Sprocket 12A-1 (60-1) z=20 with hub

Product Description

Sprocket 12A-1 (60-1) z=20 with hub works with ASA 60 (12A-1) roller chain, single-strand (simplex), with a pitch of 19.05 mm (3/4"). It has 20 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 80 mm and a pilot bore of Ø16 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 suits drives of mixers, screw feeders and equipment built to American standards.

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.

Is this sprocket available in another version?

Yes. Also available: Sprocket 12A-2 (60-2) z=20 with hub.

How do I check the pitch of a sprocket?

The sprocket pitch matches the chain pitch - it is the distance between the centres of adjacent teeth measured on the pitch circle. The easiest way to check it is to place a section of matching chain on the sprocket: it should sit on the teeth without tension. This sprocket has a pitch of 19.05 mm (3/4").

How is the pitch diameter of a sprocket calculated?

The pitch diameter Dp is the circle along which the chain rollers travel. It is calculated with the formula: pitch divided by the sine of (180° / number of teeth). For this sprocket it is 121.78 mm, and the outside diameter De is 131.67 mm.

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.