Belimo KH-LF Crankarm

For veteran contractors managing on-site damper retrofits, the Belimo KH-LF Crankarm is the essential link for LF series actuator non-direct mounting applications. Engineered for durability, this actuator crank arm is specifically designed to interface with damper shafts up to 1/2" in diameter, ensuring a slip-free connection in demanding HVAC environments. Constructed from heavy-duty galvanized steel, it provides the structural rigidity required to transmit torque from the actuator to the linkage without deflection.

When field conditions prevent direct-coupling, the Belimo KH-LF allows for flexible positioning, effectively converting rotary motion into linear force through damper linkage kits like the ZG-LF112. The zinc-plated finish offers superior corrosion resistance, making it suitable for mechanical rooms and transitional duct environments. This HVAC replacement part is the standard choice for technicians seeking a reliable, high-tolerance fit for Belimo spring return actuators used in standard-sized air handling units and zone control dampers.

• Optimized Compatibility: Precision-fit for Belimo LF actuators and round or hex shafts with a clamping range up to 1/2 inch.
• Rugged Construction: Fabricated from high-grade galvanized steel to prevent stripping and ensure long-term operational stability.
• Application Versatility: Ideal for non-direct mounting scenarios where space constraints or shaft orientation require a crankarm linkage.
• Secure Attachment: Features a high-tensile locking mechanism to maintain shaft alignment under constant cycling.

Which actuators are compatible with the KH-LF?
This crankarm is specifically engineered for the Belimo LF series. For larger AFB or NFB series actuators, a different adapter kit is required.

Does this include the ball joints?
No, the Belimo KH-LF is the crankarm and retaining hardware only; pushrods and KG6 or KG8 ball joints must be sourced separately based on your specific linkage length.

Can this be used on a jackshaft?
Yes, provided the jackshaft diameter does not exceed 1/2". For larger 3/4" or 1" jackshafts, the KH-AFB or KH-10 models are more appropriate.

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.