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Dayton L070 sintered iron jaw coupling hub with 5/8 in bore

Dayton

Dayton 29HY78 Jaw Coupling Hub L070 Sintered Iron 5/8 in Bore

SKU CH-RNCW-GBEWH

Shaft coupler hub with 5/8 inch bore, keyway and set-screw locking for L070 jaw couplings

  • Sintered iron hub handles up to 14,000 RPM for high-speed drives
  • 5/8 in bore with 3/16 in keyway fits standard shafts securely
  • Set-screw locking provides quick installation without special tools
  • Three spider options deliver 0.069 to 0.18 hp at 100 RPM for flexible torque
  • Compatible with L70H, L70N and L70U centre elements for easy replacement

Dayton 29HY78 Jaw Coupling Hub

The Dayton 29HY78 is a sintered iron jaw coupling hub sized L070 with a 5/8 inch round bore and keyway. It uses a set screw locking method and straight jaw profile for direct shaft connection in power transmission systems.

Replaces worn L070 hubs

Install this hub when an existing L070 body shows wear or when the application requires the 1 23/64 inch outside diameter and 2 inch overall length. The jump is worth it when the drivetrain demands the listed horsepower ratings at 100 RPM with compatible Buna-N, Urethane or Hytrel center elements.

Sustained load behaviour up to 14,000 RPM

At continuous speeds up to 14,000 RPM the sintered iron hub maintains dimensional stability while the set screw holds the bore securely. Horsepower capacity varies by spider material: 0.069 hp with Buna-N, 0.10 hp with Urethane and 0.18 hp with Hytrel at 100 RPM reference speed.

Highlights

  • Sintered iron hub handles up to 14,000 RPM for high-speed drives
  • 5/8 in bore with 3/16 in keyway fits standard shafts securely
  • Set-screw locking provides quick installation without special tools
  • Three spider options deliver 0.069 to 0.18 hp at 100 RPM for flexible torque
  • Compatible with L70H, L70N and L70U centre elements for easy replacement

Specifications

No published specifications for this item yet.

Questions about this item

What shaft diameter and keyway dimensions does the L070 hub accept?

The hub has a 5/8 in round bore with a 3/16 in wide by 3/32 in deep keyway.

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 the second screw after the first seats the key.

Which centre element part numbers are compatible for future replacement?

Compatible spiders are L70H for Buna-N, L70N for Urethane and L70U for Hytrel.

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