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Cast iron Sure-Flex sleeve coupling flange, 1-7/8 inch bore, 6 11/32 inch OD

Tb Wood'S

Tb Wood'S Sure-Flex Sleeve Coupling Flange 9S 1-7/8 in Bore

SKU CH-8HRK-9T2HK

A cast-iron flange hub for sleeve couplings, sized 9S with a 1-7/8 inch round keyed bore, rated to 3,750 RPM and 2,340 in-lb torque for compressors, conveyors, motors and pumps

  • Transmits high torque up to 2,340 in-lb
  • Operates at speeds up to 3,750 RPM
  • Precision bore tolerance of +0.0005 in / +0.0015 in
  • Cast iron hub ensures durability
  • Fits 1-7/8 in round keyed shafts

Industrial Coupling Flange 9S

The Tb Wood'S Sure-Flex flange is a cast-iron hub built for round keyed shafts in compressors, conveyors, motors and pumps. It fits a 1-7/8 in bore with a tolerance of +.0005 in to +.0015 in. Buyers needing a different bore diameter or a splined connection cannot use this part.

Sustained Operation Rating

The component is rated for a maximum speed of 750 RPM and a maximum torque of 2340 in-lb. These limits define continuous duty capacity rather than a brief peak allowance. Exceeding either value risks premature wear or mechanical failure in the drivetrain.

Bore Fit Decides Compatibility

The 1-7/8 in round keyed bore with the stated tolerance is the single dimension that determines whether this flange matches the driven shaft. Verify the shaft diameter and keyway specification before ordering to ensure correct engagement.

How it compares

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

Price $70.99
Pricier than about 72% of the 693 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much heat or noise does the 9S flange generate at 3,750 RPM?

The cast-iron flange itself has no moving parts that produce heat or noise; any temperature rise or sound comes from the driven equipment it connects to.

What shaft and keyway must I already have to mount this 1-7/8 in bore flange?

You need a 1-7/8 in diameter shaft with a standard keyway that fits the +0.0005 in to +0.0015 in bore tolerance of the flange hub.

Will this 9S flange align with older Sure-Flex sleeves rated for 2,340 in-lb torque?

Yes, the 9S size matches the 2,340 in-lb torque rating and 6 11/32 in outside diameter used by existing Sure-Flex sleeves of the same series.

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