First, what about the installation surface and installation site? Yes. If
there are foreign materials such as iron filings, burrs, and dust in
the bearing, the bearing will produce noise and vibration from the
lubricating steel sleeve during operation, and it will even damage the
raceways and rolling elements. Therefore, before installing the bearings, you must ensure that
the installation surface and the installation environment are clean.
Second,
the bearing must be cleaned before installation? The bearing surface is
coated with anti-rust oil, you must use copper-based solid inlaid
lubrication bearing clean gasoline or kerosene carefully cleaned, and
then coated with clean and high-quality or high-speed high-temperature
grease can be installed . The impact of cleanliness on bearing life and vibration noise is very large. However, we must remind you that the sealed bearings do not need to be cleaned and refueled.
Third,
how to choose the grease? Lubricating the operation and life of the
bearing has extremely important influence, here briefs the general
principle that chooses the grease to you. Grease
is made of base oil, thickener and additives. The performance of
greases of different types and the same type of different brands is
quite different. The allowable rotary oil-free bearing bushings are
different. Please pay attention when selecting. The
performance of grease is mainly determined by the base oil. Generally
low viscosity base oil is suitable for low temperature, high speed, and
high viscosity for high temperature and high load. Thickeners
are also responsible for the lubricating properties, and the water
resistance of the thickeners determines the water resistance of the
grease. In principle, brands of different greases cannot be mixed, and
even greases of the same thickener will have bad effects on each other
due to different additives.
Fourth,
in the lubrication of bearings, the more grease coated the better?
Lubricated bearings, the more the better the grease coating, which is a
common misconception. Excessive
grease in the bearing and bearing chambers will cause excessive
agitation of the grease, resulting in extremely high temperatures. The number of bearings filled with lubricant should be 1/2 to 1/3
full of the internal space of the bearing, and should be reduced to 1/3
at high speed.
5.
How to install and disassemble? Do not directly hammer the bearing end
surface and non-force bearing surface during installation. Use a
pressure block, sleeve or other installation tool (tooling) to make the
bearing evenly stressed. Do not install it through the rolling element
transmission force. If the mounting surface is lubricated, the installation will be smoother. If
the interference is large, the bearings should be installed in mineral
oil and heated to 80~90°C as soon as possible. Strictly control the oil
temperature to no more than 100°C to prevent the hardness of the
tempering effect from decreasing and affecting the dimensional recovery. When
it is difficult to disassemble, it is recommended that you use the
disassembly tool to pull out the inner ring while carefully pouring hot
oil, and the heat will make the inner ring of the bearing expand, which
makes it easier to fall off.
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- TEL: 86-731-84770165
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