- Deep groove ball bearings
- Cylindrical roller bearings
- Aligning ball bearings
- Stainless steel bearings
- LNSERTED bearings
- Ball introduced
- Plain Bearings
- Needle Roller Bearings
- Angular contact ball bearings
- Thrust Roller Bearings
- Spherical roller bearings
- Thrust Ball Bearings
- Rolling mill bearings
- Tapered Roller Bearings
- Plastic bearings
- Linear motion bearings
| The main fault with hydro bearing and handling | |||
| 点击数：4042 日期：2014/4/4 | |||
| FAG Bearings cause a sharp rise in temperature . If I do not take timely measures , which could make oil film between the shaft and bearing damage in a short time by a local or dry friction. Bearing the appearance of the alloy can be melted , or unit bearings overheating due to FA G maintenance and emergency shutdown . But they can not prevent . From the above block diagram shows the bearing clearance zone difference FA G bearing overheated expansion , but the general rules are FA G bearing defects caused by the development of the top and shrubs or burnout FA G between the bearing shaft . Mechanical and electrical units imbalance is mainly due to an imbalance . Increase between Bush and clothes , cell pile , electrical imbalance. Will all lead to increased support for vibration . And the elimination of time . In addition, therefore . Once the unit has a clear column vibration . Should be checked in time due to vibration. Regularly check and adjust the bearing clearance. According to the factory regulations on guide bearing 0.20-0.25mm gap wall hydro unilateral group ( difference of course, according to the manufacturer's requirements, the upper and lower guide bearing and guide bearing is changing realities are different According to the drawings provided by the manufacturer . Periodic inspection adjustable cone. Air conditioning between the former Soviet Union such as Krasnoyarsk hydropower , tidal range if there . Every two years on average each machine ; and Voight kensik hydropower hydropower and woerrisikelien former Soviet Union , in the account . Each of hydropower in China do not have . 3 years , every two years and once a year . Specific time interval bearing clearance adjustment . Than the speed and stability of plant operation , according to the increase of power generating units depends on the actual bearing clearance . The quality of the work states, one important component of the local FA G is a hydro bearing group . Will directly affect the stability of the unit, and reliable operation . This place , hydro group . Guide sleeve bearing such a high accident rate than the thrust bearing FA G. Yet . Small power plants, because of manufacturing , installation and operation of the management unit , guiding FA G bearings , FA G bearing rose too high road is not stable , FA G bearing oil Burnt problem. The main reason is the failure analysis . Bureau of instability tile or tile in the following areas . Common causes FA G bearing too high . Bearing Enterprise Block Diagram increased between 2-31FA gap G between the bearing shaft and bearing strength of the shaft and bearing journey. As can be seen from the figure, a larger one . Turbomachinery imbalance or electrical imbalance is one reason why the clothes . Unbalanced due to mechanical or electrical machines . Alternating force on the guide bearing role in increasing ( alternating force three rate rate or multiples thereof ) The results of these ingredients squeeze pits or cracks appear , the results of cross- bearing guide for FA G inotropic support department . The support plate bolt head or squeezing . These components will go on temporary damage . Destruction of components, through to European expansion between the shaft and bearing , at the same time . When the FA G pits or cracks in the support element bearings. Due to the static magnetic field of asymmetric magnetic pull asymmetric field ) impact , and may make FA G bearing load bearing parts. The clearance between the shaft and the bearing . Expansion , in addition . The result will increase the generator shaft swing , increasing operations increased rapidly alternating force . Alternating force . And supporting elements more damage occurs . |
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