Sprocket 28A-1 (140-1) z=14 with hub

Product Description

Sprocket 28A-1 (140-1) z=14 with hub fits ASA 140 (28A-1) roller chain, single-strand (simplex), with a pitch of 44.45 mm (1 3/4"). It has 14 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 found in transmissions of industrial machinery that transfer high torque.

Frequently asked questions

Which chain does this sprocket fit?

ASA 140-1 (28A-1) roller chain with a pitch of 44.45 mm. A simplex sprocket requires a single-strand (simplex) chain.

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.

How does tooth wear affect machine operation?

Worn teeth make the chain engage the sprocket unevenly and abruptly. This causes vibrations that are passed on to shafts and bearings and accelerate wear of the whole drive.

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.