Correctly grasp the bearing in the use of mechanical devices and the conditions of use and environmental conditions is a prerequisite to select suitable bearing. Requires access to data and information on the following aspects: function and structure of mechanical devices, using part of the SKF bearings, the bearing load (size, orientation), rotation speed, vibration, shock, temperature (ambient temperature, temperature), the surrounding atmosphere (corrosive, clean, lubricate). Following on from six areas we describe in detail:
The first step: Water Walk
FAG bearings as the most advanced in the world, its own refining bearing steel, hardness and precision guarantee on the quality of the product.
Second step: package design
NSK bearings normally authentic products packaging design and color are very clear, seal is, people often say that the prefix is very bumpy and clarity.
Step three: manually rotate
If there is a pulley, you can manually turn the Timken bearings, should be very smooth without abnormal noise, there should be no impurities. Running allowed light in a bearing noise, if the sound is too loud or unusual noise or impact sound, it indicates that the bearing is faulty. Bearing rust antirust oil with little flavor, but is unlikely, turning the whole bearing clean fragrance.
The fourth step: cross vertical surfaces
Bearing junction of cross and vertical surfaces with a fine point, and has a black border.
Fifth step: Shell moderate
INA bearings in the course of normal use, bearing installation of parts allows a certain degree of temperature when touching body shell by hand, should not feel hot as normal. If the bearing temperature is too high, you may want to consider whether the lubricant quality to meet the requirements, or degenerate, factors such as the viscosity of lubricant is too high; or install body Assembly is too tight, too tight bearing Assembly; or rolling bearing cage fragmentation.
The sixth step: bearing noise
Bearing noise is heard for many reasons, one is the inner and outer rings of bearing surface wear. Again, insufficient bearing lubrication, formation of dry friction and bearing broken produces abnormal noises.

 


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