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Black oxide steel sprocket with 18 teeth, 7/8 inch bore, keyway and two set screws

Tritan

Tritan 40BS18H 18-Tooth Sprocket 7/8" Bore Keyway 40 Chain

SKU CH-VAMS-P2E75

An 18-tooth steel sprocket with a 7/8-inch bore, keyway, and set screws for 40 chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Hardened steel resists wear on high-load drives
  • 18 teeth mesh smoothly with 40 chain pitch
  • 7/8 in bore with 3/16 in keyway locks to shaft
  • Black oxide finish protects against corrosion
  • Two set screws secure sprocket against axial slip

Finished-Bore Sprocket with Keyway

This TRITAN sprocket arrives new and ready to install on a 7/8-inch shaft. It fits single-strand 40 chain and includes two set screws that lock onto the machined keyway. The fixed-bore design eliminates the need for a separate bushing.

18-Tooth Pitch Diameter 2.879 in

The 18-tooth profile yields a 2.879-inch pitch diameter that directly sets the drive ratio and chain speed. Selecting this tooth count determines whether the sprocket matches the required centre distance and torque transmission for the application.

3.14 in Outside Diameter Hub 2 5/16 in

The 3.14-inch outside diameter and 2 5/16-inch hub provide full tooth engagement and shaft support for 40 chain loads. A 1-inch length through bore and 0.716-inch hub projection limit how far the sprocket can sit on shafts that need longer bearing surfaces.

Highlights

  • Hardened steel resists wear on high-load drives
  • 18 teeth mesh smoothly with 40 chain pitch
  • 7/8 in bore with 3/16 in keyway locks to shaft
  • Black oxide finish protects against corrosion
  • Two set screws secure sprocket against axial slip

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How does the 3.14 in outside diameter affect clearance inside a machine?

The 3.14 in outside diameter sets the space the sprocket needs radially; allow extra room for chain wrap and guard clearance when laying out shafts.

What does the 1/2 in chain pitch limit in a drive system?

The 1/2 in pitch matches ANSI 40 chain and fixes the tooth spacing; it determines the minimum centre distance and the speed ratio you can achieve with a given tooth count.

Will the 7/8 in bore with 3/16 in keyway fit my shaft without machining?

Yes, the bore is finished to 7/8 in with a 3/16 in wide by 3/32 in deep keyway and two set screws, so it slides onto a standard 7/8 in keyed shaft ready to run.

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