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

Replacement Parts
Adjusting Screw
Description Order Number CAT D1 D2 D3 L L1 Description Order Number
CAT 40 T 0.125-6.300 A25 58200 40 .125 .591 .787 6.300 .827 M2.538 5505102508
CAT 40 T 0.187-6.300 A25 58210 40 .187 .591 .787 6.300 .827 M2.538 5505102508
CAT 40 T 0.250-6.300 A25 58220 40 .250 .787 1.063 6.300 1.417 M5/SW2.5 5139110518
CAT 40 T 0.312-6.300 A25 58230 40 .312 .787 1.063 6.300 1.417 M6/SW3 5139110620
CAT 40 T 0.375-6.300 A25 58240 40 .375 .945 1.260 6.300 1.654 M8/SW4 5139110820
CAT 40 T 0.437-6.300 A25 58250 40 .437 .945 1.260 6.300 1.850 M8/SW4 5139110820
CAT 40 T 0.500-6.300 A25 58260 40 .500 .945 1.260 6.300 1.850 M8/SW4 5139110820
CAT 40 T 0.562-6.300 A25 58270 40 .562 1.063 1.339 6.300 1.850 M8/SW4 5139111220
CAT 40 T 0.625-6.300 A25 58280 40 .625 1.063 1.339 6.300 1.968 M12/SW6 5139111620
CAT 40 T 0.750-6.300 A25 58290 40 .750 1.299 1.654 6.300 2.047 M16/SW8 5139111620
CAT 40 T 0.875-6.300 A25 58300 40 .875 1.299 1.654 6.300 2.047 M16/SW8 5139111620
CAT 40 T 1.000-6.300 A25 58310 40 1.000 1.732 2.087 6.300 2.284 M16/SW8 5139111620
CAT 40 T 1.250-6.300 A25 58320 40 1.250 1.732 2.087 6.300 2.284 M16/SW8 5139111620
CAT 50 T 0.125-6.300 A25 68200 50 .125 .591 .787 6.300 .827 M2.538 5505102508
CAT 50 T 0.187-6.300 A25 68210 50 .187 .591 .787 6.300 .827 M2.538 5505102508
CAT 50 T 0.250-6.300 A25 68220 50 .250 .787 1.063 6.300 1.417 M5/SW2.5 5139110518
CAT 50 T 0.312-6.300 A25 68230 50 .312 .787 1.063 6.300 1.417 M6/SW3 5139110620
CAT 50 T 0.375-6.300 A25 68240 50 .375 .945 1.260 6.300 1.654 M8/SW4 5139110820
CAT 50 T 0.437-6.300 A25 68250 50 .437 .945 1.260 6.300 1.850 M8/SW4 5139110820
CAT 50 T 0.500-6.300 A25 68260 50 .500 .945 1.260 6.300 1.850 M8/SW4 5139110820
CAT 50 T 0.562-6.300 A25 68270 50 .562 1.063 1.339 6.300 1.850 M8/SW4 5139110820
CAT 50 T 0.625-6.300 A25 68280 50 .625 1.063 1.339 6.300 1.968 M12/SW6 5139111220
CAT 50 T 0.750-6.300 A25 68290 50 .750 1.299 1.654 6.300 2.047 M16/SW8 5139111620
CAT 50 T 0.875-6.300 A25 68300 50 .875 1.299 1.654 6.300 2.047 M16/SW8 5139111620
CAT 50 T 1.000-6.300 A25 68310 50 1.000 1.732 2.087 6.300 2.284 M16/SW8 5139111620
CAT 50 T 1.250-6.300 A25 68320 50 1.250 1.732 2.087 6.300 2.284 M16/SW8 5139111620