16	– 5/8 3/4	46 46 46	1.81 1.81 1.81	40 40 40	1.57 1.57 1.57	22 22 22	0.86 0.86 0.86	1 1 1	0.04 0.04 0.04	H-30111 H-30111 H-30111	22317 22317 22317
RD 16	160016 340016 100016	16	– 3/4 1.00	35 35 35	1.38 1.38 1.38	33 33 33	1.30 1.30 1.30	28 28 28	1.00 1.00 1.10	1 1 1	0.04 0.04 0.04	H-30116 H-30116 H-30116	22325 22325 22325
RD 20	200020 250020 340020 1000020	20 25	– – 3/4 1	46 50 50 50	1.81 1.97 1.97 1.97	48 48 48 48	1.89 1.89 1.89 1.89	34 34 34 34	1.34 1.34 1.34 1.34	1 1 1 1	0.04 0.04 0.04 0.04	H-30120 H-30120 H-30120 H-30120	22330 22330 22330 22330
RD 25	250025 320025 1000025	25 32	– – 1.00	50 50 50	1.97 1.97 1.97	58 58 58	2.28 2.28 2.28	42 42 42	1.65 1.65 1.65	1 1 1	0.04 0.04 0.04	E-30125 E-30125 E-30125	22125 22125 22125
RD 32	250032 300032 320032 400032 100032 1140032	25 30 32 40	– – – – 1 1-1/4	50 50 50 50 50 50	1.97 1.97 1.97 1.97 1.97 1.97	58 58 58 58 58 58	2.28 2.28 2.28 2.28 2.28 2.28	50 50 50 50 50 50	1.97 1.97 1.97 1.97 1.97 1.97	1 1 1 1 1 1	0.04 0.04 0.04 0.04 0.04 0.04	E-30132 E-30132 E-30132 E-30132 E-30132 E-30132	22132 22132 22132 22132 22132 22132

Wrenches are sold separately.

Buy ER Floating Reamer Holders

CLAMPING NUTS & WRENCHES

MINI NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
30008 30011 30016 30020 30025	RD 8 M RD 11 M RD 16 M RD 20 M RD 25 M	12 16 22 28 35	0.47 0.63 0.87 1.10 1.38	10.8 11.3 17 19 20	0.42 0.44 0.67 0.75 0.79	M10 X 0.75 M13 X 0.75 M19 X 1 M24 X 1 M30 X 1

MINI WRENCH

	Part No.	Type
	–	–
	22008 22011 22016 22020 22025	E 8 M E 11 M E 16 M E 20 M E 25 M

HEX NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
30111 30112 30116 30120	UM/RD 11 UM/RD 12 UM/RD 16 UM/RD 20	19 19 28 34	0.75 0.75 1.10 1.34	11.3 12.5 17 19	0.44 0.49 0.67 0.75	M14 X 0.75 M14 X 0.75 M22 X 1.5 M25 X 1.5

HEX WRENCH

	Part No.	Type
	–	–
	22317 22317 22325 22330	GS 17 GS 17 GS 25 GS 30

“E” NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
30126 30127 30125 30132 30140 30150	UX/RD 16 UX/RD 20 UM/RD 25 UM/RD 32 UM/RD 40 UM/RD 50	32 35 42 50 63 78	1.26 1.38 1.65 1.97 2.48 3.07	17.5 18.5 20 22 25 35	0.69 0.73 0.79 0.87 0.98 1.38	M22 X 1.5 M25 X 1.5 M32 X 1.5 M40 X 1.5 M50 X 1.5 M64 X 2

“E” WRENCH

	Part No.	Type
	–	–
	22116 22120 22125 22132 22140 22150	E 16 E 20 E 25 E 32 E 40 E 50

BALLBEARING NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
30126 30127 30125 30132 30140 30150	KM/RD 16 KM/RD 20 KM/RD 25 KM/RD 32 KM/RD 40 KM/RD 50	29 34 42 50 63 78	1.14 1.34 1.65 1.97 2.48 3.07	17.5 18.5 20 22 25 35	0.69 0.73 0.79 0.87 0.98 1.38	M22 X 1.5 M25 X 1.5 M32 X 1.5 M40 X 1.5 M50 X 1.5 M64 X 2

“E” WRENCH

	Part No.	Type
	–	–
	22125 22132 22140 221500 –	E 25 E 32 E 40 E 50 –

HIGH SPEED NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
30716 30720 30725 30732 30740	HS/RD 16 HS/RD 20 HS/RD 25 HS/RD 32 HS/RD 40	30 34 42 50 63	1.18 1.34 1.65 1.97 2.48	17 19 20 22.3 25.3	0.67 0.75 0.79 0.87 1.00	M22 X 1.5 M25 X 1.5 M32 X 1.5 M40 X 1.5 M50 X 1.5

“E” WRENCH

	Part No.	Type
	–	–
	22125 22132 22140 – –	E 25 E 32 E 40 – –

INTERNAL FIT NUTS

Part No.	Type	A		B		C
		(mm.)	(in.)	(mm.)	(in.)
0035211 0035216 0035220 0035225 0035232 0035240	RD 11 A RD 16 A RD 20 A RD 25 A RD 32 A RD 40 A	– – – – – –		8 8 11 12.5 14 20	0.32 0.32 0.43 0.49 0.55 0.79	M18 X 1 M24 X 1 M28 X 1.5 M32 X 1.5 M40 X 1.5 M50 X 1.5

“E” WRENCH

	Part No.	Type
	–	–
	35443 35443 35443 35444 35444 35444	RD 11 A RD 16 A RD 20 A RD 25 A RD 32 A RD 40 A

Buy ER Nuts & Wrenches

ANSI STANDARD RETENTION KNOBS

	Part No.	Taper Size	Thread
FOR MACHINES WITHOUT COOLANT THROUGH SPINDLES	C30VR C40VR C45VR C50VR	CAT30 CAT40 CAT45 CAT50	1/2 – 13 5/8 – 11 3/4 – 10 1” – 8
FOR MACHINES WITH COOLANT THROUGH SPINDLES	C30VRC C40VRC C45VRC C50VRC	CAT30 CAT40 CAT45 CAT50	1/2 – 13 5/8 – 11 3/4 – 10 1” – 8

NOTE: Retention knobs for most
machines available upon request.

