Needle roller bearings - SKF

1 Needle roller bearings SKF is a registered trademark of the SKF Group. SKF Group 2015 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained PSD/P1 06003/3 EN September 2015 Certain image(s) used under license from of bearing selection and application .. 13 Needle roller and cage assemblies .. 57 Drawn cup Needle roller bearings .. 75 Needle roller bearings with machined rings .. 97 Alignment Needle roller bearings .

2 141 Needle roller thrust bearings and bearing washers .. 151 Combined Needle roller bearings .. 169 Needle roller bearing components .. 195 Track runner bearings .. 215198765432 ContentsThis is SKF .. 4 SKF the knowledge engineering company .. 6 Foreword .. 9 Unit conversions .. 111 Principles of bearing selection and application .. 13 Bearing terminology .. 14 Bearing types .. 17 Bearing life and loads .. 32 Friction .. 34 Speeds .. 35 Bearing data general .. 36 Application of bearings .. 48 Lubrication .. 522 Needle roller and cage assemblies .. 57 Product Needle roller and cage assemblies .. 643 Drawn cup Needle roller bearings .. 75 Product Drawn cup Needle roller bearings .

3 824 Needle roller bearings with machined rings .. 97 Product Needle roller bearings with machined rings with flanges, without an inner ring .. Needle roller bearings with machined rings with flanges, with an inner ring .. Needle roller bearings with machined rings without flanges, without an inner ring .. Needle roller bearings with machined rings without flanges, with an inner ring .. 1385 Alignment Needle roller bearings .. 141 Product Alignment Needle roller bearings without an inner ring .. Alignment Needle roller bearings with an inner ring .. 1486 Needle roller thrust bearings and bearing washers .. 151 Product Needle roller and cage thrust assemblies and appropriate washers .. Needle roller thrust bearings with a centring spigot and appropriate washers.

4 1667 Combined Needle roller bearings .. 169 Product Needle roller / angular contact ball bearings .. Needle roller / thrust ball bearings , full complement thrust bearing .. Needle roller / thrust ball bearings , thrust bearing with a cage .. Needle roller / cylindrical roller thrust bearings .. 1928 Needle roller bearing components .. 195 Product Needle roller bearing inner rings .. Needle rollers .. Radial shaft seals with low cross sectional height .. 2129 Track runner bearings .. 215 Product Support rollers without flange rings, without an inner ring .. Support rollers without flange rings, with an inner ring .. Support rollers with flange rings, with an inner ring .. Cam followers.

5 252 Product index .. 2583 This is SKFFrom one simple but inspired solution to a mis-alignment problem in a textile mill in Sweden, and fifteen employees in 1907, SKF has grown to become a global industrial knowledge leader. Over the years, we have built on our expertise in bearings , extending it to seals, mecha tronics, services and lubrication systems. Our know-ledge network includes 46 000 employees, 15 000 distributor partners, offices in more than 130 countries, and a growing number of SKF Solution Factory sites around the world. Research and development We have hands-on experience in over forty industries based on our employees knowledge of real life conditions. In addition, our world-leading experts and university partners pioneer advanced theoretical research and development in areas including tribology, condition monitor-ing, asset management and bearing life theory.

6 Our ongoing commitment to research and devel opment helps us keep our customers at the forefront of their industries. SKF Solution Factory makes SKF knowledge and manu facturing expertise available locally to provide unique solu-tions and services to our the toughest challenges Our network of knowledge and experience, along with our understanding of how our core technologies can be combined, helps us create innovative solutions that meet the toughest of challenges. We work closely with our customers throughout the asset life cycle, helping them to profitably and re spon sibly grow their for a sustainable future Since 2005, SKF has worked to reduce the negative environmental impact from our oper-ations and those of our suppliers. Our continu-ing technology development resulted in the introduction of the SKF BeyondZero portfolio of prod ucts and services which improve efficiency and reduce energy losses, as well as enable new technol ogies har nessing wind, solar and ocean power.

7 This combined approach helps reduce the en vir on mental impact both in our oper-ations and our customers oper with SKF IT and logis-tics systems and application experts, SKF Authorized Distributors deliver a valuable mix of product and application knowledge to customers knowledge your successSKF Life Cycle management is how we combine our technology platforms and advanced ser vices, and apply them at each stage of the asset life cycle, to help our cus tomers to be more success ful, sustainable and closely with you Our objective is to help our customers improve productivity, minimize main ten ance, achieve higher energy and resource efficiency, and opti-mize designs for long service life and reliability. Innovative solutions Whether the application is linear or rotary or a combination, SKF engineers can work with you at each stage of the asset life cycle to improve machine performance by looking at the entire application.

8 This approach doesn t just focus on individual components like bearings or seals. It looks at the whole application to see how each com po nent interacts with each optimization and verificationSKF can work with you to optimize current or new designs with proprietary 3-D mod ell ing software that can also be used as a virtual test rig to confirm the integrity of the design. SKF the kno wledge engineering companySpecifi cationDesign and developManufacture and testInstall and commissionOperate and monitorMaintain and repairSKF Life Cycle Management6 BearingsSKF is the world leader in the design, development and manufacture of high performance rolling bearings , plain bearings , bearing units and maintenanceCondition monitoring technologies and main tenance services from SKF can help minimize unplanned downtime, improve operational efficiency and reduce maintenance solutionsSKF offers standard seals and custom engineered sealing solutions to increase uptime, improve machine reliability, reduce friction and power losses, and extend lubricant fly-by-wire systems for aircraft and drive-by-wire systems for off-road.

9 Agricultural and forklift applications replace heavy, grease or oil consuming mechanical and hydraulic solutionsFrom specialized lubricants to state-of-the-art lubrication systems and lubrication management ser vices, lubrication solutions from SKF can help to reduce lubrication related downtime and lubricant and motion controlWith a wide assortment of products from actu ators and ball screws to profile rail guides SKF can work with you to solve your most pressing linear system bearing arrangements have limited radial space, but require bearings having a high load carrying capacity and a high degree of stiffness. SKF Needle roller bearings with their low cross section fulfil these requirements. They also pro-vide an economical solution to these challenges if the shaft or housing bore can serve as raceways.

10 SKF track runner bearings are an excellent choice for all types of cam drives, tracks, con-veyor systems etc. where guidance is motorsport applications, SKF Racing has been using customized, high-performance Needle roller bearings for many years. These special Needle roller bearings are used in the most demanding Formula One applications, such as gearboxes. Using different advanced materials, coatings and designs, SKF s advanced engineering knowledge can improve the per-formance and reliability of virtually any application. SKF supplies Needle roller bearings as well as track runner bearings in many designs, series and sizes, which make them appropriate for various operating catalogue presents the current standard assortment of SKF Needle roller bearings , track runner bearings and radial shaft seals with low cross sectional height.