We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Metal jaw coupling hub, straight jaw profile, carbon steel finish, 5/8 inch bore with keyway

Lovejoy

Lovejoy L07058 L-Jaw Coupling Hub 5/8 in Bore

SKU CH-GQH0-Y8VQ4

Carbon-steel jaw coupling hub with 5/8 in bore, keyway and set-screw locking for L070 series

  • Precision bore fits 5/8 in shafts securely
  • Carbon steel hub handles 14 000 RPM operation
  • Set screw locking prevents shaft slippage
  • Works with Buna-N, Urethane or Hytrel spiders
  • 1 23/64 in OD suits compact installations

Jaw Coupling Hub for L070 Systems

The Lovejoy L07058 L-Jaw coupling hub connects rotating shafts in power-transmission assemblies. It accepts a 5/8 in round bore with a 3/16 in keyway and uses a set-screw locking method. The carbon-steel hub matches L070 Buna-N, Urethane or Hytrel centre elements for light industrial drives.

Thermal and Power Behaviour

At 100 RPM the hub transmits 0.069 hp with a Buna-N spider, 0.1 hp with Urethane and 0.18 hp with Hytrel. Maximum rated speed is 14,000 RPM. The straight-jaw profile and carbon-steel construction dissipate heat through the metal body without forced cooling, so audible noise stays low in normal operation.

Build Integration

The hub measures 1 23/64 in outside diameter and 2 in overall length, fitting inside standard L070 coupling envelopes. A 3/32 in keyway depth secures the key without additional machining. Set-screw locking eliminates the need for clamp collars or shrink-fit tooling, freeing axial space on the shaft for adjacent components.

Highlights

  • Precision bore fits 5/8 in shafts securely
  • Carbon steel hub handles 14 000 RPM operation
  • Set screw locking prevents shaft slippage
  • Works with Buna-N, Urethane or Hytrel spiders
  • 1 23/64 in OD suits compact installations

Specifications

No published specifications for this item yet.

Questions about this item

How do I install the L07058 hub on a 5/8 in shaft, and what step is often missed?

Slide the hub onto the shaft, align the 3/16 in keyway with the shaft key, then tighten the set screw onto the key — not the shaft flat — to prevent slippage at 14,000 RPM.

Which wearable part will need replacement and how do I identify the correct one?

The centre spider wears first; order Lovejoy part L070H for Buna-N, L070N for Urethane or L070U for Hytrel to match the original torque rating.

At what power level does the hub hit its thermal limit during continuous running at 100 RPM?

With a Buna-N spider the limit is 0.069 hp, with Urethane 0.1 hp and with Hytrel 0.18 hp — exceeding these ratings causes overheating.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.