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Black oxide steel sprocket with 17 teeth, 1 inch bore, keyway and two set screws

Tritan

Tritan 50BS17H 17T 50 Chain 1in Bore Sprocket Collectible

SKU CH-78DX-NA2KT

Finished-bore steel sprocket with 17 teeth, 1-inch bore, keyway and set screws for 5/8-inch pitch chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision-machined 17-tooth profile ensures smooth chain engagement
  • 1 in finished bore with 1/4 in keyway fits standard shafts directly
  • Black oxide finish on steel resists corrosion in demanding environments
  • Two set screws included for secure, vibration-resistant mounting
  • 72 in outside diameter matches 50 chain pitch specifications

Industrial Sprocket for 50 Chain

The Tritan 50BS17H is a finished-bore steel sprocket built for single-strand 50 chain with a 5/8 inch pitch. It suits maintenance teams and original-equipment builders who need a direct replacement on conveyors, drives or agricultural machinery.

17 Teeth with 1 Inch Bore

Seventeen teeth on a 3.401 inch pitch diameter transmit moderate torque while the 3.72 inch outside diameter clears typical guards. The fixed 1 inch bore with a 1/4 by 1/8 inch keyway and two set screws locks securely to the shaft, but the hub projection of .657 inch limits use where longer through-bore length is required.

Keyway and Set-Screw Locking

The single specification that decides fit is the 1 inch bore with keyway and dual set screws; shafts without a matching keyway or a different diameter cannot use this sprocket without rework. Buyers who need a larger bore, a taper-lock hub or a multi-strand chain should look elsewhere.

Highlights

  • Precision-machined 17-tooth profile ensures smooth chain engagement
  • 1 in finished bore with 1/4 in keyway fits standard shafts directly
  • Black oxide finish on steel resists corrosion in demanding environments
  • Two set screws included for secure, vibration-resistant mounting
  • 72 in outside diameter matches 50 chain pitch specifications

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Will the 1 in bore and 1/4 in keyway on this 17-tooth sprocket match the shaft and key I already use on my 50 chain drive?

The sprocket has a fixed 1 in bore with a 1/4 in wide keyway cut 1/8 in deep, so it fits a 1 in shaft using a standard 1/4 in square key.

After mounting, how can I confirm the 3.72 in outside diameter and 3.401 in pitch diameter are running true on the shaft?

Rotate the assembly by hand and check for radial run-out at the tooth tips; a dial indicator should show minimal deviation from the 3.72 in OD and the 3.401 in pitch circle.

Does the box include the two set screws, or do I need to source them separately for the 1 in bore?

Two set screws are supplied with the sprocket, so no separate purchase is required for installation.

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