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Carbon steel jaw coupling hub L110 with 38 mm bore and keyway

Lovejoy

Lovejoy L110 38 mm Jaw Coupling Hub

SKU CH-Y5BR-XKX77

Metric jaw coupling hub with 38 mm bore, 85 mm outside diameter and 107 mm overall length, rated to 5,000 RPM with set-screw locking

  • Metric 38 mm bore fits standard shafts
  • Carbon-steel hub withstands 5 000 RPM operation
  • Buna-N spider delivers 1.3 hp at 100 RPM
  • Urethane spider provides 2 hp at 100 RPM
  • Hytrel spider handles 3.6 hp at 100 RPM

Application fit

The Lovejoy L110 jaw coupling hub fits a 38 mm round shaft with a 10 mm by 3.3 mm keyway. It is intended for maintenance engineers and OEM assemblers who need a metric straight-jaw hub rated to 5,000 rpm. Buyers requiring a different bore diameter, a taper-lock or clamping lock, or a curved-jaw profile cannot use this part.

Interface limits

The hub accepts only the L110 series centre element — part numbers L110H, L110N or L110U — which determines the torque rating. At 100 rpm the assembly transmits 1.3 hp with a Buna-N spider, 2 hp with urethane, or 3.6 hp with Hytrel. Speeds above 5,000 rpm or torques beyond the chosen spider rating exceed the design envelope.

Deciding specification

The 38 mm bore with 10 mm keyway is the single dimension that decides fit; if the driven shaft does not match this exact bore and keyway combination the hub will not install.

Highlights

  • Metric 38 mm bore fits standard shafts
  • Carbon-steel hub withstands 5 000 RPM operation
  • Buna-N spider delivers 1.3 hp at 100 RPM
  • Urethane spider provides 2 hp at 100 RPM
  • Hytrel spider handles 3.6 hp at 100 RPM

Specifications

No published specifications for this item yet.

Questions about this item

Which bore size should I select for a 38 mm shaft?

This hub is machined for a 38 mm bore with a 10 mm keyway width and 3.3 mm keyway depth, so it fits a standard 38 mm shaft directly.

What horsepower can the L110 hub transmit at 100 RPM?

With a Buna-N spider it handles 1.3 hp, with Urethane 2 hp, and with Hytrel 3.6 hp at 100 RPM.

What is the maximum operating speed for this coupling hub?

The hub is rated for 5,000 RPM; the actual limit in service will depend on the spider material and alignment.

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