Pneumatic Spring Applied Brakes

W.C. Branham Inc. has a wide breadth of pneumatic spring applied brakes. 

They include the PFS47, PFS200, PFS200UL, and PFS400 series' as well as the recently introduced PFS520 and PFS522 series'.

The PFS400 has 2 times the brake holding torque than that of the PFS200 series and 4 times than that of the PFS47. The PFS520 has 3.3 times and the PFS522 has 6.6 times the brake holding torque of the PFS400.

The PFS200SUL allows for use with an unlimited brake disc diameter range. Same torque specifications as PFS200. Available as fix mounted version too.

Active minimum air pressure of 85 psi releases the brake piston (pulls the brake piston away) from the brake disc rotor and stores that energy in a Belleville disc spring stack (100 psi release rated for PFS400).

Then, at loss of that air pressure the energy stored in the disc spring stack is emitted driving the brake piston and engaging the disc rotor for positive stopping.

Engineering note: Spring applied brakes are intended for use as an emergency stop or static holding device. It is not suggested to use in continuous slip applications as torque capacity is directly related to friction pad wear.