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LLH Holdbacks

Clutch Engineering offers Formsprag Long Life Holdbacks (LLH) that have the ability to overrun in one direction, allowing rotation, while rotation in the opposite direction is prevented. This functionality is accomplished by a one-piece, quickly detached torque arm fixed to one race. The sprag design is comprised of a full complement of accurately formed sprags filling the annular space. These LLH Holdbacks designed for long life, as the name implies, and they are sealed to protect against airborne contaminants. Formsprag offers two technologies in backstopping designs, Sprag and Ramp & Roller. The ramp & roller design consists of precision machined ramps on the inner race and bearing quality cylindrical rollers filling the annular space.

Torque range: 5,000 to 700,000 lb-ft (6,800 to 952,000 Nm)
Typical applications: Conveyors, bucket elevators, pumps, ski lifts, elevators