The Positorq^® Absorber Brakes and Clutches use the same basic design of a multiple disc stack furnished with a continuous supply of cooling and lubricating fluid as do the other Force Control products. A major difference between the Positorq^® and the Posistop brake is that the Positorq^® is designed as a constant slip device and is normally force lubed for smooth torque control and energy absorption.

Tension brakes and dynamometers are essentially energy absorbers. Rotary motion is transformed through the brake to heat. Therefore, a critical function of the brake is to be able to dissipate this heat during slip. In the Positorq^®, fluid is pumped through the shaft to furnish a continuous supply of fluid to the friction surfaces. The fluid, both lubricates the surfaces at the point of contact and removes the heat. The heated fluid is then circulated through a cooling unit (either oil to water or oil to air) dissipating the heat and returned to the Positorq^®.

Since the effective radius, number of discs and friction factor remains constant, the torque available is directly equivalent to the (air or hydraulic) actuation pressure furnished to the actuating piston.
Since the effective radius, number of discs and friction factor remains constant, the torque available is directly equivalent to the (air or hydraulic) actuation pressure furnished to the actuating piston.