Thermal Expansion Chuck With Taper Shank per BT (Inch)
BT Taper Shanks A25 8 / A25 9
BT Thermogrip thermal expansion chuck for holding cylindrical shanks.  Shank tolerance h6 and surface quality Ta < 0.3.

Delivery:
Thermal Expansion Chuck Fitted Completely

Replacement Parts
Adjusting Screw
Description Order Number BT D1 D2 D3 L L1 Description Order Number
BT 40-T 0.125-3.540 A25 88000 40 .125 .591 .787 3.540 .827 M2.538 5505102508
BT 40-T 0.187-3.540 A25 88010 40 .187 .591 .787 3.540 .827 M2.538 5505102508
BT 40-T 0.250-3.540 A25 88020 40 .250 .787 1.063 3.540 1.417 M5/SW2.5 5139110518
BT 40-T 0.312-3.540 A25 88030 40 .312 .787 1.063 3.540 1.417 M6/SW3 5139110620
BT 40-T 0.375-3.540 A25 88040 40 .375 .945 1.260 3.540 1.654 M8/SW4 5139110820
BT 40-T 0.437-3.540 A25 88050 40 .437 .945 1.260 3.540 1.850 M8/SW4 5139110820
BT 40-T 0.500-3.540 A25 88060 40 .500 .945 1.260 3.540 1.850 M8/SW4 5139110820
BT 40-T 0.562-3.540 A25 88070 40 .562 1.063 1.339 3.540 1.850 M8/SW4 5139110820
BT 40-T 0.625-3.540 A25 88080 40 .625 1.063 1.339 3.540 1.968 M12/SW6 5139111220
BT 40-T 0.750-3.540 A25 88090 40 .750 1.299 1.654 3.540 2.047 M16/SW8 5139111620
BT 40-T 0.875-3.540 A25 88100 40 .875 1.299 1.654 3.540 2.047 M16/SW8 5139111620
BT 40-T 1.000-3.940 A25 88110 40 1.000 1.732 2.087 3.940 2.284 M16/SW8 5139111620
BT 40-T 1.250-3.940 A25 88120 40 1.250 1.732 2.087 3.940 2.284 M16/SW8 5139111620
BT 50-T 0.125-3.940 A25 98000 50 .125 .591 .787 3.940 .827 M2.538 5505102508
BT 50-T 0.187-3.940 A25 98010 50 .187 .591 .787 3.940 .827 M2.538 5505102508
BT 50-T 0.250-3.940 A25 98020 50 .250 .787 1.063 3.940 1.417 M5/SW2.5 5139110518
BT 50-T 0.312-3.940 A25 98030 50 .312 .787 1.063 3.940 1.417 M6/SW3 5139110620
BT 50-T 0.375-3.940 A25 98040 50 .375 .945 1.260 3.940 1.654 M8/SW4 5139110820
BT 50-T 0.500-3.940 A25 98060 50 .500 .945 1.260 3.940 1.850 M8/SW4 5139110820
BT 50-T 0.625-3.940 A25 98080 50 .625 1.063 1.339 3.940 1.968 M12/SW6 5139111220
BT 50-T 0.750-3.940 A25 98090 50 .750 1.299 1.654 3.940 2.047 M16/SW8 5139111620
BT 50-T 0.875-3.940 A25 98100 50 .875 1.299 1.654 3.940 2.047 M16/SW8 5139111620
BT 50-T 1.000-4.330 A25 98110 50 1.000 1.732 2.087 4.330 2.284 M16/SW8 5139111620
BT 50-T 1.250-4.330 A25 98100 50 1.250 1.732 2.087 4.330 2.284 M16/SW8 5139111620