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Metal jaw coupling hub with straight jaws and set screw, 3/8 inch bore

Lovejoy

Lovejoy L050 3/8 in Bore Jaw Coupling Hub

SKU CH-JT2T-NFB48

Carbon steel jaw coupling hub with 3/8 in bore, 18 000 RPM max speed and set-screw locking

  • Carbon steel hub resists wear in power transmission
  • 3/8 in bore fits standard shaft sizes directly
  • Set screw locking secures hub without extra parts
  • 18,000 RPM maximum speed handles high-speed drives
  • Compatible with L050 Buna-N, Urethane, and Hytrel spiders

Application fit

The Lovejoy L050 jaw coupling hub connects shafts in power-transmission systems where a 3/8 inch bore is required. Carbon-steel construction and a straight-jaw profile suit general-purpose machinery and light-duty equipment. Buyers needing a larger bore diameter or a different locking method will need another hub.

Sustained-load behaviour

At 100 RPM the hub transmits 0.042 hp with a Buna-N spider, 0.06 hp with a urethane spider and 0.08 hp with a Hytrel spider. The 18,000 RPM maximum speed rating applies to short bursts; continuous operation should stay well below that limit.

Thermals noise power

Carbon steel dissipates heat through the hub body during normal running. No fan or active cooling is present, so noise is limited to mesh engagement and bearing sound. Power draw follows the transmitted load and the spider material chosen.

Highlights

  • Carbon steel hub resists wear in power transmission
  • 3/8 in bore fits standard shaft sizes directly
  • Set screw locking secures hub without extra parts
  • 18,000 RPM maximum speed handles high-speed drives
  • Compatible with L050 Buna-N, Urethane, and Hytrel spiders

Specifications

No published specifications for this item yet.

Questions about this item

How much heat or noise does the L050 hub generate when running continuously at 18,000 RPM?

The hub itself has no moving internals; heat and noise come from the spider element and alignment. With a Buna-N spider it transmits 0.042 hp at 100 RPM, Urethane 0.06 hp, Hytrel 0.08 hp.

What shaft and spider must I already have to install this 3/8 in bore hub?

You need a 3/8 in round shaft and a compatible L050 centre element — part numbers L050H, L050N or L050U. The hub uses a 1/4 in.-20 UNC set screw for locking.

Will this L050 hub mate with an older L050 hub on the other side of the same spider?

Yes. Any L050 hub shares the 1 5/64 in outside diameter and 1 23/32 in overall length, so it fits the same L050H, L050N or L050U spider as legacy hubs.

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