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Black oxide steel sprocket, 25 teeth, 8.52 in diameter, 1.175 in hub projection

Tritan

Tritan 80BS25 80 Chain Sprocket 25 Teeth Collectible

SKU CH-1YTY-BD27M

Steel sprocket for 80 chain with 25 teeth, 8.52 in outside diameter, 1 7/8 in bore, keyway and set screws included

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precise power transfer with 25-tooth 80-chain engagement
  • Accurate rotational alignment from 7.979 in pitch diameter
  • Secure shaft locking via 1/2 in keyway and dual set screws
  • Corrosion-resistant performance with black oxide steel finish
  • Compact drivetrain fit using 1.175 in hub projection

Industrial Chain Sprocket

The Tritan 80BS25 is a finished-bore steel sprocket built for 80 chain pitch. It carries 25 teeth on a 7.979 in pitch diameter and an 8.52 in outside diameter, with a fixed 1 7/8 in bore that includes a 1/2 in keyway and two set screws.

Maintenance and OEM Fit

It suits maintenance teams and OEM assemblers who need a direct replacement for single-strand 80 chain drives with a 1 7/8 in shaft. Buyers needing a different bore size, multi-strand hub or split-taper bushing should look elsewhere.

Load Capacity and Limits

The 25-tooth steel body and 4 1/4 in hub diameter handle typical 80 chain power transmission loads, while the 1.175 in hub projection keeps the assembly compact. Beyond the rated chain speed or shock-load envelope the fixed bore and keyway become the limiting factors.

Highlights

  • Precise power transfer with 25-tooth 80-chain engagement
  • Accurate rotational alignment from 7.979 in pitch diameter
  • Secure shaft locking via 1/2 in keyway and dual set screws
  • Corrosion-resistant performance with black oxide steel finish
  • Compact drivetrain fit using 1.175 in hub projection

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What chain pitch and roller-chain size must I already have for the 25-tooth sprocket to mesh correctly?

You need a single-strand ANSI 80 chain with a 1-inch pitch; the sprocket is cut for that exact pitch and chain number.

Will the 1 7/8-inch finished bore with 1/2-inch keyway and two set screws fit the shaft on my existing drive?

The bore is fixed at 1 7/8 in with a 1/2-in wide by 1/4-in deep keyway and two set screws, so it matches shafts made to those dimensions.

After installation, how can I confirm the 8.52-inch outside diameter sprocket is running true?

Rotate the shaft by hand and check for wobble at the 8.52-in outside diameter; the teeth should engage the 80 chain smoothly without binding or noise.

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