In general, tight interference fit the installation of double row ball slewing bearing must be close to the shaft shoulder. Test method: (1) the light method. The lamp alignment Koyo bearings and shaft shoulder, see the leakage judgment. If no leakage, installation is correct; if the light evenly along the shaft shoulder around, the bearing and shaft shoulder is not close, with the pressure bearing close; if partial leakage, the bearing installation tilt, can be hand hammer, brass or percussion bearing inner ring sleeve, is slowly. (2) to test the feeler gauge. Feeler gauge thickness shall be 0. 03mm began. Test, test in several in the bearing inner ring end face and shoulder the entire circumference, if there is a gap and very uniform, indicating that miniature ball bearings is not installed in place to deal with bearing, double row self-aligning ball bearing inner ring of pressure it tightly against the shoulder; if the increased pressure is not tight, the Journal fillet positions fillet is too large, the bearing is stuck, should be trimmed journal fillet, make its become smaller; if it is found that the end surface of the inner ring and the bearing shoulder thickness gauge individual parts can pass, not at this time must be removed, to be repaired, re install.
The principle of lubricating bearings and three row roller slewing bearing are basically the same, only the bearing working condition is bad, its performance can achieve effective lubrication depends to a large extent on the bearing.
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