Johnson Controls DMPR-KC050 Crankarm

The Johnson Controls DMPR-KC050 Crankarm is a heavy-duty linkage component engineered for demanding HVAC damper applications. Designed to fit a 7/16" diameter shaft, this crankarm provides the mechanical leverage required to translate actuator rotation into precise damper blade movement. The integrated adjustable radius, ranging from 1 inch to 2 3/4 inches, allows technicians to fine-tune the stroke and torque delivery, ensuring optimal seal compression and airflow control in high-performance air handling units. Built for long-term reliability in commercial building automation systems, the DMPR-KC050 features a robust construction that resists mechanical fatigue. Whether you are performing a field retrofit or a new installation, this damper linkage accessory ensures a secure, slip-free connection to the actuator drive shaft. Its versatile design makes it a standard choice for contractors looking to maintain or repair Johnson Controls damper assemblies with factory-spec precision.

• Universal 7/16" Bore: Specifically machined for a tight tolerance fit on standard 7/16" damper and actuator shafts.
• Adjustable Stroke Radius: Variable 1" to 2-3/4" radius allows for custom mechanical advantage and damper travel calibration.
• Rigid Construction: Engineered to withstand the repeated cycling of high-torque industrial actuators without deformation.
• Precise Linkage Alignment: Facilitates smooth motion transfer, reducing wear on damper bushings and actuator motors.

Common Questions:

What is the maximum shaft size for the DMPR-KC050?
This specific model is designed for a 7/16-inch shaft. For 1/2-inch or 3/8-inch shafts, different part numbers in the DMPR series must be utilized to ensure a proper mechanical lock.

How do I adjust the radius on this crankarm?
The adjustment is made by loosening the linkage pin and sliding it along the slotted arm to your required radius between 1" and 2-3/4" before tightening. This allows you to match the throw of the actuator to the required rotation of the damper blades.

Is this compatible with non-Johnson Controls actuators?
Yes, as long as the actuator or damper shaft diameter is 7/16", this hardware can be used as a universal linkage component in various terminal unit or transition applications.

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.