Also known as freewheels, sprag, overrunning, backstop or one-way clutches, cam clutches lock the inner and outer races to transmit torque in one direction of rotation while overrunning in the opposite direction of rotation. Cam clutches are versatile and available for a variety of applications - from small business machines to giant steel slitters. DC motors offers greater versatility for differing speeds and variable speed control requirements. Magnetic fields produced by high-strength permanent magnets require no electrical current from the motor’s power supply, improving the motor’s energy efficiency and internal heating. This current draw enhances the life of batteries used as power supplies in mobile and remote electric motor dc applications.

• Morse  
• Falk Marine and Stearns