Belimo AH-25 Crankarm

The Belimo AH-25 Crankarm is a heavy-duty damper actuator accessory engineered specifically for one-sided standard shaft clamps. This galvanized steel actuator arm is a critical component for field-mounting non-spring return actuators, providing a reliable mechanical linkage for ventilation and air-conditioning systems. Designed for professional HVACR contractors, the AH-25 features a precise 8.2 mm slot width and is fully compatible with the Belimo NMB(X) and AMB(X) series, as well as LMQ..A, NKQ..A, and NM..A models. The zinc-plated construction ensures long-term structural integrity in demanding mechanical environments. This crankarm adapter allows for seamless actuator linkage assembly, facilitating accurate torque transmission and damper blade positioning. When replacing or upgrading HVAC damper linkages, the AH-25 provides the exact fitment required for one-sided spindle clamps, ensuring your damper control system operates within specified parameters without mechanical slip or alignment issues.

• Precise Compatibility: Engineered for seamless integration with Belimo NMB(X), AMB(X), and NKQB(X) actuator series.
• Durable Construction: Fabricated from galvanized steel to resist corrosion and maintain linkage alignment.
• Standardized Fitment: Designed for standard shaft clamps (one-sided) with a 15mm-87mm dimensional profile for versatile mounting.
• Optimized Torque Transfer: Features an 8.2 mm slot to ensure secure attachment and consistent performance in HVAC air-flow control.

Common Questions:

Is the AH-25 compatible with spring return actuators?
The AH-25 is primarily designed for non-spring return actuators like the NM and AM series. For spring-return models, verify the specific torque requirements and shaft clamp dimensions of your unit before installation.

What is the primary material of the AH-25?
This crankarm is manufactured from high-grade galvanized steel, providing the necessary rigidity and environmental resistance for stationary HVAC systems.

Can this be used for dual-sided shaft clamping?
No, the AH-25 is specifically engineered for one-sided standard shaft clamps. Utilizing it in a dual-sided configuration may compromise the mechanical integrity of the actuator linkage.

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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.