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Dayton 3ZN58 rigid shaft coupling, carbon steel, two inch length

Dayton

Dayton 3ZN58 Rigid Shaft Coupling 2 in

SKU CH-BARR-HT2VF MPN 3ZN58

Carbon-steel rigid shaft coupling joins two 1 5/8 in and 2 5/8 in round keyed bores, rated 940 in-lb torque at 4,000 RPM

  • Product typeDrain Components
  • Carbon-steel construction handles 940 in-lb torque
  • One-piece rigid design keeps shafts aligned at 4,000 RPM
  • 2 in overall length fits compact assemblies
  • 43 in clearance diameter eases installation
  • Round keyed bores with 3/16 in keyways lock rotation

Dayton Rigid Shaft Coupling

The Dayton 3ZN58 is a one-piece carbon-steel coupling designed to join two shafts with a 2 in overall length. It suits maintenance crews and OEM assemblers who need a fixed, keyed connection for power-transmission drives up to 4 000 RPM.

Target applications and limits

This coupling serves equipment where both shafts share the same bore diameter and keyway dimensions. It will not work for installations that require different bore sizes, a split-hub design for in-place assembly, or a flexible element to absorb misalignment or vibration.

Critical specification

The maximum torque rating is 940 in-lb, which determines whether the coupling can handle the load in your drivetrain. Verify this figure against your application before purchase.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 56% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameDayton
Model name3ZN58
Product typeDrain Components

Questions about this item

Does the Dayton 3ZN58 coupling come with keys or set screws, or must they be purchased separately?

The coupling is a one-piece carbon-steel clamp with keyways machined to 1 3/16 in and 1 3/32 in depth; keys and fasteners are not included and must be sourced separately.

Which bore combination should I select for a 1 5/8 in shaft and a 2 5/8 in shaft?

This model is manufactured with a 1 5/8 in bore on one side and a 2 5/8 in bore on the other, both round and keyed, so it matches those two shaft sizes directly.

Will the 940 in-lb torque rating hold at the full 4,000 RPM limit in service?

The coupling is rated for 940 in-lb maximum torque and 4,000 RPM maximum speed; both limits apply simultaneously, so the design must stay within those values during operation.

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