The PowerMaster 38-00378 Limit Shaft Assembly is a precision-engineered replacement component designed for PowerMaster MG, H, J, and T series commercial and industrial door operators. This limit shaft is a critical mechanical element that controls and defines the operator’s open and close travel limits, ensuring accurate, repeatable, and safe door operation.
Manufactured from high-strength, wear-resistant materials, the limit shaft assembly is built to withstand continuous-duty cycles and demanding commercial environments. It ensures smooth movement of the limit nuts, precise stopping points, and long-term reliability. Ideal for maintenance, repair, or operator refurbishment, this genuine PowerMaster part guarantees proper fit and consistent performance.
