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Cast iron spacer hub, round keyed bore 1-5/8 inch, 3-1/4 inch outside diameter

Tb Wood'S

Tb Wood'S Sure-Flex Spacer Hub 8SC Bore 1-5/8" 8SCH158

SKU CH-JBHK-G2EGJ

A cast-iron spacer hub with a 1-5/8 inch round keyed bore connects shafts in compressors, conveyors, motors and pumps up to 4,500 RPM and 1,475 in-lb torque

  • TypeCouplings, Collars & Adapters
  • Handles demanding torque loads up to 1,475 in-lb
  • Operates reliably at speeds reaching 4,500 RPM
  • Precise bore tolerance of +0.0005 / +0.0015 in ensures secure fit
  • Cast iron construction withstands harsh industrial environments
  • Spacer hub design suits compressors, conveyors, motors and pumps

Sure-Flex Spacer Hub 8SC Bore 1-5/8

This TB Wood'S spacer hub connects rotating shafts in compressors, conveyors, motors and pumps. It suits maintenance engineers and original-equipment builders who need a cast-iron coupling component for inch-series power-transmission systems.

Install with standard keyed-shaft procedures

The hub has a round keyed bore of 1-5/8 inches with a tolerance of +.0005 to +.0015 inches. Length through bore is 1-23/32 inches. Misalignment beyond the coupling sleeve rating or an undersized keyway are the typical causes of vibration and premature wear.

Rated 4,500 RPM and 1,475 in-lb torque

These limits decide whether the hub matches the application. Exceeding either value risks hub or sleeve failure. The 3-1/4 inch outside and hub diameters fix the space envelope for the coupling assembly.

Highlights

  • Handles demanding torque loads up to 1,475 in-lb
  • Operates reliably at speeds reaching 4,500 RPM
  • Precise bore tolerance of +0.0005 / +0.0015 in ensures secure fit
  • Cast iron construction withstands harsh industrial environments
  • Spacer hub design suits compressors, conveyors, motors and pumps

Specifications

TypeCouplings, Collars & Adapters

Questions about this item

How do I confirm the spacer hub is running within its 4,500 RPM and 1,475 in-lb torque limits after installation?

Monitor the driven equipment speed with a tachometer and verify the motor torque rating does not exceed 1,475 in-lb; smooth rotation without vibration at operating speed indicates proper function.

What comes with the 8SC spacer hub and what must I supply separately?

The hub includes the cast-iron spacer body with a 1-5/8 in round keyed bore; you must supply the matching Sure-Flex sleeve, two flanges, key stock and shaft fasteners.

When should I choose the 8SC size with a 1-5/8 in bore versus another coupling size?

Select the 8SC spacer hub when your shaft diameter is 1-5/8 in and the application requires up to 4,500 RPM and 1,475 in-lb torque on compressors, conveyors, motors or pumps.

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