Tb Woods TB-4J Sleeve Coupling Insert Size 4 Epdm

Product Description

The TB WOODS TB-4J is a one-piece solid EPDM sleeve coupling insert designed to join two compatible coupling flanges and complete a sleeve coupling assembly. Rated for 156 in-lb of torque and a maximum speed of 7,600 RPM, this insert handles both angular and parallel shaft misalignment in demanding mechanical drive applications. Its four-way flexing action absorbs shock, end float, and vibration, protecting connected equipment from dynamic load spikes. Installation is straightforward for mechanical and industrial service technicians working on motor-driven systems across a range of industries.

The TB-4J is suited for use in blowers, compressors, conveyors, mixers, motors, and pumps in both light commercial and industrial settings. Its EPDM construction provides chemical and oil resistance, making it appropriate for environments where fluid exposure is common. The insert operates reliably across a wide temperature range, from -30 degrees F to 275 degrees F, supporting year-round service in both indoor and outdoor mechanical installations.

Key Features

• One-piece solid EPDM construction for reliable torque transmission up to 156 in-lb
• Maximum operating speed of 7,600 RPM
• Four-way flexing action absorbs shock, vibration, misalignment, and end float
• Accommodates angular misalignment up to 1 degree and parallel misalignment up to 0.01 inches
• Chemical resistant and oil resistant EPDM material
• Wide service temperature range: -30 degrees F to 275 degrees F

Compatibility

Designed as an OEM-style replacement insert for size 4 sleeve coupling systems using compatible JE or JN series coupling flanges in standard mechanical drive assemblies.

Installation Notes

Installation is typically performed by a licensed millwright or mechanical technician. Disconnect and lock out all power to the drive system before removing or installing the coupling insert. Verify shaft alignment is within the specified angular and parallel misalignment tolerances before completing assembly. Follow applicable ANSI and OSHA machine guarding requirements when reinstalling coupling guards after service.

Technical Specifications

• Coupling Size: 4
• Rated Torque: 156 in-lb
• Torsional Stiffness: 458 in-lb/rad
• Maximum Speed: 7,600 RPM
• Horsepower at 100 RPM: 0.25 hp
• Horsepower at Speed: 4.5 hp at 1,800 RPM; 8.9 hp at 3,600 RPM
• Insert Width: 1.25 inches
• Outside Diameter: 2.3125 inches
• Angular Misalignment: 1 degree
• Parallel Misalignment: 0.01 inches
• Minimum Operating Temperature: -30 degrees F
• Maximum Operating Temperature: 275 degrees F
• Insert Material: EPDM
• Insert Construction: One Piece - Solid
• Resistance Properties: Chemical Resistant; Oil Resistant
• Weight: 0.1 pounds
• Country of Origin: USA (subject to change)

Standard Information

• Brand: TB WOODS
• Manufacturer Part Number: TB-4J