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TIMKENPRODUCTS AND SERVICESPOWER TRANSMISSIONCOMPONENTS AND SYSTEMSTimken offers an expanding range of power transmissioncomponents including seals, couplings and engineered chain.Extreme temperatures and high contamination levels candisable your equipment and significantly lower productivity.Timken develops seals using advanced material and processsolutions that help protect machinery and minimize plantdowntime. We offer a comprehensive line of large-bore oil andgrease seals, and metallic and non-metallic bearing isolators.Timken Quick-Flex couplings are highly durable, yet needminimal maintenance. They are easy to install and require nolubrication. The couplings are designed to connect motorsand gearboxes with other moving equipment with capacityto transmit the same or more torque than a gear coupling inthe same dimensions. The Quick-Flex coupling's innovativedesign utilizes an advanced elastomeric element to transmitthe torque and therefore eliminates any interference betweencoupling hubs which can damage equipment.Timken manufactures precision roller chains that are designedto meet demanding steel industry applications. We buildchains to precise specifications for strength and maximumwear life. The offering includes acomplete line of roller chains,attachment chains andengineered conveyorchains.LUBRICATIONTimken lubricants reduce friction, prevent wear andprotect bearing surfaces from corrosion. We offer a wideselection of lubricants, including Timken Mill Grease, whichwe formulated to perform in the difficult roll neck bearingenvironment. Timken single- and multi-point lubricators andlubrication delivery devices help maintenanceprofessionals simplify theirlubrication practices,saving time andmoney.CONDITION MONITORINGPowerful diagnostic tools from Timken are designed todetect potential bearing failure before it occurs. A variety ofhandheld devices and online options – including our ultraaccurate Online Intelligence System – lets you monitor bearingcondition, lubrication quality and machine vibration (eitherperiodically or continuously) for increased productivity, safetyand peace of mind.TIMKEN THRUST BEARING CATALOG 7

TIMKENPRODUCTS AND SERVICESTRAININGWe offer industry-specific training programs designed for plantprofessionals, as well as on-site customized training to meetyour specific needs. Our training programs are available atselect locations around the world and cover every phase ofbearing performance. Class time is balanced with extensivehands-on training and tours of Timken facilities.MAINTENANCE TOOLSTimken maintenance tools may extend bearing life byfacilitating proper installation, removal and service. They alsohelp simplify maintenance practices. We provide inductionheaters, impact fitting tools, and hydraulic and mechanicalpullers.SERVICESUsed bearings and related components often can be returnedto their original specifications with less time and costs thanpurchasing new. We offer complete remanufacture andreconditioning services for many components, includingbearings, chocks, housings, rolls and more.Our gearbox repair services are globally recognized for powertransmission solutions in heavy industrial markets, repairingvirtually any large gearbox make or model, with on-siteemergency breakdown service available if needed.Timken offers a full range of maintenance and reconditioningservices through our remanufacturing and repair operations.Using these services can lead to improved plant efficiency andreduced overall production costs.8TIMKEN THRUST BEARING CATALOG

TIMKENHOW TO USE THIS CATALOGHOW TO USE THIS CATALOGWe designed this catalog to help you find the Timken bearingsbest suited to your equipment needs and specifications.The product tables list many of the bearing types that arespecifically used in thrust positions. For other bearingtypes, please refer to the respective Timken product catalogreference.Timken offers an extensive range of bearings and accessoriesin both imperial and metric sizes. For your convenience, sizeranges are indicated in millimeters and inches. Contact yourTimken engineer to learn more about our complete line for thespecial needs of your application.This publication contains dimensions, tolerances and loadratings, as well as engineering sections describing mountingand fitting practices for shafts and housings, internalclearances, materials and other bearing features. It providesvaluable assistance in the initial consideration of the typeand characteristics of the bearings that may best suit yourparticular needs.ISO and ANSI/ABMA, as used in this publication, refer tothe International Organization for Standardization and theAmerican National Standards Institute/American BearingManufacturers Association.TIMKEN THRUST BEARING CATALOG 9

