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Steel sprocket with black oxide finish, 19 teeth, 3/4 inch bore, keyway and set screws

Tritan

Tritan 40BS19H 3/4 in Bore 19 Tooth Sprocket Collectible

SKU CH-NTBT-PYYSE

A 19-tooth steel sprocket for 40 chain with a 3/4 in fixed bore, keyway and set screws

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision power transmission with 19-tooth hardened steel sprocket
  • Secure 3/4 inch fixed bore with 3/16 inch keyway for zero-slip drive
  • Corrosion-resistant black oxide finish extends service life in harsh environments
  • Ready-to-install with two set screws and 1 inch through-bore length
  • Standard #40 chain compatibility simplifies replacement and inventory management

Tritan 40BS19H Sprocket Overview

The Tritan 40BS19H is a finished-bore steel sprocket designed for 40 chain size with a 3/4 inch bore and 19 teeth. It suits maintenance teams and hobbyists replacing worn drive components on conveyors or small machinery. The black oxide finish adds corrosion resistance for industrial environments. New condition ensures full service life from installation.

Build Quality and Mounting Details

Steel construction with a one-side hub measuring 2 1/2 inches in diameter and 0.716 inch projection provides rigid power transmission. A 3/16 inch wide by 3/32 inch deep keyway plus two set screws lock the sprocket securely to the shaft. The 3.3 inch outside diameter and 3.038 inch pitch diameter match standard 40 chain geometry for smooth engagement.

Compatibility Checks Before Ordering

Verify that your shaft diameter is exactly 3/4 inch and that the keyway dimensions match the 3/16 inch width and 3/32 inch depth. Confirm the drive uses single-strand 40 chain with 1/2 inch pitch. Ensure hub projection and length through bore of 1 inch fit within your assembly spacing. Buyers needing a different bore size or chain pitch cannot use this sprocket.

Highlights

  • Precision power transmission with 19-tooth hardened steel sprocket
  • Secure 3/4 inch fixed bore with 3/16 inch keyway for zero-slip drive
  • Corrosion-resistant black oxide finish extends service life in harsh environments
  • Ready-to-install with two set screws and 1 inch through-bore length
  • Standard #40 chain compatibility simplifies replacement and inventory management

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What chain pitch does the 40BS19H sprocket use?

The sprocket is built for 1/2 in chain pitch, which is the standard for #40 roller chain.

What shaft size and keyway does the finished bore accept?

The 3/4 in fixed bore includes a 3/16 in wide by 3/32 in deep keyway and two set screws for locking.

How do I secure the sprocket on the shaft during installation?

Align the key in the 3/16 in keyway, slide the hub onto the 3/4 in shaft, then tighten both set screws against the key and shaft flats.

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