Sprocket 08A-2 (40-2) z=17 with hub

Product Description

Sprocket 08A-2 (40-2) z=17 with hub is designed for ASA 40 (08A-2) roller chain, double-strand (duplex), with a pitch of 12.7 mm (1/2"). It has 17 teeth and is made of C45 steel in accordance with ISO 606 and ANSI B29.1.

The sprocket has a one-sided hub with a diameter of 54 mm and a pilot bore of Ø14 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 35 mm.

Technical data

Applications

It works well in roller and belt conveyor drives and on packaging lines. The double-strand version carries higher loads than a single-strand one of the same pitch, so it is chosen where there is no room for a chain with a larger pitch.

Frequently asked questions

Which chain does this sprocket fit?

ASA 40-2 (08A-2) roller chain with a pitch of 12.7 mm. A duplex sprocket requires a double-strand (duplex) chain.

Does it fit 08B chain?

No. 08B chain (European standard) has the same pitch, but a different roller diameter (8.51 mm instead of 7.94 mm) and a different inner width (7.75 mm instead of 7.94 mm). The ASA 40 sprocket is designed for American-standard chain, so the two systems should not be mixed.

Is this sprocket available in another version?

Yes. Also available: Sprocket 08A-1 (40-1) z=17 with hub.

Why does the sprocket have a pilot bore and how is it machined?

The pilot bore of Ø14 mm is left on purpose so that it can be bored precisely to the machine shaft size. The sprocket is clamped in a lathe by the outer edge of the hub to avoid run-out, and the bore is usually machined to H7 tolerance. The maximum bore diameter depends on the hub diameter (54 mm).

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 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.