Page 15 - Analysis and Design of Machine Elements

10.4.5.2 Locating and Fastening Elements on a Shaft 274 Contents xiii
10.4.5.3 Machinability and Assemblability of Shafts 275
10.4.6 Design Cases 277
References 284
Problems 284

11 Rolling Contact Bearings 291
11.1 Introduction 292
11.1.1 Applications, Characteristics and Structures 292
11.1.2 Characteristic Factors of Rolling Contact Bearings 293
11.1.2.1 Internal Clearance 293
11.1.2.2 Contact Angle 294
11.1.2.3 Angular Deviation 294
11.1.3 Types of Rolling Contact Bearings and Their Selection 295
11.1.3.1 Classification of Rolling Contact Bearings 295
11.1.3.2 Types of Rolling Contact Bearings 295
11.1.3.3 Bearing Type Selection 296
11.1.4 Designation of Rolling Contact Bearings 297
11.2 Working Condition Analysis 298
11.2.1 Kinematic Analysis 298
11.2.2 Force Analysis 299
11.2.2.1 Thrust Bearings (50000, 290000) 299
11.2.2.2 Radial Bearings (60000, 10000, 20000, N, NA) 299
11.2.2.3 Angular Contact Bearings (70000, 30000) 299
11.2.3 Stress Analysis 303
11.2.4 Potential Failure Modes 304
11.3 Life Expectancy and Load Carrying Capacities 305
11.3.1 Life Prediction under Constant Loads 305
11.3.1.1 Relations Between Bearing Load and Bearing Life 305
11.3.1.2 Modification of Life Prediction 306
11.3.1.3 Rated Life at Different Reliability 307
11.3.2 Life Prediction under Variable Loads 308
11.3.3 Static Strength Analysis 309
11.4 Design of Bearing Support Systems 310
11.4.1 Introduction 310
11.4.2 Bearing Selection 310
11.4.3 Design Procedures and Guidelines 311
11.4.4 Practical Considerations in the Application of Bearings 311
11.4.4.1 Assembly and Disassembly 311
11.4.4.2 Axial Positioning 311
11.4.4.3 Axial Retaining 313
11.4.4.4 Axial Adjustment 314
11.4.4.5 Rolling Bearing Fits 314
11.4.4.6 Preloading 314
11.4.4.7 Lubrication 314
11.4.4.8 Sealing 315
11.4.5 Design Cases 316