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Date: 2013-08-20

Rolling bearing improper installation failure

Bearing installation should use gasoline or kerosene to clean and dry before use and ensure good lubrication bearing the general use of grease lubrication oil lubrication can be applied. With grease lubrication should be used without impurities, antioxidant, anti-rust, extreme pressure grease such as superior performance. Excessive amount of grease filled bearings and bearing box volume of 30%-60% should not be. With good sealing roller bearing grease filling can be directly used by the user has no further cleaning structure.
Bearings must be applied equally in the circumferential ferrule end face is installed on the pressure to press into the ring may not want the first direct percussion instruments bearing end so as not to damage the bearing. Small amount of interference in the case at room temperature can be used to suppress sleeve bearing ferrule end face with a hammer beating sleeve will be pressed into the ring balance through the sleeve. If the high-volume installation can be used hydraulic press. Indentation should ensure the outer end face and shoulder shell inner end face and shoulder axis compression does not allow a gap.
Bearings must be installed in a dry, clean environment conditions. Before installation should check carefully with the axis and the shell surface, convex shoulder end, grooves and connecting surface processing quality. All connected with the surface must be carefully cleaned to remove the burr of casting is not processing surface must be the net sand. When the larger magnitude of interference can be used when the oil bath heating or inductor heating bearing method is 80 ℃ -100 ℃ maximum should not exceed 120 ℃ to install the heating temperature range. At the same time, the application of nuts or other appropriate methods for fastening the rolling bearing to prevent the bearing cooling shrinkage and width direction between the ring and the shaft shoulder generation gap.
1 Drilling, on the bearing groove, chamfer, car end does not allow installation. Otherwise, easy to cause the deformation of bearing ring, bearing accuracy and life of working surface at the same time, cutting off the metal easily into the bearing, to accelerate the raceway and rolling body of the bearing wear, causing premature failure.
2 Direct hit bearing ring hammer does not allow installation. Datum end bearing close to the shaft shoulder mounted in qing. Datum end bearing is based on rolling bearing end without typing to distinguish, deep groove ball bearings, self-aligning ball bearings, bearings, self-aligning roller bearings and needle roller bearings, to no end the datum; angular contact ball bearings and tapered roller bearings, to have the word end as a reference surface.
3 when installing pressure should be added in the installation ferrule end-face interference fit, which is mounted on the shaft, the pressure shall be added to the inner ring of the bearing surface; load bearing seat hole, pressure should be added on the outer ring of the bearing surface. Not allowed through the rolling body and a holding pressure transfer.
4 for the inner ring, outer ring is tightly matched bearing, sliding fit, is not separable should first roller bearing mounted on the shaft, the shaft together with the bearing load bearing shell hole; can be separated, inner, outer ring can be installed separately.
5 in order to prevent the bearing inclined installation, installation center line axis and the bearing hole must be coincidence. If the installation is not correct, the need to install, must pass through the end face of the inner ring, rolling bearing pull.


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