احبتى فى الله معى اليوم كتاب
Ball and Roller Bearings
Contents
1. Classification and Characteristics of Rolling Bearings ......................................................... A-6
1.1 Rolling bearing construction .............................................................................................................. A-6
1.2 Classification of rolling bearings ........................................................................................................ A-6
1.3 Characteristics of rolling bearings ..................................................................................................... A-8
2. Bearing Selection .................................................................................................................. A-10
2.1 Operating conditions and environment ........................................................................................... A-10
2.2 Demand factors ............................................................................................................................... A-10
2.3 Design selection .............................................................................................................................. A-10
2.4 Arrangement selection .................................................................................................................... A-10
2.5 Dimension selection ........................................................................................................................ A-11
2.6 Specification determination ............................................................................................................. A-11
2.7 Handling methods ........................................................................................................................... A-11
3. Boundary Dimensions and Bearing Number Codes ........................................................... A-16
3.1 Boundary dimensions ....................................................................................................................... A-16
3.2 Bearing numbers .............................................................................................................................. A-18
4. Bearing Tolerances ............................................................................................................... A-22
5. Load Rating and Life ............................................................................................................ A-40
5.1 Bearing life ...................................................................................................................................... A-40
5.2 Basic rated life and basic dynamic load rating ................................................................................. A-40
5.3 Machine applications and requisite life ............................................................................................. A-42
5.4 Adjusted life rating factor .................................................................................................................. A-42
5.5 Basic static load rating ..................................................................................................................... A-43
5.6 Allowable static equivalent load ........................................................................................................ A-43
6. Bearing Load Calculation ..................................................................................................... A-46
6.1 Load acting on shafts ....................................................................................................................... A-46
6.2 Bearing load distribution ................................................................................................................... A-48
6.3 Mean load ........................................................................................................................................ A-49
6.4 Equivalent load ................................................................................................................................ A-50
6.5 Rated life and load calculation examples ......................................................................................... A-51
7. Bearing Fits ........................................................................................................................... A-54
7.1 Interference ..................................................................................................................................... A-54
7.2 Calculation of interference ................................................................................................................ A-54
7.3 Fit selection ..................................................................................................................................... A-55
7.4 Recommended fits .............................8. Bearing Internal Clearance and Preload .............................................................................. A-64
8.1 Bearing internal clearance ............................................................................................................... A-64
8.2 Internal clearance selection ............................................................................................................. A-64
8.3 Bearing internal clearance selection standards ............................................................................... A-65
8.4 Preload ............................................................................................................................................ A-74
9. Allowable Speed ................................................................................................................... A-77
10. Friction and Temperature Rise ............................................................................................. A-78
10.1 Friction ............................................................................................................................................. A-78
10.2 Temperature rise .............................................................................................................................. A-78
11. Lubrication ............................................................................................................................ A-79
11.1 Lubrication of rolling bearings .......................................................................................................... A-79
11.2 Grease lubrication ............................................................................................................................ A-79
11.3 Oil Lubrication ................................................................................................................................. A-82
12. Sealing Devices .................................................................................................................... A-88
12.1 Non-Contact Seals ........................................................................................................................... A-88
12.2 Contact Seals .................................................................................................................................. A-89
12.3 Combination seals ............................................................................................................................ A-91
13. Bearing Materials .................................................................................................................. A-92
13.1 Ring and rolling element materials ................................................................................................... A-92
13.2 Cage materials ................................................................................................................................ A-93
14. Shaft and Housing Design .................................................................................................... A-94
14.1 Fixing of bearings ............................................................................................................................. A-94
14.2 Bearing fitting dimensions ................................................................................................................ A-95
14.3 Shaft and housing accuracy ............................................................................................................. A-96
15. Bearing Handling .................................................................................................................. A-97
15.1 Storage ............................................................................................................................................ A-97
15.2 Fitting ............................................................................................................................................... A-97
15.3 Clearance adjustment .................................................................................................................... A-100
15.4 Running test .................................................................................................................................. A-101
15.5 Dismounting .................................................................................................................................. A-101
16. Bearing Damage and Corrective Measures ....................................................................... A-104
Bearing Dimension Tables ............................................................................................................. B-6
Locknuts, Lockwashers and Lockplates .................................................................................. B-245
Conversions Tables: inch-mm, SI-Customary units ................................................................... B-262.............................................................................................. A-56
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