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Steel sprocket with black oxide finish, 18 teeth, 5/8 inch bore, keyway and set screws

Tritan

Tritan 40BS18H 5/8 in Bore Sprocket 40 Chain Size collectible

SKU CH-2GN5-7DY2W

Steel sprocket with 18 teeth for 40 chain, 5/8 in bore with keyway and set screws

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Fits 40 chain with 18-tooth precision
  • 5/8 in bore includes keyway and set screws
  • Black oxide steel resists wear in power drives
  • 14 in outside diameter matches standard spacing
  • Hub projects .716 in for compact mounting

Finished-Bore Sprocket with Keyway

The Tritan 40BS18H is a new steel sprocket finished with black-oxide coating. It is supplied as a single-strand component for 40-series roller chain and arrives ready to install with two set screws included.

18-Tooth Pitch Diameter 2.879 in

The pitch diameter of 2.879 inches and 18 teeth define the speed ratio and chain engagement for 1/2-inch pitch chain. This single dimension determines whether the sprocket matches the required drive ratio and centre-distance calculation.

Suits fixed-shaft drives needing a 5/8-inch bore

Builders assembling or repairing #40 chain drives on a 5/8-inch shaft with a 3/16-inch keyway will find the bore, keyway depth of 3/32 inch and hub projection of 0.716 inch compatible. Buyers who need a different tooth count, a larger bore or a taper-lock mounting method should look at other options.

Highlights

  • Fits 40 chain with 18-tooth precision
  • 5/8 in bore includes keyway and set screws
  • Black oxide steel resists wear in power drives
  • 14 in outside diameter matches standard spacing
  • Hub projects .716 in for compact mounting

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What does the 18-tooth count mean when the sprocket is installed on a shaft?

The 18 teeth engage a 40 chain at a 2.879 in pitch diameter, giving a fixed speed ratio relative to the driven sprocket.

How does the 1/2 in chain pitch limit the chain I can use?

It only accepts single-strand 40 chain with a 1/2 in pitch; other pitches will not mesh correctly.

What shaft size and keyway does the 5/8 in bore with 3/16 in keyway require?

It fits a 5/8 in diameter shaft and needs a 3/16 in wide by 3/32 in deep keyway slot.

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