Transcription

CYLINDRICAL ROLLER BEARING CATALOGTIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG

MINIATURE AND THIN-SECTIONBEARINGS CATALOG INDEXTIMKEN OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Radial Retainer Sealed Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66HOW TO USE THIS CATALOG. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Radial Retainer Flanged Sealed Bearings . . . . . . . . . . . . . . . . . . . . . 67SHELF LIFE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Thrust Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Pivot Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69ENGINEERINGHigh-Speed Angular-Contact Flanged Non-Separable Bearings 74Bearing Selection Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8High-Speed Angular-Contact Separable Bearings . . . . . . . . . . . . . 76High-Speed Angular-Contact Non-Separable Bearings . . . . . . . . . 70Catalog Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9High-Speed Angular-Contact Flanged Separable Bearings. . . . . . 78Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Modified Dimension Shielded Radial-Retainer Bearings . . . . . . . . 79Separators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Radial Open Full-Complement Bearings . . . . . . . . . . . . . . . . . . . . . . 80Shields and Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Single-Shielded Narrow-Width Radial-Retainer Bearings . . . . . . . 82Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Radial Shielded Full-Complement Bearings . . . . . . . . . . . . . . . . . . . 83Bearing Internal Geometry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Radial Open-Flanged Full-Complement Bearings . . . . . . . . . . . . . 84Lubrication for Miniature and Thin-Section Bearings . . . . . . . . . . 28Radial Shielded-Flanged Full-Complement Bearings . . . . . . . . . . . 85Preload and Deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Radial Retainer Open Bearings – Metric . . . . . . . . . . . . . . . . . . . . . 86Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Radial Retainer Shielded Bearings – Metric . . . . . . . . . . . . . . . . . . . 88Shaft and Housing Fits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Radial Retainer Flanged Open Bearings – Metric . . . . . . . . . . . . . 90Bearing Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Radial Retainer Flanged Shielded Bearings – Metric . . . . . . . . . . . 91Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Packaging/Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43THIN-SECTION BALL BEARINGSBearing Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95Bearing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Conrad Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96Angular-Contact Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103MINIATURE AND INSTRUMENT BALL BEARINGSFractured-Race Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Commercial Series Fractured-Race – Single Row . . . . . . . . . . . . . 112Radial Retainer Open Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Commercial Series Fractured-Race – Double Row . . . . . . . . . . . . 113Radial Retainer Shielded Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Radial Retainer Flanged Open Bearings . . . . . . . . . . . . . . . . . . . . . . 54Radial Retainer Flanged Shielded Bearings . . . . . . . . . . . . . . . . . . . 56Radial Retainer Extended Inner-Ring Open Bearings . . . . . . . . . . . 58Radial Retainer Extended Inner-Ring Shielded Bearings . . . . . . . 60Radial Retainer Flanged Extended Inner-Ring Open Bearings . . . 62Radial Retainer Flanged Extended Inner-RingShielded Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG1

TIMKENOVERVIEWAGROW STRONGER WITH TIMKENEvery day, people around the world count on the strengthof Timken. Our expertise in metallurgy, friction managementand mechanical power transmission helps them accelerateimprovements in productivity and uptime.We supply products and services that can help keep youroperations moving forward, whether you need drivetrain kitsfor commercial vehicles, durable housings for bearings in dirtyenvironments, precision bearings for industrial motion controlsystems, medical and health equipment and precision robotics,or other products and services for your applications.When you choose Timken, you receive more than high-qualityproducts and services: you gain a worldwide team of highlytrained and experienced Timken people committed to workingcollaboratively with you to improve your business.Globally, our 20,000 people provide reliable answers for awide range of operations in manufacturing, mining, medicalequipment, aerospace, transportation, oil and gas – and otherdiverse industries.2TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG

TIMKENOVERVIEWAPRECISION BEARINGS FORMISSION-CRITICAL APPLICATIONSTimken is known for high-quality bearings, engineered steeland mechanical power transmission components. Timken alsodesigns and produces specialized integral assemblies, usingprecision bearings mated with components manufactured toextremely tight tolerances. Integral assemblies provide theultimate bearing solution by avoiding tolerance stack-ups.When precise fits are required for system accuracy, we canmatch fit bearings and components for higher yields and lowercosts. Our integrated assembly designs are offered in a varietyof standard configurations to ABEC9 standards, or customizedto meet specific application requirements.Our 10 technology centers in the Unites States, Europe andAsia help pioneer tomorrow’s innovations with extensivebasic and applied scientific research programs. Throughinternal development and strategic acquisition of innovativecompanies, we continue to expand our portfolio of highlyengineered bearings, steel and components.TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG3

