Sprocket 12A-1 (ANSI 60-1) z=32 with hub, C45 steel

Product Description

Sprocket 12A-1 (ANSI 60-1) z=32 with hub, C45 steel is designed for ASA 60 (12A-1) roller chain, single-strand (simplex), with a pitch of 19.05 mm (3/4"). It has 32 teeth and is made of C45 steel in accordance with ISO 606 and ANSI B29.1.

The sprocket has a hub with a pilot bore, which is bored to the shaft size and completed with a keyway or a set screw hole.

Technical data

Applications

It is used in agricultural machinery, including seed drills, spreaders and grain conveyors.

Frequently asked questions

Which chain does this sprocket fit?

ASA 60-1 (12A-1) roller chain with a pitch of 19.05 mm. A simplex sprocket requires a single-strand (simplex) chain.

Does it fit 12B chain?

No. 12B chain (European standard) has the same pitch, but a different roller diameter (12.07 mm instead of 11.91 mm) and a different inner width (11.68 mm instead of 12.7 mm). The ASA 60 sprocket is designed for American-standard chain, so the two systems should not be mixed.

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

The pilot bore 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.

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.

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.