To download a pdf document of this catalogue and for information about important. Skf bearing housings fit your bearings to maximize costefficient performance and help protect against contamination and loss of lubricant. The dn number is the product of the average diameter of the bearing rings millimeters. Deep foundations may be endbearing piles which convey all the weight put on them endtoend, from the building above to the bedrock on which they are set, friction piles which transfer some of the pressure put on them to the soil around them, through friction or adhesion along the. Bearing numbers for tapered roller bearings inch system. 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 boundary dimensions of rolling bearings, namely, bore diameter, outside diameter, width, and chamfer dimensions have been standardized so that common dimensions can be adopted on a worldwide scale. Turner part numbers contain useful information about bearing, housing, and shaft dimensions. Bearings in this catalog are arranged by bearing type, with a size andor numerical listing. To facilitate international bearing interchangeability and economical bearing production, bearing boundary dimensions have been standardized by the international standards organization iso. Inner rings for needle roller bearings metric nominal dimensions 16. A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications.
All the bearings are designated with metric standards and not inches. Dec 01, 2015 the first time you choose a bearing catalog, it can be intimidating and confusing. Bearing part numbers help you to identify the type, size and general uses for a bearing. 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. Therefore, the feasibility of all bearing applications should be validated by the customer. Radial needle roller and cage assemblies metric nominal dimensions radial needle roller and cage assemblies inch nominal dimensions. The us army defines the bearing from point a to point b as the angle between a ray in the direction of north or south, whose origin is point a, and ray ab, the ray whose origin is point a and which contains point b. Double row styles nn, nnu double row cylindrical roller bearings are denoted by two ns within the part number e. The part number is usually stamped or printed on the bearing. 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. Evo, aa the meaning of these characters attached to the basic code is not specifically fixed. How to identify bearings by bearing number calculation and. The catalog can seem to be written in a secret code, with a series of letters and numbers that are unknown to anyone who hasnt chosen a bearing before.
Information about baring in the dictionary, synonyms and antonyms. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Bearing is used to reduce the stress and friction of the machine. Each bearing listing includes the appropriate dimensions. Using the timken bearing interchange the timken bearing interchange lists manufacturers part numbers, manufacturer name and the corresponding timken part number. This means that every bearing has been designated with a certain set of numbers and alphabets. The internal clearance values for each bearing class are shown in tables 8. Read on to find out more information fag bearing designations can be identified as the following table. Bearing numbering systembearing introductionktaiballbearing. Torrington heavy bearing part number system nomenclature. The figure below shows the arrangement and meaning and so forth of bearing symbols for miniature and extrasmall ball bearings. In addition to assisting in bearing identification it helps to cross refer nsk and rhp types.
Proper usage and audio pronunciation plus ipa phonetic transcription of the word baring. This publication is intended for use within the nskrhp organisation and can be used in conjunction with the publication, nsk and rhpprefixes and suffixes 1nrpse12. Iso dimensional system and bearing numbers download kbiso dimensional system. This part number can be divided into its components. As the distributors for enduro bearings, people ask us all the time what do the bearing codes mean. Roller bearings are circular shaped and function the.
Bearing numbers composite 55mm paralleless 60mm dexter 1. Skf other rolling bearings skf rolling bearings not covered in the ball bearings and roller bearings sections, such as superprecision bearings, thin section bearings, slewing bearings or linear bearings, follow designation systems that can differ significantly from the. The bearing no pattern number provide us enough details about the bearing silently. Here, r4 means, it is an inch bearing whose bore size is 416th or you can say 1 4th of an inch. The e indicates that appropriate eye bolts are supplied with the bearing. The split to the shaft bearing can be built around the shaft without dismantling adjacent equipment or machinery.
This is due to several factors including bearing fit. The drawing number does not provide any information about the bearing. While numbers over 03 simply have a bore size which is 5 times that of the 3rd and 4th digit. To provide the highest levels of service, skf endeavours to have its standard assortment match virtually all cus. Our team has experience exporting chinese bearings for more than 10 years. Infringe definition and meaning collins english dictionary. Bearing with internal clearance greater than normal. General catalogue overview this new skf general catalogue contains almost all of the standard rolling bearings and accessories required by industrial equipment manufacturers, as well as those used for replacement purposes. For example, the code 6224 stands for a deepgroove ball bearing with a. Technical report basic knowledge services nsk global. Levels of precision how bearing numbers and codes affect.
Bearings are a hardened spherical ball that spins between two surfaces and reduces friction. The basic nsk number indicates the nsk bearing series type and the width and diameter series as shown in table below. A rolling bearings major dimensions, known as boundary dimensions. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary start your free trial today and get unlimited access to americas largest dictionary, with. Bearing nomenclature and numbering system korbel loziska. The objective of this publication is to introduce and explain the designation systems used to identify nsk and rhp bearings. Let us take an example to understand the bearing nomenclature more easily. The example at the header shows a 6001 2rs bearing. Unfearing definition of unfearing by the free dictionary. A rolling bearings major dimensions, known as boundary dimensions, are shown in figs.
They are used in accordance with requirements for identifying modifications of the bearing design and certain design features. Understanding motor nameplate information nema vs iec standards. Therefore, when a european bearing producer makes a single row ball bearing, with 40 mm diameter of the inner circle, with 80 mm diameter of the outer circle and 18 mm of width, they will provide the bearing with the same identification marking as a producer from asia or south america. More than 250,000 words that arent in our free dictionary. If the bearing code only contains the basic code and doesnt include any prefixes or suffixes, it means that it is a normal bearing with normal. The data contained in this guide is intended for reference purposes and will assist you in part number and external bearing dimension identification. Nonbearing definition, of a wall or partition supporting no load other than its own weight.