INTRODUCTIONHOW TO USE THIS CATALOGAHOW TO USE THIS CATALOGWe designed this catalog to help you find the Timken bearings best suited to your specifications.Timken offers an extensive range of bearings and accessoriesin both imperial and metric sizes. For your convenience, sizeranges are indicated in inches and millimeters. Contact yourTimken engineer to learn more about our complete product linefor the special needs of your application.This publication contains dimensions, tolerances and loadratings, as well as engineering sections describing fittingpractices for shafts and housings, internal clearances,materials and other bearing features. It provides valuableassistance in the initial consideration of the type andcharacteristics of the bearings that may best suit yourparticular needs.DISCLAIMERThis catalog is provided solely to give you analysis toolsand data to assist you in your product selection. Productperformance is affected by many factors beyond the controlof Timken. Therefore, you must validate the suitability andfeasibility of all product selections for your applications.Timken products are sold subject to Timken terms andconditions of sale, which include our limited warranty andremedy. You can find these at http://www.timken.com/en-us/purchase/Pages/ TermsandConditionsofSale.aspx.Please consult with your Timken engineer for moreinformation and assistance.Every reasonable effort has been made to ensure theaccuracy of the information in this writing, but no liability isaccepted for errors, omissions or for any other reason.4TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOGISO and ANSI/ABMA, as used in this publication, refer tothe International Organization for Standardization and theAmerican National Standards Institute/American BearingManufacturers Association.Updates are made periodically to this catalog. Visitwww.timken.com for the most recent version of the TIMKENMiniature and Thin-Section BearingS Catalog.WARNINGFailure to observe the following warnings couldcreate a risk of death or serious injury.Proper maintenance and handling practices are critical.Always follow installation instructions andmaintain proper lubrication.

INTRODUCTIONSHELF LIFE AND STORAGE OF GREASE-LUBRICATED BEARINGS AND COMPONENTSASHELF LIFE AND STORAGE OF GREASE-LUBRICATEDBEARINGS AND COMPONENTSTimken guidelines for the shelf life of grease-lubricated rolling bearings, components andassemblies are set forth below. Shelf life information is based on test data and experience.Shelf life should be distinguished from lubricated bearing/ component design life as follows:SHELF LIFE POLICYShelf life of the grease-lubricated bearing/componentrepresents the period of time prior to use or installation.The shelf life is a portion of the anticipated aggregate designlife. It is impossible to accurately predict design life due tovariations in lubricant bleed rates, oil migration, operatingconditions, installation conditions, temperature, humidityand extended storage.Shelf life values, available from Timken, represent a maximumlimit – and assume adherence to the Timken suggestedstorage and handling guidelines. Deviations from Timkenstorage and handling guidelines may reduce shelf life. Anyspecification or operating practice that defines a shorter shelflife should be used. Timken cannot anticipate the performanceof the grease lubricant after the bearing or component isinstalled or placed in service.TIMKEN IS NOT RESPONSIBLE FOR THE SHELF LIFEOF ANY BEARING/COMPONENT LUBRICATED BYANOTHER PARTY.EUROPEAN REACH COMPLIANCETimken-branded lubricants, greases and similar products soldin stand-alone containers or delivery systems are subject tothe European REACH (Registration, Evaluation, Authorizationand Restriction of CHemicals) directive. For import into theEuropean Union, Timken can sell and provide only thoselubricants and greases that are registered with ECHA(European CHemical Agency). For further information,please contact your Timken engineer.TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG5

INTRODUCTIONSHELFONE-ROWLIFE METRICAND STORAGEISO SERIESOF GREASE-LUBRICATED BEARINGS AND COMPONENTSSTORAGETimken suggests the following storage guidelines for itsfinished products (bearings, components and assemblies,hereinafter referred to as “Products”): 6Unless directed otherwise by Timken, Products should bekept in their original packaging until they are ready to beplaced into service.Do not remove or alter any labels or stencil markings on thepackaging.Products should be stored in such a way that the packagingis not pierced, crushed or otherwise damaged.After a Product is removed from its packaging, it should beplaced into service as soon as possible.When removing a Product that is not individually packaged from a bulk pack container, the container should beresealed immediately after the Product is removed.Do not use Product that has exceeded its shelf life asdefined in Timken’s shelf life guidelines statement.The storage area temperature should be maintainedbetween 0º C (32º F) and 40º C (104º F); temperaturefluctuations should be minimized.The relative humidity should be maintained below60 percent and the surfaces should be dry.TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG The storage area should be kept free from airbornecontaminants such as, but not limited to, dust, dirt,harmful vapors, etc.The storage area should be isolated from undue vibration.Extreme conditions of any kind should be avoided.Due to the fact that Timken is not familiar with your particularstorage conditions, we strongly suggest following theseguidelines. However, you may be required by circumstancesor applicable government requirements to adhere to stricterstorage requirements.Upon receipt of a bearing shipment, ensure that the bearingsare not removed from their packaging until they are readyfor mounting so that they do not become corroded orcontaminated. Bearings should be stored in an appropriateatmosphere in order that they remain protected for theintended period.Any questions concerning shelf life or storage should bedirected to your local sales office.

