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Black oxide steel sprocket with 19 teeth and 1 3/8 inch bore keyway

Tritan

Tritan 50BS19H 19T 1 3/8 in Bore Keyway Sprocket Collectible

SKU CH-17Q6-8DAGY

Finished-bore steel sprocket for 50 chain with 19 teeth, 1 3/8 in bore, keyway and set screws included

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel resists wear in heavy-duty drives
  • 19-tooth design matches #50 chain pitch precisely
  • 1 3/8 in finished bore with keyway fits shafts directly
  • Black oxide finish protects against corrosion
  • Two set screws lock sprocket securely in place

Finished-bore sprocket for 50 chain

The Tritan 50BS19H is a steel sprocket with a fixed 1 3/8 in bore, 19 teeth and a 5/16 in keyway cut to 5/32 in depth. Two set screws are included to lock the hub onto the shaft. It is sold new and suits maintenance crews or hobbyists restoring chain-driven equipment.

Verify bore, chain pitch and hub projection

Before ordering, confirm the shaft diameter matches the 1 3/8 in bore and the keyway dimensions suit your key stock. The chain must be 50 pitch with a 5/8 in pitch and single-strand construction. Hub projection of .657 in and hub diameter of 3 in should clear adjacent components on the machine.

Black-oxide steel under continuous drive

Black-oxide finish on the steel body resists surface corrosion during extended operation. The 3.797 in pitch diameter and 4.12 in outside diameter maintain consistent engagement with 50 chain over long runs. Fixed-bore design and dual set screws prevent axial shift when torque is sustained.

Highlights

  • Hardened steel resists wear in heavy-duty drives
  • 19-tooth design matches #50 chain pitch precisely
  • 1 3/8 in finished bore with keyway fits shafts directly
  • Black oxide finish protects against corrosion
  • Two set screws lock sprocket securely in place

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Does the 50BS19H sprocket ship with the two set screws shown in the specifications, or must they be ordered separately?

The sprocket includes two set screws as part of the finished-bore assembly, so no separate hardware purchase is required.

With 19 teeth on a 50-chain pitch, how do I know this sprocket matches my drive ratio?

The 19-tooth count on 5/8-inch pitch chain gives a 3.797-inch pitch diameter; compare that figure to your driven sprocket to confirm the speed ratio you need.

The hub projects 0.657 in beyond the sprocket face — what does that mean for shaft engagement?

The 0.657-inch hub projection provides a 1-inch length through the 1 3/8-inch bore, giving full keyway contact and two set-screw positions to lock the sprocket securely to the shaft.

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