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Cast iron Sure-Flex sleeve coupling flange, 1-7/8 inch bore, 4-5/8 inch OD

Tb Wood'S

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

SKU CH-C207-K4D59

Connects shafts in compressors, conveyors, motors and pumps with a 1 7/8 inch keyed bore, 5 250 RPM limit and 940 in-lb torque capacity

  • Handles 940 in-lb torque for heavy loads
  • Runs up to 5,250 RPM in high-speed drives
  • 1-7/8 in bore fits standard shafts
  • Cast iron hub resists wear in tough environments
  • Precision bore tolerance ensures accurate alignment

Coupling Flange for 1-7/8 in Shafts

This Tb Wood'S Sure-Flex sleeve coupling flange fits a 1 7/8 inch round keyed bore. It is designed for power transmission in compressors, conveyors, motors and pumps. The cast iron hub provides durability for industrial machinery applications. Buyers needing a different bore size or a non-keyed connection cannot use this flange.

Maximum Torque Rating 940 in-lb

The flange transmits up to 940 in-lb of torque at speeds up to 5,250 RPM. This torque limit is the primary specification for selecting the correct coupling size 7 component. Exceeding this rating risks mechanical failure in the drive system. Verify your application torque requirements against this figure before installation.

Bore Tolerance +0.0005 to +0.0015 in

The bore tolerance of +0.0005 in to +0.0015 in ensures a precise interference fit on the shaft. This tight tolerance reduces backlash and vibration in high-speed rotating equipment. No bushings are required or compatible with this hub design. Shafts outside this tolerance range will not seat correctly.

Highlights

  • Handles 940 in-lb torque for heavy loads
  • Runs up to 5,250 RPM in high-speed drives
  • 1-7/8 in bore fits standard shafts
  • Cast iron hub resists wear in tough environments
  • Precision bore tolerance ensures accurate alignment

Specifications

No published specifications for this item yet.

Questions about this item

What does the 940 in-lb torque rating mean when this flange is installed in a drive line?

It is the maximum continuous torque the coupling can transmit without exceeding the sleeve's design limits, so the connected shafts and driven equipment must not impose more than 940 in-lb.

How does the 5,250 RPM maximum speed limit actual operation?

The flange and sleeve assembly is balanced for safe operation up to 5,250 RPM; running faster risks vibration, sleeve wear or flange failure.

What shaft and keyway dimensions are required to mount this 1-7/8 in bore flange?

The shaft must measure 1-7/8 in diameter with a tolerance of +0.0005 to +0.0015 in, and a standard keyway matching that bore size.

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