Siemens Building Technology GCA166.1U Actuator 326058-758 This OEM actuator repair solution

This OEM actuator repair solution includes high-grade elastomers and friction-reducing bearings necessary to resolve internal bypass and shaft leakage

it's designed for counterclockwise (CCW) rotation with a 1/2 inch bore

you can upgrade from a lower VA rating to a higher one like this 40VA unit

then re-tighten the set screw to lock the specific airflow setting

Siemens Building Technology GCA166.1U Actuator 326058-758 This OEM actuator repair solutionThe Siemens GCA166. 1U is a heavy duty OpenAir spring return actuator engineered for precise modulating control of HVAC dampers in commercial building automation systems. Operating on 24V AC DC, this unit delivers a robust 142 lb in torque (rated up to 160 lb in in specific applications) to manage large damper areas effectively. It utilizes a 0 10VDC control signal for linear positioning and features dual auxiliary switches for end stop monitoring or