Sprocket 20B-3 z=15 with hub

Product Description

Sprocket 20B-3 z=15, with hub

Sprocket 20B-3 (pitch 1 1/4" - 31.75 mm), triplex (three-strand), 15 teeth, with hub. Manufactured in accordance with DIN 8187 / ISO 606 from C45E structural steel (EN 10083-1), without tooth hardening - as a Polish manufacturer, Ozdowski supplies an economical version that is fully dimensionally interchangeable with the hardened variant of the same pitch.

Technical data

Frequently asked questions

How does one duplex sprocket differ from two independent simplex sprockets on a common shaft?

A duplex sprocket is a single, monolithic toothed rim serving a duplex chain, in which both strands are mechanically integrated in one component. Two independent simplex sprockets on a common shaft serve two completely separate simplex chains - these solutions are not interchangeable without changing the chain type.

Do a newly fitted chain and sprocket require running-in after installation?

After installation, it is worth running the drive for a while without full load, observing the smoothness of operation and the bearing temperature - this allows installation errors (e.g. misalignment) to be detected before full load is applied. The tooth profile of the sprocket itself does not require running-in if the sprocket and chain have matching pitch and are made in accordance with the standard.

Is a sprocket with hub suitable for reversing drives (with a change of rotation direction)?

Yes, the tooth geometry of a sprocket is symmetrical and has no preferred direction of operation, so the sprocket can be used in drives that change direction of rotation. In such systems, correct chain tension on both sides is particularly important, because when reversing, each side alternately becomes the working side.

What does uneven, one-sided wear of the sprocket teeth indicate?

This usually indicates misalignment between the driving and driven sprockets or that the chain is skewed relative to the sprocket. It is worth checking the alignment of both sprockets and the condition of the shaft bearings - over time, one-sided wear causes the chain to jump off the tooth.

Where is this product used?

Applications include drives in the food industry, packaging machines, sorting lines and agricultural harvesting machines, where the sprocket operates seasonally but under full load.

When placing your order, please check the current stock level of this gear - the lead time depends on it and is clearly stated according to the quantity available in the given warehouse.

Product photos are for illustrative purposes only.