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Aerospace Design Guide for Precision Metric Ball and Cylindrical Roller Bearings

Aerospace Design Guide for Precision Metric Ball and Cylindrical Roller Bearings
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Aerospace Design Guide for Precision Metric Ball and Cylindrical Roller Bearings

INDEX INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 BASIC DESIGN CONSIDERATIONS Bearing design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Construction selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Size and chassis selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Special designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 CYLINDRICAL ROLLER BEARINGS Basic construction types . . . . . . . . . . . . . . . . . . . . . ....

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AEROSPACE DESIGN GUIDE The world turns to Timken for innovation to move ahead of the competition. Our contributions to advancing work and living standards – through innovations surrounding friction management and power transmission – are invaluable. We have played a role in virtually all major technologies that have shaped our age, from automobile travel to artificial hearts. You’ll find our products wherever you turn – on land, on sea and in space. When customers turn to us, they are turning to a worldwide team. Because of our ability to help their products perform better, customers honor...

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TECHNOLOGY THAT MOVES YOU Today, major industries turn to Timken for our ability to influence the fundamentals of motion through the creation, transfer and control of power. We invest in people, attracting scholars, engineers and specialists from around the world. We invest in tools – computers, manufacturing equipment and state-of-the-art laboratories. We invest in the future by identifying new concepts that will help Timken and our customers make their mark for years to come. Innovation is one of our core values. The return on our technology investment has grown exponentially. We help...

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AEROSPACE DESIGN GUIDE AB BRAND YOU CAN TRUST Timken has built a strong tradition of quality, technology and innovation. A long list of customer certifications provides solid evidence that our products have earned customer trust. As our founder, Henry Timken, said, “Don't set your name to anything you will ever have cause to be ashamed of.” From design to distribution, Timken gives customers expanded options and the security of knowing that each box contains an industry-tested product. ABOUT THE TIMKEN COMPAN COMPANY The Timken Company is a diversified industrial manufacturer of innovative,...

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TIMKEN AEROSPACE SOLUTIONS PRODUCT BREADTH With rapidly expanding capabilities, Timken provides comprehensive life-cycle solutions and delivers unparalleled value for a growing number of aerospace power transmission systems. In addition to our global leadership position in aerospace bearings, we provide an increasing variety of products and services. These range from turbine engine components and gears to complete helicopter transmissions and services, which include part reconditioning and engine overhaul. Timken® Aerospace bearings are designed to meet the performance requirements of...

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AEROSPACE DESIGN GUIDE Gears and associated components deliver power transmission value with a range that includes housings and associated parts such as shafts, adapters, covers, supports and retainers. Turbine engine components from airfoils (nozzles, blades and vanes) to housings, ducts and related components help keep aircraft engines operating at peak performance levels. Gearboxes and transmissions meet the demanding G performance requirements for helicopter engine nose, main, intermediate and tail transmissions, as well as engine accessory gearboxes. Rotorhead assemblies serve critical...

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ABOUT THIS DESIGN GUIDE Timken offers an extensive range of bearings and accessories in both imperial and metric sizes. For your convenience, size ranges are indicated in millimeters and inches. Contact your Timken sales representative to learn more about our complete line for the special needs of your application. USING THIS GUIDE We are committed to providing our customers with maximum service and quality. This publication contains dimensions, tolerances and load ratings as well as an engineering section describing fitting practices for shafts and housings, internal clearances, materials...

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AEROSPACE DESIGN GUIDE AEROSPACE DESIGN GUIDE

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SHELF LIFE AND STORAGE OF GREASE-LUBRICATED BEARINGS AND COMPONENTS Timken guidelines for the shelf life of grease-lubricated rolling bearings, components and assemblies 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 Shelf life of the grease-lubricated bearing/component represents the period of time prior to use or installation. The shelf life is a portion of the anticipated aggregate design life. It is impossible to accurately predict design life due...

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AEROSPACE DESIGN GUIDE BEARING DESIGN FROM APPLICATION TO SPECIFICATION – A LOGICAL APPROACH Physical Parameters This design guide is prepared to help you choose the optimum bearing for your specific application. Too often, bearings are selected without a thorough analysis, resulting in poor performance, unexpected problems and reduced life. To help you avoid these and other issues, Timken developed a four-step procedure to summarize key concepts that should be considered when developing an aerospace bearing specification. The interrelationship of these concepts covers the entire field of...

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Basic Design Considerations Environmental Parameters The environment is a fixed condition of the end product. However, the decision to protect or expose the bearing to the environment is a design option. Temperature, either ambient or internally generated, is a major consideration. The nature of the surrounding media, liquid or gas (for both materials and lubrication), may establish the need for seals, special corrosion protection or supplemental lubrication. Any special environments such as magnetic fields or radiation also should be considered for their design impact. Economic Parameters...

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