Typically, the shaft is based on two bearings in the radial and axial support to be known as the fixed side of the bearing end bearings, which bear two kinds of radial and axial load, from a fixed axis and the relative bearing box The role of axial displacement. The other side will be known as the free end, only to bear radial load and axial relative movement can be.
Fixed-end Ball Bearing and shaft must be at the same time and bearing box with a fixed, is more appropriate to be capable of sustaining complex bearing radial load Ball Bearing, for example, Deep Groove Ball Bearings, Spherical Roller bearings and double row or pair angular contact Ball Bearings or tapered roller Bearing. Radial load to bear a simple combination of radial bearings, such as inside and outside the ring without ribs of cylindrical roller bearings with deep groove ball bearings or a four-point contact ball bearing or a combination of two-way thrust bearing, but also can be used as a fixed-side bearing. At this time, the second two-way bearing to provide axial location, but must be installed with the bearing box of maintaining a certain radial intervals. Free end bearings in the shaft due to thermal expansion, changes in length, Ball Bearing within the extrusion does not occur. Axial displacement can occur in the internal bearings, bearings may also occur with the bearing ring.
"Cross-fixed" refers to such a bearing configuration, each bearing a one-way on the shaft for positioning, and the opposite direction. This portfolio primarily for short. All at least be capable of sustaining an axial direction of the radial bearing loads are applied, including the deep groove and angular contact ball bearings, tapered roller bearings as well as the NJ type cylindrical roller bearings, angular contact Ball Bearings use tapered roller bearings, or when certain occasions, pre-load must be imposed.
