Honeywell 4074ELR Crank Arm

As a veteran tech, you know that linkage failure in the field is usually due to using parts that can't handle the torque of a 300 lb-in Modutrol IV motor. That is why the Honeywell 4074ELR Heavy Duty Crank Arm is a staple in my truck for any commercial damper actuator service call. This crank arm is specifically engineered for high-torque applications where a standard aluminum arm would shear or slip. It is technically identical to the Honeywell 4074ELR/U, meaning it provides the same universal fit for standard 3/8-inch or 1/2-inch shafts often found on Modutrol motor linkages.

When you are dealing with HVAC damper linkage repair, the 4074ELR provides a secure mechanical connection to ensure precise stroke control and reliable positioning. I’ve seen these used across countless industrial actuator accessories setups because they eliminate the "slop" that leads to hunt-and-peck positioning issues. Whether you are performing a new install or a mid-season replacement, this heavy-duty crank arm allows for broad adjustment ranges to meet specific mechanical advantage requirements on-site.

• Universal Compatibility: Interchanges directly with 4074ELR/U, ensuring seamless replacement for existing Honeywell Modutrol IV setups.
• High Torque Rating: Built to withstand the force of 300 lb-in Mod III and IV motors without bending or mechanical failure.
• Precision Control: Features a rugged clamping mechanism that prevents shaft slippage during high-cycle industrial operations.
• Durable Construction: Designed for demanding environments where chemical exposure or high vibration is a factor for damper assembly.

Is there a technical difference between 4074ELR and 4074ELR/U?
No, they are functionally identical. The "/U" suffix denotes "Universal" packaging, but both use the same industrial-grade specifications and materials.

What motor models is this crank arm compatible with?
This arm is the standard for Honeywell Modutrol IV motors, specifically those requiring heavy-duty linkage such as the M6415, M7215, and M8415 series.

Can this be used for both 3/8-inch and 1/2-inch shafts?
Yes, the 4074ELR is designed to adapt to standard damper actuator shafts, providing the versatile adjustment needed for different linkage lengths.

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.