GMT ER Collet Chucks

Product Overview
The high accuracy and wide gripping range of ER collet chucks make them the most versatile and the most popular toolholders in the industry. ER "spring" collets with 8 degree tapers are capable of compressing 0.040", more than any other collet.

Features
  • Choice of Electroless Nickel Plating or Black Oxide Finish
  • Precision ground collet nut threads
  • Concentricity < 0.0001" at the collet taper
  • Tapers and flange hardened to 55 HRC
  • All CAT40 chucks balanced to G2.5 @ 20,000RPM

Standard Nuts
  • CAT40-ER16-250
  • All ER25 and ER32 Chucks
  • Thicker wall, higher torque capacity
  • Use Standard (STD) wrenches

Slim (Castle) Nuts
  • CAT40-ER16-250S
  • CAT40-ER16-400S
  • R8-ER16S
  • Added clearance
  • Use ER16-SLIM wrenches

Package Deals
  • Significant savings!
  • Pull studs & wrench included

CAT40 Taper - Electroless Nickel
CAT40-ER16-250 ER16 Chuck 2.5in (G2.5 @ 20K) PHOTO $99.99 IN STOCK
 
CAT40-ER16-250S ER16 Chuck 2.5in - SLIM nut (G2.5) PHOTO $99.99 IN STOCK
 
CAT40-ER16-400 ER16 Chuck 4.0in (G2.5 @ 20K) PHOTO $99.99 IN STOCK
 
CAT40-ER16-400S ER16 Chuck 4.0in - SLIM nut (G2.5) PHOTO $89.99 IN STOCK
 
CAT40-ER25-250 ER25 Chuck 2.5in (G2.5 @ 20K) PHOTO $99.99 IN STOCK
 
CAT40-ER25-400 ER25 Chuck 4.0in (G2.5 @ 20K) PHOTO $89.99 IN STOCK
 
CAT40-ER32-250 ER32 Chuck 2.5in (G2.5 @ 20K) PHOTO $99.99 IN STOCK
 
CAT40-ER32-400 ER32 Chuck 4.0in (G2.5 @ 20K) PHOTO $99.99 IN STOCK
 

CAT40 Taper - Black Oxide
CAT40-ER16-400B ER16 Chuck, Black Oxide, G2.5@20K PHOTO $99.99 IN STOCK
 
CAT40-ER25-250B ER25 Chuck, Black Oxide, G2.5@20K PHOTO $99.99 IN STOCK
 
CAT40-ER32-300B ER32 Chuck, Black Oxide, G2.5@20K PHOTO $79.99 IN STOCK
 
CAT40-ER32-400B ER32 Chuck, Black Oxide, G2.5@20K PHOTO $79.99 IN STOCK
 

R8 Taper - Electroless Nickel
R8-ER16 ER16 Collet Chuck - STD hex nut PHOTO $79.99 IN STOCK
 
R8-ER16S ER16 Collet Chuck - SLIM NUT PHOTO $79.99 IN STOCK
 
R8-ER25 ER25 Collet Chuck PHOTO $89.99 IN STOCK
 
R8-ER32 ER32 Collet Chuck PHOTO $89.99 IN STOCK
 

BT40 Taper - Black Oxide
BT40-ER25-300B ER25 Collet Chuck PHOTO $89.99 IN STOCK
 
BT40-ER32-238B ER32 Collet Chuck PHOTO $89.99 IN STOCK
 

Collet Nut Wrenches
ER16-SLIM SLIM ER16 Collet Wrench PHOTO $9.99 IN STOCK
 
ER16-STD Standard ER16 Collet Wrench PHOTO $9.99 IN STOCK
 
ER25-STD Standard ER25 Collet Wrench PHOTO $10.99 IN STOCK
 
ER32-STD Standard ER32 Collet Wrench PHOTO $11.99 IN STOCK
 

Pull Stud Information