Straight Shank ER Collet Extensions

Precision straight shank ER collet extension holders for Swiss-type lathes and CNC lathes. Double-ended and single-ended threaded designs are available with A-type, M-type or UM-type nuts and can be produced to the required body diameter, length and connection.

Double-Ended ER Collet Extension Holders

Dimension reference

Two ER collet clamping ends are integrated into one straight shank holder, providing two tool-clamping positions in a compact body for Swiss-type and CNC lathe applications.

A-Type Double-Ended ER Collet Extension Holder

A Nut

A-type double-ended straight shank ER collet extension holder dimensional drawing

Swipe horizontally to view the complete dimensional drawing.

Order No.	Nut	ER	D	L
SL16-ER11AD-50	A	11	16	50
SL16-ER11AD-70	A	11	16	70
SL16-ER11AD-100	A	11	16	100
SL19.05-ER11AD-50	A	11	19.05	50
SL19.05-ER11AD-70	A	11	19.05	70
SL19.05-ER11AD-100	A	11	19.05	100
SL20-ER11AD-50	A	11	20	50
SL20-ER11AD-60	A	11	20	60
SL20-ER11AD-70	A	11	20	70
SL20-ER11AD-80	A	11	20	80
SL20-ER11AD-100	A	11	20	100
SL19.05-ER16AD-50	A	16	19.05	50
SL19.05-ER16AD-70	A	16	19.05	70
SL19.05-ER16AD-100	A	16	19.05	100
SL20-ER16AD-50	A	16	20	50
SL20-ER16AD-70	A	16	20	70
SL20-ER16AD-100	A	16	20	100
SL22-ER16AD-50	A	16	22	50
SL22-ER16AD-70	A	16	22	70
SL22-ER16AD-80	A	16	22	80
SL22-ER16AD-90	A	16	22	90
SL22-ER16AD-100	A	16	22	100
SL25-ER16AD-50	A	16	25	50
SL25-ER16AD-70	A	16	25	70
SL25-ER16AD-100	A	16	25	100
SL25.4-ER16AD-50	A	16	25.4	50
SL25.4-ER16AD-70	A	16	25.4	70
SL25.4-ER16AD-100	A	16	25.4	100
SL25.4-ER16AD-120	A	16	25.4	120
SL25-ER20AD-60	A	20	25	60
SL25-ER20AD-70	A	20	25	70
SL25-ER20AD-100	A	20	25	100
SL25.4-ER20AD-55	A	20	25.4	55
SL25.4-ER20AD-70	A	20	25.4	70
SL25.4-ER20AD-100	A	20	25.4	100
SL32-ER20AD-80	A	20	32	80

Model example: SL19.05-ER16AD-70 Dimension symbols: Nut / D / L

M-Type Double-Ended ER Collet Extension Holder

M Nut

M-type double-ended straight shank ER collet extension holder dimensional drawing

Swipe horizontally to view the complete dimensional drawing.

Order No.	Nut	ER	D	L
SL16-ER11MD-50	M	11	16	50
SL16-ER11MD-70	M	11	16	70
SL16-ER11MD-100	M	11	16	100
SL19.05-ER11MD-50	M	11	19.05	50
SL19.05-ER11MD-70	M	11	19.05	70
SL19.05-ER11MD-100	M	11	19.05	100
SL20-ER11MD-50	M	11	20	50
SL20-ER11MD-60	M	11	20	60
SL20-ER11MD-70	M	11	20	70
SL20-ER11MD-80	M	11	20	80
SL20-ER11MD-100	M	11	20	100
SL19.05-ER16MD-50	M	16	19.05	50
SL19.05-ER16MD-70	M	16	19.05	70
SL19.05-ER16MD-100	M	16	19.05	100
SL20-ER16MD-50	M	16	20	50
SL20-ER16MD-70	M	16	20	70
SL20-ER16MD-100	M	16	20	100
SL22-ER16MD-50	M	16	22	50
SL22-ER16MD-70	M	16	22	70
SL22-ER16MD-80	M	16	22	80
SL22-ER16MD-90	M	16	22	90
SL22-ER16MD-100	M	16	22	100
SL25-ER16MD-50	M	16	25	50
SL25-ER16MD-70	M	16	25	70
SL25-ER16MD-100	M	16	25	100
SL25.4-ER16MD-50	M	16	25.4	50
SL25.4-ER16MD-70	M	16	25.4	70
SL25.4-ER16MD-100	M	16	25.4	100
SL25.4-ER16MD-120	M	16	25.4	120
SL25-ER20MD-60	M	20	25	60
SL25-ER20MD-70	M	20	25	70
SL25-ER20MD-100	M	20	25	100
SL25.4-ER20MD-55	M	20	25.4	55
SL25.4-ER20MD-70	M	20	25.4	70
SL25.4-ER20MD-100	M	20	25.4	100
SL32-ER20MD-80	M	20	32	80

Model example: SL19.05-ER16MD-70 Dimension symbols: Nut / D / L

Double-ended holder selection: Confirm the ER collet series, body diameter D, straight body length L and required nut type. The yellow check mark in each drawing identifies the illustrated nut option.

