Honeywell 27518 Ball Joint

The Honeywell 27518 is a heavy-duty Crankarm Swivel Ball Joint engineered for precise mechanical linkages in commercial HVAC systems. Designed with 1/4-28 UNF male threads, this component provides a secure, low-friction interface for 5/16-inch diameter push rods. It is commonly utilized in damper actuator accessories and flame safety products to ensure smooth articulation without binding. As a ruggedized linkage ball joint, it facilitates the reliable transfer of motion between actuators and damper crankarms, maintaining system calibration under continuous operation. This part is the direct OEM replacement for legacy models 21-807 and N800-0804, allowing for seamless field retrofits without the need for linkage modification. Its zinc-plated steel construction is built to withstand the torque requirements of industrial HVAC control systems, ensuring long-term structural integrity in demanding environments.

Key Benefits

• Broad Compatibility: Serves as a 1:1 drop-in replacement for obsolete 21-807 and N800-0804 swivel joints.
• Precision Threading: Features a standard 1/4" threads (1/4-28 UNF) for high-vibration resistance in actuator linkages.
• Reduced Mechanical Wear: The swivel design compensates for slight misalignments, preventing lateral stress on 5/16" push rods.
• Industrial Grade Construction: Manufactured for high-cycle applications in damper and actuator assemblies.

Common Questions

What is the thread pitch for the Honeywell 27518?
This ball joint utilizes a 1/4-28 UNF fine thread, which is the standard for Honeywell and Barber-Colman linkage kits.

Can this be used with smaller diameter push rods?
While optimized as a 5/16 inch ball joint, ensure the rod diameter matches exactly to prevent slippage or mechanical failure under load.

Is this compatible with Schneider Electric or Barber-Colman systems?
Yes, the 27518 is the verified replacement for the N800-0804, making it a staple for technicians servicing various damper control brands.

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.