NAB air brake is a ordinary and popular used pilot friction brake, it is not only can be applied for stopping, but also can be worked for tension control. It depends on usage requirement.

Except this NAB air brake, there are many other kinds of air disc brake, such as CBM pneumatic tooth brake, DBH air caliper disc brake, HABB spring applied air release brake and etc. Why only this NAB air brake can be used as tension controller?

This NAB air friction brake is through friction pads connecting for brake, so when air pressure is less, it can be slippage for tension control. It is widely applied in unwinding machine with safety chuck, air shaft, magnetic powder brake and etc.