Single-Ended Threaded ER Collet Extension Holders

Dimension reference

Single-ended ER collet extension holders with a rear internal thread for connection to a compatible holder, adapter or machine-side component.

A-Type Single-Ended ER Collet Extension Holder

A Nut

A-type single-ended straight shank ER collet extension holder dimensional drawing

Swipe horizontally to view the complete dimensional drawing.

Order No.	Nut	ER	D	L	TH
SL16-ER11A-50	A	11	16	50	G1/4
SL16-ER11A-70	A	11	16	70	G1/4
SL16-ER11A-90	A	11	16	90	G1/4
SL16-ER11A-100	A	11	16	100	G1/4
SL19.05-ER11A-50	A	11	19.05	50	G1/4
SL19.05-ER11A-70	A	11	19.05	70	G1/4
SL19.05-ER11A-100	A	11	19.05	100	G1/4
SL20-ER11A-50	A	11	20	50	G1/4
SL20-ER11A-70	A	11	20	70	G1/4
SL20-ER11A-100	A	11	20	100	G1/4
SL25-ER11A-50	A	11	25	50	G1/4
SL25-ER11A-60	A	11	25	60	G1/4
SL25-ER11A-70	A	11	25	70	G1/4
SL16-ER16A-50	A	16	16	50	G1/4
SL16-ER16A-70	A	16	16	70	G1/4
SL16-ER16A-100	A	16	16	100	G1/4
SL19.05-ER16A-50	A	16	19.05	50	G1/4
SL19.05-ER16A-70	A	16	19.05	70	G1/4
SL19.05-ER16A-100	A	16	19.05	100	G1/4
SL20-ER16A-50	A	16	20	50	G1/4
SL20-ER16A-70	A	16	20	70	G1/4
SL20-ER16A-100	A	16	20	100	G1/4
SL22-ER16A-50	A	16	22	50	G1/4
SL22-ER16A-70	A	16	22	70	G1/4
SL22-ER16A-100	A	16	22	100	G1/4
SL25-ER16A-50	A	16	25	50	G1/4
SL25-ER16A-70	A	16	25	70	G1/4
SL25-ER16A-80	A	16	25	80	G1/4
SL25-ER16A-100	A	16	25	100	G1/4
SL25.4-ER16A-50	A	16	25.4	50	G1/4
SL25.4-ER16A-70	A	16	25.4	70	G1/4
SL25.4-ER16A-100	A	16	25.4	100	G1/4
SL20-ER20A-50	A	20	20	50	G1/4 & G3/8
SL20-ER20A-70	A	20	20	70	G1/4 & G3/8
SL20-ER20A-100	A	20	20	100	G1/4 & G3/8
SL22-ER20A-70	A	20	22	70	G1/4 & G3/8
SL22-ER20A-100	A	20	22	100	G1/4 & G3/8
SL25-ER20A-50	A	20	25	50	G1/4 & G3/8
SL25-ER20A-70	A	20	25	70	G1/4 & G3/8
SL25-ER20A-100	A	20	25	100	G1/4 & G3/8
SL25.4-ER20A-50	A	20	25.4	50	G1/4 & G3/8
SL25.4-ER20A-70	A	20	25.4	70	G1/4 & G3/8
SL25.4-ER20A-100	A	20	25.4	100	G1/4 & G3/8
SL32-ER20A-70	A	20	32	70	G1/4 & G3/8
SL32-ER20A-85	A	20	32	85	G1/4 & G3/8
SL32-ER20A-100	A	20	32	100	G1/4 & G3/8
SL40-ER20A-70	A	20	40	70	G1/4 & G3/8

Model example: SL19.05-ER16A-70 Dimension symbols: Nut / D / L / TH

M-Type Single-Ended ER Collet Extension Holder

M Nut

M-type single-ended straight shank ER collet extension holder dimensional drawing

Swipe horizontally to view the complete dimensional drawing.

