This second number relates the bearing series, which reflects the robustness of the bearing. The bearing no pattern number provide us enough details about the bearing silently. Bearing numbering systembearing introductionktaiballbearing. Skf bearing designation nomenclature nodes bearing. Bearing number 51200 is an example of axial deep grove ball bearings or thrust bearings. Both metal and plastic bearings can be found everywhere, from refrigerators to computers to the 100 or so bearings found in your car. Bearing number basic bearing knowledge koyo bearings jtekt. The drawing number does not provide any information about the bearing. This alphanumeric combination denotes the type, size and structure of the bearing. Nov 16, 2015 every bearing consist these type of numbers printed on them these represents. Abis miniature and precision ball bearings with bores of 0. Globalspec product announcement for bearing numbering system chart pdf data downloadable in pdf format. Today we utilize our global resources to ensure that bearing users throughout the world have access to the highest quality and best selection of mounted bearings in the industry.
Grease replenishing system for highspeed spindles finelub ii. 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. National precision bearing specializes in precision inch and metric ball bearings for miniature, aircraft and industrial applications. Inner rings for needle roller bearings metric nominal dimensions 16. Edt ball bearing part numbering system ball bearing material ball bearing style bearing or housing size modifier shaft lubricant modifier 4 400 stainless y set screw examples. Unbearing definition of unbearing by merriamwebster. Easily customize specifications and options to meet your needs. Roller bearings are circular shaped and function the. Boca bearings is the leader in ceramic and ceramic hybrid bearing technology for industrial and recreational applications. Such bearings are basically designed for heavy axial load or thrust load. In japan, jis japan industrial standard adheres to the. 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. We strive to offer all of our customers the very best in terms of. Within both the metric and inch systems, different part number systems have been developed.
Bnl is renowned worldwide for its design and manufacture of high quality bearings. Bearing number starts with 5, indicates axial deep grove ball bearings or thrust bearings. Bearing numbering system chart pdf from ezo spbusa, llc. Watch the video to learn more about this system, then. Nmb bearings part numbering system national precision. The nmb part numbering system is composed of the part number and specification. This first number relates to the bearing type, as shown in the table below type 6 is a deep grooved roller bearing. The boundary dimensions of rolling bearings, namely, bore diameter, outside. The abma part numbering system applies to new bearing. We manufacture and supply the most comprehensive range of bearings, constant velocity joints, and other precision industrial and automotive equipment to meet a variety of applications, across a variety of industries. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. The pack contains a full lesson plan, along with accompanying resources, including a student worksh. International standardization of bearing numbers has been examined by iso but not adopted. 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.
Nomenclature guide to common bearing types for reference use only. Hello friends iss video me bearing number ke har digit ka meaning btayaaa gya hai, bearing od or thickness ko bhi explain kiya hai. 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. In addition to assisting in bearing identification it helps to cross refer. The boundary dimensions for certain series of bearings are defined in various standards, such as abma, jis and iso. 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. 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.
To assist you in understanding ast bearings radial ball bearing nomenclature and numbering system, we offer the following examples and codes. The lesson is designed for the new gcse specification. Radial ball bearing nomenclature and numbering system. Ball bearings are loose spheres that separate the races in a bearing. This is important because misalignment is one of the big causes of bearing failure. Nonbearing definition of nonbearing by the free dictionary. Tapered roller bearing engineering information cad. Bearing numbers for tapered roller bearings inch system bearing numbers for miniature ball bearings. Influence of the bearing number on micro gas bearing system. A bearing number contains many hidden information about the bearing in itself. 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. How to find type of bearing using bearing number quora. Skf explorer, system 24 and wave are registered trademarks of the skf group. The jis numbering system is based on the system defined in the jis15.
For more than 120 years, dodge has been one of the leading suppliers of power transmission products and system components in the world. A bearing number is composed of a basic number and a supplementary code, denoting bearing specifications. Minebea has created its own part numbering system called the nmb part numbering system. National precision bearing, industrial ball bearings. They serve almost exclusively to indicate individual components of complete bearings or to designate miniature bearings. Warranty ntn warrants, to the original purchaser only, that the delivered product which is the subject of this sale a will conform to drawings and specifications mutually established in writing as applicable to the contract, and b. Bearings designed to meet a specific customer requirement are typically designated by a drawing number. Bearing nomenclature and numbering system korbel loziska.
This part numbering system has become the international standard for inchsized bearings. Bates numbering in pdf documents introduction bates numbering is a method of indexing legal documents for easy identification and retrieval. There are many different numbering systems used in the bearing. Technical report basic knowledge services nsk global. Asts engineers and sales reps are experts with all numbering systems and can assist you with breaking down any bearing part number. In this post, we will discuss about how to identify bearings by bearing number. Inch system bearings are normally assigned individual part numbers. However, the truth is that after understanding the basic principles even a complete beginner can easily and promptly make sense of the system of the markings on bearings. Bearings catalogs and cad drawings services nsk global. The part number is usually stamped or printed on the bearing. Output part number, specification data sheet, specification drawing, and cad data for your custom designed item. Pdf a bearing is a machine element which supports another moving machine element known as journal. Skfs new ballast water management system bwms passed the landbased tests and has thus taken a great step forward towards imo and uscg type approval.
