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Metal coupling hub with straight jaws, 30 mm bore, 64 mm outside diameter, 73 mm length

Lovejoy

Lovejoy L099 Jaw Coupling Hub 30 mm Bore 64 mm OD 73 mm Length

SKU CH-WTKJ-YT88E

Jaw coupling hub with a 30 mm bore, 64 mm outside diameter and 73 mm overall length for metric shafts

  • 30 mm bore fits standard metric shafts
  • Carbon steel hub withstands 7,000 RPM operation
  • Set-screw locking secures hub without additional hardware
  • Compatible with Buna-N, urethane or Hytrel spider elements
  • 64 mm outside diameter matches L099 coupling size

Lovejoy L099 Jaw Coupling Hub 30 mm Bore

The Lovejoy L099 jaw coupling hub is a carbon steel power transmission component designed for metric shafting. It connects driving and driven equipment through a compatible centre element. The hub suits general industrial machinery applications requiring a 30 mm bore with keyway.

Check shaft diameter and keyway dimensions before

Verify that the driven shaft measures exactly 30 mm diameter with an 8 mm wide by 3.3 mm deep keyway. Confirm the coupling size L099 matches the existing hub or element on the mating side. Ensure the set screw locking method is acceptable for the application torque and vibration levels.

Carbon steel hub with set screw locking

The straight jaw profile mates with L099H Buna-N, L099N urethane or L099U Hytrel centre elements to transmit up to 1.3 hp at 100 RPM. The 64 mm outside diameter and 73 mm overall length define the installed envelope. Set screw fixation allows straightforward axial positioning on round keyed shafts.

Highlights

  • 30 mm bore fits standard metric shafts
  • Carbon steel hub withstands 7,000 RPM operation
  • Set-screw locking secures hub without additional hardware
  • Compatible with Buna-N, urethane or Hytrel spider elements
  • 64 mm outside diameter matches L099 coupling size

Specifications

No published specifications for this item yet.

Questions about this item

What components are included with the L099 hub and which centre element must be purchased separately?

The package contains the carbon-steel hub with a 30 mm bore, 8 mm keyway and set-screw locking. A compatible spider — Buna-N (L099N), Urethane (L099U) or Hytrel (L099H) — is sold separately.

Which spider material should I select for the L099 hub based on the rated horsepower at 100 RPM?

At 100 RPM the Buna-N spider (L099N) delivers 0.51 hp, the Urethane spider (L099U) 0.77 hp and the Hytrel spider (L099H) 1.3 hp. Choose the material that meets or exceeds your torque requirement.

What does the 7,000 RPM maximum speed mean for continuous operation of the L099 coupling?

The 7,000 RPM limit is the mechanical ceiling for the hub and spider assembly. Operating continuously at or near this speed demands precise alignment, proper spider selection and regular inspection to avoid premature wear.

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