Order No.	Nut	ER	D	L	TH
SL16-ER11M-50	M	11	16	50	G1/4
SL16-ER11M-70	M	11	16	70	G1/4
SL16-ER11M-90	M	11	16	90	G1/4
SL16-ER11M-100	M	11	16	100	G1/4
SL19.05-ER11M-50	M	11	19.05	50	G1/4
SL19.05-ER11M-70	M	11	19.05	70	G1/4
SL19.05-ER11M-100	M	11	19.05	100	G1/4
SL20-ER11M-50	M	11	20	50	G1/4
SL20-ER11M-70	M	11	20	70	G1/4
SL20-ER11M-100	M	11	20	100	G1/4
SL25-ER11M-50	M	11	25	50	G1/4
SL25-ER11M-60	M	11	25	60	G1/4
SL25-ER11M-70	M	11	25	70	G1/4
SL16-ER16M-50	M	16	16	50	G1/4
SL16-ER16M-70	M	16	16	70	G1/4
SL16-ER16M-100	M	16	16	100	G1/4
SL19.05-ER16M-50	M	16	19.05	50	G1/4
SL19.05-ER16M-70	M	16	19.05	70	G1/4
SL19.05-ER16M-100	M	16	19.05	100	G1/4
SL20-ER16M-50	M	16	20	50	G1/4
SL20-ER16M-70	M	16	20	70	G1/4
SL20-ER16M-100	M	16	20	100	G1/4
SL22-ER16M-50	M	16	22	50	G1/4
SL22-ER16M-70	M	16	22	70	G1/4
SL22-ER16M-100	M	16	22	100	G1/4
SL25-ER16M-50	M	16	25	50	G1/4
SL25-ER16M-70	M	16	25	70	G1/4
SL25-ER16M-80	M	16	25	80	G1/4
SL25-ER16M-100	M	16	25	100	G1/4
SL25.4-ER16M-50	M	16	25.4	50	G1/4
SL25.4-ER16M-70	M	16	25.4	70	G1/4
SL25.4-ER16M-100	M	16	25.4	100	G1/4
SL20-ER20M-50	M	20	20	50	G1/4 & G3/8
SL20-ER20M-70	M	20	20	70	G1/4 & G3/8
SL20-ER20M-100	M	20	20	100	G1/4 & G3/8
SL22-ER20M-70	M	20	22	70	G1/4 & G3/8
SL22-ER20M-100	M	20	22	100	G1/4 & G3/8
SL25-ER20M-50	M	20	25	50	G1/4 & G3/8
SL25-ER20M-70	M	20	25	70	G1/4 & G3/8
SL25-ER20M-100	M	20	25	100	G1/4 & G3/8
SL25.4-ER20M-50	M	20	25.4	50	G1/4 & G3/8
SL25.4-ER20M-70	M	20	25.4	70	G1/4 & G3/8
SL25.4-ER20M-100	M	20	25.4	100	G1/4 & G3/8
SL32-ER20M-70	M	20	32	70	G1/4 & G3/8
SL32-ER20M-85	M	20	32	85	G1/4 & G3/8
SL32-ER20M-100	M	20	32	100	G1/4 & G3/8
SL40-ER20M-70	M	20	40	70	G1/4 & G3/8

Model example: SL19.05-ER16M-70 Dimension symbols: Nut / D / L / TH

UM-Type Single-Ended ER Collet Extension Holder

UM Nut

UM-type single-ended straight shank ER collet extension holder dimensional drawing

Swipe horizontally to view the complete dimensional drawing.

Order No.	Nut	ER	D	L	TH
SL25-ER25UM-50	UM	25	25	50	G1/4 & G3/8
SL25-ER25UM-70	UM	25	25	70	G1/4 & G3/8
SL25-ER25UM-80	UM	25	25	80	G1/4 & G3/8
SL25.4-ER25UM-70	UM	25	25.4	70	G1/4 & G3/8
SL25.4-ER25UM-80	UM	25	25.4	80	G1/4 & G3/8
SL25.4-ER25UM-100	UM	25	25.4	100	G1/4 & G3/8
SL32-ER25UM-70	UM	25	32	70	G1/4 & G3/8
SL40-ER25UM-70	UM	25	40	70	G1/4 & G3/8
SL25-ER32UM-70	UM	32	25	70	G1/4 & G3/8
SL25.4-ER32UM-100	UM	32	25.4	100	G1/4 & G3/8
SL32-ER32UM-70	UM	32	32	70	G1/4 & G3/8
SL32-ER32UM-100	UM	32	32	100	G1/4 & G3/8
SL40-ER32UM-70	UM	32	40	70	G1/4 & G3/8

Model example: SL25-ER25UM-70 Dimension symbols: Nut / ER / D / L / TH

Single-ended holder selection: In addition to the ER collet series, D, L and nut type, confirm the rear internal thread TH. A drawing, sample or dimensions of the mating component are recommended.

Available Configurations & Ordering Information

Each ER collet extension holder is confirmed according to the machine, available installation space, tool size and connection requirements.

Holder Configurations

Double-Ended Straight Shank Single-Ended with Internal Thread A-Type Nut M-Type Nut UM-Type Nut

Information Required for Confirmation

ER Collet Series Body Diameter D Straight Body Length L Nut Type Rear Internal Thread TH Required Quantity Drawing or Existing Sample

D Straight shank body diameter

L Straight body or working length shown in the drawing

Nut Maximum outside diameter of the selected ER nut

TH Rear internal connection thread on threaded versions

Need a Straight Shank ER Collet Extension Holder?

Send us the ER collet series, D, L, nut type, rear thread if required and quantity. Drawings or samples are also welcome for technical confirmation and customized production.

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