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Small black-oxide steel sprocket with 11 teeth and plain half-inch bore

Tsubaki

Tsubaki 41B11 Sprocket 41 Chain 1/2 Bore 11 Teeth collectible

SKU CH-S0BK-G4FWD

Steel 41-chain sprocket with 11 teeth, 1/2 in plain bore and black-oxide finish

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision 11-tooth engagement for 41 chain
  • Hardened 1045 steel resists wear
  • Black oxide finish protects against corrosion
  • 1/2 in plain bore with keyway for secure fit
  • Includes set screws for quick installation

Industrial Power Transmission Component

The Tsubaki 41B11 sprocket is a single-strand steel component designed for 41 chain pitch systems. It features an 11-tooth configuration with a plain 1/2 inch bore diameter and includes set screws for secure shaft mounting. The unit is finished with a black oxide coating for corrosion resistance.

Suited For Maintenance And Light Drive Systems

This sprocket fits applications requiring a 1.775 inch pitch diameter and a 7/8 inch length through bore. The 1045 steel grade provides adequate strength for standard power transmission duties. Buyers needing a different tooth count, bore size, or multi-strand compatibility should look at other options.

Includes Set Screws And Keyway Features

The package supplies set screws for immediate installation without separate hardware sourcing. A 1/8 inch wide keyway with 1/16 inch depth allows positive torque transfer when used with a keyed shaft. The 1 7/16 inch hub diameter and .648 inch projection define the mounting envelope.

Highlights

  • Precision 11-tooth engagement for 41 chain
  • Hardened 1045 steel resists wear
  • Black oxide finish protects against corrosion
  • 1/2 in plain bore with keyway for secure fit
  • Includes set screws for quick installation

Specifications

BrandTSUBAKI
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What chain size and tooth count must the drive chain have to mesh with the 41B11 sprocket?

The sprocket is cut for 41 chain size and has 11 teeth, so the mating chain must be ANSI 41 single-strand roller chain with matching 1/2 in pitch.

Will the 1/2 in plain bore with 1/8 in keyway and included set screws fit the existing shaft on my older equipment?

The bore is plain 1/2 in diameter with a 1/8 in wide by 1/16 in deep keyway, and set screws are supplied; verify your shaft diameter and key dimensions match before installation.

After mounting, how can I confirm the sprocket is running true on the shaft?

Rotate the assembly by hand and check for radial wobble at the 2 in outside diameter; a true-running sprocket shows no visible run-out and the chain engages each of the 11 teeth smoothly without skipping.

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