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Black neoprene sleeve coupling insert size 7 with solid one-piece construction

Tb Wood'S

Tb Wood'S 7JN Sure-Flex Sleeve Coupling Insert Neoprene

SKU CH-M390-RYBNG

Neoprene sleeve coupling insert for size 7 couplings rated to 940 in-lb torque and 5,250 RPM

  • Handles 940 in-lb torque for heavy loads
  • Runs at 5,250 RPM for high-speed drives
  • Neoprene insert resists heat up to 200°F
  • Dampens vibration with 2,769 in-lb/rad stiffness
  • Allows 1° angular and 0.02 in parallel misalignment

Coupling Insert for Size 7 Systems

The Tb Wood'S 7JN Sure-Flex sleeve coupling insert is a neoprene component designed for power transmission assemblies. It suits maintenance teams and original-equipment builders who need a replacement or spare insert for Size 7 couplings. The one-piece solid construction simplifies installation in industrial machinery.

Fits Size 7 Couplings and Absorbs Misalignment

This insert sits inside a compatible Size 7 coupling hub pair, which must be sourced separately. It accommodates angular misalignment up to 1 degree and parallel offset up to .02 in, reducing vibration transmitted between connected shafts. The neoprene material dampens shock loads from starting or stopping driven equipment.

Rated for 940 in-lb Torque and 5 250 RPM

The insert transmits a maximum torque of 940 in-lb and operates up to 5 250 RPM, delivering 1.5 hp at 100 RPM with a torsional stiffness of 2 769 in-lb/rad. It handles continuous temperatures to 200 Degrees F, making it suitable for blowers, compressors, conveyors, mixers, motors and pumps. Applications exceeding these torque, speed or temperature limits will require a different coupling solution.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $42.99
Pricier than about 58% of the 693 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much torque can the 7JN insert handle before it reaches its limit under continuous operation?

The maximum torque rating is 940 in-lb, which is the threshold that will be reached first during sustained use.

What temperature will the neoprene insert reach when running all day at full load?

The insert is rated for a maximum operating temperature of 200 degrees Fahrenheit during continuous operation.

Which coupling hubs or sleeves must I already have for this size 7 neoprene insert to fit?

This insert fits Sure-Flex coupling hubs sized for coupling size 7 with a 4 11/32 inch outside diameter.

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