How to Read EMMAR Codes: Designation Structure, Prefixes, Suffixes, and Real Examples

EMMAR is a brand of own manufacture by MR Accesorios Industriales, with production in Buenos Aires, Argentina. Its line includes pulleys and roller chains, two key components in power transmission systems.

When you need to replace a pulley or a chain, the code is the key to finding the exact replacement part. Reading the designation correctly avoids ordering errors, downtime, and compatibility issues. That's why in this guide we show you how EMMAR codes are structured and what each part means.

With this information, you will be able to identify the part you need and quote it accurately by sending the code or a photo to our team.

EMMAR codes follow a clear logic: they combine letters and numbers that indicate product type, size, and specific characteristics. There is no universal standard, but within each subcategory (pulleys or chains) the nomenclature is consistent.

For pulleys, the code usually starts with the word POLEA, followed by a number indicating the pitch diameter or pulley size and then a letter and number that define the number of grooves and the type of bushing or construction.

For roller chains, the code consists of a chain pitch number (in eighths of an inch) and a letter and number indicating the chain type (single, double, etc.).

Let's take the code POLEA 50 1B as an example. The word POLEA identifies the product. The number 50 corresponds to the pitch diameter in millimeters, although in some cases it may refer to the outer diameter. The letter B indicates the type of bushing or construction (for example, tapered bushing), and the number 1 before the letter indicates the number of grooves.

Another example: POLEA 70 4B would be a pulley with a 70 mm diameter, 4 grooves, and type B bushing. And POLEA 80 3B a pulley with an 80 mm diameter, 3 grooves, and type B bushing.

It is important to always verify the actual measurements of the pulley, as the number may vary depending on the series. If you have doubts, you can send us a photo of the part and we will help you identify it.

For chains, the code is based on the chain pitch. For example, 12-C1 indicates a chain with pitch 12 (which equals 12/8 inch, i.e., 1 1/2 inch) and type C1, which is normally single chain.

The code 10-C2 would be pitch 10 (10/8 = 1 1/4 inch) and type C2, which could be double chain or with some special feature. And 08-C2 pitch 08 (08/8 = 1 inch) and type C2.

The letter C usually indicates standard roller chain, and the following number indicates the number of strands or the type of construction. It is always advisable to confirm with the catalog or consult us to ensure compatibility.

Although EMMAR does not use a wide variety of prefixes and suffixes, there are some recurring elements. For pulleys, the letter B after the number of grooves usually refers to the type of bushing (for example, standard tapered bushing). For chains, the letter C indicates roller chain and the following number indicates the number of strands.

You may find variations such as POLEA 50 1A or 12-C3, where the final letter or number changes according to the specific design. It is always advisable to verify the complete code on the part or in the equipment manual.

If you have a code that does not appear in the examples, do not hesitate to consult us. Our technical team can interpret it and offer you the correct alternative.

To make it clearer, let's review the example codes we sell:

• POLEA 50 1B: 50 mm pulley, 1 groove, type B bushing. • POLEA 70 4B: 70 mm pulley, 4 grooves, type B bushing. • POLEA 80 3B: 80 mm pulley, 3 grooves, type B bushing. • 12-C1: roller chain pitch 12, single. • 10-C2: roller chain pitch 10, double. • 08-C2: roller chain pitch 08, double.

These are just some of the 695 EMMAR products we handle. If you need another size or configuration, consult us and we will indicate the available option.

Before quoting, check the old part: the code is usually engraved on the body of the pulley or on the chain links. If it is not legible, measure the pitch diameter, groove width, or chain pitch.

You can also take a clear photo of the part and send it to us via WhatsApp or email. With that, our team can identify the model and offer you the appropriate EMMAR alternative.

Remember that we work with own manufacturing, so we can advise you on the best option for your application without compromising quality.