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CAT40 ER20 4.0 MINI NUT COLLET CHUCK TOOL HOLDER $144.30
CAT40 ER20 4.0 MINI NUT COLLET CHUCK TOOL HOLDER
Click to enlarge


CAT40 ER20 4.0 MINI NUT COLLET CHUCK TOOL HOLDER
Click to enlarge
CAT40 ER20 4.0 MINI NUT COLLET CHUCK TOOL HOLDER
Click to enlarge
CAT40 ER20 4.0 MINI NUT COLLET CHUCK TOOL HOLDER
Click to enlarge
Item No. CAT40-ER20-4.0M
Price: $144.30
Shipping: In Stock - Ships Same Day *
Quantity: 

* Same Day Shipping is only available on orders placed Monday - Friday before 4 P.M. Central Time.

Available Downloads for CAT40-ER20-4.0M
PDF file  DWG file  DXF file  STP file 
Product Info

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  • Collet Chuck accepts all ER20 collets
  • Works on all CAT 40 machines
  • Threaded for stop screw type 1 (not included)
  • All critical surfaces precision ground
  • Made from alloy steel hardened to 54 - 56rc
  • Balanced to G2.5 at 20,000 rpms
  • Gage length is 4.0 Inches
  • Concentricity is less than .0002 at collet face
  • Collet nut is included
  • Mini Collet Nut is slimmer than standard collet nut
  • ER20 Mini Nut has an id thread of 24mm X 1.0 pitch. Outside diameter is 1.102 inches (28mm)
  • Must use ER20M collet wrench
  • Coolant thru capability
  • Rear thread for pull stud is 5/8—11
  • MariTool Part# is CAT40-ER20-4.0M

Product Specifications
Balance Spec:  G2.5 @ 20,000 rpms
Collet Grip Range:  .024-.5625 inches
Collet Nut:  ER20M
Collet Size:  ER 20
Concentricity:  < .0001 at Collet Face
Coolant Thru:  Yes
Finish:  Black Oxide
Gage Length:  4.0
Material:  Hardened Alloy Steel
Rear Thread:  5/8-11
Taper:  CAT40