Zzpressed steel shieldsnonremovable, z is single shield. Search in skf precision bearings catalogs and technical brochures on directindustry and find the information you need in 1 click. The bearings have particularly small axial section height, have high load carrying capacity and high rigidity and can support axial forces in one direction. Nmb bearings part numbering system national precision. The unused stock of old tr5 receipts remaining as on this date will be destroyed and appropriate entries made in the stock register. How to identify bearings by bearing number calculation. The objective of this publication is to introduce and explain the designation systems used to identify nsk and rhp bearings. In a few cases the digit for the bearing type or the first digit of the dimension series identification is omitted. A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. Skf bearing designations not covered by the basic system. Iso dimensional system and bearing numbers download kb iso dimensional system. Zzssteel shields with snap ring ttsteflon seals with snap ring.
Bearing numbering system is to introduce the meaning of letters with the bearings models. Part numbering system ball bearings grease caps, cam. Special bearings are available for the chain and mast guide, steel mill, rear wheel and pinion applications. Technical report basic knowledge services nsk global. Minebea has created its own part numbering system called the nmb part numbering system. Classification and characteristics of rolling bearings. Each bearing listing includes the appropriate dimensions. Skf explorer, system 24 and wave are registered trademarks of the skf group. Asts engineers and sales reps are experts with all numbering systems and can assist you with breaking down any bearing part number.
Bearing numbering systembearing introductionktaiballbearing. Bearing numbers of standard bearings corresponding to jis b 1512 rolling bearing boundary dimensions are prescribed in jis b 15. This numbering system uses three alphanumeric fields to define a dimension series. Trent is a bleedless design, with shaft power offtakes from the ip shaft.
Bearing numbers and types explained engineer student. Grease replenishing system for highspeed spindles finelub ii. Finally, the catalog presents extensive tables containing most bearing numbers and showing dimensions and pertinent design data listed in the order of increasing bore size. Each tapered roller bearing contains four interdependent components. Tapered angles allow our bearings to efficiently control a combination of radial and thrust loads. Bearings of the rollsroyce trent engine are shown in figure 2. B2011 bearings and related products for continuous casting machines catalog. The jis numbering system is based on the system defined in the jis15. Iso9001qs9000 certification for their quality systems. The designations for certain skf bearing types are either not covered, or are only partially covered. All skf precision bearings catalogs and technical brochures. A rolling bearings major dimensions, known as boundary dimensions.
Bearings 101 bearing types and numbering system youtube. Iso 355 part numbering iso introduced a new numbering. 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. As well as these bearing numbers, jtekt uses supplementary codes other than those provided by jis. Roller bearings i n t rod u c t ion ball bearings sph erical roller bearings t a p ered roller bearings t h r u s t bearings sp li t p illo w bloc k s s u p er p recision bearings rolling m ill bearings l inear m o t ion e ngineering s ec t ion 6 table of contents ball bearings introduction about nsk ball bearings. Home ball bearings roller bearings linear components. Series of a bearing denotes the toughness of the bearing. Interchanging bearing numbers between different numbering systems requires attention to detail and full knowledge of the codes that define the specifications. Classification and characteristics of rolling bearings 1. This is possible because bearing tolerances are standardized internationally, predominantly by iso. A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications. Existing part numbers according to the original system, new part numbers that are added to the existing series and proprietary part numbers of special bearings continue to be used. Radial ball bearing nomenclature and numbering system. Nskhps high performance standard bearings for industrial machinery.
Other bearings can be engineered for special requirements. Skf y bearings insert bearings the designations for skf y bearings differ somewhat from those described in the basic designation system and are covered in the relevant product section. Bearings in this catalog are arranged by bearing type, with a size andor numerical listing. The most important exceptions in the basic bearing designation system are. This second number relates the bearing series, which reflects the robustness of the bearing. Bearings with a bore diameter of 10, 12, 15 or 17 mm have the following size code identifications.
B10011 high performance series for steelmaking and rolling equipment catalog. Bearing number starts with 4 bearing number starts with 4, indicates deep grove double row ball bearings. The nmb part numbering system is composed of the part number and specification. If the specific bearing type is not known, reference the index in the back of the guide for the page number where the bearing is listed.
The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis. To download a pdf document of this catalogue and for information. Super precision sealed angular contact ball bearings. In numbering the bearings, it is considered as one bearing. Abis miniature and precision ball bearings with bores of 0. Bearing number basic bearing knowledge koyo bearings. The boundary dimensions of rolling bearings, namely, bore diameter, outside. Skf bearing designation nomenclature nodes bearing. Bearing numbers for tapered roller bearings inch system bearing numbers for miniature ball bearings. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. The bearing part number is defined by adding the inner ring bore diameter.
This part numbering system has become the international standard for inchsized bearings. The bearing rings themselves usually only feature the basic designation and some supplementary designations, such as radial clearance and accuracy. A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications including bearing type, boundary dimensions, running accuracy, and internal clearance. The abma part numbering system applies to new bearing seriesonly. Bearing number basic bearing knowledge koyo bearings jtekt.
Such bearings are usually used for bearing high axial load and radial load also. Bates numbering in pdf documents introduction bates numbering is a method of indexing legal documents for easy identification and retrieval. To facilitate international bearing interchangeability and economical bearing production, bearing boundary dimensions have been standardized by the international standards. Thus, we can identify now that in case of bearing 6305zz, the second digit 3 means the bearing is of medium toughness. Bearings catalogs and cad drawings services nsk global. As you go up the scale below from 9 to 4 the inner and outer race thickness will usually increase along with the ball size, this will be to help. Nomenclature guide to common bearing types for reference use only.
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