Torque limiter is a protective device that limits torque transmitted in a drive system by slipping when torque demand exceeds a preset value as a result of shock load, over loads, or machine jams. It automatically re-engages when overload torque has passed, no resetting is required. The torque limiter prevents machine damage and eliminates costly downtime. The torque limiter utilizes spring loaded friction surface for its operations; slip torque is preset by adjustment of the spring force. The torque limiter can be used with sprocket, gear, sheave or flange plate as a centre member that is clamped between two friction facings.