The skf group is the worlds largest manufacturer of antifriction bearings and accessories with some 100 manufacturing sites worldwide and sales companies in 70 countries. To download a pdf document of this catalogue and for information. Prefixes and suffixes provide additional information about the bearing. To facilitate international bearing interchangeability and economical. An example and the applicable options for spherical roller bearings are given below. This bearing can be used at operating temperatures from 22 to 392 degrees f. Place the bearing on the adapter sleeve, leading with the. Within each order code, a distinction is made between the basic designation and any suf. The most important codes for metric bearing series are listed in table 1. After r, the size of the bearing will be given in 116 th of an inch. Bearing numbers for tapered roller bearings inch system. The most important exceptions in the basic bearing designation system are. To understand it better, lets take an example of inch bearing.
Designation system for skf standard metric ball and roller bearings. The nmb part numbering system is composed of the part number and specification. Skf 29424 e spherical thrust bearing, straight bore, steel. Prefixes are mainly used to identify components of a bearing. Each bearing company may create their own prefixes.
How to identify bearings by bearing number calculation. Commonly, radial ball beang, automatic selfaligning ball bearing. Skf explorer, system 24 and wave are registered trademarks of the skf group. Please refer to the bearing tables for exact part number options. In a few cases the digit for the bearing type or the first digit of the dimension series identification is omitted. Thus, we can easily identify now that in case of bearing 6305zz, the first digit 6 means the bearing type is single row deep groove ball bearing. This part numbering system has become the international standard for inchsized bearings.
Other bearings can be engineered for special requirements. Nsk and rhp bearings designation systems the objective of this publication is to introduce and explain the designation systems used to identify nsk and rhp bearings. Bearing with a metal seal on one side, one side open. Suffix description interchange nsk skf torrfaf fag mrc light 72xx 72xx 72xx 72xx 72xx medium 73xx 73xx 73xx 73xx 73xx heavy 74xx 74xx 74xx 74xx 74xx 40 deg. A new inch part numbering system was developed by the american bearing manufacturers association abma to address the expansion in the number of new applications and tapered roller bearing designs. In addition to assisting in bearing identification it helps to cross refer. This alphanumeric combination denotes the type, size and structure of the bearing. Bearing numbering system is to introduce the meaning of letters with the bearings models. The example at the header shows a 6001 2rs bearing. Japanese manufacturers express the bearing number with.
Nmb bearings part numbering system national precision. Tapered roller bearings industrial bearing distributors. Remanufactured bearings by kaydon for heavy equipment. Fag bearing part number designation and suffix there are hundreds of thousands of fag bearings part numbers, they are indicating different bearing types and structures, if you want to choose a suitable bearing for your industry machines, the first step is to identify the meaning of bearing designation and suffix. Special bearings are available for the chain and mast guide, steel mill, rear wheel and pinion applications. Z term z term is normally used to indicate ball bearings with shield. Classification and characteristics of rolling bearings. This first number relates to the bearing type, as shown in the table below type 6 is a deep grooved roller bearing. Classification and characteristics of rolling bearings 1. The bearing has a maximum operating temperature of 392 degrees f.
Nomenclature guide to common bearing types for reference use only. Skf bearingpart number system nomenclature a h r international. Rs provides a better seal but more rolling friction than 2z. Iso dimensional system and bearing numbers download kbiso dimensional system. When more than one special feature is to be identified, suffixes are provided in the order shown in the table below. Skf tapered bearing sets greatly reduce friction and increase load carrying capabilities. This improved steel is so much cleaner than the highest grades covered by present classification methods. The designations of most skf rolling bearings follow a system that may consist of a basic designation with or without one or more prefixes andor suffixes basic bearing designation system. Several skf innovations are worthy of par ticular note as they offer. Improved bearing steel skf explorer bearings feature an extremely clean and homogenous steel with a minimum number of inclusions. New replacement bearings by kaydon for heavy equipment. Skf bearing designations not covered by the basic system.
