Belimo K-LM20 Clamp

The Belimo K-LM20 Clamp is a critical mechanical accessory designed for precision-engineered torque transmission in HVAC damper applications. This 3/4-inch actuator clamp is specifically utilized to upgrade or replace the standard hardware on Belimo LM and LMB series actuators, which typically ship with a 5/8-inch maximum capacity. By integrating the K-LM20 shaft clamp, contractors can securely mount actuators onto damper shafts up to 0.75 inches in diameter, ensuring a slip-free connection and maintaining the 45 in-lb to 90 in-lb torque ratings required for reliable airflow control.

Constructed for high-performance HVAC damper motor mounting, this replacement actuator clamp features a self-centering design that accommodates 3/4-inch round shafts and various square shaft profiles. For the technical professional, utilizing the Belimo K-LM20 ensures proper geometry and alignment, preventing the binding or premature component wear often seen with improper damper shaft hardware. This accessory is essential for retrofit projects where existing damper shafts exceed the standard dimensions of the LMB24-3 or LM24-SR factory-supplied fittings.

• Extended Compatibility: Increases the standard 5/8" capacity of LM series actuators to 3/4" to fit larger damper shafts.
• Precise Torque Delivery: High-grip serrated surface prevents slippage on 3/4" round or square shafts.
• Self-Centering Geometry: Simplifies installation by ensuring the actuator clamp is perfectly aligned with the shaft axis.
• Durable Construction: Engineered for mechanical HVAC accessories, providing long-term structural integrity under high-cycle conditions.

• Will this fit NM or AM series actuators? No, the K-LM20 is specifically sized for LM and LMB series actuators; NM/AM series require larger K-AM25 or K-NM20 equivalents.
• Can this be used on square shafts? Yes, the 3/4-inch clamp is compatible with both round and square damper shafts within the specified diameter range.
• Is any special tooling required? Standard 10mm or 8mm sockets/wrenches (depending on the specific nut version) are sufficient for securing the Belimo accessory clamp.

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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.