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Cast iron Sure-Flex sleeve coupling flange, 8S size, 1-3/4 inch round keyed bore, 5 29/64 inch outside diameter

Tb Wood'S

Tb Wood'S 8S134 Sure-Flex Sleeve Coupling Flange 8S Bore 1-3/4 in

SKU CH-N478-KHRSS

A cast-iron flange hub with a 1-3/4 inch round keyed bore, rated for 4,500 RPM and 1,475 in-lb torque in compressors, conveyors, motors and pumps

  • Handles 4,500 RPM for high-speed drives
  • Transmits 1,475 in-lb torque reliably
  • Cast-iron hub resists wear in tough service
  • 1-3/4 in bore with tight tolerance fits shafts precisely
  • Suits compressors, conveyors, motors and pumps

Product Identity

The Tb Wood'S 8S134 Sure-Flex Sleeve Coupling Flange is a cast-iron flange hub designed for power-transmission systems. It fits a 1-3/4 inch round keyed bore with a tolerance of +0.0005 in to +0.0015 in and carries a maximum torque rating of 1,475 in-lb at speeds up to 4,500 RPM.

Fit and Limitations

This flange suits maintenance crews and OEM assemblers replacing a size-8 coupling on compressors, conveyors, motors or pumps that use the specified bore. It will not work for applications needing a different coupling size, a larger bore diameter, a bushing-mounted hub or a hub material other than cast iron.

Installation Notes

The hub body length is 3/4 in and the length through bore is 2-3/32 in, so shaft engagement depth must match those dimensions. The keyed bore requires a correctly sized key; an undersized or oversized key is the most common cause of vibration or premature wear.

How it compares

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

Price $46.99
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 shaft size and keyway does the 1-3/4 in bore with +0.0005 / +0.0015 in tolerance require?

The flange fits a 1-3/4 inch round keyed shaft; the bore tolerance is +0.0005 to +0.0015 inch, so the keyway must match that shaft diameter.

Will the cast-iron 8S flange rated for 4,500 RPM and 1,475 in-lb torque overload an older motor or pump shaft?

The flange handles up to 4,500 RPM and 1,475 in-lb; verify the existing shaft and key are rated for at least those limits before coupling.

How can I confirm the 5 29/64 in outside diameter and 2 3/32 in length through bore are seated correctly after installation?

Measure the installed flange OD at 5 29/64 inch and length through bore at 2 3/32 inch; check for zero axial play and smooth rotation up to 4,500 RPM.

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