Curve roller bearing
Curved roller bearings are composed of a bolt as the inner raceway of the roller set and a thick-walled outer ring. The shoulder of the bolt shaft and the end retaining ring are pressed on the bolt form the guiding surface of the outer ring along the two lateral directions. When the curved roller moves on a flat raceway or a cam disc, the internal stress of the roller will increases due to the elastic deformation of the outer ring.
Tolerance
Under normal circumstances, the dimensional tolerance and rotation accuracy of the standard bearing outer ring is P0, but it is not suitable for the outer surface to be arc-shaped, the tolerance is mm, and the bolt diameter tolerance is h7.
Installation method
When the curve roller is installed, you must pay attention to the fit between the bolt and the hole, and there is no gap as much as possible. The recommended tolerance zone for the fitting hole is H7. The fitting hole must have a small chamfer on the shaft to obtain the best bearing surface. There must be anti-loosening measures of tightening the nut. The ribs of the bolts should be avoided of hammering during installation. When the nuts of the grooves on the end of the bolts are tightening, suitable tools should be used to fix the rollers or adjust the position of the eccentric sleeve appropriately. The oil hole on the bolt raceway should be located in the non-load area as much as possible.
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