Tb Woods TB-WE4H138 Tire Coupling Hub WE4 Keyed Steel

Product Description

The TB WOODS TB-WE4H138 is a plain bore tire coupling hub designed for WE4-size Dura-Flex tire coupling assemblies. It mounts directly to a keyed shaft and connects to a matched tire coupling element to transmit torque between two shafts while accommodating angular and parallel misalignment. The hub is machined from steel with a 1-3/8 inch round keyed bore, a 5/16 inch keyway width, and a length through bore of 1-11/16 inches. Rated at 550 inch-pounds of torque and a maximum speed of 7,500 RPM, this hub is sized for demanding power transmission in industrial and commercial mechanical systems. Licensed mechanics and millwrights are the primary installers.

This hub is suited for use in blowers, compressors, fans, generators, pumps, and motors across numerous industrial applications. It performs across a wide temperature range of -40 degrees F to 200 degrees F and carries chemical and oil resistance properties, making it viable in harsh service environments. At 10 hp at 1,160 RPM, 15 hp at 1,750 RPM, and 31 hp at 3,500 RPM, the WE4 hub handles a broad range of drive configurations in both light and heavy-duty mechanical setups.

Key Features

• WE4 coupling size with 1-3/8 inch keyed bore and 1-11/16 inch length through bore
• 550 in-lb rated torque with a torsional stiffness of 5,370 in-lb/rad
• Accommodates 4 degrees of angular misalignment and 0.0625 inch of parallel misalignment
• Maximum operating speed of 7,500 RPM
• No lubrication required; absorbs shock loads
• Same hub used for both standard and spacer element assemblies, simplifying parts inventory
• Set screw located over keyway with 1/4 inch-20 thread size

Compatibility

Designed for use with WE4-size Dura-Flex tire coupling elements. Compatible applications include blowers, compressors, fans, generators, pumps, motors, and numerous other industrial drive systems requiring keyed shaft connections.

Installation Notes

Installation is typically performed by a licensed millwright or mechanical technician. Disconnect and lock out all power to the drive system before mounting or removing any coupling components. Verify shaft diameter and keyway dimensions match the bore and keyway specs of this hub before installation. Torque the set screw over the keyway per applicable mechanical standards and confirm proper alignment of both shafts before returning the system to service.

Technical Specifications

• Coupling Size: WE4
• Horsepower at 1,160 RPM: 10 hp
• Horsepower at 1,750 RPM: 15 hp
• Horsepower at 3,500 RPM: 31 hp
• Horsepower at 100 RPM: 0.88 hp
• Rated Torque: 550 in-lb
• Torsional Stiffness: 5,370 in-lb/rad
• Maximum Speed: 7,500 RPM
• Bore Diameter: 1-3/8 inches
• Bore Type: Round Keyed
• Bore Tolerance: +0.0005 inches / +0.0015 inches
• Keyway Width: 5/16 inches
• Keyway Depth: 5/32 inches
• Length Through Bore: 1-11/16 inches
• Hub Diameter: 2.6 inches
• Coupling Length Standard Assembly: 4.68 inches
• Angular Misalignment: 4 degrees
• Parallel Misalignment: 0.0625 inches
• Minimum Operating Temperature: -40 degrees F
• Maximum Operating Temperature: 200 degrees F
• Hub Material: Steel
• Set Screw Location: Over Keyway
• Screw Thread Size: 1/4 inch-20
• Weight: 1.1 pounds
• Country of Origin: Mexico (subject to change)

Standard Information

• Brand: TB WOODS
• Manufacturer Part Number: TB-WE4H138