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Bearing Presentation for beginnersvv.ppt
The document provides an overview of bearing classification, including various types such as deep groove ball bearings and cylindrical roller bearings, along with standard components and methods for mounting and dismounting. It also addresses failure analysis and countermeasures for issues like flaking, scoring, and corrosion, emphasizing the importance of proper lubrication and handling methods. Additionally, it discusses assembly techniques and tools used for both cold and hot mounting of bearings.
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Bearing Presentation for beginnersvv.ppt
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- 2. Classification of Bearings Rolling Bearings Deepgroove ball bearing Deep groove ball bearing Self Aligning ball bearing Self Aligning ball bearing Angular contact ball bearing Angular contact ball bearing Track runner bearing Track runner bearing Cylindrical roller bearing Cylindrical roller bearing Needle roller bearing Needle roller bearing Spherical roller bearing Spherical roller bearing Taper roller bearing Taper roller bearing Radial Thrust Thrust ball bearing Thrust ball bearing Cylindrical roller thrust bearing Cylindrical roller thrust bearing Needle roller thrust bearing Needle roller thrust bearing Spherical roller thrust bearing Spherical roller thrust bearing
- 3. Spherical Plain Bearing Radial Bearing RadialBearing Thrust Bearing Thrust Bearing Rod Ends Rod Ends Classification of Bearings
- 4. Bearing Standard Components 1-The Inner Ring 2- The Outer Ring 3- The Rolling Element 4- The Cage “Retainer”
- 5. Mounting and DismountingOf Bearings
- 6. Bearing Cold Mounting Hammer Long Tubewith flat ends Used for Small and medium size bearings. cause forces to be transmitted through the rolling elements. Forces must be distributed on the outer and inner rings.
- 7. Bearing Hot Mounting Bearing Induction Heating Unit Heatmounting Methods Oil baths Induction heating. a) Treating one part. b) Cooling one part. c) Simultaneously heating one part and cooling the other part.
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- 9. Mounting and DismountingOf Bearings
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- 14. Running Traces AndApplied Load Typical running traces of deep groove ball bearing
- 15. Running Traces AndApplied Load Typical running traces on roller bearing
- 16. Failure Analysis Flaking Occurs when smallpieces of bearing material are split off from the smooth surface of the raceway or rolling elements due to rolling fatigue.
- 17. Failure Analysis Flaking Occurs when smallpieces of bearing material are split off from the smooth surface of the raceway or rolling elements due to rolling fatigue.
- 18. Failure Analysis Countermeasure •Reconfirm bearing applicationand load conditions. •Improve mounting method. •Improve sealing mechanism. •Use lubrication with proper viscosity. •Check bearing internal clearance.
- 19. Failure Analysis Peeling Dull orcloudy spots appear on surface along with light wear, small particles fall off and minor flaking occurs widely.
- 20. Failure Analysis Countermeasure •Select proper lubrication. •Improvesealing mechanism. •Improve surface finish of rolling mating parts.
- 21. Failure Analysis Scoring Surface damage dueto accumulated small seizures caused by sliding under improper lubrication or under sever operating condition.
- 22. Failure Analysis Scoring Surface damage dueto accumulated small seizures caused by sliding under improper lubrication or under sever operating condition.
- 23. Failure Analysis Countermeasure •Check sizeof the load. •Adjust the preload. •Improve lubrication.
- 24. Failure Analysis Smearing Surface damage whichoccurs from a collection of small seizers between bearing components caused by oil film rupture and/or sliding.
- 25. Failure Analysis Smearing Surface damage whichoccurs from a collection of small seizers between bearing components caused by oil film rupture and/or sliding.
- 26. Failure Analysis Countermeasure •Improve bearing clearance. •Improvelubrication method. •Improve sealing mechanism.
- 27. Failure Analysis Fracture Refers tosmall pieces which were broken off due to excessive load or shock load acting locally on a part of the roller corner or rib of a raceway ring.
- 28. Failure Analysis Countermeasure •Improve mounting method. •Improvehandling methods.
- 29. Failure Analysis Cracks Cracks inthe raceway ring and rolling elements. Continued use under this condition leads to larger cracks or fracture.
