TB Woods 5J-1/2 Coupler Flange

The TB Woods 5J-1/2 Coupler Flange is a critical component for maintaining drive equity in high-performance HVACR systems. Engineered from high-strength sintered carbon steel, this size 5 Type J flange is designed specifically for close-coupled applications where axial space is limited but reliability cannot be compromised. Optimized for the Sure-Flex Plus series, it features a fixed 1/2" bore with a precision-machined 1/8" x 1/16" keyseat to ensure positive shaft engagement and eliminate slippage under high-torque conditions. This flexible coupling flange is capable of handling rotational speeds up to 7,600 RPM, making it suitable for modern high-speed motors. The 4-way flexing action integrated into the Sure-Flex system effectively absorbs paralell and angular misalignment, significantly reducing bearing loads and protecting your equipment from premature wear. For contractors, the bored-to-size (BTS) design allows for immediate installation without the need for additional bushings or machining, reducing downtime in the field.

• Maximum Torque Density: The sintered steel construction supports higher torque ratings compared to standard cast iron alternatives in the same footprint.
• Interchangeable Design: Fully compatible with existing Sure-Flex Plus sleeves (EPDM, Neoprene, or Hytrel), allowing for versatile application in various environments.
• Precision Alignment: Features two set screws—one over the key and one at 90 degrees—for secure positioning on the shaft.
• Environmental Resistance: Finished with a corrosion-resistant coating to withstand the humidity and temperature fluctuations common in industrial HVACR mechanical rooms.

What is the maximum misalignment this flange can handle?
When paired with an EPDM or Neoprene sleeve, the assembly can typically accommodate up to 1 degree of angular misalignment and 0.015 inches of parallel offset, depending on the specific sleeve series used.

Does this flange require regular lubrication?
No. The Sure-Flex Plus design is completely non-lubricated, as the torque is transmitted through the elastomeric sleeve, eliminating the maintenance requirements associated with gear-type couplings.

Is a bushing required for the 5J-1/2 model?
This is a fixed bore flange, meaning it is already machined to 1/2 inch. No additional bushings or adapters are required for shafts of this size.

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.