ENGINEERINGONE-ROW METRIC ISO SERIESENGINEERINGThe following topics arecovered within this engineeringsection: Bearing designs, specialproducts and materials.Shaft and housing fits.Lubrication recommendations.Testing and inspection.This engineering section is not intended to be comprehensive,but does serve as a useful guide in miniature and thin-sectionbearing selection.To view the complete engineering catalog, please visitwww.timken.com. To order the catalog, please contact yourTimken engineer and request a copy of the Timken EngineeringManual, order number 10424.Bearing Selection Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8Catalog Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Separators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Shields and Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Bearing Internal Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Lubrication for Miniature and Thin-Section Bearings . . . . . . . .28Preload and Deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Load Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34Shaft and Housing Fits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36Bearing Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42Packaging/Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43Bearing Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45Bearing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOG7

RICISOPROCESSSERIESBEARING SELECTION PROCESSTIMKEN BEARINGSBoundary (or fixed) conditions that should be taken intoconsideration include:Timken provides an extensive variety of rolling bearing typesand sizes. Knowing that the bearing is often the most criticalcomponent within a moving assembly, Timken engineers takegreat care to ensure the customer is receiving maximum valuewhen a Timken bearing is selected. Timken provides the properbearing for virtually any motion-control application. With morethan a century of proven experience in bearing technology,Timken is a world leader in the rolling bearing industry. The Timken Company has an experienced, highly skilled staffof trained engineers located around the world to assist thecustomer in bringing new, mechanized products to market. Timkenengineers are a powerful resource for customers to turn to forassistance in the appropriate selection of bearings to meet anyof the following considerations: Acceleration and deceleration levels.Operating temperature range (including extreme limits andthermal cycling).Other environmental factors, such as humidity, fluids,vibration, debris, magnetic fields and vacuum.Spatial constraints.Performance expectations (or desired results) to consider include: Rotational accuracy and repeatability (e.g., serviceprecision level).Higher levels of application complexity. Critical applications where system damage must be avoidedfor all modes of operation.Looking at the key operating parameters of the system will helpfocus on the most viable bearing solution.Potential exposure to personal injury.Typical considerations in application design include optimizationof controllable variables affecting application performance:Higher technical demands or higher levels of applicationrequirements.Costly damage or downtime resulting from the use of aninappropriate bearing for a given task. Because Timken offers so many bearing configurations to servea wide variety of situations, a suggested starting point in theselection process focuses on the assessment of two basiccategories: the first being boundary (or fixed) conditions andthe second being performance expectations (or desired results).Depending on your application, the boundary conditions andperformance expectations will vary. Trade-offs or compromisesmust be addressed so that the final bearing type and size selectedare a reasonable balance of all factors. It is a wise practice toexamine factors critical to the success of the device and prioritizethem.8External loads, including radial, thrust, moment, shock andcombination loads.TIMKEN MINIATURE AND THIN-SECTION BEARINGS CATALOGSystem rigidity (axial or radial stiffness).Application service life.Speed.Bearing design.Bearing shaft and housing arrangement; shaft and housingmaterial.Installation and handling requirements of the bearing, aswell as shaft and housing preparation.Presence of adequate sealing for the exclusion of contaminants; types of foreign materials possible.Lubricating method (lubrication type and delivery system).Maintenance procedures and intervals.Once these conditions and expectations are identified andprioritized, the most appropriate bearing type(s), size(s), andpart number(s) that meet the basic application requirementscan be selected.DISCLAIMERThis catalog is provided solely to give you analysis tools anddata to assist you in your product selection. See page 4 for fulldisclaimer.

ENGINEERINGCATALOGONE-ROWPRODUCTMETRIC ISOSELECTIONSERIESCATALOG PRODUCT SELECTIONTimken produces precision bearings and assemblies in miniature and thin-section series. Thebearings are manufactured with quality steel, tolerances and features that meet demandingapplication challenges. These precision bearings and assemblies are found in surgical anddiagnostic imaging devices, precision pumps, measurement and material handling equipment,as well as guidance, weapons and space applications. Standard sizes range from 0.025 in. to 11in. bore (1 mm to 280 mm bore).RADIAL BALL BEARINGSSize Range:0.0250 in. - 11.0000 in.These deep-groove (Conrad) bearingsallow for handling of radial, thrust in twodirections, or combination of loads. Thedeep-groove bearings are producedto ABEC 5 - ABEC 7 precision levels asstandard catalog offering. These are Fig. 1. Radial balloffered primarily with 440C stainless- bearing.steel rings and balls with a variety of separator types. Inaddition, other material options are ava