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Dayton two-piece carbon steel shaft coupling with clamp finish

Dayton

Dayton 3ZN43 Rigid Shaft Coupling, 1-3/8 in Bore

SKU CH-2VBE-T2HNR MPN 3ZN43

Connects two 1-3/8 in shafts with a two-piece carbon steel clamp rated to 190 in-lb and 4,000 RPM

  • TypeDrain Components
  • Two-piece carbon-steel construction resists misalignment
  • 4,000 RPM rating suits high-speed drives
  • 190 in-lb torque capacity handles demanding loads
  • 1-3/8 in bore fits standard shafts
  • 93 in clearance keeps assembly compact

Rigid Shaft Coupling for 1-3/8 in Bore

This Dayton coupling joins two shafts that share a 1-3/8 in round bore. The two-piece carbon steel construction clamps directly onto each shaft without a keyway. Rated for 4,000 RPM and 190 in-lb of torque, it suits power-transmission tasks where precise alignment is maintained.

Two-piece carbon steel clamp design

The split body bolts around both shafts, so installation or removal does not require sliding the coupling along a shaft. A 0.93 in clearance diameter keeps the profile compact inside guards or housings. Carbon steel provides the rigidity needed for the stated speed and torque limits.

Verify shaft diameter and speed before ordering

Both shafts must measure exactly 1-3/8 in with a round bore and no keyway. The application must stay within 4,000 RPM and 190 in-lb torque. This coupling does not accommodate different bore sizes, so mismatched shafts will require a different model.

Highlights

  • Two-piece carbon-steel construction resists misalignment
  • 4,000 RPM rating suits high-speed drives
  • 190 in-lb torque capacity handles demanding loads
  • 1-3/8 in bore fits standard shafts
  • 93 in clearance keeps assembly compact

Specifications

TypeDrain Components
BrandDayton
Model3ZN43

Questions about this item

What speed does the 4,000 RPM rating cap in practice?

The coupling is rated for a maximum of 4,000 RPM, limiting rotational speed in power-transmission applications.

What shaft diameters and clearance are needed to mount the 1-3/8 in bore coupling?

Each bore accepts a 1-3/8 inch round shaft; the coupling's outside diameter is 7/8 inch and clearance diameter is 0.93 inch.

How is the two-piece carbon-steel clamp installed, and what step is often missed?

Separate the halves, slide each onto its shaft, align the bores, then tighten the clamp bolts evenly to 190 in-lb maximum torque.

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