SA Ratchet Torque Limiters

SA Ratchet Torque Limiters are safety devices commonly used in power take-off (PTO) shafts of tractors to protect against overloading and excessive torque. These limiters help prevent damage to the PTO shaft and connected equipment by disengaging the power transmission when a pre-set torque threshold is reached.

The main purpose of an SA Ratchet Torque Limiter is to provide overload protection in the PTO system. It ensures that the torque transmitted through the PTO shaft does not exceed a certain limit, preventing damage to the machinery or the operator in case of sudden load changes or equipment failure.

SA Ratchet Torque Limiters are typically composed of a series of ratchet teeth, a driven plate, a driving plate, and springs. These components are housed within a compact and durable casing. The ratchet teeth engage the driving and driven plates, allowing torque transmission during normal operation. When the torque exceeds the pre-set limit, the ratchet teeth disengage the plates, disconnecting the power transmission.

The torque limit of an SA Ratchet Torque Limiter can be adjusted to suit the specific requirements of the application. The adjustment is typically achieved by modifying the preloading force applied to the springs within the limiter. This allows for customization based on the torque capacity of the PTO shaft and the equipment it drives.