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Cast-iron flange coupling hub, 1-1/2 inch bore, keyed, 5-29/64 inch OD

Tb Wood'S

Tb Wood'S 8S112 Sure-Flex Sleeve Coupling Flange 8S Bore 1-1/2 in

SKU CH-V0RR-KWG56

Connects shafts up to 4,500 RPM and 1,475 in-lb torque with a 1-1/2 inch bore

  • Designed for compressors, conveyors, motors and pumps
  • Handles up to 4,500 RPM for high-speed drives
  • Transmits 1,475 in-lb torque reliably
  • Precision bore tolerance of +.0005 to +.0015 in
  • Cast-iron flange hub resists wear in tough service

Sure-Flex Sleeve Coupling Flange 8S

This cast-iron flange hub fits Sure-Flex coupling size 8 and accepts a 1-1/2 inch round keyed bore. It is designed for compressors, conveyors, motors and pumps where a reliable mechanical connection is required. The hub diameter measures 3-1/4 inches with a length through bore of 2-3/32 inches.

Maximum torque rating 1,475 in-lb

The coupling transmits up to 1,475 inch-pounds of torque at speeds up to 4,500 RPM. Bore tolerance is held to +0.0005 / +0.0015 inches to ensure a precise fit on the shaft. This single rating determines whether the flange matches the application load.

Sustained operation at rated limits

Under continuous load the cast-iron hub maintains dimensional stability up to the rated 4,500 RPM and 1,475 in-lb. The keyed bore and tight tolerance prevent fretting or backlash during extended duty cycles. Heat buildup stays within material limits without additional cooling provisions.

How it compares

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

Price $47.99
Pricier than about 61% of the 693 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

What does the 4,500 RPM rating mean when this flange is installed on a compressor shaft?

The 4,500 RPM limit is the maximum safe rotational speed for the 8S size; running the compressor shaft faster risks sleeve fatigue and hub failure.

How does the 1-1/2 inch keyed bore and +0.0005/+0.0015 tolerance affect shaft fit?

The round keyed bore accepts a 1-1/2 inch shaft with a standard keyway; the tolerance range gives a light interference fit that prevents fretting while allowing assembly without heating.

What clearance is needed to mount the 5 29/64 inch outside diameter flange on a pump?

The flange measures 5 29/64 inches across, so allow at least that diameter plus space for the 3 1/4 inch hub and 2 3/32 inch bore length when positioning the pump coupling.

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