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Cast iron flange hub, 2-3/8 inch bore, 6-11/32 inch diameter, Sure-Flex sleeve coupling

Tb Wood'S

Tb Wood'S 9S238 Sure-Flex Sleeve Coupling Flange

SKU CH-6YMQ-SKJHZ

A cast-iron flange hub with a 2-3/8 in round keyed bore for Sure-Flex sleeve couplings rated to 3,750 RPM and 2,340 in-lb torque

  • Fits 2-3/8 in shaft with +0.0005/+0.0020 in bore tolerance
  • Handles 2,340 in-lb torque for compressors, conveyors, motors, pumps
  • Runs up to 3,750 RPM with 6 11/32 in outside diameter
  • Cast-iron flange hub with 3 5/8 in hub diameter
  • 2 13/32 in length through bore and 25/32 in hub body length

Flange for 9S coupling size

The TB WOODS 9S238 Sure-Flex sleeve coupling flange connects shafts in compressors, conveyors, motors and pumps. It handles a maximum torque of 2,340 in-lb at speeds up to 3,750 RPM. The cast-iron hub measures 3 5/8 in diameter with a 2 3/8 in round keyed bore.

Replaces worn or undersized flanges

Swap this in when an existing 9S flange shows fretting, keyway damage or cannot transmit the required 2,340 in-lb. The jump is worth it if your drivetrain runs near 3,750 RPM and the current hub body length of 25/32 in matches the spacing you have.

Fits 9S Sure-Flex sleeves with 2 3/8 in shafts

The flange needs a matching 9S sleeve and a shaft held to a bore tolerance of +0.0005 in / +0.0020 in. Its 2 13/32 in length through bore sets the hub engagement, while the 6 11/32 in outside diameter clears standard guards. No bushing is used, so the shaft must be machined to the stated bore diameter.

Highlights

  • Fits 2-3/8 in shaft with +0.0005/+0.0020 in bore tolerance
  • Handles 2,340 in-lb torque for compressors, conveyors, motors, pumps
  • Runs up to 3,750 RPM with 6 11/32 in outside diameter
  • Cast-iron flange hub with 3 5/8 in hub diameter
  • 2 13/32 in length through bore and 25/32 in hub body length

Specifications

No published specifications for this item yet.

Questions about this item

What bore diameter and tolerance does the 9S238 flange need on the shaft?

The flange has a 2 3/8 in round keyed bore with a tolerance of +0.0005 in to +0.0020 in over nominal shaft size.

How do you install the 9S238 flange and what step is often missed?

Slide the flange onto the keyed shaft, align the key, then secure with the set screw over the keyway; the step often missed is tightening the set screw to the specified torque after alignment.

What maintenance does the 9S238 flange need over time?

Inspect the cast iron hub for wear or cracking, check the key and keyway for fretting, and verify the sleeve element remains flexible and undamaged during scheduled downtime.

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