Chain 28A-1 (140-1)

Product Description

Roller chain 28A-1 (140-1)

Chain 28A-1 is a simplex American chain proven in maintenance, chain number 140, pitch 44.45 mm. As a Polish manufacturer, we focus on a precise fit of the pin in the bush, so that the chain retains its original dimensions under load for a long time. In Ozdowski chains, each component is hardened separately before being assembled into a finished link - which is why their actual strength exceeds the requirements of the standard by about 20%, meaning greater durability and resistance to breaking.

Technical data

Frequently asked questions

How do you choose the correct ANSI roller chain pitch for a drive?

Three parameters determine the correct selection: pitch, inner width and roller diameter - for 28A (ANSI 140) they are 44.45 mm, 25.22 mm and 25.4 mm respectively. It is also worth considering the load, rotational speed and operating environment (dust, moisture) in order to choose the right version.

Is the 28A designation also available with a different number of strands?

Yes - we also produce the 28A chain in a duplex version; the choice of the number of strands depends primarily on the required drive strength and the space available for the sprockets.

What does the number in the American chain designation mean, e.g. 40, 50 or 60?

In the ANSI system, the chain number has a dimensional meaning: the first digits indicate the pitch expressed in eighths of an inch (e.g. "50" = 5/8 inch = 15.875 mm), and the last digit indicates the series - "0" is a standard simplex roller chain. That is why the chain number immediately tells an experienced mechanic which pitch to look for.

Why is it better to use a chain breaker rather than a hammer to separate a chain?

A chain breaker pushes the pin out axially and in a controlled manner, without the risk of deforming the side plates. Hammer blows generate uncontrolled forces that can damage the pin fit in the adjacent link.

Where is this product used?

Used in large industrial conveyors, grain elevators and in the drives of construction and mining machinery operating under high loads.

Product photos are for illustrative purposes only.