Typically, axis are two bearings in radial and axial support, at this point, on one side of the bearing is called a fixed-side bearing, which accommodate both radial and axial loads, fixed relative axial displacement between the shaft and the bearing box. Call free on the other side, only take radial loads, axial can be relatively mobile, to address the arising due to changes in temperature interval of the axis scaling problems and install the bearing errors.
For a fixed-side bearing, select available rolling-axial movement (such as cylindrical roller bearings) or Assembly move (such as radial ball bearing) bearing. On the short axis, fixed and free side not other cases, using only unidirectional fixed axial movement of the bearing (such as radial thrust ball bearings).



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