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Tsubaki 80B15 steel sprocket black oxide finish 15 teeth 1 inch bore

Tsubaki

Tsubaki 80B15 Sprocket 80 Chain 1 Bore 15 Teeth

SKU CH-S3W4-59GS1

Steel sprocket for single-strand 80 chain with 15 teeth, 1-inch plain bore and 5.3-inch outside diameter

  • Product typeSprockets
  • Designed for 80 chain pitch with 15 precision-machined teeth
  • 1 in plain bore includes 1/4 in keyway and set screws for secure mounting
  • 1045 steel construction with black oxide finish resists wear in power transmission
  • 3 in outside diameter and 4.81 in pitch diameter ensure accurate chain engagement
  • 1 5/8 in length through bore with 3 13/16 in hub provides rigid shaft support

Industrial Power Transmission Component

The Tsubaki 80B15 sprocket is a steel power-transmission part built for 80 chain pitch. It suits maintenance engineers and machine builders who need a durable, single-strand drive element in new condition. The 15-tooth profile mates with standard roller chain for reliable torque transfer.

Steel Construction With Plain Bore Mounting

Grade 1045 steel with a black-oxide finish resists wear in demanding environments. A 1-inch plain bore and one-sided hub allow direct shaft fitting, while the included set screws and 1/4-inch keyway secure the sprocket against rotation. Hub projection measures 0.925 inch for compact assemblies.

Ready-to-Install Hardware Included

The package supplies set screws that match the keyway depth of 1/8 inch, so no separate fastener sourcing is required. This reduces downtime during replacement or new-build installation. Buyers needing a different bore size, tooth count, or multi-strand configuration should select an alternative part number.

How it compares

Measured against everything we stock in Bearings, Belts & Drive Components, at today’s prices. Recalculated every night.

Price $42.99
Pricier than about 58% of the 693 comparable items (median $35.99).

Specifications

Product
Product typeSprockets

Questions about this item

What chain pitch and size does the 80B15 sprocket engage, and what outside diameter does that produce?

The sprocket is cut for 1 in pitch chain, chain number 80, single strand, giving an outside diameter of 5.3 in.

What bore, keyway and hub dimensions must the shaft and mounting space accommodate?

Plain 1 in bore with a 1/4 in wide by 1/8 in deep keyway, hub diameter 3 13/16 in, hub projection 0.925 in, length through bore 1 5/8 in.

How is the sprocket secured to the shaft, and what step is often missed during installation?

Two set screws lock onto the keyway; the step often missed is tightening both screws evenly after the key is fully seated.

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