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Black neoprene sleeve coupling insert, split one-piece design, 5 1/16 inch diameter

Tb Wood'S

Tb Wood'S 8JNS Sure-Flex Sleeve Coupling Insert, Neoprene

SKU CH-N790-QBQXT

Neoprene sleeve coupling insert rated for 4,500 RPM, 1,475 in-lb torque and 2.3 hp at 100 RPM, with 1° angular and 0.02 in parallel misalignment capacity

  • Absorbs vibration with neoprene construction
  • Handles 1,475 in-lb maximum torque
  • Operates up to 4,500 RPM speed
  • Tolerates 1 degree angular misalignment
  • Withstands 200 degrees F operating temperature

Sure-Flex Sleeve Coupling Insert

The Tb Wood'S 8JNS is a neoprene coupling insert sized for coupling size 8. It fits mechanical drive systems such as blowers, compressors, conveyors, mixers, motors and pumps. The one-piece split construction simplifies installation and replacement on existing shafts. Maintenance teams handling general power transmission duties will find it a direct fit for compatible Sure-Flex sleeves.

Torque and speed capacity

Rated maximum torque is 1,475 in-lb with a top speed of 4,500 RPM. At 100 RPM the insert transmits 2.3 hp and offers torsional stiffness of 4,335 in-lb/rad. Angular misalignment up to 1 degree and parallel offset up to 0.02 in are accommodated. Demands beyond these torque, speed or misalignment limits will exceed the design envelope.

Thermal and power characteristics

Maximum operating temperature is 200 degrees F, setting the boundary for continuous running. Neoprene construction damps vibration without auxiliary lubrication, keeping noise low in normal service. Power draw follows the driven load up to the 2.3 hp rating at 100 RPM. Operation above the temperature or torque ceiling accelerates wear and reduces insert life.

Highlights

  • Absorbs vibration with neoprene construction
  • Handles 1,475 in-lb maximum torque
  • Operates up to 4,500 RPM speed
  • Tolerates 1 degree angular misalignment
  • Withstands 200 degrees F operating temperature

Specifications

No published specifications for this item yet.

Questions about this item

Will the 8JNS neoprene insert handle the 4,500 RPM limit of my existing Size 8 coupling hubs?

Yes — the insert is rated for 4,500 RPM maximum speed, matching the Size 8 coupling specification.

How can I confirm the insert is seated correctly after installation?

Verify that the split sleeve sits flush in both hubs and that the shafts turn freely with no binding; the 1° angular and 0.02 in parallel misalignment allowances will absorb normal alignment variations.

Does the package include the two coupling hubs or only the neoprene sleeve insert?

Only the 1-piece split neoprene sleeve insert is supplied; the two Size 8 hubs must be purchased separately.

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