Both ends with the fixed spherical roller bearing
One end is fixed, but one end is easy to swim. With many methods, are generally in order to cope with the long time operation, temperature difference between the spindle and the outside excessive expansion of the axial size change (mainly produces is the axial size length and orientation deviation caused by the fixed at both ends of the spindle, spindle expanded spindle length caused by bending phenomenon). The usual practice is to fix the bearings at one end of the shaft in fixed direction and the other at the end..Fixed. If the axial positioning requirements more sophisticated more accurate general treatment, head office level, limit bearing sliding bearing inward, back a few millimeters with two sets of silk began to handle crushed cap. Thus, the bearing is positioned at one end of the spindle.
Of course, if the requirements are not too strict, you can use elastic retaining ring positioning. Then the bearings and the box can be fixed. General practice is relatively simple. Make a step smaller than the outer ring of the bearing to limit the sliding of the bearings. Make a bearing cover, with the inner ring step, and press it on the outer ring of the bearing. Compression end cover. One end of the spindle is completely dead. Of course, depending on the selected bearings, the compression method is different.There are two options for moving sides. The utility model relates to a sliding connection, which depends on the clearance between the inner ring of the bearing and the main shaft or the outer ring of the bearing and the box body. Then leave enough sliding space to support the bearings at the end. The other option is a radial roller bearing without rings. Release by sliding on the inside of the bearing.
Self-aligning bearings are used at both ends. If the bearings are fixed, radial movement will not occur. It only needs to be fixed in the axial direction so as to prevent the axial movement. The general means is to do steps, for example, to enlarge the size of the middle of the two plate bearings, or to keep the axle fixed on one side and leave a space in it. Finally, you can also make a hole in the shaft, fixed with a fixed screw.
