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Cast iron flange coupling hub, round keyed bore, silver-grey finish

Tb Wood'S

Tb Wood'S 8S178 Sure-Flex Sleeve Coupling Flange 8S Bore 1-7/8 in

SKU CH-ZHXE-FERN2

Connects shafts in compressors, conveyors, motors and pumps using a cast-iron flange with 1-7/8 in bore and 4,500 RPM rating

  • Ready for high-speed drives up to 4,500 RPM
  • Handles peak torque loads of 1,475 in-lb
  • Precision bore tolerance of +.0005 / +.0015 in
  • Durable cast-iron hub resists wear in tough service
  • Direct-fit 1-7/8 in keyed bore simplifies installation

8S Coupling Flange for 1-7/8 in Shafts

This cast-iron flange fits a 1-7/8 inch round keyed bore with a tolerance of +.0005 to +.0015 inches. It is built for compressors, conveyors, motors and pumps that use a size 8 Sure-Flex sleeve coupling. The hub diameter measures 3 1/4 inches and the overall outside diameter is 5 29/64 inches.

Torque and Speed Headroom

The flange transmits up to 1,475 in-lb of torque and is rated for a maximum speed of 4,500 RPM. Within those limits it handles normal start-stop cycles and steady loads on the listed equipment. Applications exceeding either the torque or speed rating will require a larger coupling size.

Inch-Series Interface Constraints

The component uses inch-system dimensions throughout, including a 2 3/32 inch length through bore and a 3/4 inch hub body length. It does not accept a separate bushing, so the shaft must match the 1-7/8 inch bore directly. Metric shafts or non-keyed profiles are not compatible with this flange.

Highlights

  • Ready for high-speed drives up to 4,500 RPM
  • Handles peak torque loads of 1,475 in-lb
  • Precision bore tolerance of +.0005 / +.0015 in
  • Durable cast-iron hub resists wear in tough service
  • Direct-fit 1-7/8 in keyed bore simplifies installation

Specifications

No published specifications for this item yet.

Questions about this item

Will the 8S flange with its 1-7/8 in bore fit the shaft on my existing motor?

The flange has a round keyed bore of 1-7/8 in with a tolerance of +0.0005 in to +0.0015 in. Match your shaft diameter and keyway to these dimensions for a proper fit.

How can I confirm the coupling is running correctly after installation?

Verify the assembly stays within the 4,500 RPM maximum speed and 1,475 in-lb torque limits. Check for vibration, unusual noise or excessive heat during operation.

Does the package include the flexible sleeve and hardware, or must I order them separately?

This listing is for the cast iron flange hub only. The Sure-Flex sleeve and any required fasteners are sold separately.

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