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Black EPDM rubber sleeve coupling insert, two-piece design with retaining ring

Tb Wood'S

Tb Wood'S Sure-Flex Sleeve Coupling Insert 4E EPDM Rubber

SKU CH-7B7C-EZTYP

EPDM rubber sleeve coupling insert for size 4 couplings, rated to 7,600 RPM and 156 in-lb torque with 1 degree angular and .01 in parallel misalignment capacity

  • EPDM rubber withstands 275 °F continuous heat
  • 156 in-lb torque capacity drives blowers and pumps
  • 7,600 RPM rating suits high-speed motor shafts
  • 458 in-lb/rad torsional stiffness keeps motion precise
  • 1° angular and .01 in parallel misalignment tolerance eases alignment

Purpose and Fit

The TB Woods Sure-Flex sleeve coupling insert size 4E connects driving and driven shafts in blowers, compressors, conveyors, mixers, motors and pumps. It suits new installations or maintenance replacements where an EPDM rubber element rated for 275 degrees F is required.

Capacity and Limits

The insert transmits up to 156 in-lb of torque and 0.25 hp at 100 rpm with a maximum speed of 7,600 rpm. Torsional stiffness is 458 in-lb per radian. It accommodates 1 degree of angular misalignment and 0.01 in of parallel offset; beyond those limits the element will wear prematurely.

Construction and Daily Use

The two-piece design with a retaining ring allows the insert to be replaced without moving the coupled hubs. EPDM material resists heat, ozone and many industrial fluids. The 2 5/16 in outside diameter and 1 1/4 in width fit standard size 4 hubs for straightforward mounting.

Highlights

  • EPDM rubber withstands 275 °F continuous heat
  • 156 in-lb torque capacity drives blowers and pumps
  • 7,600 RPM rating suits high-speed motor shafts
  • 458 in-lb/rad torsional stiffness keeps motion precise
  • 1° angular and .01 in parallel misalignment tolerance eases alignment

Specifications

No published specifications for this item yet.

Questions about this item

Will the 4E EPDM insert handle the 7,600 RPM limit if I keep my existing coupling hubs?

Yes, the insert is rated for 7,600 RPM maximum speed and 156 in-lb maximum torque, so your current hubs must stay within those limits.

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

Check that the two-piece insert with retaining ring sits flush in the hub jaws and that the coupling runs without vibration up to the 7,600 RPM rating.

Does the package include the retaining ring and hubs, or only the EPDM sleeve?

The box contains the 2-piece EPDM sleeve insert with its retaining ring; coupling hubs are sold separately.

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