BTC Pneumatic tooth clutch through driving tooth plate and driven tooth plate engagement, small size while transmit torque is several times than other mode air clutch. It can transmit 1:1 torque and no residual. Engagement and release in moment, action flexible and fast. Engagement structure and easy installation. BTC mode air clutch characters: Standstill or low speed engagement, high-speed rotating. It is widely used in tire forming machine, convey machine, automatic equipment, food machinery, medical machinery, printing machinery,packaging machinery, corrugated machinery, electrical machinery, lead wire equipment, textile machinery, rubber machinery, tire machinery, production line, paper making machinery, construction machinery, plywood machinery, punching machine, die-cutting machinery, crusher and etc. It also applied in robot, mechanical arm and other high technology industry.