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Steel sprocket, 20 teeth, 1 inch bore, black oxide finish, keyway and set screws

Tritan

Tritan 40BS20H Sprocket 20T Chain 40 Bore 1in Keyway collectible

SKU CH-AC7B-8VK7A

A finished-bore sprocket for 40 chain with 20 teeth, 1 in bore, keyway and set screws included

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel resists wear with black oxide finish
  • 20-tooth profile matches ANSI 40 chain pitch precisely
  • 1-inch bore with 1/4-inch keyway locks to shaft securely
  • Two set screws prevent axial movement under load
  • Hub projection of .716 in fits compact drive assemblies

Sprocket for 40 chain with 20 teeth

This finished-bore sprocket is built for single-strand 40 chain and carries 20 teeth on a 3.196 in pitch diameter. It suits maintenance crews and hobbyists who need a direct replacement for worn power-transmission components. The 1 in bore includes a 1/4 in by 1/8 in keyway and two set screws for positive shaft locking. No other chain sizes or tooth counts are covered by this item.

Black-oxide steel holds up under continuous running

The steel body with black-oxide finish resists surface wear when the drive runs for extended periods rather than brief cycles. Heat and friction stay manageable because the material and coating are chosen for steady-state operation, not just peak torque. The 3.46 in outside diameter and 2 5/8 in hub diameter keep the rotating mass stable during long shifts. Lubrication intervals follow standard chain-drive practice for this pitch.

Fixed bore and set screws simplify daily alignment

The one-side hub projects 0.716 in through the bore, giving a 1 in length-through-bore that centres the sprocket without spacers. Two set screws bite into the keyway slot, so the sprocket stays timed even when vibration reverses load direction. Transparent colour coding helps visual inspection for cracks or corrosion during routine walk-rounds. Builders needing a taper-lock or QD bush will need a different hub style.

Highlights

  • Hardened steel resists wear with black oxide finish
  • 20-tooth profile matches ANSI 40 chain pitch precisely
  • 1-inch bore with 1/4-inch keyway locks to shaft securely
  • Two set screws prevent axial movement under load
  • Hub projection of .716 in fits compact drive assemblies

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How much heat or noise does the 20-tooth steel sprocket generate during continuous operation?

The sprocket itself has no moving parts that produce heat or noise; any sound or temperature rise comes from the chain and bearings it engages with.

What shaft size and key does the 1-inch bore with 1/4-inch keyway require?

It fits a 1-inch diameter shaft and a standard 1/4-inch wide by 1/8-inch deep keyway, secured by the two included set screws.

Will this 40-chain sprocket with 3.196-inch pitch diameter mesh with my existing #40 roller chain?

Yes, it is made for ANSI #40 chain with 1/2-inch pitch, so it will engage any standard #40 chain you already use.

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