But the bearing 6708 is of the thinwall type, whereas the 6408 type is massive and thickwalled. The previous designs of spherical roller bearings were already characterised by high performance. Certain design considerations must be met in the device and bearing to address such factors as load, speed, temperature, environment, method of lubrication and fit. This first number relates to the bearing type, as shown in the table below type 6 is a deep grooved roller bearing. 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 that is with the code 6208. In cases of high speed and temperature relubrication may be necessary. Nsk bearings product catalogues and technical data. The operating temperature of a sealed spherical roller bearing is linked to the grease and the material of seals. How to ordernomenclature bearing reference guide ultra kleen ez kleen extreme duty setscrew ball bearing grip tight dlok ball bearing setscrew ball bearings how to order there are two ways to specify dodge bearings. 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 product range includes nsk bearing units, bearing units, linear guides, hub units etc. Sealed spherical roller bearings performance economical environmental protection advantages of the sealed series increased service life. Bearing nomenclature skf is your source for a wide range.
Bearing nomenclature skf is your source for a wide range of. Koyo ball, needle, and roller bearing nomenclature. Type code series bore suffix the type code indicates the type of bearing. Bearing designation systems 11 the basic designation consists of the code for the bearing series and the code for the bearing bore.
Nomenclature guide to common bearing types for reference use only. View notes bearing nomenclature from mechanical me41267 at university of hannover. Need an additional element to the bearing, visit the page seals, including oring seal or rotary shaft seal. Nsk bearing nomenclature consist of basic numbers and supplementary symbols. An oil groove and holes are provided in the outer ring to supply lubricant and the bearing numbers are suffixed with e4. Bearing nomenclature and numbering system korbel loziska. Sealed spherical roller bearings welcome to ntn bearing. Spherical roller bearings production started with technical. Nachi deepgroove ball bearings are available in a wide range of series defined by the jisiso standard dimension plan and are also made to meet specialized dimension and configuration requirements. By continuing without changing your browser settings, we assume you give your consent to receive cookies. Frantz manufacturing conveyor bearing nomenclature. Bearing solutions for the material handling industry. 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.
Metric iso radial cylindrical roller bearings nomenclature. Nsk linear guides reference guide for all interchangeable. Nsk linear guides reference guide for all interchangeable series courtesy of steven engineering, inc. Mediumduty vehicle clutch release bearings ams automotive offers the industrys most comprehensive lineup of mediumduty clutch release bearings, including comprehensive coverage on japanese applications. Kbc bearings fullline catalog is 244 pages and is broken down into fully index sections to quickly access the information you are looking for. To download a pdf document of this catalogue and for information. Iso dimensional system and bearing numbers a nsk e. Because of their versatility, singlerow, deep groove ball bearings are the most popular of all ball bearing types. Kbc bearings full line catalog industrial bearings. This is important because misalignment is one of the big causes of bearing failure. However, you can change your browser cookie setting at any time. The contents cover basic designations for ball and roller bearing series and their prefixes and suffixes. Bearing numbers for tapered roller bearings inch system bearing numbers for miniature ball bearings.
How to order nomenclature bearing reference guide ultra kleen ez kleen extreme duty setscrew ball bearing grip tight dlok ball bearing setscrew ball bearings how to order there are two ways to specify dodge bearings. This part number can be divided into its components. Nsk bearings nsk bearings is one of the leading manufacturers in the world of various types of bearings including rolling bearings, linear technology and automotive components. This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to wander around. There are two main sections to the kbc catalog general kbc bearing topics and the dimensional product information. The rolling elements are separated and held in position by cages or other retaining devices. Fourbolt fsnt housings for cylindrical bore bearings.
Ritbearing is one of the primary importers of ors products in the u. Emerson front cover nomenclature pages for thomasnet upper and lower. 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 64 table of contents spherical roller bearings introduction about nsk spherical roller bearings. Super precision bearings bearing sales corporation. The boundary dimensions of commonly used nsk bearings mostly conform to the organizational concept of iso, and the nsk bearing numbers of these standard bearings are specified by jis b 15 bearing numbers for rolling bearings. They serve almost exclusively to indicate individual components of complete bearings or to designate miniature bearings. 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 sec t ion 7 introduction about nsk ball bearings radial ball bearings angular contact bearings double row bearings selfaligning ball bearings. Nsk full bearing reference nsk abbreviated part number.
