TB Woods 7JES Insert

The TB Woods 7JES is a premium EPDM split sleeve insert engineered for size 7 Sure-Flex Plus coupling assemblies. As a veteran-grade elastomeric coupling component, the 7JES (part number 004250) utilizes a one-piece split design, allowing for rapid installation or replacement without the need to dismantle the driving or driven equipment from the shafts. This Sure-Flex sleeve is molded from high-density EPDM rubber, providing a significant 30% increase in torque capacity (rated at 940 in-lb) compared to standard legacy inserts. It effectively manages torsional vibration and accommodates up to 1° of angular misalignment and 0.020 inches of parallel offset. This black EPDM insert is designed to operate within a temperature range of -30°F to +275°F, ensuring reliable shaft alignment and shock absorption in demanding HVACR and industrial pump applications. Its 4-way flexing action prevents metal-to-metal contact, significantly reducing bearing wear and extending the operational life of flexible coupling systems.

• Direct Replacement: Seamlessly replaces the TB Woods 004250 and retrofits existing size 7 flanges.
• Split Construction: The 7JES split sleeve design allows for "in-place" installation, reducing downtime during maintenance cycles.
• High Performance EPDM: Optimized for chemical resistance and torsional flexibility, providing 3x the service life of standard imitator sleeves.
• Maintenance-Free: Eliminates the need for lubrication, making it ideal for clean-room or inaccessible HVACR environments.
• Energy Efficiency: Absorbs shock loads and dampens harmonics to protect sensitive motor and pump components.

Is the 7JES interchangeable with the 7JE solid sleeve?
Yes, the 7JES (Split) and 7JE (Solid) share the same physical dimensions and performance ratings. The 7JES is preferred for maintenance where moving the motor is not feasible.

Can I use an EPDM 7JES to replace a Hytrel sleeve?
No. EPDM and Hytrel have vastly different torque ratings and wind-up characteristics. Always match the sleeve material to the original system specifications to prevent premature failure.

What is the maximum RPM for the size 7 Sure-Flex Plus assembly?
The TB Woods 7JES is rated for a maximum speed of 5250 RPM when used with high-strength flanges.

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.