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Steel sprocket with black oxide finish, 20 teeth, 1 1/4 inch bore, keyway and set screws

Tritan

Tritan 40BS20H 1 1/4 in Bore Sprocket collectible

SKU CH-VD3C-E4JQ1

Finished-bore steel sprocket with keyway and two set screws for 40 chain

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Precision-machined 20-tooth profile ensures smooth 40-chain engagement
  • Black-oxide steel construction resists wear in demanding power-transmission setups
  • Fixed 1 1/4 in bore with 1/4 in keyway and two set screws locks securely to shaft
  • Compact 3.46 in outside diameter fits tight machine envelopes
  • Brand-new Tritan sprocket delivers reliable performance straight from the box

Chain-size-40 finished-bore sprocket

This TRITAN 40BS20H sprocket is a steel power-transmission component with a 1 1/4 in finished bore, keyway and two set screws. It carries 20 teeth on a 3.46 in outside diameter and a 3.196 in pitch diameter for single-strand 1/2 in pitch chain. The black-oxide finish and transparent colour coding identify it as a new replacement part for existing drives.

Maintenance teams replacing a worn 40-chain sprocket

Technicians who need a direct drop-in with the same bore, keyway and hub projection will find the fixed-bore hub and 0.716 in projection match the original specifications. Builders designing a new drive or requiring a different tooth count, bore size or multi-strand capacity must source an alternative component.

Twenty-tooth count on 40 chain

The 20-tooth configuration fixes the speed ratio and chain engagement for a given shaft speed. Confirm the driven machine requires exactly this tooth count before ordering.

How it compares

Measured against everything we stock in Fan Collectibles & Memorabilia, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 73% of the 1,367 comparable items (median $26.99).

Specifications

Product
Brand nameTRITAN
Product typeBearings, V-belts & Power Transmission Equipment
Product colorTransparent

Questions about this item

Does the 1 1/4 in bore match my existing shaft and keyway dimensions?

The sprocket has a fixed 1 1/4 in bore with a 1/4 in wide by 1/8 in deep keyway and two set screws, so it fits a shaft of that exact diameter and keyway profile.

Will the 20-tooth, 40-chain sprocket mesh with my current #40 roller chain?

Yes, it is cut for #40 chain with a 1/2 in pitch; the 20 teeth give a 3.196 in pitch diameter and 3.46 in outside diameter for correct engagement.

How can I confirm the sprocket is seated and aligned after installation?

Tighten both set screws onto the shaft key, verify the hub face runs true, then run the chain — smooth, quiet articulation with no skipping shows the 3.196 in pitch diameter is tracking correctly.

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