In order to maintain the original performance of the bearing for a long time, it is necessary to carry out maintenance and overhaul to ensure the reliability of the operation and improve the productivity and economy. Maintenance is best in accordance with the corresponding mechanical operating conditions of the standard. This includes monitoring the operation status, supplying or replacing lubricants, and periodic disassembly checks. As a running maintenance matter, there are bearing rotation sound, vibration, temperature, lubricant status, and so on.
·SKF bearing cleaning
When the bearing is disassembled for maintenance, first record the appearance of the bearing, confirm the remaining stock of lubricant, and wash the bearing after sampling and checking the oil used. As a cleaning agent, frequent use of gasoline, kerosene.
Remove the bearing for cleaning, rough cleaning, and optimal cleaning. Then respectively put in the container. Put into the metal net bottom, so that the bearing does not directly contact the container dirt. During rough cleaning, if the bearing with dirty rotating will damage the rolling surface of the bearing, it should be paid attention. In the raw cleaning oil, use the brush to remove grease, adhesive, roughly clean, into the excellent washing. Delicate washing, is the bearings in the cleaning oil while rotating, while carefully cleaning. Besides, cleaning oil should also be kept clean.
·Maintenance and judgment of SKF bearing
To determine whether the disassembled bearing is serviceable, check the bearing after it has been cleaned. Check the state of raceway surface, rolling surface and mating surface, the wear condition of the retainer, the increase of bearing clearance, and the related damage and abnormality of dimensional accuracy decline. For non-detachable small ball bearings, hold the inner ring level with one hand and rotate the outer ring to make sure it is smooth.
The raceway surface of the roller body and the outer ring can be inspected separately.
Because large bearings cannot be rotated by hand, pay attention to check the appearance of a rolling body, raceway surface, cage, shield surface, etc.
·The purpose of SKF
Bearing lubrication purposes of the rolling bearing lubrication is to reduce the internal friction and wear of the bearing to prevent burning and sticking.
1.Reduce friction and wear
In the contact segment of the bearing ring, roller and retainer, avoid metal contact and reduce friction and wear.
2.Extend fatigue life
The rolling fatigue life of the bearing is prolonged if the rolling contact surface is lubricated well during rotation. On the contrary, low oil viscosity, the lubricating oil film thickness is not suitable, then shorten.
3.Discharge friction heat, cooling
The circulation of the oil method can be oil produced by friction heat, or from the external temperature, refrigeration. Prevent the bearing from overheating, prevent the lubricating oil itself from aging.
Lubrication method: the lubrication method of bearing is divided into fat lubrication and oil lubrication.In order to make the excellent bearing performance, first of all, to choose suitable use conditions, purposes of the lubrication method. If only lube is considered, the lubricity of oil lubrication is dominant. However, heavy lubricating oil can simplify the structure around the bearing, the advantages and disadvantages of fat lubrication, and oil lubrication will be compared.