ER Collets | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Grip Range Grip Range

	Size Size

	Collet Type Collet Type


ER-32	ER-16

ER-25	ER-20

ER-11

	For Holding For Holding

	Overall Length Overall Length

	For Collet Type For Collet Type

	Material Material

Steel

Plastic

	Maximum Body Diameter Maximum Body Diameter

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Approximate Diameter Compression Approximate Diameter Compression

1/64"

1/32"

	Specifications Met Specifications Met

ISO

DIN

JIS

	Shank Type Shank Type

	Mounting Location Mounting Location

Bench Top

Machine

Wall

	For Number of Collets For Number of Collets

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Projection Projection

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Component Component

R8 Body

Collet Holder

	Overall Height Overall Height

	Overall Width Overall Width

9 1/8"

12"

17 3/8"

	Mounting Slot Length Mounting Slot Length

1 1/16"

3 3/8"

	For Maximum Collet Size For Maximum Collet Size

191 Products

Collets

ER-32 Collets

Install into an ER-32 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

ER-16 Collets

Install into an ER-16 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

ER-25 Collets

Use these collets in milling machines that have an ER-25 collet chuck. With a round face and adjustable body, they compress to grip round-shank drill bits, end mills, reamers, and taps.