... tension control, emergency control and position control etc.DBK Butterfly pneumatic brake is widely used in below machinery industries: 1. Packing ... lathe, special machine etc. 4. Handling machinery: crane, feeder, conveyor, winch(windlass, hoisting machine)5. Sack-making machine: cartoner, book case ... , paper-making machinery, resin processing machinery etc. air applied pneumatic caliper brakes