21.100 - Bearings
ICS 21.100 Details
Bearings
Lager
Paliers et roulements
Ležaji
General Information
Frequently Asked Questions
ICS 21.100 is a classification code in the International Classification for Standards (ICS) system. It covers "Bearings". The ICS is a hierarchical classification system used to organize international, regional, and national standards, facilitating the search and identification of standards across different fields.
There are 880 standards classified under ICS 21.100 (Bearings). These standards are published by international and regional standardization bodies including ISO, IEC, CEN, CENELEC, and ETSI.
The International Classification for Standards (ICS) is a hierarchical classification system maintained by ISO to organize standards and related documents. It uses a three-level structure with field (2 digits), group (3 digits), and sub-group (2 digits) codes. The ICS helps users find standards by subject area and enables statistical analysis of standards development activities.
e-Library Subscription
Create subscription and get permanent access to documents within 21.100 - Bearings
Currently subscription includes documents marked with .We are working on making all documents available within the subscription.
This document specifies the chamfer least material boundary for ring and washer chamfers of metric series rolling bearings for the corresponding radius maximum material boundaries. The radius maximum material boundaries are given in references[1],[2],[3],[4],[5],[6],[7]. Recommendations are given for the corresponding housing and shaft fillet radii.
- Standard13 pagesEnglish languagesale 15% off
- Standard13 pagesFrench languagesale 15% off
This document specifies tribological tests of polymer-based plain bearing materials under specified working conditions, i.e. load, sliding velocity and temperature, with and without lubrication. From the test results, data are obtained which indicate the relative tribological behaviour of metal-polymer and polymer-polymer rubbing parts. The purpose of this document is to obtain, for polymer material combinations used in plain bearings, reproducible measured values for friction and wear under specified and exactly-defined test conditions without lubrication (dry surfaces) and with lubrication (boundary lubrication).
- Standard28 pagesEnglish languagesale 15% off
This document is a part of a package of standards: EN 12080, EN 12081, EN 12082-1 and EN 12082-2. This document specifies the quality parameters of axlebox rolling bearings supporting the load of the vehicle, required for reliable operation of trains on European networks. It covers metallurgical and material properties as well as geometric and dimensional characteristics. It also specifies methods for quality assurance and non-destructive testing of the products.
- Standard51 pagesEnglish languagee-Library read for1 day
This document specifies tribological tests of metallic bearing materials for plain bearings under conditions of boundary lubrication.
- Standard15 pagesEnglish languagesale 15% off
This document specifies the characteristic values for selected tilting-pad journal bearings with four or five centrally or eccentrically supported tilting pads, and with angular spans of pad sliding surfaces of Ω = 80°, 60° and 45°.
- Standard73 pagesEnglish languagesale 15% off
This document specifies the characteristic values for selected two-, three- and four-lobe bearings.
- Standard67 pagesEnglish languagesale 15% off
This document establishes the permissible operational parameters in terms of guide values for the calculation of selected multi-lobed and tilting-pad journal bearings.
- Standard6 pagesEnglish languagesale 15% off
This document specifies the general principles, assumptions and preconditions for the calculation of multi-lobed and tilting-pad journal bearings by means of an easy-to-use calculation procedure based on numerous simplifying assumptions. The calculation method applies to the design and optimisation of plain bearings, for example in turbines, compressors, generators, electric motors, gears and pumps. It is restricted to steady-state operation, i.e. in continuous operating states the load according to size and direction and the angular velocity of the rotor are constant.
- Standard38 pagesEnglish languagesale 15% off
This document specifies requirements and guidance on the storage, transportation, handling, installation, operation and replacement of plain bearings and related parts.
