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Steel roller chain sprocket with black oxide finish, 20 teeth, 1 7/16 inch finished bore, keyway and set screws

Tritan

Tritan 40BS20H 1 7/16 in Finished Bore Sprocket

SKU CH-TBA6-S03EQ

Steel roller-chain sprocket with 20 teeth, 1 7/16 in finished bore, keyway and set screws for 40-series chain

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Finished bore with keyway enables quick installation
  • 20 teeth on 1/2 in pitch chain for smooth power transfer
  • Black oxide finish resists corrosion in demanding environments
  • 46 in outside diameter fits compact drive layouts
  • Includes two set screws for secure shaft locking

Roller Chain Sprocket 20T 1/2 in Pitch

This Tritan sprocket transfers rotary motion between parallel shafts using ANSI 40 roller chain. It has 20 teeth, a 3.46 in outside diameter and a 3.196 in pitch diameter. The hub measures 2 5/8 in diameter with a .716 in projection and 1 in length through bore. Two set screws secure the hub to the shaft.

Finished Bore 1 7/16 in with 3/8 in Keyway

The 1 7/16 in finished bore and 3/8 in keyway suit shafts machined to that exact size. Buyers whose shaft diameter differs or who require a larger bore diameter than the 1 7/16 in maximum cannot use this sprocket. It is also unsuitable for multi-strand chain drives or for chain pitches other than 1/2 in.

Black Oxide Steel Construction

The sprocket body is steel with a black oxide finish that resists corrosion in typical industrial environments. The one-sided hub design keeps the chain aligned on a single plane. No other surface treatment or material option is offered for this part.

Highlights

  • Finished bore with keyway enables quick installation
  • 20 teeth on 1/2 in pitch chain for smooth power transfer
  • Black oxide finish resists corrosion in demanding environments
  • 46 in outside diameter fits compact drive layouts
  • Includes two set screws for secure shaft locking

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Will the 1 7/16 in finished bore with 3/8 in keyway slide onto my shaft without machining?

The bore is fixed at 1 7/16 in with a 3/8 in keyway already cut; match your shaft diameter and key size exactly before ordering.

Which way does the 0.716 in hub projection face when I bolt the sprocket onto the shaft?

Hub type is one side, so the 0.716 in projection and the two set screws sit on the same face; orient that side toward the shaft shoulder.

How often should I inspect the black-oxide finish and the two set screws for wear?

Check the black oxide coating and both set screws during routine chain maintenance; retighten screws if vibration loosens them and replace the sprocket when tooth profiles show visible hooking.

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