Application of oil-free bearings in the lubrication of key industrial and mining equipment

    Due to the requirements of the production process, some key equipment of industrial and mining enterprises operate under extremely severe working conditions. Due to the heavy equipment and high ambient temperature, the dust is large or the air contains acidic corrosive gases such as CO and SO2, which brings many problems to the lubrication of the equipment. The friction and wear are serious. So far, most of the above-mentioned enterprises in China still use traditional oil. Grease lubrication, and in fact these industrial and mining conditions have exceeded the range of oil and grease lubrication, and it is prone to bite or seizure of bearings and other friction pairs, causing serious wear and damage of parts, which often leads to equipment outage. In order to produce continuous operation, in addition to the original design required to install multiple equipment wheel repair, a large number of maintenance personnel must be invested. Seriously limiting productivity, spare parts and energy consumption have become an important obstacle to the development of production. Automobile manufacturing, cement production, petrochemical and other enterprises have proposed the provision of special lubrication materials under complex working conditions. To this end, oil-free bearings solve the lubrication problem under special working conditions for enterprises, and bring obvious economic and social benefits.

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Bearing box installation and precautions

   Bearing housing installation:


1, standard type


Several methods of mounting the bearing housing with snap rings and retaining plates.


Mounting the bearing with the set screw will cause the bearing casing to deform and should be avoided as much as possible.


2, flange type


When installing a flange type linear bearing, the precision of the surface of the bearing housing must be accurate.


3, adjustable type (small opening type)


The bearing is perpendicular to the opening in the bearing housing to obtain a uniform preload in the circumferential direction.


4, large opening type


If used in conjunction with a suitable housing, large-open bearings can also be adjusted for clearance, even with light preload.


5, precautions during installation


When the linear bearing is installed in the bearing housing, auxiliary work should be used to avoid direct tapping of the end face or the sealing ring. The bearing should be evenly introduced, and the buffer plate should be used to load it with a gentle tap.


To thread the optical axis into the linear bearing, the shaft and the centerline of the bearing must be aligned. If the shaft is inserted obliquely, the balls may fall off or cause the cage to be deformed and damage the linear bearings.


The applied load should be evenly distributed over the entire bearing, especially when subjected to transient loads. Two or more bearings should be used. Linear bearings are not subject to rotating loads, which can cause accidents.

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