We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Steel sprocket, 40 teeth, black oxide finish, 3/4 inch bore with keyway

Tritan

Tritan 40BS40 X 3/4 Sprocket Finished Bore Keyway SS 40 Chain Size collectible

SKU CH-90ZX-FYFC4

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

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • 40-tooth steel sprocket drives 40 chain efficiently
  • 3/4 in finished bore with 3/16 in keyway fits shafts directly
  • Black oxide finish resists corrosion in harsh environments
  • Two set screws lock sprocket securely to shaft
  • 65 in outside diameter handles high-torque loads

Precision chain sprocket for power transmission

The Tritan 40BS40 is a finished-bore steel sprocket built for single-strand 40 chain with a 1/2 in pitch. It carries 40 teeth and a 3/4 in bore with a 3/16 in by 3/32 in keyway, plus two set screws for a fixed, non-slip fit on the shaft.

Replaces worn or undersized sprockets on existing

Swapping to this unit restores correct pitch engagement when the old sprocket shows tooth hooking or bore wear. The jump is worth it when the drive runs continuously and the black-oxide finish adds corrosion resistance that plain steel lacks.

Mounts directly on a 3/4 in shaft

The 3 1/2 in hub diameter and 0.841 in projection leave room for standard shaft spacing. The 1 1/8 in length through bore keeps the assembly compact while the fixed bore type eliminates the need for a separate bushing.

Highlights

  • 40-tooth steel sprocket drives 40 chain efficiently
  • 3/4 in finished bore with 3/16 in keyway fits shafts directly
  • Black oxide finish resists corrosion in harsh environments
  • Two set screws lock sprocket securely to shaft
  • 65 in outside diameter handles high-torque loads

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Will the 3/4 in bore with 3/16 in keyway width and 3/32 in keyway depth fit my shaft?

The sprocket has a fixed 3/4 in bore, a 3/16 in wide keyway and a 3/32 in deep keyway. Two set screws are included to lock it on the shaft.

How do I install the sprocket and which step is often missed?

Slide the sprocket onto the shaft, align the key in the 3/16 in keyway, then tighten both set screws. The step often missed is tightening the second set screw after the first.

When will the 40-tooth steel sprocket need replacement?

Replace the sprocket when the 40 teeth show hooking or the 6.65 in outside diameter wears below the chain pitch. Regular lubrication of the 1/2 in pitch chain extends life.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.