How to read Link-Belt codes: designation structure, prefixes, suffixes and real examples

Link-Belt codes follow an internal logic that combines letters and numbers to identify the product type, the dimensional series and specific characteristics. Understanding this structure allows you to order the correct spare part without errors, which is key in industrial maintenance.

In this guide we explain how the designations of housings, Y bearings (inserts), spherical roller bearings, Y housings with insert and cylindrical roller bearings are composed. We use real examples from the brand so you can see the practical application.

You don't need to memorize everything: by knowing the most common prefixes and suffixes you can already interpret most of the codes you find on a nameplate or in a manual.

A typical Link-Belt code consists of an alphabetic prefix that indicates the series or product type, followed by a number that usually represents the size or shaft diameter, and sometimes a suffix that adds information about seals, fit or material.

For example, in housings of the B series, the number after the B indicates the housing size. In Y bearings, the prefix ER refers to inserts with eccentric ring, and the following number corresponds to the shaft diameter in sixteenths of an inch.

It is important not to confuse Link-Belt nomenclature with that of other brands: although some numbers match ISO designations, the prefixes and suffixes are specific to the brand.

In pillow block housings, the letter B is very common. Codes such as B22600, B22400 and B22500 correspond to split housings of the B series, where the number indicates the housing size and, therefore, the diameter of the bearing it houses.

For Y bearings (inserts), the prefix ER identifies inserts with eccentric locking ring. Codes ER27, ER23 and ER24 are examples: the number after ER is the shaft diameter in sixteenths of an inch. Thus, ER27 is for a 1 11/16 inch shaft.

In spherical roller bearings, codes can begin with standard series numbers (such as 22318) or with a U at the end, which indicates certain design characteristics. Code 6203U is an example of a spherical roller bearing with suffix U.

For Y housings with bearing insert, the prefix TU is typical. Codes TU322, TU336 and TU335 combine the housing and the insert in a single designation.

Suffixes in Link-Belt codes add critical information. For example, the letter U in spherical roller bearings can indicate a specific cage design or heat treatment. In other cases, suffixes such as 2RS (double rubber seal) or C3 (larger radial clearance) are standard in the industry and also appear in Link-Belt products.

It is essential to verify the suffix when ordering a spare part: a bearing with 2RS seal is not interchangeable with an open one, and a C3 clearance may be necessary in applications with high temperatures or interference fits.

If you have doubts about a suffix, consult the manufacturer's catalog or ask us: we help you identify the correct variant.

Let's look at some concrete examples from the brand:

• B22600: split pillow block housing, B series, size 22600. The large number indicates a housing for bearings of considerable diameter, used in heavy load applications.

• ER27: Y bearing insert with eccentric ring for 1 11/16 inch shaft. It is mounted in housings of the corresponding series.

• 22318: spherical roller bearing with 90 mm shaft diameter (series 223, size 18). It is a self-aligning bearing for combined radial and axial loads.

• TU322: Y housing with bearing insert, a complete unit ready to mount. The number 322 can indicate the size of the housing and the insert.

• 6217: single row cylindrical roller bearing, 85 mm shaft diameter (series 62, size 17). Suitable for high speeds and radial loads.

When requesting a Link-Belt part, always write down the complete code as it appears on the nameplate or on the bearing. If it is not legible, measure the shaft diameter, the outer diameter and the width, and take photos. With that data we help you identify the model.

Do not replace one code with another similar one without verifying: differences in the suffix can change the type of seal, the fit or the material, affecting the service life of the bearing.

At MR we work with the Link-Belt brand and we quote any code from the subcategories we sell: housings, Y bearings, spherical roller bearings, Y housings with insert and cylindrical roller bearings.

If you need a Link-Belt spare part, write to us via WhatsApp or email with the code, the measurement or a photo of the part. We will quote you promptly and indicate the alternative if the exact model is not available.

We are in Buenos Aires, Argentina, and we serve buyers and maintenance managers throughout the country. Our technical team advises you on selecting the right bearing or housing for your application.

Do not hesitate to ask us: interpreting Link-Belt codes is easier with expert help.