KMC Controls HLO-1004 Bushing/Collar

The KMC Controls HLO-1004 Drive Bushing and Collar is a precision-engineered 10-pack set designed for HVAC actuator maintenance and terminal unit repairs. Purpose-built for 1/2-inch damper shafts, these components ensure a zero-slip physical connection between the rotary actuator and the damper linkage. In VAV terminal units and multi-zone air handling systems, the HLO-1004 bushing serves as the critical interface that prevents shaft scoring while maintaining precise torque transfer. As a direct OEM replacement part, this kit is frequently utilized with the KMC MCP-3631 series and similar pneumatic or electric rotary drives to restore smooth blade modulation. High-use damper assemblies often experience vibration-induced wear on original collars; replacing these with authentic KMC hardware mitigates the risk of catastrophic linkage failure or "hunting" in the control loop. For contractors managing large-scale commercial HVAC damper repair, this pack provides a cost-effective bulk solution for standardizing shaft attachments across the mechanical room.

• Universal 1/2" Compatibility: Specifically sized for standard half-inch damper shafts, ensuring a tight, high-tolerance fit that prevents mechanical backlash.
• Multi-Pack Value: Packaged as a 10-count drive kit, making it ideal for stocking service vans or completing large-scale VAV box retrofits.
• Enhanced Torque Stability: The heavy-duty collar and drive coupling design provides the necessary grip to handle higher-torque applications without slipping on the shaft.
• System Longevity: Helps maintain precise alignment between the rotary actuator and the linkage, reducing premature wear on the actuator's internal geartrain.

Does this kit work with standard pneumatic actuators?
Yes, the KMC Controls HLO-1004 is highly compatible with a wide range of KMC pneumatic and electric rotary drives, including the MCP-3631 series, provided the damper shaft is 1/2" in diameter.

Can these bushings be used on round or square shafts?
This specific model is designed for standard 1/2" round shafts commonly found in HVAC air terminal units and dampers. Verify your shaft profile before installation to ensure a secure lock with the collar.

Is this a single unit or a bulk pack?
The HLO-1004 is sold as a pack of 10, providing professionals with multiple sets of drive bushings and collars for comprehensive site maintenance.

This item is not eligible for free shipping.

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.