TAILIEUCHUNG - Văn bản hướng dẫn thiết kế máy P26

Sliding Contact Bearings 1. Introduction. 2. Classification of Bearings. 3. Types of Sliding Contact Bearings. 4. Hydrodynamic Lubricated Bearings. 5. Assumptions in Hydrodynamic Lubricated Bearings. 6. Important Factors for the Formation of Thick Oil Film. 7. Wedge Film Journal Bearings. 8. Squeeze Film Journal Bearings. 9. Properties of Sliding Contact Bearing Materials. 10. Materials used for Sliding Contact Bearings. 11. Lubricants. 12. Properties of Lubricants. 13. Terms used in Hydrodynamic Journal Bearings. 14. Bearing Characteristic Number and Bearing Modulus for Journal Bearings. 15. Coefficient of Friction. 16. Critical Pressure. 17. Sommerfeld Number. 18. Heat Generated . 19. Design Procedure. 20. Solid. | CONTENTS C H A P T E R 26 Sliding Contact Bearings 1. Introduction. 2. Classification of Bearings. 3. Types of Sliding Contact Bearings. 4. Hydrodynamic Lubricated Bearings. 5. Assumptions in Hydrodynamic Lubricated Bearings. 6. Important Factors for the Formation of Thick Oil Film. 7. Wedge Film Journal Bearings. 8. Squeeze Film Journal Bearings. 9. Properties of Sliding Contact Bearing Materials. 10. Materials used for Sliding Contact Bearings. 11. Lubricants. 12. Properties of Lubricants. 13. Terms used in Hydrodynamic Journal Bearings. 14. Bearing Characteristic Number and Bearing Modulus for Journal Bearings. 15. Coefficient of Friction. 16. Critical Pressure. 17. Sommerfeld Number 18. Heat Generated. 19. Design Procedure. 20. Solid Journal Bearing. 21. Bushed Bearing. 22. Split Bearing or Plummer Block. 23. Design of Bearing Caps and Bolts. 24. Oil Grooves. 25. Thrust Bearings 26. Foot-step or Pivot Bearings. 27. Collar Bearings. Introduction A bearing is a machine element which support another moving machine element known as journal . It permits a relative motion between the contact surfaces of the members while carrying the load. A little consideration will show that due to the relative motion between the contact surfaces a certain amount of power is wasted in overcoming frictional resistance and if the rubbing surfaces are in direct contact there will be rapid wear. In order to reduce frictional resistance and wear and in some cases to carry away the heat generated a layer of fluid known as lubricant may be provided. The lubricant used to separate the journal and bearing is usually a mineral oil refined from petroleum but vegetable oils silicon oils greases etc. may be used. Classification of Bearings Though the bearings may be classified in many ways yet the following are important from the subject point of view 962 CONTENTS Sliding Contact Bearings 963 Roller Bearing 1. Depending upon the direction of load to be supported. The bearings under .

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