TIMKENSHELF LIFE AND STORAGESHELF LIFE AND STORAGE OF GREASE-LUBRICATEDBEARINGS AND COMPONENTSTo help you get the most value from our products, Timken provides guidelines for the shelflife of grease-lubricated ball and roller bearings, components and assemblies. Shelf lifeinformation is based on Timken and industry test data and experience.SHELF LIFEEuropean REACH ComplianceShelf life should be distinguished from lubricated bearing/component design life as follows:Timken lubricants, greases and similar products sold instandalone containers or delivery systems are subject to theEuropean 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, pleasecontact your Timken engineer.Shelf 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, humidity andextended storage.Shelf life values, available from Timken, represent a maximumlimit and assume adherence to the storage and handlingguidelines suggested in this catalog or by a Timken associate.Deviation from the Timken storage and handling guidelines mayreduce shelf life. Any specification or operating practice thatdefines a shorter shelf life should be used.Timken cannot anticipate the performance of the greaselubricant after the bearing or component is installed or placedin service.TIMKEN IS NOT RESPONSIBLE FOR THE SHELF LIFEOF ANY BEARING/COMPONENT LUBRICATED BYANOTHER PARTY.STORAGETimken suggests the following storage guidelines for ourfinished products (bearings, components and assemblies,referred to as “products”): Unless 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.10TIMKEN BALL BEARING CATALOG

TIMKENSHELF LIFE AND STORAGEA When removing a product that isnot individually packaged from abulk pack container, the containershould be resealed immediately afterthe product is removed. Do not use product that has exceededits shelf life as defined in the Timken shelflife guidelines statement. The storage area temperature should bemaintained between 0º C (32º F) and 40º C (104º F);temperature fluctuations should be minimized. The relative humidity should be maintained below 60 percent and the surfaces should be dry. The storage area should be kept free from airborne contaminants such as, but not limited to, dust, dirt, harmfulvapors, 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.Most bearing components typically ship protected with acorrosion-preventive compound that is not a lubricant. Thesecomponents may be used in oil-lubricated applications withoutremoval of the corrosion-preventive compound. When usingsome specialized grease lubrications, we advise you to removethe corrosion-preventive compound before packing thebearing components with suitable grease.WARNINGFailure to observe the following warningscould create a risk of death or serious injury.Never spin a bearing with compressed air.The components may be forcefully expelled.Proper maintenance and handling practices are critical.Always follow installation instructions andmaintain proper lubrication.NOTENever use steam or hot water when cleaning the bearingsbecause these methods can create rust or corrosion.Never expose any surface of a bearing to the flame of a torch.Do not heat bearing beyond 149 C (300 F)TIMKEN THRUST BEARING CATALOG 11

