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Steel sprocket, black oxide finish, 28 teeth, 4.74 in OD, SH bushing type

Tsubaki

Tsubaki 40SH28 Sprocket 40 Chain 28 Teeth

SKU CH-8A87-FY4P3

Steel sprocket for 40 chain with 28 teeth, 4.74 in outside diameter, 4.466 in pitch diameter, black oxide finish, 1045 grade, corrosion resistant

  • Fits 40 chain pitch with 28 teeth for precise drive engagement
  • Quick-detachable SH bushing enables fast installation and removal
  • 1045 steel construction with black oxide finish resists corrosion
  • 74 in outside diameter matches standard 40 chain geometry
  • 13/16 in length through bore ensures secure hub fit

Tsubaki 40SH28 Sprocket 40 Chain 28 Teeth

This steel sprocket is built for single-strand roller chain drives using 40 chain size with a 1/2 in pitch. It suits maintenance engineers and machine builders who need a corrosion-resistant component for power transmission assemblies. The black oxide finish on grade 1045 steel protects against wear in industrial environments. It fits SH quick-detachable bushings for straightforward mounting and removal.

Capacity and headroom: 28 teeth on 40 chain

With 28 teeth the sprocket delivers a 4.466 in pitch diameter and 4.74 in outside diameter, providing reliable engagement for moderate speed and torque loads. The single-strand design limits capacity to one chain line, so multi-strand drives require a different sprocket. Maximum bore of 1 5/8 in sets the upper shaft size, while the 1 11/16 in minimum bore restricts use on smaller shafts. Hub projection of .529 in and 13/16 in length through bore define the axial space needed.

SH quick-detachable bushing compatibility

The hub is machined for SH bushings, letting mechanics swap sprockets without pulling the shaft or driven equipment. This reduces downtime during ratio changes or routine wear replacement. One-sided hub configuration means the sprocket mounts flush on the bushing flange, simplifying alignment. No additional hardware or software is bundled; the sprocket ships ready for the user's chosen SH bushing and chain.

Highlights

  • Fits 40 chain pitch with 28 teeth for precise drive engagement
  • Quick-detachable SH bushing enables fast installation and removal
  • 1045 steel construction with black oxide finish resists corrosion
  • 74 in outside diameter matches standard 40 chain geometry
  • 13/16 in length through bore ensures secure hub fit

Specifications

No published specifications for this item yet.

Questions about this item

Will the 40SH28 sprocket fit on my existing SH-series quick-detachable bushing?

Yes, the sprocket is machined for SH bushing size and quick-detachable type, so it mounts directly on any compatible SH bushing you already use.

How can I confirm the 28-tooth sprocket is seated correctly after installation?

Verify that the hub projection of 0.529 in and length through bore of 13/16 in sit flush against the bushing face, and that the chain engages the 4.466 in pitch diameter without lateral wobble.

Does the box include the SH bushing and chain, or must I purchase them separately?

Only the steel sprocket with black-oxide finish is supplied; the SH quick-detachable bushing and 40-chain must be bought separately.

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