This document contains chapter 16 of a textbook. It discusses sliding contact bearings and various types of lubrication including hydrostatic, hydrodynamic, elastohydrodynamic, and thin and thick film lubrication. It covers classification of lubricants and viscosity. Various bearing types are examined like thrust bearings, hydrostatic bearings, and details are given on pressure distribution, viscosity-temperature relationships, and load characteristics of different bearing types. Accompanying figures illustrate concepts like hydrodynamic lubrication, bearing dimensions, oil groove constructions, and lubricating oil structure.

1. Chapter 16
Sliding Contact
Bearings

2. Chapter 16
Lubrication
Hydrostatic Bearing
Hydrodynamic Bearing

3. Chapter 16
Lubrication?
Classification of Lubricants

4. Chapter 16
Elastohydrodynamic
Thin Film
Thick Film
Basic Modes of Lubrication

5. Chapter 16
Elastohydrodynamic
Lubrication

6. Chapter 16
Thin Film OR Boundary Lubrication
(a) Metal to metal Contact
(b) Cluster of molecules

7. Chapter 16
Newton’s Law of Viscosity
Thick Film Lubrication

8. Chapter 16
Unit of Viscosity

9. Chapter 16
Hydrostatic Bearing

10. Chapter 16
Types of Thrust Bearing

11. Chapter 16
Hydrostatic Lubrication (a) Journal at Rest (b) Journal at Full
Speed

12. Chapter 16
Fig. 16.1 Hydrodynamic Lubrication (a) Journal at Rest (b) Journal starts to
Rotate (c) Journal at Full speed

13. Chapter 16
Fig. 16.10
Petroffs equation:

14. Chapter 16
Fig. 16.11 mN/p Curve
Bearing characteristics Number

15. Chapter 16
Viscous flow through slot (a) Rectangular slot
(b) Velocity distribution

16. Chapter 16
Hydrostatic step bearing

17. Chapter 16
Pressure distribution in Hydrostatic bearing

18. Chapter 16
Fig. 16.15

19. Chapter 16
Fig. 16.16

20. Chapter 16
Fig. 16.17 (a) Six pad Bearing (b) Dimensions of pad

21. Chapter 16
Fig. 16.8 Viscosity–Temperature Relationship

22. Chapter 16
Fig. 16.9 Viscosity index

23. Chapter 16
Fig. 16.2 Pressure Distribution in Hydrodynamic Bearing

24. Chapter 16
Fig. 16.3 Full and Partial Bearings

25. Chapter 16
Fig. 16.18 Conical thrust bearing

26. Chapter 16
Fig. 16.19 Variation of Power losses

27. Chapter 16
Fig. 16.20 Fluid element in X-Y plane

28. Chapter 16
Fig. 16.21 Fluid element in Y-Z plane

29. Chapter 16
Fig. 16.22 Equilibrium of Forces in X direction

30. Chapter 16
Fig. 16.23 Equilibrium of Forces in Z direction

31. Chapter 16
Fig. 16.24

32. Chapter 16
Fig. 16.25

33. Chapter 16
Fig. 16.26 Effect of (l/d) ratio on average bearing pressure

34. Chapter 16
Fig. 16.27

35. Chapter 16
Fig. 16.28

36. Chapter 16

37. Chapter 16
Fig. 16.29 Bearing constructions

38. Chapter 16
Fig. 16.30 Circumferential oil groove bearing

39. Chapter 16
Fig. 16.31 Cylindrical oil groove bearing

40. Chapter 16
Fig. 16.32 Principle of oil ring bearing

41. Chapter 16
Fig. 16.33 Structure of Lubricating oils

42. Chapter 16
Fig. 16.34 Load Characteristics of Bearings (a) Hydrodynamic Bearing
(b) Hydrostatic Bearing (c) Rolling Contact Bearing

43. Chapter 16
Fig. 16.35

44. Chapter 16
Fig. 16.36

45. Chapter 16
Fig. 16.37 Spherical step bearing