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Black oxide steel sprocket 30 teeth 1 1/4 inch bore keyway set screws

Tritan

Tritan 40BS30H Sprocket 30T 40 Chain 1 1/4 Bore Keyway

SKU CH-KQ65-MKXD3

A finished-bore steel sprocket with 30 teeth for #40 chain, 1 1/4 in bore with 1/4 in keyway and two set screws included

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • 30-tooth design drives 40 chain efficiently
  • 1 1/4-inch finished bore fits shafts directly
  • Keyway and two set screws lock rotation
  • Black oxide steel resists wear and corrosion
  • 06-inch outside diameter matches standard spacing

Precision Power-Transmission Sprocket

This 30-tooth steel sprocket is built for 40-series roller chain and a fixed 1 1/4-inch bore with a 1/4-inch keyway. It suits maintenance engineers and OEM assemblers who need a direct-drive component for conveyors, packaging lines or agricultural drives.

Check Bore and Chain Compatibility

Verify that the driven shaft measures exactly 1 1/4 inches and that the existing keyway slot matches the 1/8-inch depth and 1/4-inch width. Confirm the chain in use is single-strand 40 pitch so the 5.06-inch outside diameter and 4.783-inch pitch diameter engage correctly.

Heat, Noise and Power Draw

Steel construction with black-oxide finish dissipates frictional heat during continuous operation. Two set screws lock the hub securely, minimising vibration and acoustic output. The 0.716-inch hub projection keeps the rotating mass compact, reducing inertial load on the drive motor.

Highlights

  • 30-tooth design drives 40 chain efficiently
  • 1 1/4-inch finished bore fits shafts directly
  • Keyway and two set screws lock rotation
  • Black oxide steel resists wear and corrosion
  • 06-inch outside diameter matches standard spacing

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

Does the sprocket arrive with the two set screws already included, or do I need to order them separately?

The finished bore sprocket ships with two set screws in the box, so no separate fastener purchase is required for installation.

Should I select the 30-tooth version or a different tooth count for my 40 chain drive?

Choose the 30-tooth model when your design calls for a 5.06 in outside diameter and a 4.783 in pitch diameter on a single-strand 40 chain.

What does the 4.783 in pitch diameter mean once the sprocket is mounted on a 1 1/4 in shaft?

It defines the effective radius where the 40 chain engages, giving a fixed speed ratio based on 30 teeth and a 1/2 in chain pitch.

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