Hydraulic power will make the piston a huge force, so the hydraulic drive multi-disc clutch size is very small, but can produce a lot of torque. Steel / sintered material friction material combination of vice because it is oil-cooled, so basically no wear. Friction plate can be automatically compensated by the piston, so there is no need to adjust. The piston is sealed with metal, leaving a limited butt gap, allowing a small amount of oil to seep, and the amount of seepage depends on the size of the clutch.

     Pneumatic clutch is connected by air pressure, by the return spring to release. Specifically, the air is compressed when the solenoid valve is turned on. Through the air guide faucet into the cylinder chamber, the piston axial movement, to promote the friction plate, the middle plate and the pulley plane compression for the combination, such as the pressure gradually increased, the working machine soft start, to smooth operation, when the electromagnetic When the valve is closed, the air pressure disappears and the friction plate is quickly separated by the spring to achieve complete separation.