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Carbon steel jaw coupling hub with straight jaws and keyway bore

Lovejoy

Lovejoy L150 Jaw Coupling Hub 1-3/4 in v-belt

SKU CH-Z47S-MR4JD

Connects shafts up to 5,000 RPM with a 1-3/4 in bore and set-screw locking

  • Fits 1-3/4 in shafts with 3/8 in keyway
  • Carbon steel hub rated for 5,000 RPM maximum speed
  • Transmits 2 hp at 100 RPM with Buna-N spider
  • Transmits 3 hp at 100 RPM with urethane spider
  • Transmits 5.9 hp at 100 RPM with Hytrel spider

Jaw Coupling Hub L150 1-3/4 in Bore

This jaw coupling hub fits shafts measuring 1-3/4 inches and uses a set-screw locking method. It is built from carbon steel for industrial power-transmission assemblies. The straight-jaw profile accepts L150 Buna-N, urethane or Hytrel centre elements. Maintenance teams and machine builders specify it for direct-drive connections.

Coupling Size L150 Speed and Power Limits

The hub is rated to 5,000 RPM maximum speed. At 100 RPM it transmits 2 hp with a Buna-N spider, 3 hp with urethane and 5.9 hp with Hytrel. Exceeding the RPM limit or the horsepower rating for the chosen element risks premature wear or sudden failure. Select the spider material that matches the actual torque demand.

Replaces Worn L150 Hubs on Existing Shafts

This hub directly replaces a damaged or corroded L150 hub on the same 1-3/4 inch shaft without changing the centre element. The upgrade is worthwhile when the keyway shows fretting, the set-screw threads are stripped or the jaws are cracked. It does not adapt to different shaft diameters or coupling sizes.

Highlights

  • Fits 1-3/4 in shafts with 3/8 in keyway
  • Carbon steel hub rated for 5,000 RPM maximum speed
  • Transmits 2 hp at 100 RPM with Buna-N spider
  • Transmits 3 hp at 100 RPM with urethane spider
  • Transmits 5.9 hp at 100 RPM with Hytrel spider

Specifications

No published specifications for this item yet.

Questions about this item

Which bore diameter and coupling size should I select for my shaft?

This hub is manufactured with a 1-3/4 in bore diameter and is designated as coupling size L150.

What horsepower can this hub transmit at 100 RPM with different spider materials?

At 100 RPM the hub delivers 2 hp with a Buna-N spider, 3 hp with a Urethane spider and 5.9 hp with a Hytrel spider.

What is the maximum rotational speed and which centre elements are compatible?

The hub is rated for a maximum speed of 5,000 RPM and works with centre elements L150H, L150N and L150U.

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