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Cast iron spacer hub, round keyed bore 1-5/8 inch, coupling size 7

Tb Wood'S

Tb Wood'S 7SCH158 Sure-Flex Coupling Spacer Hub 1-5/8" Bore

SKU CH-P3FE-A2SA2

A cast-iron spacer hub with a 1-5/8 in keyed bore joins Sure-Flex coupling size 7 in compressors, conveyors, motors and pumps at up to 5,250 RPM and 940 in-lb torque

  • Designed for 5,250 RPM compressor and pump drives
  • Handles 940 in-lb torque in conveyor and motor applications
  • Cast iron spacer hub with 1-5/8 in round keyed bore
  • Precision bore tolerance of +.0005 to +.0015 in for secure shaft fit
  • 1-15/32 in length through bore suits standard coupling assemblies

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

The TB Woods 7SCH158 is a cast-iron spacer hub for Sure-Flex sleeve couplings in size 7. It fits a 1-5/8 inch round keyed bore and transmits up to 940 in-lb at 5,250 RPM. Typical uses include compressors, conveyors, motors and pumps.

Verify Shaft and Coupling Size

Confirm the driven shaft measures 1-5/8 inch diameter with a standard keyway before ordering. The bore tolerance is +0.0005 to +0.0015 inch. Ensure the mating coupling half is also size 7 and that the application speed stays below 5,250 RPM.

Replaces Worn Size 7 Spacer Hubs

This hub directly replaces a damaged or corroded size 7 spacer hub with the same bore and keyway. The upgrade is worthwhile when the existing hub shows fretting, keyway wear or crack indications that compromise torque transmission.

Highlights

  • Designed for 5,250 RPM compressor and pump drives
  • Handles 940 in-lb torque in conveyor and motor applications
  • Cast iron spacer hub with 1-5/8 in round keyed bore
  • Precision bore tolerance of +.0005 to +.0015 in for secure shaft fit
  • 1-15/32 in length through bore suits standard coupling assemblies

Specifications

No published specifications for this item yet.

Questions about this item

What comes in the box with the Tb Wood'S 7SCH158 spacer hub and what else is needed to install it?

The spacer hub is supplied as a single cast-iron component with a 1-5/8 in round keyed bore. A matching Sure-Flex sleeve and the second hub for the driven shaft must be purchased separately to complete the coupling assembly.

How do I choose the correct version of this spacer hub for my application?

Select this hub when the driving or driven shaft measures 1-5/8 in diameter and the coupling size required is 7. The bore tolerance is +0.0005 in to +0.0015 in, so verify the shaft falls within that range before ordering.

What does the 5,250 RPM rating mean once the hub is mounted on a compressor or pump?

The 5,250 RPM figure is the maximum safe rotational speed for coupling size 7. In service the hub can transmit up to 940 in-lb of torque at that speed, provided the keyed connection and sleeve are correctly fitted and aligned.

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