BDC pneumatic multiple friction disc clutch is driven by air pressure. It is composed of some groups of friction discs, which is made with steel and copper based disc. So it can transmit high clutch torque for power delivery.
 

BDC pneumatic multiple friction disc clutch has some models, like BDC-40, BDC-60, BDC-100, BDC-200, BDC-300. When air pressure is 0.6Mpa, then their max clutch torque can be reached 400N.m, 600N.m, 1000N.m, 2000N.m, 3000N.m or more.