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Carbon steel jaw coupling hub, straight jaws, half-inch bore, set-screw locking

Lovejoy

Lovejoy L075 Jaw Coupling Hub 1/2 in Bore

SKU CH-TEXQ-KRSVC

Jaw coupling hub with 1/2 in bore, carbon steel construction and set-screw locking rated to 11 000 RPM

  • Carbon steel hub handles up to 11,000 RPM for reliable high-speed operation
  • Set screw locking on 1/2 in round bore secures shaft without keyway machining
  • Straight jaw profile accepts L075H, L075N and L075U center elements for flexible spider choice
  • Delivers 0.14 hp at 100 RPM with Buna-N spider for standard duty
  • Urethane or Hytrel spiders raise output to 0.21 hp or 0.36 hp at 100 RPM

Jaw Coupling Hub L075 1/2 in Bore

The Lovejoy L075 jaw coupling hub fits a 1/2 inch round bore with a set-screw locking method. It is built from carbon steel with a straight jaw profile for general power-transmission duties. Maintenance teams and machine builders use it to connect shafts in light industrial equipment.

Inch-Series Limits 11 000 RPM

The hub follows inch-series dimensions with a 1 3/4 inch outside diameter and 2 1/8 inch overall length. Its maximum rated speed is 11 000 RPM so applications above that limit need a different coupling size. Horsepower ratings at 100 RPM vary with the spider material chosen.

Spider Material Determines Torque Capacity

Select the centre element to match the load: Buna-N spider delivers 0.14 hp, urethane spider 0.21 hp and Hytrel spider 0.36 hp at 100 RPM. The hub accepts manufacturer part numbers L075H, L075N and L075U for those respective spiders. Buyers who need higher torque per size must choose a larger coupling series.

Highlights

  • Carbon steel hub handles up to 11,000 RPM for reliable high-speed operation
  • Set screw locking on 1/2 in round bore secures shaft without keyway machining
  • Straight jaw profile accepts L075H, L075N and L075U center elements for flexible spider choice
  • Delivers 0.14 hp at 100 RPM with Buna-N spider for standard duty
  • Urethane or Hytrel spiders raise output to 0.21 hp or 0.36 hp at 100 RPM

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the Buna-N, Urethane or Hytrel spider for my L075 hub?

The hub accepts L075H, L075N or L075U elements. Buna-N gives 0.14 hp at 100 RPM, Urethane 0.21 hp and Hytrel 0.36 hp. Pick the rating that matches your torque requirement.

What does the 11,000 RPM limit mean once the hub is installed?

It is the maximum safe rotational speed for the L075 hub. Exceeding it risks mechanical failure, so ensure your driven shaft stays below that figure.

What does the 1/4-20 UNC set screw cap in practice?

The 1/4-20 UNC 2B set screw locks the 1/2 in round bore to the shaft. It transmits torque by friction on the keyway-less shaft up to the spider's horsepower rating.

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