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Steel roller chain sprocket with black oxide finish, 23 teeth, 7/8 inch bore, keyway and set screws

Tritan

Tritan 40BS23H 7/8 in Bore Roller Chain Sprocket collectible

SKU CH-47T6-H2GTR

A 23-tooth steel roller-chain sprocket with a 7/8 in finished bore, keyway and two set screws for 1/2 in pitch chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel resists wear with black oxide finish
  • 23 teeth mesh precisely with #40 chain at 1/2 in pitch
  • 7/8 in bore includes 3/16 in keyway for positive torque transfer
  • Two set screws lock sprocket securely to shaft
  • One-sided hub keeps assembly compact at .716 in projection

Purpose-built power-transmission component

The Tritan 40BS23H is a finished-bore roller-chain sprocket engineered for single-strand 40-series chain with a 1/2 in pitch. Its 23-tooth steel body delivers a 3.94 in outside diameter and a 3.672 in pitch diameter, making it a direct fit for drives that demand precise timing and load transfer. Buyers who need a different tooth count, a larger bore or a multi-strand hub will not find those options here.

Integration requirements and space impact

The sprocket mounts on a 7/8 in shaft secured by a 3/16 in keyway and two included set screws, with a 3 in hub diameter and .716 in hub projection that define the axial envelope. Its one-side hub design keeps the chain line compact, freeing radial clearance on the opposite side for guards or adjacent components. Installers must verify shaft diameter, keyway width and available hub length before assembly.

Included hardware and finish benefits

Black-oxide coating protects the steel teeth and hub from surface corrosion in industrial environments. The two supplied set screws lock onto the keyway flats, eliminating the need to source separate fasteners. No lubrication, tensioning tools or chain links are bundled, so the maintenance planner must provide those separately.

Highlights

  • Hardened steel resists wear with black oxide finish
  • 23 teeth mesh precisely with #40 chain at 1/2 in pitch
  • 7/8 in bore includes 3/16 in keyway for positive torque transfer
  • Two set screws lock sprocket securely to shaft
  • One-sided hub keeps assembly compact at .716 in projection

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How does the 23-tooth, 40-chain sprocket behave when it runs continuously at load?

The steel body with black-oxide finish resists wear during sustained operation, and the two set screws lock the 7/8-inch bore to the shaft to prevent slippage.

What noise, heat or power characteristics appear when this sprocket runs all day?

Steel construction transmits normal chain meshing sound; black-oxide coating helps dissipate frictional heat, and no external power is required beyond the driving shaft.

What must I already have to mount this 7/8-inch bore sprocket with its 3/16-inch keyway?

A shaft measuring 7/8 inch with a matching 3/16-inch keyway slot, plus standard tools to tighten the two included set screws.

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