- Standard9 pagesEnglish languagesale 15% off
This document defines the calculation of the modified reference rating life taking into consideration lubrication, contamination, and fatigue load limit of the bearing material, as well as tilting or misalignment, operating clearance of the bearing and internal load distribution on rolling elements. The calculation method provided in this document covers influencing parameters additional to those described in ISO 281. The general directions and limitations given in ISO 281 apply to this document. The calculation methods pertain to the fatigue life of the bearings. Other mechanisms of failure, like wear or microspalling (gray-staining), lie outside the scope of this document. This document applies to single- and multi-row radial and thrust ball bearings, subjected to radial and axial load and with radial clearance and tilt taken into account. It also applies to single- and multi-row radial and thrust roller bearings, subjected to radial and axial load and with radial clearance, edge stress and tilt taken into account. References to methods for the analysis of the internal load distribution under general load are given. The calculation of load distribution and basic reference rating life is also applicable to hybrid bearings, using the dynamic load ratings per ISO 20056-1[2]. The calculation of the modified reference rating life is not applicable to hybrid bearings.
- Standard36 pagesEnglish languagesale 15% off
- Standard36 pagesEnglish languagesale 15% off
- Standard36 pagesEnglish languagesale 15% off
- Standard37 pagesFrench languagesale 15% off
- Standard37 pagesFrench languagesale 15% off
- Standard37 pagesFrench languagesale 15% off
This document specifies the calculation of the effective static safety factor under consideration of tilt or misalignment, operating clearance of the bearing, and internal load distribution on rolling elements. The calculation method provided in this document covers influencing parameters in addition to those described in ISO 76. The directions and limitations given in ISO 76 and ISO 20056-2 apply to this document. The calculation method pertains to the static safety factor of the bearings. Other mechanisms of failure, like false brinelling, fatigue life, wear or microspalling (gray-staining), lie outside the scope of this document. This document applies to single and multi-row radial and thrust ball and roller bearings, subjected to radial and axial load and with radial clearance and tilt taken into account. References to methods for the analysis of the internal load distribution under general load are given. The analysis of effective static safety factor for multi-row bearings or bearings of a more complex geometry can be derived from the formulae given in this document. For these bearings, the load distribution for each individual row is considered. The calculation of effective static safety factor is also applicable to hybrid bearings, using the static load ratings according to ISO 20056-2.
- Standard10 pagesEnglish languagesale 15% off
- Standard12 pagesFrench languagesale 15% off
This document specifies a system of fits applicable to metallic plain bearings used in general engineering for mean relative bearing clearances, ψm, of 0,56 ‰ up to 3,15 ‰. Other clearance ranges can be used depending upon the requirements in specific applications. This system of fits is not applicable to half-bearings and bushes which, due to their special characteristics, are not measured by diameter but by wall thickness, and which are dimensionally changed on assembly. It is not applicable to profile bore or tilting pad bearings, or to cases where specific tolerances have been established by consideration of the bearing performance at both extremes of clearance. This document is applicable preferably to bearings in rotating machines or transmissions, but it can be used similarly in other ranges of application.
- Standard9 pagesEnglish languagesale 15% off
This document specifies dimensions and tolerances for cylindrical and flanged bushes with inside diameter, d1, in the range 6 mm to 200 mm. This document applies to solid mono-metal copper alloy bushes to be used as plain bearings with and without oil holes and oil grooves.
- Standard8 pagesEnglish languagesale 15% off
This document specifies a method for compression testing of bearing materials. It is applicable for both bulk materials and coatings. Compression testing within the meaning of this document serves for the determination of the behaviour of bearing materials under uniaxial compression loading which is uniformly distributed over the cross-section. For this purpose, a cylindrical specimen or a setup of two such specimen, with an original cross-section, A0, is loaded at constant crosshead speed and the resulting compressive stress and compressive strain are recorded.
- Standard10 pagesEnglish languagesale 15% off
This document specifies the most commonly used terms relating to lubrication of plain bearings with their definitions and classification. For some terms and word combinations, their short forms are given, which can be used where they are unambiguous.
- Standard17 pagesEnglish languagesale 15% off
- Standard18 pagesFrench languagesale 15% off
- Standard18 pagesFrench languagesale 15% off
This document specifies the most commonly used terms relating to friction and wear of plain bearings with their definitions and classification. For some terms and word combinations, their short forms are given, which can be used where they are unambiguous.
