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Steel roller chain sprocket, 18 teeth, 3/4 inch bore, black oxide finish

Tritan

Tritan 41BS18H 18-Tooth Chain Sprocket 3/4 in Bore Collectible

SKU CH-QFW3-HW8H3

An 18-tooth steel chain sprocket with a 3/4 inch finished bore, keyway and set screws for single-strand 41 pitch chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel resists wear with 18-tooth 41 chain pitch
  • Black oxide finish protects against corrosion in demanding environments
  • 3/4 in bore with 3/16 in keyway ensures positive drive engagement
  • Two set screws provide secure locking on driven shafts
  • 14 in outside diameter fits compact power transmission layouts

Purpose-built transmission component

This 18-tooth roller chain sprocket is designed for single-strand 41-series chain with a 1/2 inch pitch. The finished 3/4 inch bore includes a 3/16 inch keyway and two set screws for positive shaft location. Black oxide finish protects the steel body against corrosion in industrial or vintage machinery applications.

Steady-load durability

The sprocket maintains consistent engagement under continuous rotation because the 2.879 inch pitch diameter and 3.14 inch outside diameter are machined to standard 41-chain tolerances. Hardened steel teeth resist wear when the drive runs at constant speed, while the 2 3/8 inch hub diameter distributes torque evenly through the 1 inch length through bore without flex.

Straightforward shaft mounting

The fixed bore with integrated keyway eliminates the need for separate bushings or adapters; simply slide the sprocket onto a 3/4 inch keyed shaft and tighten the two included set screws. Alignment errors are the most common issue — verify that the chain runs true on the 18 teeth before final tightening to avoid premature wear or noise.

Highlights

  • Hardened steel resists wear with 18-tooth 41 chain pitch
  • Black oxide finish protects against corrosion in demanding environments
  • 3/4 in bore with 3/16 in keyway ensures positive drive engagement
  • Two set screws provide secure locking on driven shafts
  • 14 in outside diameter fits compact power transmission layouts

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How much heat does the black-oxide steel sprocket generate when it runs continuously?

The steel sprocket with black-oxide finish transfers heat through the hub; temperature rise depends on chain speed, load and lubrication rather than the sprocket itself.

What shaft and key stock must I already have to mount the 3/4 in bore with 3/16 in keyway?

You need a 3/4 in diameter shaft and a 3/16 in square key; the sprocket includes two set screws for axial locking.

Will this 18-tooth, chain-41 sprocket mesh with the 41-series roller chain I already use?

Yes — it is cut for 1/2 in pitch, single-strand 41 chain, so it matches existing 41-series chain and other 41 sprockets.

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