EMMAR 12-B3 roller chain

EMMAR 12-B3 belongs to roller chain, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 12-B3 and any equivalents.

The 12-B3 is a single-strand roller chain built to the European BS standard, with a 3/4" pitch, 12.07 mm roller diameter and 11.68 mm inner width. Maintenance and purchasing teams use it to transmit power between parallel shafts on industrial drives, whether they are replacing a worn chain or setting up a new one. MR Industrial Accessories supplies it with application support so you can confirm the size before you order.

Reading the code helps when you are matching a replacement. The 12-B3 designation identifies a BS-series chain, and the dimensions that matter for fit are the 3/4" pitch, the 12.07 mm roller diameter and the 11.68 mm inner width. These are the values that determine how the chain seats on a compatible sprocket. Because the BS standard fixes those dimensions, chains from different manufacturers that follow the same standard can be interchanged. This is a power transmission chain, not a conveyor or drag chain.

Typical installations include conveyors, mixers, mills, elevators, machine tools and process equipment. The 12-B3 also shows up on low- and medium-speed drives where a constant ratio is needed and where the distance between shafts is fixed. If the drive was originally built around a BS chain, this series is usually the straightforward replacement. It is a common sight on production lines already running 3/4" pitch sprockets.

Installation and upkeep have a direct effect on how long the chain lasts. Check that the sprockets have the correct pitch and tooth count, and that the shafts are aligned. Tension matters too: a chain that is too tight puts extra load on the rollers and bushings, while one that is too loose can jump or strike the guard. Inspect the sprockets as well, since a worn sprocket can damage a new chain shortly after startup. If anything is unclear, our team can help you select.

When you need a quote, send the complete code, the number of links, the pitch and, if possible, a photo of the old chain. That information lets us identify the right BS series and suggest compatible alternatives. We can also quote the chain with or without a joint, depending on how you plan to install it. You do not need the technical datasheet on hand; the 12-B3 code is enough for us to guide you. If you also need sprockets, lubricants or assembly tools, include them in the same inquiry.