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Aluminum L-jaw coupling hub with 7/8 inch bore and set screw

Lovejoy

Lovejoy AL09078 L-Jaw Coupling Hub 7/8

SKU CH-WZX5-ENANM

Aluminum jaw coupling hub with 7/8 inch bore, keyway, and set-screw locking for L090 series elements

  • Aluminium hub resists corrosion with lightweight L090 construction
  • 7/8 inch bore fits standard shafts using 3/16 inch keyway
  • Set-screw locking secures hub without additional hardware
  • 9000 RPM limit supports high-speed drives with straight jaws
  • 64 hp at 100 RPM using Hytrel spider element

Aluminium L090 hub for 7/8" shafts

The Lovejoy AL09078 is an L090 jaw coupling hub machined from aluminium with a 7/8 inch round bore and standard keyway. It uses a set screw locking method and a straight jaw profile designed to accept L090 Buna-N, urethane or Hytrel centre elements. The hub is rated to 9,000 RPM and suits light-duty power transmission applications.

Replaces worn L090 hubs on existing shafts

This hub directly substitutes a damaged or corroded L090 hub without changing the shaft or centre element. The upgrade is worthwhile when the original hub shows keyway wear, set screw damage or corrosion that affects alignment. Horsepower ratings at 100 RPM are 0.23 hp with Buna-N, 0.35 hp with urethane and 0.64 hp with Hytrel spiders.

Verify shaft diameter and keyway dimensions

Confirm the driven shaft measures exactly 7/8 inch diameter before ordering. Check that the existing keyway width is 3/16 inch and depth is 3/32 inch to match the hub. Ensure the centre element part number is L090H, L090N or L090U for compatibility. The overall hub length is 2 1/8 inches and outside diameter is 2 7/64 inches.

Highlights

  • Aluminium hub resists corrosion with lightweight L090 construction
  • 7/8 inch bore fits standard shafts using 3/16 inch keyway
  • Set-screw locking secures hub without additional hardware
  • 9000 RPM limit supports high-speed drives with straight jaws
  • 64 hp at 100 RPM using Hytrel spider element

Specifications

No published specifications for this item yet.

Questions about this item

What bore diameter and keyway dimensions does this L090 hub require for shaft fit?

The hub has a 7/8 in round bore with a 3/16 in wide keyway and 3/32 in keyway depth for standard shaft mounting.

How is this aluminum L090 hub secured to the shaft and which step is often missed?

It uses a set-screw locking type; the step often missed is tightening the set screw over the keyway after aligning the key to prevent hub slippage.

Which center element part numbers are compatible for future replacement on this L090 hub?

Compatible center elements are manufacturer part numbers L090H, L090N and L090U for Buna-N, urethane and Hytrel spiders respectively.

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