TB Woods 4J-1/2 Coupler Flange

The TB Woods 4J-1/2 Coupler Flange is a size 4, Type J Sure-Flex Plus flange engineered from high-strength sintered carbon steel for heavy-duty power transmission applications. Designed with a 1/2 inch bore and a precision-cut 1/8" x 1/16" keyseat, this component ensures a secure interference fit and reliable torque transfer in HVACR motor assemblies. These sintered steel couplings are built to withstand high levels of shock, vibration, and parallel misalignment, which are critical factors in maintaining pump and blower shaft alignment. By utilizing a 4-way flexing design, the 4J sleeve coupling flange minimizes bearing stress and prevents premature drive failure. Whether you are performing a TB Woods 4J replacement or a new system install, this Type J flange provides the torsional stiffness and durability required for industrial-grade performance without the need for lubrication.

Key Benefits:

• Enhanced Torque Capacity: Sintered carbon steel construction provides superior strength compared to standard cast iron alternatives.
• High Misalignment Tolerance: Accommodates angular, parallel, and axial movement to protect connected equipment.
• Direct Compatibility: Fits standard 1/2 inch shafts with a pre-machined keyway for efficient installation on HVAC motor shafts.
• Maintenance-Free Operation: The Sure-Flex Plus design eliminates the need for periodic lubrication or adjustment.

Common Questions:

What is the maximum RPM for a TB Woods size 4 J flange?
The size 4 Type J flange is typically rated for speeds up to 7,600 RPM, depending on the specific insert and application requirements.

Can this flange be used with different sleeve materials?
Yes, it is compatible with EPDM, Neoprene, and Hytrel sleeves, allowing for customization based on chemical exposure and temperature ranges.

How do I ensure proper spacing between flanges during installation?
You must use a "G" dimension setting specified by the manufacturer to ensure the sleeve is fully seated without being over-compressed, preventing axial load on the motor bearings.

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.