Roller chain EMMAR 20-B3

EMMAR 20-B3 is a roller chain reference, within Power transmission. Request a quote for 20-B3 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The 20-B3 chain is a European standard BS roller chain, with 1 1/4" pitch and triple strand, used to transmit power between separated shafts. Due to its robust construction, it withstands high loads and moderate speeds, and is common in continuous motion equipment. At MR Accesorios Industriales we sell it for replacement and new projects, and we advise you to choose the correct variant for your application.

This item is a roller chain from the BS series, identified as 20-B3. Its designation indicates 1 1/4" pitch and triple strand configuration. The available data from the record are: roller diameter 19.05 mm and inner width 19.56 mm. The BS series is manufactured under European standard, with plates and pins sized for heavy duty. Being triple strand, it offers greater traction capacity than a single chain of the same pitch, although it requires sprockets compatible with that configuration.

Typical applications include low speed and high torque drives, such as those found in conveyor belts, bucket elevators, mills, mixers, and process equipment. It is also used in overhead cranes, furnace drives, and agricultural or road machinery. In all cases, it is advisable to verify that the environment is not corrosive or abrasive, or to provide adequate lubrication and protection. The 20-B3 chain is a frequent option when replacing an existing chain of the same pitch and number of strands.

To install a 20-B3 chain, check shaft alignment, correct tension, and the condition of the sprockets. A new chain on worn sprockets shortens its service life, so it is advisable to evaluate tooth wear. Lubrication must be appropriate for the load and working speed. If the original drive is single or double strand, do not replace with triple without verifying the available width and the reducer capacity. The final selection is made with the pitch, number of strands, and required length in number of pitches.

If you cannot find the exact size or need an equivalent chain, send us code 20-B3 or the data of the original chain: pitch, number of strands, number of pitches or total length. A photo of the plate or sprocket also helps. With that information we look for the BS variant that best suits your equipment. If your machine uses another standard, such as ANSI, we guide you to find the equivalent without changing the sprockets if possible.

To request a quote for the 20-B3 chain or inquire about a nearby size, write to us via WhatsApp at MR Accesorios Industriales. We have more than 80 years of experience in power transmission and can help you define the correct chain for your application. Send us the code and we will reply with the technical information you need to proceed.