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W.C. Branham's spring applied caliper disc brakes function opposite of traditional brakes. Normal brake operation requires active pressure to brake and pressure removed to release. PFS Series requires active minimum pneumatic pressure of 85 psi to release. At a loss of pressure, energy stored in the Belleville spring stack(s) take over to stop or hold the mass.

Ideal for emergency stopping or holding of industrial machinery.

PFS47 Features:

• Cast aluminum construction • Hardcoated housings • 4.0 in. sq. total friction pad area • Unlimited disc diameter • Replaceable friction pads • Belleville disc spring stack • Non-asbestos friction material • Buna-N seals • 465 lb. Tangential Force.

Founded in 1981, W.C. Branham Inc. is a maker of quality fluid power and power transmission products. Product lines include: Pneumatic Linear Actuators such as; MAGTEC® Magnetically Coupled Rodless Cylinders, pneU-SA® Cable Rodless Cylinders, Rodless Cable Cylinders up to 5 inch bores that are interchangeable with TOM Brand and aftermarket Cable Cylinder Repair Kits for Industry. Caliper Disc Brakes for a wide range of industrial and off-road vehicular applications with hydraulic, pneumatic, mechanical, dual function hydraulic/mechanical, spring applied fail safe pneumatic and hydraulic service. Brake discs in 4 different diameters with a wide selection of hub and disc assemblies. ADD-A-SHAFT® and INSERT-A-SHAFT® brands of Right Angle helical Gear Drives (Gear Boxes). Industrial interchangeable Spiral Bevel Gear Drives as well as DoorTec® overhead pneumatic door opening systems for car washes, car care retail centers, automobile dealerships, fire stations and industrial warehouse distribution centers.