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Steel sprocket with black oxide finish, 12 teeth, 5/8 inch bore with keyway

Tritan

Tritan 40BS12H 5/8 Sprocket Finished Bore Keyway SS 40 Chain

SKU CH-NVF1-8ZFXY

A 12-tooth steel sprocket with a 5/8 in finished bore, keyway, and set screws for 40 chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • 12-tooth design matches #40 chain pitch precisely
  • 5/8 in finished bore with 3/16 in keyway installs without machining
  • Black-oxide steel resists wear in power-transmission drives
  • Two set screws lock sprocket firmly to the shaft
  • Hub projection .591 in keeps assembly compact

Sprocket for 40 Chain Size

This TRITAN sprocket is a finished-bore component with a 5/8 in bore diameter and an integrated keyway. It suits maintenance engineers and machinery builders who need a single-strand drive element for 1/2 in pitch chain.

Check shaft and key dimensions

Verify that the driven shaft measures 5/8 in and accepts a 3/16 in wide by 3/32 in deep keyway. Ensure the hub projection of .591 in and length through bore of 7/8 in fit the available axial space on the assembly.

Steel construction with black oxide finish

The steel body and black oxide coating resist wear in power-transmission applications. Two set screws lock the sprocket to the shaft, while the one-sided hub and 1 9/16 in hub diameter keep the 12-tooth profile running true.

Highlights

  • 12-tooth design matches #40 chain pitch precisely
  • 5/8 in finished bore with 3/16 in keyway installs without machining
  • Black-oxide steel resists wear in power-transmission drives
  • Two set screws lock sprocket firmly to the shaft
  • Hub projection .591 in keeps assembly compact

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Does the TRITAN 40BS12H sprocket come with the set screws and keyway already machined, or must they be purchased separately?

The sprocket includes two set screws and a finished bore with a 3/16 in wide by 3/32 in deep keyway already machined, so no separate purchase is needed.

How do I decide between the 12-tooth 40 chain sprocket and other tooth counts for my drive?

Choose the 12-tooth version when your design requires a 1.932 in pitch diameter and 2.17 in outside diameter; other tooth counts will change both diameters and the speed ratio.

What does the 1/2 in chain pitch mean when the sprocket is mounted on a 5/8 in shaft?

It means the sprocket meshes with ANSI 40 roller chain (1/2 in pitch) while the 5/8 in finished bore with keyway locks onto the shaft, transmitting torque through the key and set screws.

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