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Typically, a shaft with two bearings are a certain distance apart to give support. In order to adapt to the shaft, and varying degrees of hot shell impacts when installing a bearing should be axially and one can swim on the bearing to the shaft (bearing that walks) in order to prevent stuck due to axial elongation or contraction. Floating bearing usually choose inner or outer ring of cylindrical roller bearings without ribs, this is an internal structure allows the bearings because of the adequate axial displacement for shaft and housing. At this point, the inner ring and shaft, and the shell holes in the outer ring can be a tight fit.
Selection of bearing type, bearing easy installation and removal, must also be balanced, particularly for large and extra large bearing installation and removal are particularly important. Separable in the outer ring of angular contact ball bearings, tapered roller bearings, cylindrical roller bearings and needle roller bearings, easy installation and removal, their inner and outer rings can be installed separately on the shaft or housing bore. In addition, inner diameter with a conical bore, spherical roller bearings with adapter sleeve, double row cylindrical roller bearings and self-aligning ball bearings and is easy to install and disassemble.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7217B NSK | 85 | 150 | 28 |
| 7303BDB NSK | 17 | 47 | 14 |