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
This document specifies the most commonly used terms relating to design, bearing materials and their properties of plain bearings with their definitions and classification. For some terms and word combinations, their short forms are given, which can be used where they are unambiguous.
- Standard44 pagesEnglish languagesale 15% off
- Standard44 pagesFrench languagesale 15% off
- Standard44 pagesFrench languagesale 15% off
This document defines common terms and symbols associated with geometrical product specifications (GPS) for use in the field of rolling bearings. This document gives requirements and recommendations on the transformation of GPS into figures and tables. This document includes the rules for the representation of symbols, tolerance values, limits of size, limit deviations and limit values for rolling bearings derived from GPS indications according to, for example, ISO 1101[7] and ISO 14405-1[13], including indications in textual documents and on technical drawings.
- Standard25 pagesEnglish languagesale 15% off
- Standard26 pagesFrench languagesale 15% off
This document specifies procedures and equipment for cleanliness inspections of rolling bearings. It describes, in particular, test methods and assessment techniques. This document is applicable to the test and assessment of various types of open bearings and capped bearings before grease filling, as well as the test and assessment of rolling bearing parts. This document is not applicable for linear motion rolling bearings.
- Standard24 pagesEnglish languagesale 15% off
- Standard24 pagesFrench languagesale 15% off
- Standard2 pagesEnglish languagesale 15% off
- Standard2 pagesFrench languagesale 15% off
This document establishes terms, descriptions and characteristics and provides typical photos of specified surface imperfections which can be found on finished silicon nitride rolling elements. Rolling elements refer to balls and rollers. Imperfections defined in this document correspond to patterns found on finished rolling elements before use. Deviations for the geometric product specifications (GPS) are not addressed in this document. This document does not give criteria for the acceptance limits of these imperfections. The identification of an imperfection is done between the different actors involved in the manufacturing, assembly or final use of the silicon nitride parts, depending on the technical specifications and the criticality of the application.
- Standard33 pagesEnglish languagesale 15% off
- Standard35 pagesFrench languagesale 15% off
This document specifies requirements for the selection and use of water-lubricated plain bearing materials used in different equipment and plants under various lubrication conditions, such as — fluid-film lubrication condition, — mixed lubrication condition, and — condition comprising a non-lubrication condition which shifts to a fluid-film lubrication condition. In addition, this document also specifies requirements for mating (shaft) material, the lubrication method and for items to consider during the design of water-lubricated plain bearing materials. The water used as a lubricant is pure water, tap water, river water or seawater. This document does not apply to the water solution of chemicals, refrigerants, liquid fuels, etc.
- Standard14 pagesEnglish languagesale 15% off
This document specifies how to effectively utilize material resources when recycling and reusing plain bearing materials. This document also specifies how to reduce the environmental impact of disposing of plain bearings.
- Standard4 pagesEnglish languagesale 15% off
ISO 12090-2:2011 establishes the boundary dimensions and tolerances for series 4 and 5 of linear motion rolling bearings, profiled rail guides.
These bearings consist of profiled rails with carriages, which can support forces from all perpendicular directions and moments around all axes and consist of recirculating rolling elements. The internal design of these profiled rail guides is at the discretion of the manufacturer. An assembly can comprise one or more carriages on a linear profiled rail.
- Standard14 pagesEnglish languagee-Library read for1 day
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
This document specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely
— through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),
— case-hardening bearing steels,
— induction-hardening bearing steels (unalloyed and alloyed),
— stainless bearing steels, and
— high-temperature bearing steels.
This document is applicable to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.
- Standard32 pagesEnglish languagee-Library read for1 day
This document specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely
— through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr),
— case-hardening bearing steels,
— induction-hardening bearing steels (unalloyed and alloyed),
— stainless bearing steels, and
— high-temperature bearing steels.
This document is applicable to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.
- Standard32 pagesEnglish languagee-Library read for1 day
This document specifies designs, dimensions, tolerances and technical requirements of spherical plain bearings rod ends for hydraulic fluid power cylinders. The specified tolerance values apply to finished spherical plain bearing rod ends before any coating, plating, ring splitting or fracturing.
