Gasoline engines, pumps, generators and other machines operating in rugged environments require long-lasting components to ensure successful performance. Clutches designed with durable materials can prevent breakdowns, which would otherwise lead to expensive maintenance and downtime. One example of a ruggedized clutch — the Carlyle Johnson's EPC multiple disc electric pulley clutch — consists of a standard electromagnetic multiple disc design and utilizes oil shear to enhance service life.

Force Control dynamometers featuring Positorq oil shear load brakes absorb extreme torque at very low speed, down to zero rpm. This allows them to accurately capture data at these critical junctures, when dynos equipped with traditional load brakes cannot.