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A steel chain sprocket with black oxide finish 28 teeth 3/4 inch bore keyway set screws

Tritan

Tritan 40BS28H 40 Chain Sprocket 28T 3/4 in Bore Collectible

SKU CH-AV7G-2PMWF

A 28-tooth steel sprocket for 40 chain with a 3/4 inch bore, keyway, and set screws

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Hardened steel resists wear for long service life
  • 28 teeth match #40 chain pitch precisely
  • 3/4 in bore with keyway locks onto shaft securely
  • Black oxide finish protects against corrosion
  • Two set screws prevent sprocket slip under load

Sprocket Specifications

The Tritan 40BS28H is a finished-bore steel sprocket with 28 teeth for single-strand 40 chain. It fits a fixed 3/4 in bore and includes two set screws, a 3/16 in wide by 3/32 in deep keyway, and a black oxide finish. The hub projects 0.716 in with a 3 3/4 in diameter.

Capacity and Headroom

With a pitch diameter of 4.466 in and outside diameter of 4.74 in, this sprocket handles standard 1/2 in pitch chain loads in power transmission setups. The 1 in length through bore provides secure shaft engagement, while the fixed bore and keyway prevent rotation under torque. It runs out when applications demand a different bore size, tooth count, or multi-strand chain compatibility.

Upgrade Path

This sprocket replaces worn or damaged 40 chain sprockets with identical 28-tooth, 3/4 in bore specifications. The jump is worth it when the existing hub diameter, projection, or keyway dimensions match the 3 3/4 in hub and 0.716 in projection exactly. It does not suit drives requiring a larger bore, different tooth count, or double-strand chain configurations.

How it compares

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

Price $33.99
Pricier than about 61% 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

Will this 28-tooth, 40-chain sprocket mesh with my existing 1/2-inch pitch chain and 3/4-inch shaft?

Yes, it is built for 1/2-inch pitch single-strand 40 chain and has a fixed 3/4-inch bore with a 3/16-inch wide by 3/32-inch deep keyway plus two set screws.

How can I confirm the sprocket is seated correctly once installed?

Check that the 4.466-inch pitch diameter aligns with the chain, the 0.716-inch hub projection faces the correct direction, and both set screws lock securely on the keyway.

Does the box include the key and mounting hardware, or must I source them separately?

The package supplies two set screws; a 3/16-inch key and any shaft retaining hardware are not included.

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