We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Tsubaki 40BTL20 sprocket, 20 teeth, black oxide steel, taper-lock hub

Tsubaki

Tsubaki 40BTL20 Sprocket 40 Chain 20 Teeth

SKU CH-11A6-ENNPE

Hardened carbon steel sprocket for 40 chain with 20 teeth, 1610 taper-lock bushing, 3.457 in outside diameter, black oxide finish

  • Hardened carbon steel resists wear in heavy-duty drives
  • Taper-lock 1610 bushing enables quick, secure shaft mounting
  • 20-tooth single-strand design matches #40 chain pitch precisely
  • Black-oxide finish adds corrosion resistance for harsh environments
  • 1045-grade steel construction delivers reliable strength at 3.457 in outside diameter

Tsubaki 40BTL20 Sprocket for 40 Chain

The Tsubaki 40BTL20 is a hardened carbon steel sprocket built for single-strand 40 chain drives. It features 20 teeth, a pitch diameter of 3.196 in and an outside diameter of 3.457 in. The hub type is one-side with a projection of .716 in and a length through bore of 1 in. A black oxide finish adds corrosion resistance.

Check Bushing Compatibility and Bore Size

Verify that your existing drive uses a 1610 taper-lock bushing, as this sprocket is designed specifically for that size. The maximum and minimum bore diameter is fixed at 1 5/8 in, so the shaft must match this dimension exactly. Confirm the hub diameter of 2 25/32 in clears any adjacent components on your machinery. Ensure the chain pitch is 1/2 in and the chain number is 40.

Replaces Worn 40-Chain Sprockets with 20 Teeth

This unit directly replaces a worn or damaged 40-chain sprocket carrying 20 teeth and a one-side hub. The upgrade is worth it when the existing sprocket shows tooth wear, corrosion or bore elongation that degrades drive efficiency. Material grade 1045 steel with hardened teeth extends service life compared to non-hardened alternatives. It suits maintenance on conveyors, industrial drives and agricultural equipment using single-pitch 40 chain.

Highlights

  • Hardened carbon steel resists wear in heavy-duty drives
  • Taper-lock 1610 bushing enables quick, secure shaft mounting
  • 20-tooth single-strand design matches #40 chain pitch precisely
  • Black-oxide finish adds corrosion resistance for harsh environments
  • 1045-grade steel construction delivers reliable strength at 3.457 in outside diameter

Specifications

No published specifications for this item yet.

Questions about this item

Does the Tsubaki 40BTL20 sprocket come with the 1610 taper-lock bushing included or must it be purchased separately?

The bushing is not included; the sprocket is machined for a 1610 taper-lock bushing which must be bought separately.

How do I choose between the available chain pitch and tooth-count options for this sprocket?

This model is fixed at 1/2 in pitch, chain number 40 and 20 teeth; select a different Tsubaki part number if another pitch or tooth count is required.

What does the 3.196 in pitch diameter mean when the sprocket is mounted on a shaft?

It defines the effective radius where the chain engages, so chain speed equals shaft RPM multiplied by 3.196 in divided by 2.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.