Tb Woods TB-WE2H78 Tire Coupling Hub 7/8 Inch Bore

Product Description

The TB WOODS TB-WE2H78 is a flanged shaft hub designed for use with WE2 series tire coupling assemblies. It features a finished bore with keyway and set screw, allowing direct mounting to a compatible shaft. With a 7/8 inch bore diameter and a hub outside diameter of 1.85 inches, this hub mates with a corresponding tire coupling element to transmit torque between shafts. Rated at 0.3 horsepower at 100 RPM and capable of up to 7,500 RPM, it suits light-duty power transmission applications. The hub is constructed from low carbon steel and cast iron for durability in industrial drive setups. Installation is straightforward for millwrights and mechanical contractors familiar with flexible coupling systems.

This hub is used in industrial and commercial power transmission systems where a flexible tire-style coupling is required to connect two shafts. The WE2 coupling size code 2 designation identifies the hub as part of the WE2 series, pairing with the corresponding tire element and a matching hub on the driven side. Typical applications include pumps, fans, compressors, and conveyor drives where shock absorption and slight misalignment tolerance are required. Its compact length through bore of 0.94 inches suits tight drive train configurations.

Key Features

• Finished bore with keyway and set screw for secure shaft engagement
• 7/8 inch bore diameter fits standard shaft sizes in the WE2 coupling range
• Flanged hub design for positive engagement with the tire coupling element
• Rated up to 7,500 RPM for higher-speed drive applications
• Low carbon steel and cast iron construction for mechanical durability
• WE2 series coupling size code 2 for straightforward replacement or assembly sourcing

Compatibility

Designed as an OEM-style replacement or assembly component for WE2 series tire coupling systems requiring a flanged shaft hub with a 7/8 inch finished bore.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. Disconnect and lock out all power to the drive system before handling any coupling components. Ensure the shaft and bore are clean and free of burrs before pressing or sliding the hub into position. Verify alignment of the coupled shafts to within the tolerance of the tire element before returning the drive to service.

Technical Specifications

• Bore Diameter: 0.875 inches
• Hub Outside Diameter: 1.85 inches
• Length Through Bore: 0.94 inches
• Coupling Size Code: 2
• Bore Type: Finished with Keyway and Set Screw
• Hub Type: Flanged Shaft Hub
• Horsepower at 100 RPM: 0.3 hp
• Maximum Speed: 7,500 RPM
• Hub Material: Cast Iron
• Material: Low Carbon Steel
• Weight: 0.35 pounds

Standard Information

• Brand: TB WOODS
• Manufacturer Part Number: TB-WE2H78