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Steel sprocket with black oxide finish, 24 teeth, 1 1/8 inch bore with keyway

Tritan

Tritan 40BS24H 24T 40 Chain 1 1/8in Bore Keyway collectible

SKU CH-P05P-EVMPV

Steel sprocket for 40 chain with 24 teeth, 1 1/8 inch bore, keyway and set screws

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision 24-tooth profile matches #40 chain pitch
  • 1 1/8 in fixed bore with 1/4 in keyway for secure shaft fit
  • Black-oxide steel finish resists corrosion in power-transmission use
  • 1 in outside diameter suits compact drive layouts
  • Two set screws included for quick, reliable installation

Industrial Chain Sprocket

This 40-series sprocket is built for power-transmission systems that use single-strand roller chain with a 1/2-inch pitch. The 24-tooth steel body suits machinery where a fixed-bore component is preferred over a bushed or taper-lock alternative.

Bore And Keyway Constraints

The 1 1/8-inch finished bore includes a 1/4-inch wide by 1/8-inch deep keyway plus two set screws, so the shaft must match that exact diameter and key profile. No adapter or re-bore is possible because the hub is a one-side fixed design with a 3 3/4-inch diameter.

Twenty-Four Tooth Count

With 24 teeth the sprocket delivers a 3.831-inch pitch diameter and a 4.1-inch outside diameter, fixing the speed ratio and chain wrap for the drive. A different tooth count would change both diameters and the resulting ratio.

Highlights

  • Precision 24-tooth profile matches #40 chain pitch
  • 1 1/8 in fixed bore with 1/4 in keyway for secure shaft fit
  • Black-oxide steel finish resists corrosion in power-transmission use
  • 1 in outside diameter suits compact drive layouts
  • Two set screws included for quick, reliable installation

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Should I choose the 24-tooth version or a different tooth count for my 40 chain?

The 24-tooth sprocket gives a 3.831 in pitch diameter and 4.1 in outside diameter; select it when those dimensions match your drive ratio and clearance.

What does the 3.831 in pitch diameter mean once the sprocket is mounted on the shaft?

It is the effective diameter where the 40 chain engages, so chain speed equals shaft RPM multiplied by 3.831 in divided by 2.

How does the 1 1/8 in bore with 1/4 in keyway and two set screws limit installation?

It fits only a 1 1/8 in shaft, transmits torque through the 1/4 in keyway, and the two set screws lock axial position.

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