Belimo ZG-LMSA-1 Shaft Extension

The Belimo ZG-LMSA-1 Shaft Extension is a critical hardware component designed for field technicians requiring a 3/8-inch diameter shaft extension to bridge the gap between actuators and recessed or inaccessible damper shafts. This 4-inch length extension provides a stable, direct-drive connection for LM series actuators and other compatible HVAC damper actuators requiring specific clearance. Built with professional-grade materials, the ZG-LMSA-1 ensures torque is transferred without slip or play, maintaining the integrity of the HVAC control system. When you are dealing with deep wall thickness or insulated ductwork where the standard shaft length falls short, this OEM Belimo accessory allows for a secure mechanical interface without the need for custom fabrication. Use this damper actuator shaft extension to maintain the precise positioning required in commercial air handling applications.

Key Technician Benefits:

• Optimized Clearance: Provides a 4-inch reach, ideal for through-wall or insulated duct installations where standard shafts are too short.
• Precision Fit: Specifically engineered for 3/8" diameter shafts, ensuring a tight tolerance connection that prevents mechanical hysteresis.
• OEM Reliability: Guaranteed compatibility with Belimo LM... actuators, eliminating the risk of mismatched hardware or field-rigged solutions.
• Direct Drive Stability: High-strength construction maintains the actuator torque rating throughout the extended assembly.
• Fast Field Retrofit: Simplifies the installation process for facility managers and contractors during damper motor replacements.

Common Questions & Technical Support:

What is the maximum torque this extension can handle?
The Belimo ZG-LMSA-1 is designed to meet the full torque specifications of the LM series and compatible 3/8" actuators, ensuring no loss in performance over the 4-inch extension length.

Will this work with 1/2-inch shafts?
No, this specific model is sized strictly for 3/8" diameter shafts. Using the wrong diameter can lead to slippage or mechanical failure of the damper assembly.

Is this compatible with non-Belimo actuators?
While designed for Belimo hardware, it can work with any actuator or damper shaft that utilizes a standard 3/8-inch round interface, provided the mounting footprint allows for the added 4-inch depth.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.