Therefore, the additional designation is mostly put after the basic bearing designation. The bearing designation can be typed in the search box with the starts with or contains or ends with option. Every bearing consist these type of numbers printed on them these represents. The new part number is divided into 5 alphanumeric sections. Bearing for wind turbine main shafts with rollerguided cast iron cage. How the designation system works bearing types radial bearings, width b, t thrust bearing, height h outside diameter d bearing size d5 30 mm bore diameter. Afbma regular designation designation deep groove ball bearings. That includes installation, lubrication, and maintenance. S with miniature bearings, for instance s 608 and ss or x with standardsized bearing, for instance ss 6204. Section bearing basics contains information that all readers should know. C3 afbma internal radial clearancel19 mobil 28 grease, milg822. The designation for the nsk bearing bore indicates the bearings bore size.
International standardization of bearing numbers has been examined by iso but not adopted. Needle roller bearing with annular groove and lubrication holes in outer ring. The example at the header shows a 6001 2rs bearing. I am working for a reputed and quality brand organization, i am much interested to write and discuss engineering articles and hence i always spends my spare time in writing engineering article. Radialball bearings will accommodate moderate to heavy radial loads and low to moderate. Table 1 shows the bearing series for the most common bearing types. Su single bearing universally faced can be used db or df with 2, 3, 4 etc. Handling of bearings deep groove ball bearings d 3 200 mm angular contact ball bearings d 10 200 mm selfaligning ball bearingsd 10 100 mm cylindrical roller bearings d 20 200 mm tapered roller bearings d 15 200 mm spherical roller bearings d 25 300 mm. After r, the size of the bearing will be given in 116 th of an inch. In addition to assisting in bearing identification it helps to cross refer. The designations of the bearings consist of a combination of numbers and. For example, the code 6318 stands for a deep groove ball bearing with a bore size of 90 mm. Levels of precision how bearing numbers and codes affect. The bearing series can be made up of letters andor numbers that designate the construction, diameter series, and in many cases the width series.
S1 nu cylindrical roller bearing, singlerow, two lipped outer ring, cylindrical inner ring. These basic designations are defined in the german din 623 standard and the relevant iso standard. Type code series bore suffix the type code indicates the type of bearing. Bearing number basic bearing knowledge koyo bearings. This part number can be divided into its components. The bearing no pattern number provide us enough details about the bearing silently.
Reduced bearing rb or quadrantal bearing qb fore bearing fb or forward bearing fb back bearing or backward bearing bb calculated bearing. He originated the gurney radialthrust angularcontact bearing todays 7000 series in 1905, and the gurney radialtype r bearing same designation today in 1909. P series these are not to be confused with the standard passenger car and light truck parts for the same applications, which also have a p suffix letter. The designations of the bearings consist of a combination of numbers and letters. How to identify bearings by bearing number calculation. Let us take an example to understand the bearing nomenclature more easily. The most common bearing series are r and l, with r representing a thick section and l representing a thin section.
Bearing number basic bearing knowledge koyo bearings jtekt. Prefixes and suffixes denote special modifications, for example. While each manufacturer uses their own numbers, there are a few numbers that could be. Bearing db68126 cylindrical roller bearings torrington. This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to wander around. Fag bearing designations fag bearing model numbers rules.
For most nsk bearing types, the basic designation is made up of numbers, but some are alphanumeric. Lots of customers are very confused about the fag bearing designations model numbers. Always remember that bearings with these designations need to be replaced with the same designators i. Bearing numbers and types explained engineer students. To download a pdf document of this catalogue and for information. The additional designation put before the basic designation is primarily used to determine if the bearing is made of stainless steel.
If the bearing is flanged, there will also be an f for the series designation, while if the bearing is measured by inches rather than metric, it will have an i after the first letter. Part numbers symbol bsp connection pushin for semirigid tubing mm nfe 49100 plastic lever with roller bearing lever with adjustable plastic roller bearing adjustable steel rod lever operating pressure bar bore diameter mm flow at 6 bars nm3h activation force at 6 bars dan circuit function. Nsk bearing designation nomenclature prefixes suffixes. Specific characteristics of each type are identified by the bearing number. Nomenclature guide to common bearing types for reference use only. Retaining flanges on the inner ring, guide ring centred on the inner. 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. 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 unit system can be set only on the select bearing page. This section provides general information that is valid for rolling bearings. Bearing aj6017241 needle roller bearings torrington. The abma part numbering system applies to new bearing seriesonly. The designations of most skf rolling bearings follow a bearing designation system. 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.
The basic designation of nsk bearing indicates the nsk bearing type and the bore size. 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. In case of inch bearings, the bearings first digit will be r. Nmb bearings part numbering system national precision. Skf bearing designation nomenclature nodes bearing.
For most bearing types, the basic designation is made up of numbers, but some are alphanumeric. Bearing numbers of standard bearings corresponding to jis b 1512 rolling bearing boundary dimensions are prescribed in jis b 15. The following tabulation shows those codes which most commonly apply to bearings in u. Nsk and rhp bearings designation systems nskrhp uk ltd. The 3rd and 4th digits of the bearing number relate to the bore size of the bearing, numbers 00 to 03 have a designated bore size depending on the number. The bearings also have c2, c3, c4 or c5 designation after the bearing number. Bearing nomenclature and numbering system korbel loziska.
The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. The boundary dimensions of rolling bearings, namely, bore diameter, outside diameter, width, and chamfer dimensions have been standardized so that common. While numbers over 03 simply have a bore size which is 5 times that of the 3rd and 4th digit. An example and the applicable options for spherical roller bearings are given below. These high performance parts have unique core part numbers different from the. Bearing numbers listed above are for bearings made of high carbon chrome bearing steel.
A bearing number contains many hidden information about the bearing in itself. The anti friction bearing manufacturers association have a code system which identifies bearings by type, size and construction. Hi, i am harikesh kumar divedi, a mechanical engineer and founder of engineering made easy a website for mechanical engineering professional. The unit system section becomes read only on the other pages.
Within each order code, a distinction is made between the basic designation and any suf. Rs provides a better seal but more rolling friction than 2z. A figure following the asr indicates the number of holes. Numbers over 03 simply have a bore size which is 5 times that of the 3rd and 4th digit. Any bearing supply house or bearing manufacturer can identify their bearings from such code numbers. Bearing aj600877 cylindrical roller bearings torrington. Bearings measured from north in a clockwise direction is termed as whole circle bearing. In this post, we will discuss about how to identify bearings by bearing number. This number is multiplied by five to give the bore size. 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.
This alphanumeric combination denotes the type, size and structure of the bearing. 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 complete designation is always marked on the bearing package, whereas the marking on the bearing may be incomplete or deviate from. Read on to find out more information fag bearing designations can be identified as the following table. This indicates that the internal fit the inner race to the ball to outer race is not standard. Boundary dimensions for radial bearings excluding tapered roller bearings are shown in the attached tables.
1566 1418 1056 24 901 33 148 1474 1045 1081 715 148 832 744 1215 1236 1478 309 841 817 1163 826 835 454 158 772 1511 1320 1653 552 1598 626 305 906 485 838 1489 2 1323 128 1311