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Carbon steel jaw coupling hub, straight jaws, set screw locking, 7/16 inch bore with keyway

Lovejoy

Lovejoy L090 7/16 in Jaw Coupling Hub

SKU CH-AVTT-KEWTZ

Connects 7/16 in shafts at up to 9,000 RPM with carbon-steel hub and set-screw locking

  • 7/16 in bore fits shaft directly
  • Carbon steel hub handles 9,000 RPM operation
  • Set-screw locking secures hub without extra parts
  • 64 hp at 100 RPM with Hytrel spider
  • Straight jaw profile suits standard L090 spiders

Jaw Coupling Hub for L090 Series

The Lovejoy L090 hub fits a 7/16 inch bore with a keyway and set-screw locking. It is intended for maintenance teams and OEM builders assembling or repairing light-duty power-transmission drives.

Carbon Steel Hub with Straight Jaw Profile

The carbon-steel body measures 2 7/64 inches outside diameter and 2 1/8 inches overall length. Straight jaws accept Buna-N, urethane or Hytrel spiders, while the keyway depth of 3/64 inch and width of 3/32 inch secure the shaft in everyday service.

Replaces Worn L090 Hubs at 9000 RPM Limit

Swapping a damaged hub restores the original 0.23 hp at 100 rpm with Buna-N, 0.35 hp with urethane or 0.64 hp with Hytrel. The upgrade is worth it when the existing hub shows keyway wear or jaw cracking but the spider and shaft remain serviceable.

Highlights

  • 7/16 in bore fits shaft directly
  • Carbon steel hub handles 9,000 RPM operation
  • Set-screw locking secures hub without extra parts
  • 64 hp at 100 RPM with Hytrel spider
  • Straight jaw profile suits standard L090 spiders

Specifications

No published specifications for this item yet.

Questions about this item

What RPM does the L090 hub limit to in practice?

The hub is rated for a maximum speed of 9,000 RPM, which is the practical ceiling for safe operation.

What shaft diameter and keyway does the L090 hub require to fit?

It accepts a 7/16 in round bore with a 3/32 in wide by 3/64 in deep keyway.

How is the L090 hub installed and what step is often missed?

Slide the hub onto the shaft, align the key in the keyway, then tighten the set screw over the key to lock it.

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