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Carbon steel jaw coupling hub, 5/8 inch bore, straight jaw profile, set screw locking

Lovejoy

Lovejoy L050 Jaw Coupling Hub 5/8 in Bore Carbon Steel

SKU CH-N90M-D5D95

Jaw coupling hub with 5/8 inch bore, carbon steel construction, 18,000 RPM maximum speed and set-screw locking for power transmission applications

  • Ready for high-speed drives with 18 000 RPM rating
  • Handles up to 0.08 hp at 100 RPM with Hytrel spider
  • Carbon steel hub resists wear in power transmission
  • Set screw locking secures 5/8 in round bore shafts
  • Compatible with L050 Buna-N, Urethane and Hytrel center elements

L050 Jaw Coupling Hub 5/8 in Bore

This carbon steel hub connects rotating shafts in power transmission systems using a straight jaw profile and set screw locking. It fits a 5/8 inch round bore and operates at speeds up to 18,000 RPM. The component is designed for general industrial machinery applications requiring reliable torque transfer.

Upgrades from worn or undersized hubs

Replacing a damaged hub restores alignment and prevents vibration in existing L050 coupling assemblies. The jump is worth it when the current hub shows bore wear, keyway damage, or when switching to a 5/8 inch shaft diameter. Compatible center elements include L050H, L050N, and L050U part numbers.

Straightforward set screw installation

The hub secures to the shaft with a 1/4-20 UNC set screw, requiring only basic hand tools. Common issues include over tightening the screw which can distort the bore, or misaligning the hub during assembly which leads to premature spider wear. Ensure the shaft is clean and dimensionally accurate before mounting.

Highlights

  • Ready for high-speed drives with 18 000 RPM rating
  • Handles up to 0.08 hp at 100 RPM with Hytrel spider
  • Carbon steel hub resists wear in power transmission
  • Set screw locking secures 5/8 in round bore shafts
  • Compatible with L050 Buna-N, Urethane and Hytrel center elements

Specifications

No published specifications for this item yet.

Questions about this item

What bore diameter and set-screw thread does the L050 hub use?

The hub has a 5/8 in round bore and a 1/4-20 UNC set screw for shaft locking.

How do you install the set screw without damaging the shaft?

Align the hub, tighten the 1/4-20 UNC set screw to the recommended torque, and avoid over-tightening which can distort the bore.

Which center element part numbers fit this hub for replacement?

Compatible center elements are manufacturer part numbers L050H, L050N, and L050U.

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