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Black-oxide steel sprocket with 30 teeth, 1in bore and keyway

Tritan

Tritan 40BS30H Sprocket 30T 40 Chain 1in Bore Keyway

SKU CH-3168-JJE7P

Finished-bore steel sprocket with 30 teeth for 40 chain, 1 inch bore, keyway and two set screws included

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Ready to install with included set screws
  • 30 teeth match 40 chain pitch precisely
  • 1 inch bore with keyway prevents slip
  • Black oxide finish resists corrosion
  • Hub projects .716 inch for secure fit

TRITAN 40BS30H Sprocket 30T 40 Chain 1in Bore

This TRITAN sprocket is a finished-bore power-transmission component built for #40 roller chain. It has 30 teeth, a 1 in bore with a 1/4 in wide by 1/8 in deep keyway, and two set screws for secure shaft mounting. The steel body carries a black oxide finish and a 3 3/4 in hub diameter.

Ideal for maintenance teams

This sprocket suits anyone replacing a worn 30-tooth #40 sprocket on a 1 in shaft where a keyway and set-screw locking are required. It is not for buyers needing a different tooth count, a different chain pitch, a taper-lock bushing, or a larger bore diameter.

The 30-tooth count fixes the drive ratio

With 30 teeth on #40 chain the pitch diameter is 4.783 in and the outside diameter is 5.06 in. That tooth count alone determines the speed reduction or increase in your drive, so verify it matches the design calculation before ordering.

Highlights

  • Ready to install with included set screws
  • 30 teeth match 40 chain pitch precisely
  • 1 inch bore with keyway prevents slip
  • Black oxide finish resists corrosion
  • Hub projects .716 inch for secure fit

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How do I mount the Tritan 40BS30H sprocket on a 1 in shaft and what step is often missed?

Slide the sprocket onto the shaft, align the 1/4 in keyway with the shaft key, then tighten both included set screws against the key and shaft flat; the step often missed is securing the second set screw after the first.

What maintenance will this steel sprocket with black oxide finish need over time?

Inspect the 30 teeth for hook wear and check chain elongation regularly; re-lubricate the roller chain at the manufacturer's interval and replace the sprocket once tooth profiles show visible deformation.

At what point does the 1 in bore with 1/8 in keyway depth become the limiting factor under sustained load?

The keyway depth of 1/8 in and the two set screws transmit torque into the shaft; under sustained high torque the key or keyway will shear before the 30-tooth steel body reaches its fatigue limit.

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