How to increase bearing source: could the bearing | last updated: - 2020
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And how to increase the service life of bearing life of bearing is related to manufacturing, installation and application are inseparable, make sure do a good job in every stage, can make the bearing in the best operating condition, thus increase the bearing life.
1.
The choice of shaft and bearing chamber size tolerance and operation: after the bearing pressure into the bearing, should be able to turn easily, without conduction block.
If there is a obvious rotation is not convenient, the specifications of the shaft is too big, should reduce size tolerance.
Such as bearing pressure into the shaft after his rotation has significant 'hissing' feeling, may be shaft dimension tolerance is large or shaft concentricity is not very good.
As a result, the bearing and bearing housing size tolerance control, must have good concentricity, many Chinese manufacturers only at this stage of dimensional tolerance, not concentricity to operate.
2.
Bearing installation method: because the bearing is high precision products, such as installing a bad easily damaged bearing section, damages to the bearings, the bearing damage.
Bearing installed at special shells, not casually tapping.
According to the last only circle stress, press circle only big circle stress.
When installing a standard pneumatic or hydraulic press, when riveting around extroversion, if deflection can lead to bearing cross-section bearing damage, and bearing pad.
3.
Prevent dirt installation: when the bearing is placed in the motor rotor on the rotor dynamic balance, it is easy to rotor dynamic balance caused by iron pin into the bearings, so it's best to ready before installation of bearing rotor dynamic balance.
Some manufacturers in order to convenient installation, install or vegetable oils in bearing interior to wetting effect, but the actual operation personnel is difficult to control the number of bearing indoor or vegetable oils, if you have any more or vegetable oils, bearing the indoor bearing rotation is easy to follow the shaft into the bearing.
The bearing chamber had better not oil or vegetable oil.
If necessary, should operate, not accumulated in bearing chamber.
4, paint, rust preventing: rust paint is characterized by multiple in sealing type motor, motor noise when installation is very good, but put some time in the warehouse, motor noise is very big, tear open come down to the bearing has a serious corrosion condition.
Many manufacturers think before is the bearing problem.
After constant propaganda and planning, motor factory has realized mainly is a question of anti-corrosion paint.
The key question is the acid in three anticorrosive coatings under certain temperature and humidity will produce corrosive chemicals.
This problem at this stage only with good anti-corrosion coating, and install natural ventilation after a certain period of time after airing.
Who read this article also browse: what key elements of electrochemical corrosion caused by bearing bearing metal corrosion is made up of all sorts of nature and caused by the external factors, in particular the key are: (1) metal composite material composition and structure itself;
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2)
The smoothness of the metal surface (
Etching with oxygen concentration difference charge batteries)
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Contact with the surface of the metal composition and ph value of aqueous solution;
(4) working temperature and environmental humidity;
5. Various natural environment material in contact with the metal surface.
Why hand sweat will cause rust metal materials?
Sweat is a kind of color not completely transparent or light yellow liquid, salty flavour acid, its ph value of 5 -
6.
In addition to the sodium, potassium, calcium, magnesium salt, also with a small amount of urea solution, sodium, citric acid, lactic acid bacteria and other organisms.
Sweat contact metal materials, can produce sweat film on metal surface produces photoelectric catalysis to metal materials, corrosion of metal materials.
People sweat is difficult to avoid, to avoid rust hand sweat to manufacturing workers should carry glue glove, refers to, or use the common tools take put parts, need not specialty touch goods at random.