TIMKENWARNINGS AND CAUTIONSWARNINGFailure to observe the following warningscould create a risk of death or serious injury.Proper maintenance and handling practices are critical.Always follow installation instructions and maintainproper lubrication.Overheated bearings can ignite explosive atmospheres.Special care must be taken to properly select, install,maintain, and lubricate housed unit bearings that are used inor near atmospheres that may contain explosive levelsof combustible gases or accumulations of dust such as fromgrain, coal, or other combustible materials.If hammer and bar are used for installation or removal ofa part, use a mild steel bar (e.g., 1010 or 1020 grade). Mildsteel bars are less likely to cause release of high-speedfragments from the hammer, bar or the part being removed.Warnings for this product line are in this catalog andposted on http://www.timken.com/warnings.NOTEDo not attempt to disassemble unitized bearings.Components may become damaged and affect the performanceand service life of the bearing.Do not mix components of matched assemblies. Mixingcomponents can reduce the service life of the bearing.NOT TO BE USED AS A DESIGN MANUAL.This is not a manual for the selection of bearings for newapplications. Whenever it is necessary to selectTimken bearings for new applications consult the TimkenEngineering Manual (order no. 10424) or get in touch with thenearest office of The Timken Company.DISCLAIMERThis catalog is provided solely to give you analysis tools anddata to assist you in your product selection. Product performanceis affected by many factors beyond the control of Timken.Therefore, the suitability and feasibility of all productselection must be validated by you.Timken products are sold subject to Timken’s termsand conditions of sale, which include its limitedwarranty and remedy, which terms may be found lease consult with your Timken engineer for moreinformation and assistance.Every reasonable effort has been made to ensure the accuracyof the information in this writing, but no liability is acceptedfor errors, omissions or for any other reason.12TIMKEN THRUST BEARING CATALOG COMPLIANCETo view the complete engineering catalog, please visit www.timken.com. To order the catalog, please contact your Timkenengineer and request a copy of the Timken Engineering Manual(order number 10424).European REACH compliance Timken-branded lubricants, greasesand similar products sold in stand-alone containers or deliverysystems are subject to the European REACH (Registration,Evaluation, Authorization and Restriction of CHemicals) directive.For import into the European Union, Timken can sell and provideonly those lubricants and greases that are registered with ECHA(European CHemical Agency). For further information, pleasecontact your Timken engineer.The Timken Company products shown in this catalog may bedirectly, or indirectly subject to a number of regulatory standardsand directives originating from authorities in the USA, EuropeanUnion, and around the world, including: REACH (EC 1907/2006,RoHS (2011/65/EU), ATEX (94/9/EC), ‘CE’ MARKING (93/68/EEC),CONFLICT MINERALS (Section 1502 of the Dodd-Frank Wall StreetReform and Consumer Protection Act).For any questions or concerns regarding the compliancy orapplicability of Timken products to these, or other unspecifiedstandards, please contact your Timken sales engineer or customerservices representative.Updates are made periodically to this catalog. Visit www.timken.comfor the most recent version of the Timken Thrust Bearing Catalog.

ENGINEERINGENGINEERINGThis engineering section is not intendedto be comprehensive, but does serve asa useful guide in thrust bearing selection.To view the complete engineering catalog,please visit www.timken.com. To order thecatalog, please contact your Timken engineerand request a copy of the Timken EngineeringManual (order no.10424).The following topics are covered within this engineeringsection:Thrust Bearing Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Bearing Reactions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Bearing Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22System Life and Weighted Average Load and Life . . . . . . . . . . .28Bearing Tolerances, Metric and Inch Systems . . . . . . . . . . . . . . 29Mounting Design, Fitting Practice and Setting. . . . . . . . . . . . . . . 37Bearing Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55To view more Timken catalogs, goto www.timken.com/catalogsfor interactive versions, or todownload a catalog app for yoursmart phone or mobile devicescan the QR code or go totimkencatalogs.squawqr.com.TIMKEN THRUST BEARING CATALOG 13