- Standard32 pagesEnglish languagesale 15% off
This document specifies the technical delivery requirements for five groups of wrought ball and roller bearing steels as listed in Table 3, namely — through-hardening bearing steels (steels with about 1 % C and 1 % to 2 % Cr), — case-hardening bearing steels, — induction-hardening bearing steels (unalloyed and alloyed), — stainless bearing steels, and — high-temperature bearing steels. This document is applicable to the products and heat-treatment conditions given in Table 1 and the surface conditions given in Table 2.
- Standard24 pagesEnglish languagesale 15% off
- Standard25 pagesFrench languagesale 15% off
This document specifies dimensional characteristics, deviation limits from nominal values, and tolerance values to define the interface (except chamfers) of thrust rolling bearings. Nominal boundary dimensions are defined in ISO 104[1]. This document is not applicable to certain thrust bearings (e.g. thrust needle roller bearings) or for particular fields of application (e.g. special thrust precision bearings). Tolerances for such bearings are given in the relevant International Standards. Chamfer dimension limits are given in ISO 582[3].
- Standard13 pagesEnglish languagesale 15% off
- Standard14 pagesFrench languagesale 15% off
This document specifies dimensional and geometrical characteristics, deviation limits from nominal sizes, and tolerance values to define the interface (except chamfers) of radial rolling bearings. Nominal boundary dimensions are defined in ISO 15, ISO 355[2] and ISO 8443[4]. This document does not apply to certain radial bearings of particular types (e.g. needle roller bearings) or for particular fields of application (e.g. airframe bearings). Tolerances for such bearings are given in the relevant International Standards. Chamfer dimension limits are given in ISO 582[3].
- Standard48 pagesEnglish languagesale 15% off
- Standard54 pagesFrench languagesale 15% off
This document specifies the test data for outside and inside diameters of wrapped bushes made of mono and multi-layer bearing material for plain bearing applications. It also specifies test designations. Since the wall thickness of the bush is measured in the free condition, no special test data are required for this on the drawing (see ISO 3547‑5 and ISO 3547‑6). NOTE Depending on the manufacturing method, the back of the bushes can show isolated light depressions and, similarly, bushes with lubrication holes, grooves and bore indentations can show distortion. It is therefore suggested to measure the wall thickness away from these areas.
- Standard12 pagesEnglish languagesale 15% off
This document specifies the calculation procedures to calculate and assess a given bearing design, as well as to design a bearing as a function of some optional parameters. This document contains the design of the required lubrication system including the calculation of the restrictor data. This document applies to hydrostatic plain journal bearings under steady-state conditions.
- Standard31 pagesEnglish languagesale 15% off
This document specifies functions for thrust pad bearings. It also covers the effect of dynamic viscosity on lubricant film temperature.
- Standard11 pagesEnglish languagesale 15% off
This document specifies, according to ISO 12301, the checking of the peripheral length of thin-walled half bearings with or without flange, and describes the necessary checking methods and measuring equipment. Thin-walled half bearings are flexible and, in the free condition, do not conform to a cylindrical profile. This is one reason the peripheral length of the half bearings can only be measured under a constraining load by use of specialized measuring equipment. In addition, measuring equipment different from that illustrated in this document can be used, provided the measuring accuracy of the equipment is consistent with the specifications given in Clause 17. This document does not include the measurement of the parting line taper. This document applies to thin-walled half bearings, the specifications of which are given in ISO 3548‑1.
- Standard40 pagesEnglish languagesale 15% off
This document specifies a method for the determination of the endurance limit in fatigue of half-bearings of a multilayer bearing material.
- Standard15 pagesEnglish languagee-Library read for1 day
- Standard11 pagesEnglish languagesale 15% off
This document specifies a system of fits applicable to metallic plain bearings used in general engineering for mean relative bearing clearances, ψm, of 0,56 ? up to 3,15 ?. Other clearance ranges can be used depending upon the requirements in specific applications.
