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Carbon steel jaw coupling hub with 7/16 inch bore and keyway

Lovejoy

Lovejoy L075 7/16 in Jaw Coupling Hub 757/1618KS

SKU CH-57A9-02G4Z

Carbon steel jaw coupling hub with 7/16 inch bore, keyway and set screw for L075 series elements up to 11,000 RPM

  • Carbon-steel hub rated for 11,000 RPM
  • 7/16 in bore with 1/8 in keyway fits standard shafts
  • Set-screw locking gives quick, secure installation
  • Works with Buna-N, Urethane or Hytrel spider elements
  • 36 hp at 100 RPM with Hytrel spider

Jaw Coupling Hub L075

The Lovejoy L075 hub fits a 7/16 inch round bore with a standard keyway and uses a set screw for shaft locking. It is intended for machinery builders and maintenance crews who need a straight-jaw hub that accepts L075 Buna-N, Urethane or Hytrel center elements.

Installation and common issues

The set screw locks onto the shaft without special tools, making field replacement straightforward. The most common issue is forgetting to match the spider material to the torque demand, which can cause premature element wear or vibration.

Capacity and headroom

Rated at 11,000 RPM maximum speed, the hub transmits 0.14 hp at 100 RPM with a Buna-N spider, 0.21 hp with Urethane and 0.36 hp with Hytrel. It runs out of capacity when the application exceeds the chosen spider's torque rating or the hub's speed limit.

Highlights

  • Carbon-steel hub rated for 11,000 RPM
  • 7/16 in bore with 1/8 in keyway fits standard shafts
  • Set-screw locking gives quick, secure installation
  • Works with Buna-N, Urethane or Hytrel spider elements
  • 36 hp at 100 RPM with Hytrel spider

Specifications

No published specifications for this item yet.

Questions about this item

How can I verify the L075 hub is running correctly after installation?

Confirm the shaft speed stays at or below 11,000 RPM and that transmitted power matches the spider rating — 0.14 hp at 100 RPM for Buna-N, 0.21 hp for Urethane, or 0.36 hp for Hytrel.

What components are included with the L075 hub and what must be purchased separately?

The hub itself is supplied; a compatible centre element — part L075H, L075N, or L075U — must be bought separately to complete the coupling.

Which centre element version should I choose for the L075 hub?

Select L075H for Buna-N (0.14 hp at 100 RPM), L075U for Urethane (0.21 hp), or L075N for Hytrel (0.36 hp) depending on the torque and damping you need.

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