Judge edabearing operating rules and fault analysis
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Continue to run into the use of late, the rolling bearing vibration and noise began to increase, and sometimes appear abnormal sound, but the change of vibration increases more slowly, at this time, bearing kurtosis value suddenly reaches a certain value. We think, the rolling bearing which shows the initial fault.
At this time, requires close monitoring of the rolling bearing, pay close attention to the change. Since then, bearing kurtosis value began to decline rapidly, and close to the normal value, while the vibration and noise significantly increased, the increase amplitude begins to accelerate, when vibration more than vibration standards (such as ISO2372), the bearing kurtosis value began to increase quickly, when both exceeding standard of vibration, and kurtosis value more than the normal value (available kurtosis relative standard), we believe that the bearing has entered late failure, the need for timely maintenance equipment, replacement of rolling bearing.
Rolling bearing fault feature to show advanced severe fault (usually Edabearing damage such as axle, burn, sand frame spallation, raceway, beads to wear) most of the time not more than one week, equipment capacity is more big, the faster the speed, the shorter the time interval between. Therefore, in the actual fault diagnosis of rolling bearing fault feature of late, once found, should be decisive judgment bearing fault, arrange the repair as soon as possible.
If there is obviously the rotation is not flexible, indicates that the axial size is too large, the tolerance to cut.
If the bearing onto the shaft by hand after turning has obvious "rustle" sense, the tolerances of the shaft may be too large or the roundness of the shaft is not good. So in the control shaft and bearings must also control the roundness. Assembly, bearing 2 Assembly, bearing 2
Because the Edabearings are precision products, such as improper assembly is easy to bearing raceway damage, cause damage to the bearing.
Bearing assembly shall have the special mould, can not be beat, after pressing shaft when only small force, force pressure when only circle circle. The assembly by pneumatic or hydraulic press, in the upper and lower touch to outside in the horizontal state, if tilt will cause the bearing channel due to the stress damage, and the bearing guide ring. The assembly by pneumatic or hydraulic press, in the upper and lower touch to outside in the horizontal state, if tilt will cause the bearing channel due to the stress damage, and the bearing guide ring.
3, to prevent the assembly of foreign body
Bearing easily mounted to the rotor dynamic balance when the dynamic balance of iron filings into bearing interior, so it is best to install bearing dynamic balancing. Some manufacturers in order to convenient assembly, the assembly of some oil or grease lubrication effect in the bearing chamber painted, but the operation is often difficult to control, if the oil or grease in the bearing chamber accumulates more, in the bearing rotates easily along the shaft into the bearing internal. Bearing is not the best oil or grease, such as non coated not to control may not be in the bearing chamber of accumulation.
4, paint, rust prevention
Paint rust is characterized by multiple sealed type motor, the motor voice in the assembly is very good, but in some time within the warehouse, the electrical noise change greatly, remove bearing with serious rust. Many manufacturers are considered to be before the problem of the bearing, motor factory is now aware of the main insulation paint problem, the problem is mainly because the acidic material insulating paint volatile out of the formation of corrosive substances under certain temperature, humidity, the bearing groove corrosion induced Edadamage of bearing. The problem can only be good choice of insulating varnish, and after drying ventilation for a period of time after the assembly.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Edabearings exhibit a strong regularity in the course of its use, and the repeatability is very good. High quality bearing (rolling bearing) used in the beginning, vibration and noise are relatively small, but some scattered spectrum, amplitude is small, may be due to some defects in the manufacturing process, such as surface burrs caused by.Continue to run into the use of late, the rolling bearing vibration and noise began to increase, and sometimes appear abnormal sound, but the change of vibration increases more slowly, at this time, bearing kurtosis value suddenly reaches a certain value. We think, the rolling bearing which shows the initial fault.
At this time, requires close monitoring of the rolling bearing, pay close attention to the change. Since then, bearing kurtosis value began to decline rapidly, and close to the normal value, while the vibration and noise significantly increased, the increase amplitude begins to accelerate, when vibration more than vibration standards (such as ISO2372), the bearing kurtosis value began to increase quickly, when both exceeding standard of vibration, and kurtosis value more than the normal value (available kurtosis relative standard), we believe that the bearing has entered late failure, the need for timely maintenance equipment, replacement of rolling bearing.
Rolling bearing fault feature to show advanced severe fault (usually Edabearing damage such as axle, burn, sand frame spallation, raceway, beads to wear) most of the time not more than one week, equipment capacity is more big, the faster the speed, the shorter the time interval between. Therefore, in the actual fault diagnosis of rolling bearing fault feature of late, once found, should be decisive judgment bearing fault, arrange the repair as soon as possible.
If there is obviously the rotation is not flexible, indicates that the axial size is too large, the tolerance to cut.
If the bearing onto the shaft by hand after turning has obvious "rustle" sense, the tolerances of the shaft may be too large or the roundness of the shaft is not good. So in the control shaft and bearings must also control the roundness. Assembly, bearing 2 Assembly, bearing 2
Because the Edabearings are precision products, such as improper assembly is easy to bearing raceway damage, cause damage to the bearing.
Bearing assembly shall have the special mould, can not be beat, after pressing shaft when only small force, force pressure when only circle circle. The assembly by pneumatic or hydraulic press, in the upper and lower touch to outside in the horizontal state, if tilt will cause the bearing channel due to the stress damage, and the bearing guide ring. The assembly by pneumatic or hydraulic press, in the upper and lower touch to outside in the horizontal state, if tilt will cause the bearing channel due to the stress damage, and the bearing guide ring.
3, to prevent the assembly of foreign body
Bearing easily mounted to the rotor dynamic balance when the dynamic balance of iron filings into bearing interior, so it is best to install bearing dynamic balancing. Some manufacturers in order to convenient assembly, the assembly of some oil or grease lubrication effect in the bearing chamber painted, but the operation is often difficult to control, if the oil or grease in the bearing chamber accumulates more, in the bearing rotates easily along the shaft into the bearing internal. Bearing is not the best oil or grease, such as non coated not to control may not be in the bearing chamber of accumulation.
4, paint, rust prevention
Paint rust is characterized by multiple sealed type motor, the motor voice in the assembly is very good, but in some time within the warehouse, the electrical noise change greatly, remove bearing with serious rust. Many manufacturers are considered to be before the problem of the bearing, motor factory is now aware of the main insulation paint problem, the problem is mainly because the acidic material insulating paint volatile out of the formation of corrosive substances under certain temperature, humidity, the bearing groove corrosion induced Edadamage of bearing. The problem can only be good choice of insulating varnish, and after drying ventilation for a period of time after the assembly.