Influence of the bearing number on micro gas bearing system. Information and translations of unbearing in the most comprehensive dictionary definitions resource on the web. Forbearing definition in the cambridge english dictionary. Interchanging bearing numbers between different numbering systems requires attention to detail and full knowledge of the codes that define the specifications. This is important because misalignment is one of the big causes of bearing failure. For example, the code 6224 stands for a deepgroove ball bearing with a bore size of 120 mm. Inch dimension metric ucp205 16 bearing style housing style housing number shaft diameter in 116 of an inch, eg. Bearing meaning in the cambridge english dictionary.
Ball bearings are loose spheres that separate the races in a bearing. Answer william z stands for the type of shield on bearing a single z means its only shielded on one side and being z it would be a meatle shielded bearing v would be rubber. Part numbering systems b r o l l e r b e a r i n g s how to recognize your part number the part numbering systems for singlerow tapered roller bearings type ts are internationally recognized. If the bearing is an inch bearing the first digit in the number is an r, then the size is the digit or digits immediately following the r, in 16ths of an inch. Interchangeability means interchangeable only among products. Understanding motor nameplate information nema vs iec. How to find type of bearing using bearing number quora. Prefixes and suffixes can have different meanings depending on the bearing series. Read the article on industrial bearing remanufacturing and more in evolution online. As well as these bearing numbers, jtekt uses supplementary codes other than those provided by jis.
Skf bearing designation nomenclature nodes bearing. Hello friends iss video me bearing number ke har digit ka meaning btayaaa gya hai, bearing od or thickness ko bhi explain kiya hai. Well, bearing manufacturers dont simply use these numbers to confuse you, they actually use these numbers to categorise bearings in a way in which from a glance its easy. Nomenclature guide to common bearing types for reference use only. Explore our wide, highquality range and access the right housing for your toughest challenge. Dec 30, 2017 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. Bearing cross reference by manufacturer brand part number. Bearing numbers are comprised of a bearing number examples 6205zzc3 2as shell alvania s2 grease radial internal clearance c3 shielded both. Bearing design and features, sealshield bearing types and selection. The third number is a set of two numbers indicates the bore in mm of the bearings.
A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. Unbearing definition of unbearing by merriamwebster. 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. Bearing numbers listed above are for bearings made of high carbon chrome bearing steel. Asts engineers and sales reps are experts with all numbering systems and can assist you with breaking down any bearing part number. Nov 16, 2015 every bearing consist these type of numbers printed on them these represents. This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to wander around. Actual bearing performance is affected by many factors beyond the control of the timken company. Bearing is a material which is used to rotate the equipment in liner movement. We are very well aware of the fact that at the time of ordering or at the time of replacing these bearings there is a specific number designated to them. Bearing numbers and types explained engineer student. Sep 30, 2011 lots of customers are very confused about the fag bearing designations model numbers. Fag bearing designations fag bearing model numbers rules.
Bearing number basic bearing knowledge koyo bearings jtekt. A bearing number contains many hidden information about the bearing in itself. They simplify shaft design, are maintenancefree, and are the bearing of choice for an increasing number of applications. Numbers are sorted ahead of letters in the same position. The dimensions for these can be found in the super precision section of this catalog and can be ordered with standard precision. 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. See below for more information on the turner part numbering system. This first number relates to the bearing type, as shown in the table below type 6 is a deep grooved roller bearing. Bearing numbering system is to introduce the meaning of letters with the bearings models. Example 6205 c3 suffix c4 bearing with internal clearance greater than c3. If someone infringes a law or a rule, they break it or do something which disobeys it. Nsk basic numbers supplementary symbols, and the meanings of common numbers and symbols are listed in table below. A twodigit number is used for bore sizes from 20 mm to 480 mm. This blog post will help you crack the code and understand how.
For many medium to largesize bearings in a number of demanding industries, remanufacturing can offer considerable benefits. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. Home about us for bearing distributors or end users, findbearing could be your first choice on high quality chinese bearings. 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. How to find bearing details from bearing series code or. When you walk into a room with your shoulders straight and your head up, people might say you have a noble bearing. Here, r4 means, it is an inch bearing whose bore size is 416th or you can say 14th of an inch.
How to identify bearings by bearing number calculation. Forbearing synonyms, forbearing antonyms merriamwebster. In such a case, the load rating will differ from the one listed in the bearing tables. Ve553e same as ve552e, but threaded holes in both side faces. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary. This means significant reductions in fitting time over solid bearings, with dramatic reductions in downtime and immense savings in plant maintenance. In this post, we will discuss about how to identify bearings by bearing number. Oem, timken, nsk, skf, fag, zf, irb, snr, ina, nke, koyo, optimal, ruville. For most bearing types, the basic designation is made up of numbers.
There are many types of bearing in the market some of the most used bearings are ball bearing, roller bearing, cylindrical roller bearing, tapered roller bearings. Table 1 standard cages for angular contact ball bearings. Forbearing definition and meaning collins english dictionary. Unbearing definition, the manner in which one conducts or carries oneself, including posture and gestures. Someone who is forbearing behaves in a calm and sensible way at a time when they would. Furbearing definition of furbearing by the free dictionary. In addition, for bearings with the same serial number, if the type of cages are different, the number of balls may also be different. Example 6205 c4 suffix c5 bearing with internal clearance greater than c4. Their bearings can handle heavier radial and axial loads, and their physical construction is more. Several part number systems have been developed that can be classified according to metric or inch systems.
161 305 1572 1482 1078 418 292 549 441 1593 391 824 1230 686 591 1451 365 232 1316 1581 1223 1525 942 654 583 1652 507 232 392 2 647 604 1406 1157 380 1136 1083 666 1293