Martin 50TTA30-50 torque limiter sprocket for #50 roller chain (5/8" pitch), 30 teeth, 1/2" finished bore with keyway and setscrews. Built-in overload clutch mechanism protects drive components from shock loads and jams by disengaging at preset torque limits. Steel construction with hardened teeth for extended wear life in demanding power transmission applications.

Starting shock from electric motors is a major cause of maintenance of moving parts. Torque-Limiter clutches provide a cushion by slipping until the torque drops to a pre-set level. They can be set to reduce shock loads on motors and driven equipment during reversing or inching. They provide mechanical protection against breakage due to sudden overload — by slipping when the pre-set torque limit is reached. Martin can provide many tooth counts that are not listed by quickly altering stock sprockets.