This system of fits is not applicable to half‑bearings and bushes which, due to their special characteristics, are not measured by diameter but by wall thickness, and which are dimensionally changed on assembly. It is not applicable to profile bore or tilting pad bearings, or to cases where specific tolerances have been established by consideration of the bearing performance at both extremes of clearance.
This document is applicable preferably to rotating machine parts and shafting, but it can be used similarly in other ranges of application.
- Standard15 pagesEnglish languagee-Library read for1 day
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesEnglish languagesale 15% off
This document specifies the boundary dimensions and normal class tolerance values for needle roller bearings with machined rings.
This document specifies dimensional and geometrical characteristics, and limit deviations from nominal sizes.
These specifications apply to complete needle roller bearings and to bearings without inner ring.
- Standard26 pagesEnglish languagee-Library read for1 day
- Standard21 pagesEnglish languagesale 15% off
- Standard22 pagesFrench languagesale 15% off
This document defines terms applied in the field of rolling bearings and their technology.
This document includes terms related to all types of rolling bearings wherein the principal degree of freedom is continuous rotation around an axis enabled by an ordered set of rolling elements between two circular raceways such that loads can be transmitted between them in a particular range of either radial or axial directions, or both. This document also includes accessories to these products.
The following types of terms are not included:
— terms specified in ISO 76, ISO 281 and ISO 1132-1;
— terms which are narrowly applied in only one specialized rolling bearing International Standard.
- Standard344 pagesEnglish languagesale 15% off
- Standard111 pagesEnglish languagee-Library read for1 day
- Standard344 pagesFrench languagesale 15% off
- Standard344 pagesEnglish, French and Russian languagesale 15% off
- Standard344 pagesRussian languagesale 15% off
This document specifies tolerances, design features and test methods for thin-walled half bearings with integral flange up to an outside diameter of Do = 250 mm and without flange up to an outside diameter of Do = 500 mm. Due to the variety of design, it is, however, not possible to standardize the dimensions of the half bearings.
Half bearings according to this document are predominantly used in reciprocating machinery and consist of a steel backing and one or more bearing metal layers on the inside.
In reciprocating machinery, flanged half bearings can be used in connection with half bearings without flange.
Alternatively, to serve as a flanged half bearing, it is possible to use a half bearing without flange together with two separate half thrust washers according to ISO 6526, or a half bearing with assembled flanges.
NOTE All dimensions and tolerances are given in millimetres.
- Standard27 pagesEnglish languagee-Library read for1 day
- Standard23 pagesEnglish languagesale 15% off
This document specifies the boundary dimensions for radial needle roller and cage assemblies.
In addition, this document gives the tolerances for the cage width and method of functional gauging of bore diameter of needle roller complement.
Informative values for the tolerances of shaft raceway, housing raceway and raceway widths are given in Annex A.
Functional gauging of radial needle roller and cage assembly is given in Annex B.
- Standard15 pagesEnglish languagee-Library read for1 day
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
This document specifies the boundary dimensions, other relevant dimensions and the corresponding tolerances of accessories for sleeve type linear ball bearings which are specified in ISO 10285.
This document applies to:
— the following housings:
— closed and adjustable flangeless housings for series 5 sleeve type linear ball bearings,
— open and open adjustable flangeless housings for series 5 sleeve type linear ball bearings;
— standard height shaft support rails for series 5 sleeve type linear ball bearings;
— flanged shaft support blocks for series 5 sleeve type linear ball bearings;
— solid and tubular shafts for series 5 sleeve type linear ball bearings.
- Standard22 pagesEnglish languagee-Library read for1 day
- Standard17 pagesEnglish languagesale 15% off
- Standard17 pagesEnglish languagesale 15% off
- Standard17 pagesFrench languagesale 15% off
- Standard17 pagesFrench languagesale 15% off
This document defines, describes and classifies the characteristics of damage occurring in service in hydrodynamically lubricated metallic plain bearings due to cavitation erosion, together with possible countermeasures. It assists in understanding the various characteristic forms of damage which can occur.
