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Metal jaw coupling hub, 20 mm bore, 64 mm diameter, 73 mm length, carbon steel finish, set screw locking

Lovejoy

Lovejoy L099 20 mm Jaw Coupling Hub

SKU CH-YF6T-YXZ79

Metric jaw coupling hub with 20 mm bore, 64 mm outside diameter and 73 mm overall length for up to 7,000 RPM

  • 20 mm bore fits standard metric shafts
  • Carbon steel hub handles up to 7,000 RPM
  • Set-screw locking secures the hub without additional hardware
  • Straight jaw profile works with Buna-N, Urethane or Hytrel spiders
  • 64 mm outside diameter and 73 mm overall length suit compact installations

L099 20 mm Jaw Coupling Hub

This carbon-steel hub fits a 20 mm shaft and accepts a straight-jaw L099 spider element. It transmits torque through a set-screw locking method and a 6 mm by 2.8 mm keyway. The hub suits general industrial power-transmission tasks where metric shafting is used.

Replaces worn L099 hubs

Install this hub when an existing L099 coupling shows backlash, keyway wear or spider damage. The jump is worthwhile if the driven equipment runs continuously at speeds up to 7 000 RPM and requires the rated horsepower per 100 RPM for the chosen spider material.

Handles up to 1.3 hp at 100 RPM

With a Hytrel spider the hub delivers 1.3 hp per 100 RPM; urethane gives 0.77 hp and Buna-N gives 0.51 hp. The 64 mm outside diameter and 73 mm overall length set the spatial envelope. It cannot accommodate shafts larger than 20 mm or non-L099 centre elements.

Highlights

  • 20 mm bore fits standard metric shafts
  • Carbon steel hub handles up to 7,000 RPM
  • Set-screw locking secures the hub without additional hardware
  • Straight jaw profile works with Buna-N, Urethane or Hytrel spiders
  • 64 mm outside diameter and 73 mm overall length suit compact installations

Specifications

No published specifications for this item yet.

Questions about this item

What shaft diameter and keyway dimensions does the 20 mm bore hub accept?

The hub has a 20 mm round bore with a 6 mm keyway width and 2.8 mm keyway depth for a standard metric key.

How is the hub secured to the shaft and which step is often missed?

Two set screws lock the hub; the step often missed is tightening both screws to the recommended torque after aligning the key.

Which centre element part numbers fit this L099 hub for replacement?

Compatible centre elements are manufacturer part numbers L099H, L099N and L099U.

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