- 30. Failure Analysis Cracks Cracks inthe raceway ring and rolling elements. Continued use under this condition leads to larger cracks or fracture.
- 31. Failure Analysis Countermeasure •Correct the interference. •Checkthe load conditions. •Improve mounting method. •Use appropriate shaft shape.
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- 34. Failure Analysis Countermeasure •Check mounting method. •Check temperature,rotation ,a nd load conditions. •Reduce vibration. •Select lubrication method and lubricate.
- 35. Failure Analysis Pitting The pitting surfacehas a dull luster which appears on the rolling element surface or raceway surface.
- 36. Failure Analysis Countermeasure •Improve thesealing mechanism. •Filter the lubrication oil. •Use a proper lubricant.
- 37. Failure Analysis Wear Surface deterioration due tosliding friction at the surface of the raceway, rolling elements, roller end faces, rib face, cage pockets.
- 38. Failure Analysis Wear Surface deterioration due tosliding friction at the surface of the raceway, rolling elements, roller end faces, rib face, cage pockets.
- 39. Failure Analysis Countermeasure •Improve sealing mechanism. •Cleanthe housing. •Filter lubrication oil. •Prevent misalignment.
- 40. Failure Analysis Fretting Wear occursdue to repeated sliding between the two surfaces.
- 41. Failure Analysis Fretting Wear occursdue to repeated sliding between the two surfaces.
- 42. Failure Analysis Countermeasure •Use properlubricant. •Check the interface fit. •Apply a film of lubricant to the fitting surface.
- 43. Failure Analysis Creep Relative slipping occursat the fitting surfaces and thereby creates a clearance at the fitting surface.
- 44. Failure Analysis Countermeasure •Check theinterference and prevent rotation. •Correct sleeve tightening. •Apply a film of lubricant to the fitting surface.
- 45. Failure Analysis Seizure When sudden overheating occursduring rotation, the bearing becomes discolored.
- 46. Failure Analysis Seizure When sudden overheating occursduring rotation, the bearing becomes discolored.
- 47. Failure Analysis Countermeasure •Study thelubricant and lubricant method. •Improve the sealing mechanism. •Improve the mounting method.
- 48. Failure Analysis Electrical corrosion When electric currentpasses through a bearing, arcing and burning occur through the thin oil film at points of contact between the race and rolling elements.
- 49. Failure Analysis Countermeasure •Insulation ofthe bearing. •Design electric circuits which prevent current flow through the bearing.
- 50. Failure Analysis Rust and Corrosion Pitson the surface of rings and rolling elements and may occur at the rolling element pitch on the rings or over the entire bearing surfaces.
- 51. Failure Analysis Countermeasure •Improve sealing mechanism. •Studythe lubrication method. •Improve storage methods. •Improve handling method.
- 52. Failure Analysis Mounting Flaws Straight line scratcheson surface of raceways or rolling elements caused during mounting or dismounting of bearing.
- 53. Failure Analysis Countermeasure •Use appropriatetool for mounting. •Avoid a shock load by use of a press machine. •Center the relative mating parts during mounting.
- 54. Failure Analysis Discoloratio n Discoloration of cage,rolling elements, and raceway ring occurs due to a reaction with lubrication and high temperature.
- 55. Failure Analysis Countermeasure •Improve thelubrication method.
- 56. Failure Analysis Flaking Flaking inswash plate pump bearings and shaft due to excessive load and low lubrication causes the bearing to collapse and flaking the shaft.
- 57. Failure Analysis Flaking Flaking inswash plate pump bearings and shaft due to excessive load and low lubrication causes the bearing to collapse and flaking the shaft.
- 58. Failure Analysis Flaking Flaking inswash plate pump bearings and shaft due to excessive load and low lubrication causes the bearing to collapse and flaking the shaft.
- 59. Failure Analysis Flaking Flaking inswash plate pump bearings and shaft due to excessive load and low lubrication causes the bearing to collapse and flaking the shaft.
- 60. Failure Analysis Peeling Small flakingin closure valve Bearing in Lime Plant due to misalignment and insufficient Fit or bad mounting.
- 61. Failure Analysis Peeling Small flakingin closure valve Bearing in Lime Plant due to misalignment and insufficient Fit or bad mounting.
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