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Steel sprocket, black oxide finish, 20 teeth, 1 1/2 inch bore with keyway

Tritan

Tritan 50BS20H 50 Chain 20T 1 1/2in Bore Sprocket

SKU CH-W1JS-7EYKS

Finished-bore steel sprocket with keyway and set screws for 50 chain, 20 teeth, 1 1/2 in bore

  • Product typeBearings, V-belts & Power Transmission Equipment
  • Product colorTransparent
  • Hardened steel construction resists wear in high-load drives
  • 20-tooth profile matches 50 chain pitch for smooth engagement
  • 1 1/2-inch finished bore with keyway and two set screws ensures secure shaft mounting
  • Black oxide finish protects against corrosion in harsh environments
  • Compact 4.32-inch outside diameter fits tight machine envelopes

Industrial Power Transmission Component

This finished-bore sprocket is built for single-strand 50 chain drives in industrial machinery. It suits maintenance teams and OEMs replacing worn sprockets on conveyors, packaging lines or agricultural equipment where a 1 1/2 inch shaft is standard.

Steel Construction With Black Oxide Finish

The carbon-steel body carries a black oxide coating that resists corrosion in normal shop environments. Two set screws and a 3/8 by 3/16 inch keyway lock the hub securely to the shaft, preventing slip under load without requiring additional clamping hardware.

Direct Fit For 50 Pitch Chain

The 20-tooth profile matches 5/8 inch pitch chain exactly, giving a 3.995 inch pitch diameter and 4.32 inch outside diameter. A 3 inch hub diameter and 1 inch length through bore keep the assembly compact, while the .657 inch hub projection clears adjacent components on tight shafts.

How it compares

Measured against everything we stock in Fan Collectibles & Memorabilia, at today’s prices. Recalculated every night.

Price $29.99
Pricier than about 55% of the 1,367 comparable items (median $26.99).

Specifications

Product
Brand nameTRITAN
Product typeBearings, V-belts & Power Transmission Equipment
Product colorTransparent

Questions about this item

How do I install the 50BS20H sprocket on a 1 1/2 inch shaft and what step is often missed?

Slide the sprocket onto the shaft, align the 3/8 inch wide by 3/16 inch deep keyway with the shaft key, then tighten both included set screws against the key and shaft flat; the step often missed is securing the second set screw.

What maintenance or replacement will this sprocket need over time?

Inspect the 20 teeth for hooking or excessive wear from the 50 chain pitch; replace the sprocket when tooth profiles become pointed or chain elongation exceeds allowable limits, and periodically re-check the two set screws for tightness.

What is the first limit that appears under sustained high-speed or heavy-load operation?

The 1 inch length through bore and 3 inch hub diameter limit rigidity, so sustained heavy torque or high RPM can cause shaft deflection or hub stress before the steel teeth wear significantly.

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