Thermal Expansion Chuck With Taper Shank per CAT Extra Long (Inch)
CAT Taper Shanks A255 / A256
CAT Thermogrip thermal expansion chuck for holding cylindrical shanks.  Shank tolerance h6 and surface quality Ra < 0.3. 

Delivery:
Thermal Expansion Chuck Fitted Complete.  

Replacement Parts
Adjusting Screw
Description Order Number CAT D1 D2 D3 L L1 Description Order Number
CAT 50 T 0.250-7.870 A25 68420 50 .250 .787 1.063 7.870 1.417 M5/SW2.5 5139110518
CAT 50 T 0.312-7.870 A25 68430 50 .312 .787 1.063 7.870 1.417 M6/SW3 5139110620
CAT 50 T 0.375-7.870 A25 68440 50 .375 .945 1.260 7.870 1.654 M8/SW4 5139110820
CAT 50 T 0.437-7.870 A25 68450 50 .437 .945 1.260 7.870 1.850 M8/SW4 5139110820
CAT 50 T 0.500-7.870 A25 68460 50 .500 .945 1.260 7.870 1.850 M8/SW4 5139110820
CAT 50 T 0.562-7.870 A25 68470 50 .562 1.063 1.339 7.870 1.850 M8/SW4 5139110820
CAT 50 T 0.625-7.870 A25 68480 50 .625 1.063 1.339 7.870 1.968 M12/SW6 5139111220
CAT 50 T 0.750-7.870 A25 68490 50 .750 1.299 1.654 7.870 2.047 M16/SW8 5139111620
CAT 50 T 0.875-7.870 A25 68500 50 .875 1.299 1.654 7.870 2.047 M16/SW8 5139111620
CAT 50 T 1.000-7.870 A25 68510 50 1.000 1.732 2.087 7.870 2.284 M16/SW8 5139111620
CAT 50 T 1.250-7.870 A25 68520 50 1.250 1.732 2.087 7.870 2.284 M16/SW8 5139111620