Consideration is restricted to damage which has a well-defined appearance and which can be attributed to particular causes with a high degree of certainty. Various appearances are illustrated with photographs and diagrams.
- Standard23 pagesEnglish languagee-Library read for1 day
- Standard18 pagesEnglish languagesale 15% off
- Standard18 pagesEnglish languagesale 15% off
This document specifies flange dimensions of single-row radial ball bearings with flanged outer ring and single-row angular contact ball bearings with flanged outer ring. All other boundary dimensions for complete bearings are given in ISO 15.
Tolerances for the flanges are given in ISO 492.
- Standard10 pagesEnglish languagee-Library read for1 day
- Standard6 pagesEnglish languagesale 15% off
- Standard6 pagesFrench languagesale 15% off
This document defines requirements for the testing of lubricated plain journal bearings in test rigs, running under conditions of hydrodynamic or mixed lubrication, during bearing and/or material development. It deals with both static and dynamic loading in solid and multi-layer journal bearings. It is not applicable to the testing of dynamic characteristics of lubricant film in journal bearings applied in calculation of vibration and stability of turbo-rotors.
NOTE It is intended that further details of test procedures be established when carrying out testing based on this document.
- Standard20 pagesEnglish languagee-Library read for1 day
- Standard15 pagesEnglish languagesale 15% off
- Standard15 pagesEnglish languagesale 15% off
This document specifies the method of surface modification that improves the friction characteristics of plain bearings, by press fitting a solid lubricant onto the bearing metal surface mechanically in combination with processing a lot of micro dimples on the surface.
- Technical specification12 pagesEnglish languagesale 15% off
- Technical specification12 pagesFrench languagesale 15% off
This document defines terms applied in the field of rolling bearings and their technology. This document includes terms related to all types of rolling bearings wherein the principal degree of freedom is continuous rotation around an axis enabled by an ordered set of rolling elements between two circular raceways such that loads can be transmitted between them in a particular range of either radial or axial directions, or both. This document also includes accessories to these products. The following types of terms are not included: — terms specified in ISO 76, ISO 281 and ISO 1132-1; — terms which are narrowly applied in only one specialized rolling bearing International Standard.
- Standard344 pagesEnglish languagesale 15% off
- Standard111 pagesEnglish languagee-Library read for1 day
- Standard344 pagesFrench languagesale 15% off
- Standard344 pagesEnglish, French and Russian languagesale 15% off
- Standard344 pagesRussian languagesale 15% off
This document specifies the boundary dimensions and normal class tolerance values for needle roller bearings with machined rings. This document specifies dimensional and geometrical characteristics, and limit deviations from nominal sizes. These specifications apply to complete needle roller bearings and to bearings without inner ring.
- Standard26 pagesEnglish languagee-Library read for1 day
- Standard21 pagesEnglish languagesale 15% off
- Standard22 pagesFrench languagesale 15% off
This document specifies the boundary dimensions and preferred dimensions to be used for drawn cup needle roller bearings without inner ring as well as the minimum chamfer dimension limits. This document also specifies the closed end thickness dimensions for bearings with one closed end. In addition, this document specifies dimensional tolerances for the needle roller complement bore diameter and tolerances for the drawn cup width.
- Standard15 pagesEnglish languagesale 15% off
- Standard15 pagesFrench languagesale 15% off
ABSTRACT
This specification covers basic characteristics required for porous laminated epoxy materials intended for use as instrument and thin-section ball-bearing retainers (cages), as well as the methods of determining these characteristics. It provides guidance with respect to material and test conditioning, performance, verification, and packaging and package marking.
SCOPE
1.1 This specification covers basic characteristics required for porous laminated Epoxy materials intended for use as instrument and thin-section ball-bearing retainers (cages) and the methods of determining these characteristics.
1.2 Forms—Sheets and Rolled Tubes are recommended forms of laminated material covered by this specification.
1.3 Intended Use—Materials produced to this specification are intended for use as ball bearing retainers (cages). Temperature range is limited to 284 °F (140 °C) and below.
1.4 Units—The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
- Technical specification6 pagesEnglish languagesale 15% off