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Steel roller chain sprocket, black oxide finish, 20 teeth, 8.64 in diameter, 1 15/16 in bore

Tritan

Tritan 100BS20H 1 15/16 Roller Chain Sprocket collectible

SKU CH-MSHW-2E7GS

Steel roller-chain sprocket with 20 teeth, 1 15/16 in bore, keyway and set screws for 1 1/4 in pitch chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel construction resists wear in heavy-duty drives
  • 20-tooth profile matches 100-series chain for precise engagement
  • 1 15/16 in finished bore with 1/2 in keyway fits standard shafts
  • Black oxide finish adds corrosion protection in harsh environments
  • 64 in outside diameter delivers reliable power transmission

Sprocket for 1 1/4 in pitch chain

The Tritan 100BS20H is a finished-bore roller chain sprocket with 20 teeth and a 1 15/16 in bore. It is designed for single-strand number 100 chain and suits power-transmission builds that require a fixed hub on one side. The black-oxide steel body provides corrosion resistance in industrial or agricultural drivelines.

Check shaft and chain match

Verify that your shaft measures exactly 1 15/16 in and includes a 1/2 in keyway to accept the two set screws supplied. Confirm the chain in use is single-strand with a 1 1/4 in pitch so the 20-tooth profile engages correctly. The hub projects 1.371 in from the sprocket face, so ensure adjacent components allow this clearance.

Set screws and keyway included

Two set screws and a 1/2 in keyway are factory-fitted, removing the need to source separate locking hardware. The fixed bore and one-sided hub simplify alignment during installation. Black-oxide finish reduces surface oxidation without adding dimensional changes.

Highlights

  • Hardened steel construction resists wear in heavy-duty drives
  • 20-tooth profile matches 100-series chain for precise engagement
  • 1 15/16 in finished bore with 1/2 in keyway fits standard shafts
  • Black oxide finish adds corrosion protection in harsh environments
  • 64 in outside diameter delivers reliable power transmission

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What comes in the box and does it include the key and set screws?

The sprocket is supplied with two set screws and a machined 1/2 in keyway; the matching key itself is not included.

Which pitch diameter matches the 1 1/4 in chain pitch — 7.99 in or 8.64 in?

The pitch diameter is 7.99 in; the 8.64 in figure is the outside diameter.

Will the 7.99 in pitch diameter fit a 1 15/16 in shaft without modification?

Yes — the bore is finished to 1 15/16 in with a 1/2 in keyway and two set screws for direct mounting.

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