This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to wander around. Edt part numbering system revised 1114 na 1 g e 7 20lk na 1 g e 7 20lk na 1 g e ring7 20lk na 1 g e 7 20lk. Bearing numbers listed above are for bearings made of high carbon chrome bearing steel. In addition, we also develop and produce mounted units, linear guides, ball screws, wheel bearing units and steering systems. Welcome to nsk global website bearings, automotive. To download a pdf document of this catalogue and for information. Jet engine schematics are available online and can be interpreted to find the number of bearings. 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. Nsk is a global manufacturer of ball and roller bearings, linear motion technology, automotive components and steering systems with both domestic and overseas manufacturing capabilities. The designation system for tapered roller bearings is explained in the relevant product section.
Singlerow tapered roller bearings are the most basic and widely used, consisting of a cone assembly and a cup. In a few cases the digit for the bearing type or the first digit of the dimension series identification is omitted. 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. Bearing numbers composite 55mm paralleless 60mm dexter 1. Bearing numbering system chart other bearing technical resources. Timken 355x tapered roller bearing, single cone, standard tolerance, straight bore, keyway, steel, inch, 1. The most important exceptions in the basic bearing designation system are. Bearing designation systems 7 order codes for bearings are made up of a combination of letters and numbers. Bearings in this catalog are arranged by bearing type, with a size andor numerical listing.
Construction, classes, and special features of rolling bearings are fully described in the boundary dimensions and bearing numbering system section. As well as these bearing numbers, jtekt uses supplementary codes other than those provided by jis. Bearings not covered under rolling bearings, such as superprecision bearings, thin section bearings, slewing bearings or linear bearings, follow designation systems that can differ significantly from the basic designation system. This numbering system uses three alphanumeric fields to define a dimension series. These are the number of bearings of the jet engine and the number of them upstream of the bleed air ports as well as the oil consumption per hour.
Timken patented the first in 1898 and today offers the worlds widest variety in. Unbearing definition, the manner in which one conducts or carries oneself, including posture and gestures. We hope this catalog will allow you to select the optimum bearing for your. Nrb bearings ltd supplier of precision engineering bearings to leading oems fundamental grade 45 superior fundamentals valuation grade 55 cmp has strong upside. The example at the header shows a 6001 2rs bearing. Each bearing listing includes the appropriate dimensions. Skf uses cookies on our web site to align the information shown as closely as possible to the visitors preferences. Iso dimensional system and bearing numbers download kb. This is a complete lesson on bearings that is suitable for gcse higher tier students.
Classification and characteristics of rolling bearings. Timken 355x tapered roller bearing, single cone, standard. A person seeing the markings for the first time might get the impression that they are some mysterious codes which can be understood only by erudite and experienced pundits. 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. A mechanical bearing is a component used between two parts that allows rotational or liner movement, reducing friction and enhancing performance to save energy. B standard type the design contents can be altered according to different bearing structures c exampleb indicates nominal contact angle40 for angular contact ball bearings, ant it d indicates the increased contact angle for tapered roller bearings. Several part number systems have been developed that can be classified according to metric or inch systems. Fortunately, a specific bearing can be identified using a ball bearing part numbering system. How to identify bearings by bearing number calculation. Bearings 101 bearing types and numbering system youtube. Bearing series in all the part numbering systems the term bearing series is. Aviation instrument bearings and dental bearings are extensively stocked. Inch system bearings are normally assigned individual part numbers for the inner race and outer races, whereas iso bearings are assigned a unique part number for the bearing assembly inner race and outer race.
Millimeters bearing numbers listed above are for bearings made of high carbon chrome bearing steel. Bearing part numbers help you to identify the type, size and general uses for a bearing. Within each order code, a distinction is made between the basic designation and any suf. To facilitate international bearing interchangeability and economical bearing production, bearing boundary dimensions have been standardized by the international standards. Bearing numbering system is to introduce the meaning of letters with the bearings models. Oct 14, 2011 bearings come in a number of forms and sizes. A bearing is a machine element that constrains relative motion to only the desired motion, and reduces friction between moving parts. Iso dimensional system and bearing numbers download kb iso dimensional system. Iso 355 part numbering iso introduced a new numbering. 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. C indicates nominal contact angle 15 for angular contact ball. Bearing is defined by websters to be a support or supporting part a bearing is a component that allows for relative motion between parts your skeleton is the central structure that supports your body your bodys joints are bearings that allow different parts to move bearings can have many forms, but only two types. Interchanging bearing numbers between different numbering systems requires attention to detail and full knowledge of the codes that define the specifications.
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