ENGINEERINGTHRUST BEARING TYPESTHRUST BEARING TYPESStandard types of thrust bearings manufactured by Timkeninclude:TVL – Single-row angular contact thrust ball bearing.DTVL – Double-row (two direction) angular contact thrustball bearing.ANGULAR CONTACT THRUST BALLBEARINGSThrust ball bearings are used for lighter loads and higher speedsthan thrust roller bearings.TP – Thrust cylindrical roller bearing.TVLTPS – Self-aligning thrust cylindrical roller bearing.Type TVL is a separable angular contact ball bearing primarilydesigned for unidirectional thrust loads. The angular contactdesign, however, will accommodate combined radial and thrustloads since the loads are transmitted angularly through the balls.TSR – Thrust spherical roller bearing.TTHD – Heavy-duty thrust tapered roller bearing with twotapered raceways. Variants include: TTHDSX – where one tapered raceway has a convexouter surface for static alignment (SX). TTHDSV – where one tapered raceway has a concaveouter surface for static alignment (SV).TTHDFL – Heavy-duty thrust tapered roller bearing having oneflat and one tapered raceway. Variants include: TTHDFLSA – where the flat raceway is made of twoself-aligning washers (SA). TTHDFLSX – where the tapered raceway has a convexouter surface for static alignment (SX). TTHDFLSV – where the tapered raceway has a concaveouter surface for static alignment (SV).TTSP – Steering pivot thrust tapered roller bearing, off-apexdesign.TTC – Steering pivot thrust tapered roller bearing, fullcomplement (cageless).TTD – Double-acting thrust tapered roller bearing.TXR – Crossed roller bearing.Each type is designed to take thrust loads. Types TVL, DTVL,TSR and TXR can accommodate radial loads as well. All typesreflect advanced design concepts, with large rolling elements formaximum capacity. For some thrust roller bearings, controlledcontour rollers are used to ensure uniform, full-length contactbetween rollers and raceways resulting in maximum capacity.Thrust bearings should operate under continuous load forsatisfactory performance.14TIMKEN THRUST BEARING CATALOG The bearing has two hardened and ground steel rings withball grooves and a one-piece brass cage that spaces the ballcomplement. The larger ring is called the outer ring, and thesmaller the inner ring. Timken standard tolerances for type TVLbearings are equivalent to ABEC 1 where applicable, but highergrades of precision are available.Usually the inner ring is the rotating member and is shaft mounted.The outer ring is normally stationary and should be mounted withO.D. clearance to allow the bearing to assume its proper operatingposition. If combined loads exist, the outer ring must be radiallylocated in the housing.Type TVL bearings should always be operated under thrust load.Normally, this presents no problem as the bearing is usuallyapplied on vertical shafts in oil field rotary tables and machinetool indexing tables. If constant thrust load is not present, it shouldbe imposed by springs or other built-in devices.Low friction, cool running and quiet operation are advantages ofTVL bearings, which may be operated at relatively high speeds.TVL bearings also are less sensitive to misalignment than othertypes of rigid thrust bearings.Fig. 1. Type TVL.

ENGINEERINGTHRUST BEARING TYPESDTVLTPSType DTVL is similar in design to TVL except that the DTVL hasan additional ring and ball complement permitting it to carrymoderate thrust in one direction and light thrust in the otherdirection.Type TPS bearings have a lower race comprised of two rings, withthe contacting faces spherically ground to provide an aligningfeature. As a result, the TPS bearing is self-adjusting to staticmisalignment. Its use is not, however, suggested for operatingconditions where alignment is continuously changing (dynamicmisalignment).Fig. 2. Type DTVL.THRUST CYLINDRICAL ROLLERBEARINGSThrust cylindrical roller bearings are designed to operate underheavy thrust loads at moderate speeds. Standard versions ofthese bearings can be operated at peripheral bearing O.D. speedsup to approximately 15 m/s (3000 fpm). Higher operating speedscan be attained with the incorporation of special design features.Consult your Timken engineer for these applications.For applications where thrust loads are high, lubricants withextreme-pressure (EP) additives should be used. The preferredinlet location for the lubricant is at the bearing bore as centrifugalforce will cause the lubricant to distribute radially toward therollers.Two types of thrust cylindrical roller bearings, TP and TPS, areavailable.TPType TP thrust cylindrical roller bearings have two hardened andground raceways and a window-type steel cage which retainsone or more profiled rollers per pocket. When multiple rollers areused in each pocket, they are differe

TIMKEN 6 TIMKEN THRUST BEARING CATALOG Ball bearings - Ball bearings are used extensively in auxiliary applications that have light loads and/or high-speed conditions. Timken offers a range of radial, thrust and angular contact ball bearings in both metric and inch sizes. Please contact your Timken engineer for detailed informa-