How to improve the matching precision cross roller bearing installation.

In order to improve the matching precision crossed roller bearing installation, must use the measurement methods and tools do not make the bearing deformation, precision measurement of bearing inner and outer circle with the surface size of the actual project, the measurement can be related to the inner and outer diameters of all be measured, and make a comprehensive analysis of the measured data according to this, precision, matching with the shaft and hole of shaft
The installation part size.
The distribution of shaft and hole in the actual measurement of the corresponding size and geometry, temperature and measurement should be carried out in the bearing under the same. To guarantee the higher actual tie effect, the shaft and hole matched with a bearing surface, the roughness should be as small as possible.
In the above measurement, should be in the outer circle and cross roller bearing inner hole, and the corresponding surface of the shaft and the seat hole, on both sides near the assembly chamfer, respectively two groups of marker can indicate the maximum deviation direction, so that in the actual assembly, so that the large deviation match two party aimed at the same azimuth, in this assembly, both of deviation to partially offset. Make two groups to purpose, is the deviation compensation can be considered, the rotating high precision bearings on both ends of the respective even increased, and the bearing seat hole and both ends of the trunnion coaxiality error are partially eliminated. The mating surface to surface strengthening measures, such as sandblasting, precision plunger diameter slightly larger plug a hole, are beneficial to improve matching precision. Large and outer bearing surplus volume, in order to convenient installation, there also will be the outer circle and the bearing seat hole is made with a small taper, the installation on two square taper fit, and cover with control outer advance amount, the amount of interference in the predetermined range, while the end cover end face friction resistance of the outer end face also contribute to the fixed ring, to prevent the occurrence of peristalsis. This installation method is particularly convenient for bearing the vertical installation.
According to the load direction, acting on the cross roller bearing inner ring and the outer ring of the nature and which side of the ferrule is rotating, the load can be divided into the rotating load, static load or non directional load. Under the rotating load and non directional loads shall be taken with the (static ring interference fit),static load bearing ferrule, desirable transition fit or movable fit (clearance).
The bearing load,Large or withstand the impact load, vibration, the interference must be increased. The hollow shaft, thin-wall bearing box or light alloy, plastic housings, also need to slim bearings increase the amount of interference. The requirement to maintain high rotation, should be used in high precision bearings, and improve the dimensional precision of shaft and bearing box, to avoid interference is too large. If the interference is too large, may make the geometry precision bearing shaft or bearing box
Geometry, to the detriment of the rotating precision bearings.