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Black oxide steel sprocket, 40 teeth, 1 inch bore with keyway, 8.32 inch diameter

Tritan

Tritan 50BS40 Sprocket 40T 50 Chain 1in Bore Keyway collectible

SKU CH-9NKB-ZFZHX

Steel sprocket with 40 teeth for 50 chain, 1 in bore, keyway and set screws included

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • 40-tooth steel sprocket for 50 chain size
  • 1-inch finished bore with 1/4-inch keyway
  • Black oxide finish resists corrosion
  • 32-inch outside diameter for drive fit
  • Two set screws secure hub firmly

Sprocket for 50 chain and 1 inch bore

The Tritan 50BS40 is a finished-bore sprocket designed for single-strand 50 chain with a 5/8 inch pitch. It has 40 teeth and a 1 inch bore diameter with a keyway measuring 1/4 inch wide by 1/8 inch deep. Two set screws are included for secure shaft attachment.

Steel construction with black oxide finish

The sprocket body is made of steel and treated with a black oxide finish for corrosion resistance. Its outside diameter is 8.32 inches and its pitch diameter is 7.966 inches. The hub diameter is 3 1/4 inches with a hub projection of .907 inches and a length through bore of 1 1/4 inches.

Fixed hub suits single-strand drives

This fixed-hub sprocket fits drives using 50 chain on a 1 inch shaft with a standard keyway. It is not suited for multi-strand chain configurations or shafts requiring a different bore size. The transparent color noted in the data refers to the supplier listing, not the finished part.

How it compares

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

Price $84.99
Pricier than about 87% 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 do I mount the sprocket on a 1 inch shaft with the 1/4 inch keyway and 1/8 inch depth?

Slide the 1 inch bore over the shaft, align the 1/4 inch wide by 1/8 inch deep keyway with the shaft key, then tighten both included set screws against the key and shaft to secure the 40 tooth sprocket.

What wear items should I plan to replace on this steel sprocket?

The black oxide finish on the 40 teeth will wear against the 50 chain over time; replace the sprocket when tooth profiles show hooking or the 8.32 inch outside diameter drops below spec.

At what point does the 3 1/4 inch hub limit torque transmission?

The 0.907 inch hub projection and two set screws on the 1 inch bore constrain torque; sustained loads that exceed the key and screw holding power will cause slip before the steel body yields.

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