the anti-corrosion and heat lubrication methods of NTN wheel bearing
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Concentrated oil lubrication: the advantage is easy to seal, less wastage, less affected by temperature, load nature of the velocity changes in a larger range. The disadvantage is that the poor mobility of the internal friction coefficient, so the energy loss, when the long-term work in high temperature, loss of lubricating properties. In order to improve the nature of concentrated oil, tend to add 15% to 30% machine oil in the grease.
The high viscosity of the lubricant, the bearing capacity, bearing flow / J, and power consumption, so the bearing temperature rise. Temperatures are high, the lubricant viscosity decreases, and thus by increasing the viscosity of the lubricant ntn bearings to increase the carrying capacity will be limited.
Wheel bearings, the grease is critical. Deterioration of the grease, not only to achieve its proper role away will damage the bearing.
An oil flow observation
Take two measuring cups, one of Sheng to be checked lubricants, and other empty on the table will be filled with lubricating oil measuring cup held high to leave the desktop 30-40 cm and tilt, so that the lubricating oil to slowly flow to the empty cup observe the flow, the quality of a good lube oil flow should be slender, uniform, continuous, if there is oil flow unsteadiness, sometimes with large shed, said lubricating oil has gone.
2, hand twist method
Twist the lubricant between the thumb and index finger repeatedly grinding, better lubricants hand felt lubrication, less wear debris and friction-free, if they feel the sense of a larger friction of the sand and the like between the fingers, indicates that the lubricant within the impurities should be replaced with new lubricants.
3, the illumination method
On a clear day with a screwdriver lubricant pulled up a 45 degree angle with the horizontal plane. Control sunlight, observed droplets circumstances, in the light, can clearly see the lubricant wear debris for good, you can continue to use excessive debris, replace grease.
4, the oil droplets traces of France
Take a clean white filter paper, drip a few drops on filter paper, until the lubricant leakage, if the surface has a black powder, touch resistance astringent, then the lubricant inside the impurity has a lot of good oil powder, hand feels dry and smooth, and yellow traces.
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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Improper manner can also cause ntn bearings fever. Lubrication to reduce wear of moving parts to ensure the accuracy of press, reduce energy consumption. Lubrication points thin oil lubrication, the concentrated oil lubrication. Thin oil lubrication: the advantages of the internal friction coefficient is small, so to overcome the friction energy consumption, thin oil mobility, easy access to all lubrication points of friction surface, has a good cooling effect, and can adhere to the friction surface impurities and metal particles generated as a result of grinding away. The disadvantage is that the film can not afford the unit requires high pressure, sealed. High-speed presses generally use of the large flow of thin oil lubrication, can take the heat generated by the friction pair.Concentrated oil lubrication: the advantage is easy to seal, less wastage, less affected by temperature, load nature of the velocity changes in a larger range. The disadvantage is that the poor mobility of the internal friction coefficient, so the energy loss, when the long-term work in high temperature, loss of lubricating properties. In order to improve the nature of concentrated oil, tend to add 15% to 30% machine oil in the grease.
The high viscosity of the lubricant, the bearing capacity, bearing flow / J, and power consumption, so the bearing temperature rise. Temperatures are high, the lubricant viscosity decreases, and thus by increasing the viscosity of the lubricant ntn bearings to increase the carrying capacity will be limited.
Wheel bearings, the grease is critical. Deterioration of the grease, not only to achieve its proper role away will damage the bearing.
An oil flow observation
Take two measuring cups, one of Sheng to be checked lubricants, and other empty on the table will be filled with lubricating oil measuring cup held high to leave the desktop 30-40 cm and tilt, so that the lubricating oil to slowly flow to the empty cup observe the flow, the quality of a good lube oil flow should be slender, uniform, continuous, if there is oil flow unsteadiness, sometimes with large shed, said lubricating oil has gone.
2, hand twist method
Twist the lubricant between the thumb and index finger repeatedly grinding, better lubricants hand felt lubrication, less wear debris and friction-free, if they feel the sense of a larger friction of the sand and the like between the fingers, indicates that the lubricant within the impurities should be replaced with new lubricants.
3, the illumination method
On a clear day with a screwdriver lubricant pulled up a 45 degree angle with the horizontal plane. Control sunlight, observed droplets circumstances, in the light, can clearly see the lubricant wear debris for good, you can continue to use excessive debris, replace grease.
4, the oil droplets traces of France
Take a clean white filter paper, drip a few drops on filter paper, until the lubricant leakage, if the surface has a black powder, touch resistance astringent, then the lubricant inside the impurity has a lot of good oil powder, hand feels dry and smooth, and yellow traces.