Buy ANSI Retention Knobs

LOCKING TIGHTENING FIXTURES FOR CAT (V-Flange)
TOOL HOLDERS

For use in any position
Access tool or retention knob
Bolt down or use in vise

Part No.	Shank Size
C40LTF C50LTF	CAT40 CAT50

Centaur Tightening Fixtures for CAT Tool Holders

Buy CAT Tightenting Fixtures

TIGHTENING FIXTURE FOR ALL TAPERS

Fit CAT (V-Flange), BT & NMTB tapers
Bolt down or use in vise

Part No.	Shank	L	D	K
C30TF C40TF C45TF C50TF	30 40 45 50	3.91 4.65 4.90 6.35	3.00 3.00 3.50 4.00	0.62 0.62 0.75 1.00

Centaur Tightening Fixture

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ER Collets

RD/ER COLLET SYSTEM FEATURES

RD/ER COLLET CONCENTRICITY PER DIN 6499

METHOD OF INSERTION & RELEASE FOR RD/ER COLLETS

INSERTING

RELEASING

RD/ER 8 COLLET SYSTEM

RD/ER 8

RD/ER 8

RD/ER 11

RD/ER 12

RD/ER 11 COLLET SYSTEM

RD/ER 11

RTS 11 RIGID TAPPING COLLETS

RD/ER 12 COLLET SYSTEM

RD/ER 12

RD/ER 16 Collet System

RD/ER 16 INTERNAL & EXTERNAL COOLANT COLLETS

ND COLLETS

RD/ER 16 TAPPING COLLETS

RTS Rigid Tapping Collets with Square Drive

RDT Quick-Change Tapping Collets with Axial Compensation

RD/ER 16 COLLETS

RD/ER 16 TAPPING COLLETS

RD/ER 20 COLLET SYSTEM

RD/ER 20 INTERNAL & EXTERNAL COOLANT COLLETS

ND COLLETS

RD/ER 20 TAPPING COLLETS

RTS Rigid Tapping Collets with Square Drive

RDT Quick-Change Tapping Collets with Axial Compensation

RD/ER 20 COLLETS

RD/ER 20 TAPPING COLLETS

RD/ER 25 COLLET SYSTEM

RD/ER 25 INTERNAL & EXTERNAL COOLANT COLLETS

ND COLLETS

RD/ER 25 TAPPING COLLETS

RTS Rigid Tapping Collets with Square Drive

RDT Quick-Change Tapping Collets with Axial Compensation

RD/ER 25 COLLETS

RD/ER 25 TAPPING COLLETS

RD/ER 32 COLLET SYSTEM

RD/ER 32 INTERNAL & EXTERNAL COOLANT COLLETS

ND COLLETS

RD/ER 32 TAPPING COLLETS

RTS Rigid Tapping Collets with Square Drive

RDT Quick-Change Tapping Collets with Axial Compensation

RD/ER 32 COLLETS

RD/ER 32 TAPPING COLLETS

RD/ER 40 COLLET SYSTEM

RD/ER 40 INTERNAL & EXTERNAL COOLANT COLLETS

ND COLLETS

RD/ER 40 TAPPING COLLETS

RTS Rigid Tapping Collets with Square Drive

RDT Quick-Change Tapping Collets with Axial Compensation

RD/ER 40 COLLETS

RD/ER 40 TAPPING COLLETS

RD/ER 40 INTERNAL & EXTERNAL COOLANT COLLETS

RD/ER 50 COLLET SYSTEM

RD/ER 50 COLLETS

RTX COLLETS

FEATURES

RTX COLLETS

RTX COLLET SETS

RTX COLLET NUTS

STRAIGHT-SHANK RD/ER COLLET CHUCKS (with Step)

STRAIGHT-SHANK RD/ER COLLET CHUCKS (Extension Style)

RD/ER MASTER TOOLING SETS

RD/ER WOODEN TOOL TRAYS

RD/ER WOODEN TOOL BOXES

BT RD/ER COLLET CHUCKS

STANDARD LENGTH

EXTENDED LENGTH

CAT (V-Flange) RD/ER COLLET CHUCKS

STANDARD LENGTH

EXTENDED LENGTH

SHORT & RIGID RD/ER CAT V-FLANGE COLLET CHUCKS

STANDARD LENGTH

SHORT AND RIGID BT COLLET CHUCKS

STANDARD LENGTH

NMTB/ISO RD/ER COLLET CHUCKS

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

RTS Rigid Tapping Collets
with Square Drive

RDT Quick-Change
Tapping Collets
with Axial Compensation

STANDARD
LENGTH

EXTENDED
LENGTH

STANDARD
LENGTH

EXTENDED
LENGTH

LOCKING TIGHTENING FIXTURES FOR CAT (V-Flange)
TOOL HOLDERS