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Cast iron jaw coupling hub L190 with 1-3/4 inch bore and set screw locking

Lovejoy

Lovejoy TB Woods L190134 Jaw Coupling Hub L190 1-3/4 in

SKU CH-KVD7-61K2E

Cast-iron jaw coupling hub with 1-3/4 in bore, keyway and set-screw locking, rated to 5,000 RPM and compatible with L190H, L190N and L190U centre elements

  • Cast iron hub handles 5 000 RPM for heavy-duty power transmission
  • 7 hp at 100 RPM with Buna-N spider for standard applications
  • 1 hp at 100 RPM with urethane spider for higher torque needs
  • 4 hp at 100 RPM with Hytrel spider for maximum load capacity
  • 1-3/4 in bore with 3/8 in keyway fits standard shaft dimensions

Jaw Coupling Hub L190 1-3/4 in Bore

The Lovejoy TB Woods L190134 is a cast iron jaw coupling hub designed for power transmission applications. It features a 1-3/4 inch round bore with a 3/8 inch keyway and set screw locking. The hub suits machinery requiring a straight jaw profile and L190 coupling size.

Compatible Center Elements L190H L190N L190U

This hub accepts three specific spider types that determine torque capacity and damping characteristics. A Buna-N spider delivers 2.7 hp at 100 RPM, urethane provides 4.1 hp, and Hytrel handles 7.4 hp. The choice directly changes the system vibration absorption and misalignment tolerance.

Inch Measurement 5000 RPM Maximum Speed

The hub uses inch-system dimensions with a 4 1/2 inch outside diameter and 4 7/8 inch overall length. Operation is rated up to 5,000 RPM, limiting use in higher-speed shafts. Builders needing metric bores or speeds beyond this rating must select a different coupling series.

Highlights

  • Cast iron hub handles 5 000 RPM for heavy-duty power transmission
  • 7 hp at 100 RPM with Buna-N spider for standard applications
  • 1 hp at 100 RPM with urethane spider for higher torque needs
  • 4 hp at 100 RPM with Hytrel spider for maximum load capacity
  • 1-3/4 in bore with 3/8 in keyway fits standard shaft dimensions

Specifications

No published specifications for this item yet.

Questions about this item

When should the L190H, L190N or L190U spider element be replaced?

Replace the spider when visual inspection shows cracking, chunking or loss of elasticity; the hub itself requires no scheduled maintenance beyond periodic set-screw torque checks.

What limits continuous operation at the 5,000 RPM maximum speed?

The 5,000 RPM rating is the mechanical limit; sustained operation at that speed requires the spider material to stay within its temperature range and the set screws to remain secure.

How much heat does the hub generate during all-day running at 100 RPM with a Buna-N spider?

At 100 RPM the hub transmits 2.7 hp through a Buna-N spider; heat rise depends on alignment, lubrication and ambient conditions rather than on the hub alone.

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