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Steel sprocket with black oxide finish, 40 teeth, 3/4 inch bore, keyway and set screws

Tritan

Tritan 35BS40H 3/4 in Bore 40 Tooth Sprocket Collectible

SKU CH-8BKE-H8M2J

A finished-bore steel sprocket with 40 teeth, 3/4 in bore, keyway and set screws for 35 chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision 3/4 in bore fits 35 chain drives
  • 40 hardened steel teeth deliver smooth power transfer
  • Black oxide finish resists corrosion in tough environments
  • Integral keyway and two set screws lock securely to shaft
  • 99 in outside diameter suits compact machinery layouts

Tritan 35BS40H steel sprocket for 35 chain

This finished-bore sprocket fits a 3/4 inch shaft and carries 40 teeth for #35 roller chain. The black-oxide steel body includes a keyway and two set screws for positive drive. It is sold as a collectible piece of power-transmission hardware.

Upgrades worn or undersized #35 sprockets

Replaces a damaged or lower-tooth-count sprocket on the same 3/4 inch bore when the application demands the 4.78 inch pitch diameter. The jump is worth it when the existing hub profile and keyway dimensions match the 2 1/4 inch hub diameter and 3/16 inch keyway width exactly.

Handles standard #35 chain loads at this pitch

The 4.99 inch outside diameter and 1 inch length through bore give full tooth engagement for single-strand #35 chain. It runs out when the shaft size differs from 3/4 inch, when a double-strand chain is required, or when a different hub projection than 0.832 inch is specified.

Highlights

  • Precision 3/4 in bore fits 35 chain drives
  • 40 hardened steel teeth deliver smooth power transfer
  • Black oxide finish resists corrosion in tough environments
  • Integral keyway and two set screws lock securely to shaft
  • 99 in outside diameter suits compact machinery layouts

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What shaft size does the 3/4 in bore with 3/16 in keyway width fit?

The sprocket has a fixed 3/4 in bore diameter with a 3/16 in keyway width and 3/32 in keyway depth, matching a standard 3/4 in shaft with a corresponding key seat.

How do the two included set screws secure the sprocket during installation?

The two set screws tighten against the shaft; one typically seats into the keyway while the other locks on the flat, preventing rotation once the 1 in length-through-bore is positioned.

When should the black-oxide finish or 40-tooth steel sprocket be replaced?

Replace the sprocket when the 40 teeth show hooked wear, the 4.99 in outside diameter has reduced measurably, or the black-oxide coating has worn through exposing bare steel to rapid corrosion.

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