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Black oxide steel sprocket with 18 teeth and 1 7/16 inch finished bore

Tritan

Tritan 50BS18H 1 7/16in Sprocket 18T 50 Chain

SKU CH-9C27-PK7B1

Finished-bore steel sprocket with keyway and set screws for 50 chain, 18 teeth and 1 7/16 in bore

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Ready for 50 chain with 18 teeth
  • 1 7/16 in finished bore includes keyway
  • Black oxide steel resists corrosion
  • Two set screws lock onto shaft
  • Hub diameter 2 7/8 in fits existing assemblies

Finished-Bore Sprocket for 50 Chain

The Tritan 50BS18H is a steel sprocket with an 18-tooth profile cut for 5/8-inch pitch chain. Its fixed bore measures 1 7/16 inches and comes machined with a 3/8-inch wide keyway and two set screws for positive shaft locking.

Black-Oxide Steel Under Continuous Drive

Black-oxide finish on the steel body resists surface corrosion during extended operation in exposed power-transmission setups. The one-sided hub projects .657 inches and carries a 2 7/8-inch diameter, keeping the rotating mass compact while the keyway depth of 3/16 inch maintains full key engagement under steady torque.

Single-Strand 5/8-Inch Pitch Constraint

This sprocket accepts only single-strand 50-series chain; multi-strand or smaller-pitch chain will not seat on the 3.599-inch pitch diameter. The 3.92-inch outside diameter sets the minimum guard clearance, and the 1-inch length through bore limits the usable shaft extension to that dimension.

How it compares

Measured against everything we stock in Fan Collectibles & Memorabilia, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 68% of the 1,367 comparable items (median $26.99).

Specifications

Product
Brand nameTRITAN
Product typeBearings, V-belts & Power Transmission Equipment
Product colorTransparent

Questions about this item

How much heat and noise does the steel sprocket generate when running continuously?

The steel sprocket has no moving parts of its own, so it produces no measurable heat or noise; any temperature rise or sound comes from the chain and bearings it engages with.

What shaft size and keyway must already be on the machine for this sprocket to fit?

The sprocket requires a 1 7/16 in shaft with a 3/8 in wide by 3/16 in deep keyway to match its finished bore and included set screws.

Will the 18-tooth, 5/8 in pitch sprocket work with my existing #50 chain and worn sprockets?

It matches #50 chain at 5/8 in pitch, but mixing a new 18-tooth sprocket with worn teeth can accelerate chain wear and cause uneven loading.

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