Sprocket 081-1 (1/2") z=11 with hub, C45 steel

Product Description

Sprocket 081-1 (1/2") z=11 with hub, C45 steel fits 081-1 roller chain (European standard DIN 8187 / ISO 606), single-strand (simplex), with a pitch of 12.7 mm (1/2"). It has 11 teeth and is made of C45 steel.

The sprocket has a one-sided hub with a diameter of 31 mm and a pilot bore of Ø8 mm, which is bored to the shaft size and completed with a keyway or a set screw hole. The total width of the sprocket is 16 mm.

Technical data

Applications

It works in small chain transmissions, feeders and traverse mechanisms where a compact design matters.

Frequently asked questions

Which chain does the 081-1 z=11 sprocket fit?

081-1 roller chain to European standard DIN 8187 / ISO 606, with a pitch of 12.7 mm. A simplex sprocket requires a single-strand (simplex) chain.

What is the difference between the 081-1 sprocket and the 08B-1 sprocket if they have the same pitch?

Both sprockets have a pitch of 12.7 mm (1/2"), but they are designed for different chains. The 081-1 chain has an inner width of 3.3 mm and a roller diameter of 7.75 mm, while the 08B-1 chain has an inner width of 7.75 mm and a roller diameter of 8.51 mm. That is why the 081-1 sprocket has a narrower toothed rim (3 mm instead of 7.2 mm) and should not be used with 08B-1 chain, nor should these series be interchanged.

How is a keyway cut in the hub?

The keyway is made to DIN 6885, keeping it aligned and with the correct width and depth so that the key sits firmly. The key should fit accurately - play in the keyway accelerates wear and, under shock loads, can lead to the key shearing off.

What is the set screw hole in the hub for?

The threaded hole, usually made above the keyway or at 90° to it, takes a headless set screw. It prevents the sprocket from sliding along the shaft when the machine vibrates.

Can a sprocket with hub be welded to the shaft?

Technically it is possible, but we do not recommend it. Welding overheats the material, can bend the shaft and damage nearby bearings, and makes later replacement of a worn sprocket very difficult. It is better to fix the sprocket with a key.

What does the lead time depend on?

When ordering, please check the current stock level of this sprocket - the lead time depends on it and is clearly stated according to the quantity available in each warehouse. The stock level is shown above the product price and may vary depending on the warehouse.

Product photos are for illustration purposes only.