The influence of the quality of the bearing configuration for operation

Usually, the shaft is two bearings in the radial and axial support, called bearing on one side of the fixed end bearing, it bear radial and axial load, the fixed axis and the relative axial displacement between the bearing box. To the other side is called the free end, only bear radial load, axial can move relatively. Fixed end bearing must be at the same time and the fixed shaft and bearing box, a suitable bearing is able to withstand radial composite load bearing, for example, deep groove ball bearing, spherical roller bearings, double row or diagonal contact ball bearing or tapered roller bearing. Bear the radial bearing combination of pure radial load, such as inside and outside the circle without a guard of cylindrical roller bearing and deep groove ball bearing, four-point contact ball bearing or two-way thrust bearing combination, also can be used as a fixed end bearing. At this point, the second bearing provide two-way axial positioning, but must keep bearing box when installing a radial interval. The free end bearing in shaft due to thermal expansion, the length changes, bearing inner extrusion will not occur. Axial displacement may occur within the bearing and also can produce bearing ring and bearing seat. 'Cross fixed' refers to such a bearing configuration, each bearing to the shaft of one-way positioning, and in the opposite direction. This combination is mainly used for short axis. All can bear at least one direction axial load with radial bearing, including deep groove and angular contact ball bearings, tapered roller bearings and NJ type cylindrical roller bearing, using angular contact ball bearing or tapered roller bearing, in some cases, must be exerted load. A, bearing selection stage, need to consider many factors, Example: load, hardness, running environment, etc. ) First of all, a good bearing design will make bearing reaches its maximum life span. Two, correct storage, bearing before installing the best shall be kept in their original packaging. Need to stay clean, no moisture, relatively constant temperature environment. Rolling bearing should stay away from dust, water and corrosive chemicals. Shaking and vibration may be forever on the mechanical properties of the damaged bearing, therefore in the process of processing and storage should avoid vibration. General bearing should be kept level, some of the heavier bearing long upright, will be deformation due to its own weight! Also, coated with grease, Or sealed) Bearing need to be careful, because the grease will change after long time storage density. When the bearing is used for the first time, there will be a certain degree of rotation noise. So, this kind of bearing on time should be to control according to the principle of first in first out! Three, clean, it is very important for rolling bearing. The rotation of the bearing ring surface is very smooth, is sensitive to damage caused by pollutants. Impurity particles are influenced by the excessive rolling rolling element and partial pressure in the bearing, eventually lead to permanent material fatigue. Four, comprehensive equipment installation, bearing should use the right tool to install and remove cautiously, Can be dismantled reference bearing series video) 。 Should choose the right tools! Industry experts estimate that premature bearing failure, 16% were caused by incorrect installation. Generally a large number of installation, generally take appropriate bearing installation of equipment.