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Steel sprocket with black oxide finish, 21 teeth, 1 7/16 inch bore with keyway

Tritan

Tritan 60BS21H 1 7/16 Sprocket Finished Bore Keyway SS 60 Chain

SKU CH-5RYJ-ZP0AA

A steel sprocket with a finished 1 7/16 inch bore, keyway, and two set screws for 60 chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel construction resists wear in demanding power transmission
  • 21-tooth profile meshes precisely with 60 chain for smooth engagement
  • 1 7/16 inch finished bore with keyway locks securely to the shaft
  • Black oxide finish protects against corrosion in harsh environments
  • Two set screws and 3/8 inch keyway width prevent rotational slip

TRITAN 60BS21H 21-tooth sprocket

This finished-bore steel sprocket is built for 60 chain with a 3/4 inch pitch. It targets maintenance crews and OEM builders who need a direct-replacement drive component. The 1 7/16 inch bore and one-sided hub suit fixed-shaft installations.

Black oxide finish with 3/8 inch keyway

Black oxide coating adds surface protection against corrosion in industrial environments. A 3/8 inch wide by 3/16 inch deep keyway locks the sprocket to the shaft for positive torque transfer. Two included set screws provide secondary retention without extra hardware sourcing.

5.43 inch OD with .791 inch hub projection

The 5.43 inch outside diameter and 5.033 inch pitch diameter match standard 60 chain geometry. Hub projection of .791 inch and 1 1/4 inch length through bore keep the assembly compact on the shaft. Buyers needing a different bore size or multi-strand capacity must select another model.

Highlights

  • Hardened steel construction resists wear in demanding power transmission
  • 21-tooth profile meshes precisely with 60 chain for smooth engagement
  • 1 7/16 inch finished bore with keyway locks securely to the shaft
  • Black oxide finish protects against corrosion in harsh environments
  • Two set screws and 3/8 inch keyway width prevent rotational slip

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Will the 3/8 in keyway or the two set screws need periodic re-tightening on the 1 7/16 in bore?

The 3/8 in wide by 3/16 in deep keyway and two set screws are the only fastening hardware; check both after initial run-in and at regular maintenance intervals.

What dimensional limit is reached first when the sprocket runs continuously at load?

The 5.033 in pitch diameter and 5.43 in outside diameter define the chain-wrap envelope; chain elongation will exceed sprocket tooth profile before hub stress becomes critical.

How much heat does the black-oxide steel hub generate during all-day operation?

The 4 in hub diameter and 0.791 in projection act as the primary heat path; temperature rise depends on chain speed and tension rather than the sprocket alone.

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