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Black rubber coupling insert with flanged cylindrical shape and smooth matte finish

Tb Wood'S

Tb Wood'S 4J Sure-Flex Sleeve Coupling Insert 4JE EPDM

SKU CH-0360-YBXKM

EPDM rubber sleeve coupling insert rated for 7,600 RPM and 156 in-lb torque, with 1-degree angular and 0.01 in parallel misalignment capacity

  • EPDM rubber resists heat up to 275 °F
  • Handles 156 in-lb torque for reliable power transfer
  • One-piece solid insert simplifies installation and alignment
  • Rated for 7,600 RPM in blower and pump drives
  • Absorbs 1° angular and .01 in parallel misalignment

Coupling Insert for 4J Size

This TB Woods sleeve coupling insert fits size 4J Sure-Flex couplings and is made from EPDM rubber. It suits blowers, compressors, conveyors, mixers, motors and pumps where flexible shaft connection is needed. The one-piece solid construction simplifies installation and replacement. Buyers needing a different coupling size or a non-EPDM material cannot use this part.

Thermals Noise and Power Draw

The insert operates up to 275 degrees F and handles 7,600 RPM with a torque limit of 156 in-lb. At 100 RPM it transmits 0.25 hp while torsional stiffness measures 458 in-lb per radian. Angular misalignment up to 1 degree and parallel offset of .01 in are accommodated without extra vibration. No active cooling or lubrication is required.

Build Quality and Mounting Implications

Outside diameter is 2 5/16 in and insert width is 1 1/4 in, matching standard 4J hub dimensions for direct fit. The solid EPDM body resists oil, ozone and weathering in typical industrial environments. California Proposition 65 warnings apply for cancer and reproductive-harm chemicals. Installers must verify shaft alignment stays within the stated limits.

Highlights

  • EPDM rubber resists heat up to 275 °F
  • Handles 156 in-lb torque for reliable power transfer
  • One-piece solid insert simplifies installation and alignment
  • Rated for 7,600 RPM in blower and pump drives
  • Absorbs 1° angular and .01 in parallel misalignment

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the 4JE EPDM sleeve insert and what alignment step is often missed?

Slide the one-piece solid insert between the two coupling hubs and verify angular misalignment stays within 1 degree and parallel offset within 0.01 in.

What maintenance or replacement will the EPDM insert need over time?

Inspect the EPDM rubber for cracking or hardening; replace the insert when torsional stiffness drops below 458 in-lb/rad or the rubber shows permanent deformation.

Which limit appears first when the coupling runs continuously at high speed?

The 7,600 RPM maximum speed rating is reached before the 156 in-lb torque or 275 °F temperature limits under sustained operation.

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