the internal bimetal disc has likely failed and requires immediate replacement

and MX4X series

the assembly includes both the catch and the keeper for a comprehensive field repair

Key Benefits for Professionals

Belimo K-GM20 Clamp the internal bimetal disc hasFor HVAC technicians and mechanical contractors, the Belimo K GM20 serves as a robust actuator clamp assembly designed specifically for GM series actuators. Built for high torque applications, this replacement damper clamp provides a secure, non slip connection to 3 4 inch round shafts or 1 2 inch to 1. 05 inch square shafts. The heavy duty construction ensures precision torque transfer in high pressure air handling units where damper linkage