Sprocket 28A-1 (140-1) z=40 plate wheel

Product Description

Sprocket 28A-1 (140-1) z=40 plate wheel fits ASA 140 (28A-1) roller chain, single-strand (simplex), with a pitch of 44.45 mm (1 3/4"). It is a plate wheel without a hub, has 40 teeth and is made of C45 steel in accordance with ISO 606 and ANSI B29.1.

The plate wheel has a pilot bore. It can be bolted or welded to your own hub, flange or drum, which makes it a good choice for larger ratios and non-standard designs.

Technical data

Applications

It works well in high-power agricultural machinery, presses and feeder drives in processing plants. Plate wheels are often mounted on drums and flanges and in large reduction gears.

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.

How does the number of teeth affect the drive ratio?

The ratio is the number of teeth of the driven wheel divided by the number of teeth of the driving wheel. If this sprocket drives a wheel with twice as many teeth, the driven shaft turns twice as slowly but with roughly twice the torque.

How should sprockets be aligned during installation?

The driving and driven sprockets must lie in one plane. Alignment can be checked with a long steel straightedge placed against the sides of both wheels or with a laser alignment tool. Even a small misalignment wears the sides of the teeth and speeds up chain wear.

When does a sprocket need replacing?

It should be replaced when the teeth start to look like pointed shark fins or are clearly bent to one side. Running on such a profile quickly destroys even a new chain, so a worn sprocket must be replaced.

Can a new chain be fitted on a worn sprocket?

This should not be done. A worn sprocket has a changed tooth profile, so a new chain runs unevenly and elongates quickly. The rule is: new chain - new sprockets.

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.