A Thrust Cylindrical Roller Bearing with Interchangeability and No Fitting Tolerance Required

Abstract

The invention relates to a cylindrical roller thrust bearing with characteristics of interchangeability and no requirement of fit tolerance installation. According to the cylindrical roller thrust bearing, inner diameters and outer diameters of a first rotation ring (7) and a second rotation ring (11) are equal, the center lines of the first rotation ring and the second rotation ring are provided with a 45 DEG notch, the inner diameter of the first rotation ring is larger than an outer diameter of a rotation shaft (1), the outer diameter of the first rotation ring is matched with a diameter of an inner hole of a shaft base (6), a position limitation ring (12) is provided with an inner concave ring groove and a center hole, the inner diameter of the center hole is matched with the inner diameter of the first rotation ring, the inner diameter of the inner concave ring groove is matched with the outer diameter of the first rotation ring, an outer diameter of a cage with a pocket (8) is matched with an inner diameter of a cage outer ring (9), and the cage outer ring and the cage with the pocket are fastened through a plurality of cylindrical pins (10). According to the present invention, the first rotation ring and the second rotation ring provide an installation position interchange effect so as to reduce processing precision of the cylindrical roller thrust bearing, expand an application range, prolong a service life, and reduce processing precision of the rotation shaft and the shaft base.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a thrust cylindrical roller bearing which is interchangeable and does not require installation and matching tolerances. Background technique [0002] figure 1 It is a schematic diagram of the assembly of a thrust cylindrical roller bearing, including a shaft 1, a shaft ring 2, a roller 3, a cage 4, a seat ring 5 and a shaft seat 6, and several rollers 3 are installed in the cage 4. The inner diameter of the shaft 1 and the shaft ring 2 adopts an interference fit, while the inner diameter of the shaft 1 and the seat ring 5 adopts a large clearance fit, indicating that the inner diameter of the shaft ring 2 and the inner diameter of the seat ring 5 are not equal, and the outer diameter of the seat ring 5 and the inner diameter of the seat ring 5 are not equal. The shaft seat 6 adopts an interference fit and the outer diameter of the shaft ring 2 is not required, which...

AI Technical Summary

Problems solved by technology

Since the inner and outer diameters of the shaft ring 2 are not equal to those of the seat ring 5, the shaft ring 2 and the seat ring 5 cannot be used interchangeably, that is, the shaft 1 cannot be used with the seat ring 5 and the shaft seat 6 cannot be used with the shaft If the ring 2 is used together, the poor interchangeability means that the processing cost of the thrust cylindrical roller bearing is increased and the scope of use is reduced; secondly, the interference fit improves the machining accuracy of the shaft 1, the shaft ring 2, the seat ring 5 and the shaft seat 6, In particular, after repeated disassembly and assembly, the shaft 1 and the shaft seat 6 will be deformed, and even the surface will be scratched, so that the size of the interference fit cannot be guaranteed, and finally the thrust cylindrical roller bearing cannot be used normally.

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