Sprocket 08A-2 (ANSI 40-2) z=18 with hub, C45 steel

Product Description

Sprocket 08A-2 (ANSI 40-2) z=18 with hub, C45 steel fits ASA 40 (08A-2) roller chain, double-strand (duplex), with a pitch of 12.7 mm (1/2"). It has 18 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 58 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 is used in agricultural machinery, including seed drills, spreaders and grain conveyors. 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.

What causes wear on the sides of the teeth?

Most often misaligned sprockets. The chain does not run straight and its plates rub against the sides of the teeth. In this case the sprockets must be realigned in one plane.

How do I check sprocket run-out after installation?

A dial indicator on a magnetic stand is used. Place the tip against the rim or side of the sprocket and turn the shaft, reading the deviations. Excessive run-out usually means a crooked bore or a damaged shaft.

How should a sprocket be protected before a longer machine standstill?

After cleaning with a brush and technical cleaner, coat the whole surface of the sprocket with preservative grease or thick spray oil that displaces moisture. This protects the C45 steel against corrosion during downtime, for example out of season.

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.