Download the most recent version of adobe acrobat reader. Help the installer do the job right ensure longer bearing life help prevent premature failure. Skf ybearings insert bearings the designations for skf ybearings differ somewhat from those described in the basic designation system and are covered in the relevant product section. The abma part numbering system applies to new bearing. Dul series 719 light series 70 medium series 72 heavy series bore diameter 00 10 mm 01 12 mm 02 15 mm 03 17 mm 04 45 20 mm contact angle c 15 degree e 25 degree cb 15 degree. Bearing designation systems 7 order codes for bearings are made up of a combination of letters and numbers. Skf uses cookies on our web site to align the information shown as closely as possible to the visitors preferences and to tailor our web site user experience in general. Section bearing basics contains information that all readers should know.
Bearings designed to meet a specific customer requirement are typically designated by a drawing number. All brochure and catalog documents listed below are adobe pdfs. Skf angular contact ball bearings your key to longer. Engineering handbook 3 section i bearing symbols nonstandard variants section ii singlerow deep groove, type s singlerow maximum capacity, filling notch, type m selfaligning ball bearings doublerow angular contact, 5000 series. Rolls bearing limited offers you the latest, original, and branded superior quality of bearings from the market. The designations for certain skf bearing types are either not covered, or are only partially covered. This is true for abma bearing codes as well as the one used by skf, which is similar to the numbering system used by many other manufacturers. Technical report basic knowledge services nsk global. There fore, skf manufactures and sells a wide range of industrial seals and lubrication systems.
Skf 5307 a bearings is of excellent quality, highly durable and rust free bearing available at discounted prices. A30 boundary dimensions and bearing number codes 5. Iso9001qs9000 certification for their quality systems. See reverse side for part number information, general applica. Minebea has created its own part numbering system called the nmb part numbering system. All bearings are available in 52100 chrome steel or 440 stainless steel. International standardization of bearing numbers has been examined by iso but not adopted. The drawing number does not provide any information about the bearing. Bearing types and cages engineering 6 timken tapered roller bearing catalog singlerow bearings ts singlerow this is the basic and the most widely used type of tapered roller bearing. The designation system for tapered roller bearings is explained in the relevant product section. Hard bearing, heavyduty, reliable, strong and indestructible bearings available at exclusive rates. Bearings 101 bearing types and numbering system youtube. If we have another bearing which number is 6206 2rs, in this case bearing will have seal on both sides.
The skf bearing maintenance handbook is a comprehensive. Abma the abma code applies to ball bearings including conrad type, maximum capacity and angular contact, as well as cylindrical roller, selfaligning spherical roller, and thrust ball or roller. Bearing with rubber seal on one side, one side open. N bearing inner and outer ring narrower than standard. Skf wire race and inserted raceway bearings brochure. This bearing contains tapered rollers for its rolling element which are guided by the inner ring backface rib on the roller large end face. Skf 22211 ek explorer spherical roller bearing, tapered. This section provides general information that is valid for rolling bearings. Help the installer do the job right provides longer bearing life help prevent premature failure increase truck and trailer uptime available for all popular applications easy to use part numbering system. Skf bearing suffix identify designs or variants, which differ in some way from the original design or from the current basic design. While skf maintains its leadership as the hallmark of quality bearings throughout the world, new dimensions. Bearing numbering systembearing introductionktaiballbearing. Other skf angular contact ball bearings 46 skf the knowledge engineering company 48 the skf brand now stands for more than ever before, and means more to you as a valued customer. Fortunately, a specific bearing can be identified using a ball bearing part numbering system.
The designations of most skf rolling bearings follow a system that consists of a basic designation with or without one or more prefixes andor suffixes, as shown in the table and the examples below. Skf bearing designation nomenclature nodes bearing. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. While the concept of the ball bearing dates back at least leonardo da vinci, their design and manufacture has become remarkably sophisticated.
260 992 14 1443 1296 1337 1453 929 1515 825 1374 567 26 1417 455 232 1586 1136 1279 254 577 483 94 1413 1252 124 1203 956