Thermal Expansion Chuck With Taper Shank per CAT (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:
Taper Shank Fitted Complete.  

 
Replacement Parts
Adjusting Screw
Description Order Number CAT D1 D2 D3 L L1 Description Order Number
CAT 40 T 0.125-3.740 A25 58000 40 .125 .591 .787 3.740 .827 M2.538 5505102508
CAT 40 T 0.187-3.740 A25 58010 40 .187 .591 .787 3.740 .827 M2.538 5505102508
CAT 40 T 0.250-3.740 A25 58020 40 .250 .787 1.063 3.740 1.417 M5/SW2.5 5139110518
CAT 40 T 0.312-3.740 A25 58030 40 .312 .787 1.063 3.740 1.417 M6/SW3 5139110620
CAT 40 T 0.375-3.740 A25 58040 40 .375 .945 1.260 3.740 1.1654 M8/SW4 5139110820
CAT 40 T 0.437-3.740 A25 58050 40 .437 .945 1.260 3.740 1.850 M8/SW4 5139110820
CAT 40 T 0.500-3.740 A25 58060 40 .500 .945 1.260 3.740 1.850 M8/SW4 5139110820
CAT 40 T 0.562-3.740 A25 58070 40 .562 1.063 1.339 3.740 1.850 M12/SW6 5139111220
CAT 40 T 0.625-3.740 A25 58080 40 .625 1.063 1.339 3.740 1.968 M12/SW6 5139111220
CAT 40 T 0.750-3.740 A25 58090 40 .750 1.299 1.654 3.740 2.047 M16/SW8 5139111620
CAT 40 T 0.875-3.740 A25 58100 40 .875 1.299 1.654 3.740 2.047 M16/SW8 5139111620
CAT 40 T 1.000-3.940 A25 58110 40 1.000 1.732 2.087 3.940 2.284 M16/SW8 5139111620
CAT 40 T 1.250-3.940 A25 58120 40 1.250 1.732 2.087 3.940 2.284 M16/SW8 5139111620
CAT 50 T 0.125-3.740 A25 68000 50 .125 .591 .787 3.740 .827 M2.538 5505102508
CAT 50 T 0.187-3.740 A25 68010 50 .187 .591 .787 3.740 .827 M2.538 5505102508
CAT 50 T 0.250-3.740 A25 68020 50 .250 .787 1.063 3.740 1.417 M5/SW2.5 5139110518
CAT 50 T 0.312-3.740 A25 68030 50 .312 .787 1.063 3.740 1.417 M6/SW3 5139110620
CAT 50 T 0.375-3.740 A25 68040 50 .375 .945 1.260 3.740 1.654 M8/SW4 5139110820
CAT 50 T 0.437-3.740 A25 68050 50 .437 .945 1.260 3.740 1.850 M8/SW4 5139110820
CAT 50 T 0.500-3.740 A25 68060 50 .500 .945 1.260 3.740 1.850 M8/SW4 5139110820
CAT 50 T 0.562-3.740 A25 68070 50 .562 1.063 1.339 3.740 1.850 M8/SW4 5139110820
CAT 50 T 0.625-3.740 A25 68080 50 .625 1.063 1.339 3.740 1.968 M12/SW6 5139111220
CAT 50 T 0.750-3.740 A25 68090 50 .750 1.299 1.654 3.740 2.047 M16/SW8 5139111620
CAT 50 T 0.875-3.740 A25 68100 50 .875 1.299 1.654 3.740 2.047 M16/SW8 5139111620
CAT 50 T 1.000-4.130 A25 68110 50 1.000 1.732 2.087 4.130 2.284 M16/SW8 5139111620
CAT 50 T 1.250-4.130 A25 68120 50 1.250 1.732 2.087 4.130 2.284 M16/SW8 5139111620