The product range includes nsk bearing units, bearing units, linear guides, hub units etc covering many bearing types such as nsk deep groove bearings, tapered roller bearings, angular contact bearings, selfaligning bearings and many more. Each bearing is engineered to exact oem specifications using the highest quality materials, offering the. How to take your bearings in the markings on bearings, and not lose your mind. International standardization of bearing numbers has been examined by iso but not adopted. 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. Nachi deepgroove ball bearings are available in a wide range of series defined by the jisiso standard dimension plan and are also made to meet specialized. Most of the product offering have part numbers with listings shown throughout this catalog. Spherical roller bearings e1 higher costeffectiveness and. While each manufacturer uses their own numbers, there are a few. Most ntn and all bower cylindrical roller bearings feature casecarburized components. Peer insert bearings are offered with seals from moderate to extreme contamination applications. Tapered roller bearings production started under technical. The most important codes for metric bearing series are listed in table 1. Certain design considerations must be met in the device and bearing to address such factors as load, speed, temperature, environment, method.
The most common bearing types and nomenclature of bearing parts are shown in fig. Higher costeffectiveness and operational security with xlife fag spherical roller bearings have proved highly effective wherever high loads are present and there is a need to compensate for shaft deflections andor misalignment of bearing seats. Nsk offer standard and customised parts across many industry sectors. Peer bearing company offers a full line of mounted bearing units tailored specifically for the material handling industry. Introduction to the bearing nomenclature and numbering system. This second number relates the bearing series, which reflects the robustness of the bearing. In addition to assisting in bearing identification it helps to cross refer. An example and the applicable options for spherical roller bearings are given below. Bearings catalogs and cad drawings services nsk global. Nomenclature inch design number 2 digit roller, cage, cup or cone number additional features nonstandard radius extra markings x boundary dimensions adapted to international standards m. Nsk full bearing reference nsk abbreviated part number recommended uk retail list price july 2014 02474r02420r 5 02474r02420r n 87. We offer premium cylindrical roller bearings under the ntn and bower brand names.
To use bearings with oil grooves and holes, it is recommended to provide an oil groove in the housing bore, since the depth of the groove in the bearing is limited. The service life of a bearing can be examined from two perspectives. Technical report basic knowledge services nsk global. Ntnsnr sealed spherical roller bearings do not require maintenance under normal operating conditions. Rings and rollers are made from casehardened alloy steel of bearing quality to provide superior fatigue life and reliability. Formed in 1988, ors is turkeys premier manufacturer of radial ball bearings metric.
It is also known that, when bearing temperature rises under high speed revolutions, the preload on ceramic balls is smaller than that on steel balls because the coefficient of linear expansion of the cer amic is smaller than that of bearing steel fig. Popular mechanical seal mating rings come in ceramic white and sintered nickeliron gray. Needle roller bearings with inner ring, with polyamide cage series nkitn nkitn permissible axial displacement s f b r d d r 103 051 s 103 079 for the design and lubrication of the bearing arrangement and for fitting of the bearings, follow the guidance in ina catalogue 307. Prefix heavy heavy medium metric designed light medium medium code 25 28 30 030 32 450 up, digit number that identifies maximum bore range. Action bearing nomenclature guide to common bearing types. Regarding bearing accuracy classes, besides iso normal accuracy, as the accuracy improves there are class 6x for tapered roller bearings, class 6, class 5, class 4, and class 2, with class 2 being the highest in iso. While numbers over 03 simply have a bore size which is 5 times that of the 3rd and 4th digit. 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. Single and double lip radial shaft seals rated for pressures up to 90 psi. Spherical roller bearings roller bearings products nsk. The applicable accuracy classes for each bearing type and the correspondence of these classes are shown in table 8.
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