The use of various mechanical devices, apparatus, etc. Rolling increasingly stringent market requirements for performance, the conditions required by the bearing performance is becoming increasingly diverse. In order from a large number of structure, size, and select the most suitable bearing, you need to study from various angles. In the choice of bearings generally consider as the shaft bearing arrangement, installation, ease of disassembly of the space allowed by the bearing size and bearing market, etc., generally determine the bearing structure. Second, while Comparative Study of the various mechanical design life and bearing using the bearing a variety of durable limits, while the bearing size. Often biased in the choice of bearing only to consider the bearing fatigue life, grease life of aging by the grease, abrasion, noise need to fully research. Furthermore, according to different purposes, it is necessary accuracy, clearance, and maintain the requirements of the aircraft structure, grease, etc., for a specially designed bearing. Select bearings, however, there is no certain order, rule, priority consideration should be given the required conditions on bearing performance, the most related matters, particularly practical.
◆ bearing the required conditions, performance
◆ conditions of use, environmental conditions
◆ bearing, install the part size
◆ the space allowed by the bearing
◆ the size of the load direction
◆ vibration, shock
◆ the speed of rotation, the limiting speed of bearings
◆ inner ring, outer ring tilt
◆ the axial direction of the fixed bearing with columns
◆ ease of finding loading and unloading
◆ noise, torque
◆ Rigid
◆ market, economy
The bearing structure, arrangement
◆ the use of mechanical and design life
◆ equivalent dynamic load, or the equivalent static load
◆ rotation speed
◆ allow static load factor
◆ allow axial load (in the case of cylindrical roller bearings)
Determine the bearing size
◆ Rotary runout accuracy
◆ High-speed rotation
◆ torque changes
Note: on the use of rolling bearings are precision components, and its use shall carefully carried out. No matter how high-performance bearings, if used improperly, you will not get the expected performance. Note the following about the use of bearings.
(1) to maintain the bearing and the surrounding clean.
Even the eyes can not see dust, also bearing a bad influence. Therefore, to keep the surroundings clean so that dust will not invade the bearing.
(2) use caution.
To give the bearing a strong impact in use, will have a scar and indentation as the cause of the accident. Severe cases, it will crack, fracture, it is necessary to pay attention.
(3) using the appropriate operating tool.
Avoid to replace existing tools, you must use the right tools.
(4) attention to the corrosion of the bearing.
Operation bearing the sweat of the hands become rusty. Pay attention to clean hands operation, it is best to try to wear gloves.
In order to maintain the bearings have been the performance in good condition as long as possible, to be the maintenance, overhaul, in order to accident prevention in the first place, to ensure the reliability of operation, improve productivity and economy.
Maintenance best corresponding mechanical operating conditions, operating standards, on a regular basis. Content to monitor the operation status, to supplement or replace the lubricant will be
Of demolished check.
As maintenance issues in the operation, the bearing of the rotating sound, vibration, temperature, lubricant status and so on.



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