In the process of using SKF imported bearings; grease is very important. If so; the use of decayed grease; not only does not achieve the desired effect; but also will damage SKF imported bearings. The following analysis to check the commonly used grease Some ways.
1.Oil flow survey method
Take two measuring cups; one between them holds the lubricant to be viewed; the other is left empty on the table; lift the measuring cup filled with lubricant 30-40 cm away from the table and skew; let the lubricant gradually flow into the empty cup Observe its activity status; the flow of good quality lubricating oil should be slender, uniform and continuous; if the oil flow appears to be fast and slow; sometimes there are large pieces of the flow; it means that the lubricating oil has been transformed.
2.Hand twist method
Twist the lubricating oil between the thumb and index finger and repeat grinding; the better lubricating hand feels lubricity, less abrasive debris, and no conflict; if you feel a large sense of conflict such as sand between the fingers; indicate the lubricating oil There are many internal impurities; it can't be used again; new lubricant should be replaced.
On a sunny day; use a screwdriver to lift the lubricating oil; at a 45-degree angle to the horizontal. Control the sunlight; investigate the oil droplets; under the light; it can be clearly seen that there is no wear debris in the lubricating oil is outstanding; sustainable effect ; If there is too much debris; the lubricant should be replaced.
4.Oil drop trace method
Take a clean white filter paper; drip a few drops of oil on the filter paper; after the lubricant oil leaks; if there is black powder on the surface; there is a sense of astringency when touched by hand; it shows that there are many impurities in the lubricant; good lubricant No powder; dry and lubricating by hand; and yellow marks.
At the same time, Eric Bearing Limited summarized some storage methods of SKF bearings
1.The storage location must be protected from moisture, as the bearings will rust once exposed to moisture.
2.The SKF carton package should be placed on a certain specification shelf, which is conducive to finding goods and rectifying inventory
3.When handling large bearings, try to use tools and forklifts to handle the goods gently.
4.Try not to suppress some plastic packaged goods. Because after all it is plastic
5.Do not mix the various models because the grease in the bearings of different models is different
6.Regular maintenance, such as frequently wiping some anti-rust oil
7.Cover the outer packaging of the bearing as much as possible with a cloth to prevent the bearing from entering the dust
8.Some precision spindle bearings must be handled lightly
9.Follow the instructions during maintenance
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Types of anti-friction SKF bearings and their lubrication function
Anti-friction SKF bearings are divided into two main types. They are ball SKF bearings and roller SKF bearings. At the same time, we also need to know that due to the different uses of manufacturers and SKF bearings, many different types have evolved based on these basic structures and evolutions.
Lubrication function, anti-friction lubricant has the following main functions
1.Lubricate the sliding contacts between the retaining ring and the other parts of the SKF bearing.
2.Lubricate any contacts between the seat ring and the rolling parts that are not really rolling.
3.Lubricate the sliding contact between the roller and the middle of the roller-type SKF bearing.
4.Lubricate all real rolling contacts in SKF bearings.
The secondary functions are:
5.Protect highly delicate surfaces from corrosion.
6.Assist the sealing cover against foreign substances. Grease has this function.
7.Provide a means of heat conduction (cold).