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Black oxide steel sprocket with 13 teeth and 5/8 inch bore

Tritan

Tritan 40BS13H 13-tooth sprocket 5/8 in bore collectible

SKU CH-81TZ-50DDZ

A 13-tooth steel sprocket for 40 chain with a 5/8 in bore, keyway and set screws

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • 13-tooth 40-chain sprocket for precise power transmission
  • 5/8 in bore with 3/16 in keyway ensures secure shaft locking
  • Black-oxide steel resists wear in demanding applications
  • Two set screws included for fast, reliable installation
  • Compact 2.33 in outside diameter fits tight machinery spaces

Product Identity

The Tritan 40BS13H is a finished-bore steel sprocket with 13 teeth for 40 chain size. It features a 5/8 in bore with keyway and two set screws for secure shaft mounting. The black oxide finish adds corrosion resistance. This component suits maintenance teams replacing worn sprockets on conveyors or light machinery.

Fit and Exclusions

This sprocket fits single-strand 40 chain drives with a 1/2 in pitch and a 5/8 in shaft. It is not for multi-strand setups, different chain pitches, or shafts needing a larger bore. Buyers needing a different tooth count or hub style must select another part.

Deciding Specification

The 13-tooth count sets the pitch diameter at 2.089 in and the outside diameter at 2.33 in, which fixes the speed ratio and chain wrap. Verify these dimensions against your drive layout before ordering.

Highlights

  • 13-tooth 40-chain sprocket for precise power transmission
  • 5/8 in bore with 3/16 in keyway ensures secure shaft locking
  • Black-oxide steel resists wear in demanding applications
  • Two set screws included for fast, reliable installation
  • Compact 2.33 in outside diameter fits tight machinery spaces

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How do I fit the 5/8 in bore sprocket onto the shaft and what step is often missed?

Slide the 5/8 in bore onto the shaft, align the 3/16 in keyway with the shaft key, then tighten both included set screws against the key and shaft flat — skipping the second screw lets the hub walk loose.

What part of this sprocket will wear first and need replacement?

The 13 hardened steel teeth meshing with 40 chain take the load; expect to replace the sprocket when tooth profiles hook or the 2.089 in pitch diameter stretches beyond chain tolerance.

What limit appears first when this sprocket runs continuously at speed?

The 0.591 in hub projection and 7/8 in length through bore concentrate heat in a short bearing span, so bearing temperature rise is the first sustained-use limit.

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