Overview, classification and application of crossed roller bearings
The structure of crossed cylindrical roller TIMKEN bearings is divided into outer ring split body, inner ring integral; outer ring integral, inner ring split body and outer ring inner ring are all three forms of integral, the rolling elements are cylindrical rollers, which are 90° perpendicular to each other Arranged in the V-shaped raceway, the rollers are separated by spacers. This structure allows a single bearing to withstand various loads such as axial load, radial load and overturning moment. At the same time, the external dimensions are miniaturized, and the bearing has high rigidity, rotation accuracy and composite load-bearing capacity. It is suitable for the joints and rotating parts of industrial robots, the rotating table of the machining center, the rotating part of the manipulator, and the precision rotating work. Tables, medical machinery, measuring instruments and other applications. The main types of Luoyang Baina crossed cylindrical roller bearings are:
RB type (integrated inner ring, separated outer ring), this model is the basic type of crossed roller bearings. The outer ring is divided into two pieces, and the inner ring is an integral structure, which is suitable for occasions that require the rotation accuracy of the inner ring.
Type RE (separated inner ring and integral outer ring) is also the basic type of cross-roller bearing. The external dimensions are the same as type RB, but the structure is the outer ring as a whole and the inner ring is divided into two pieces, which is suitable for the required inner ring In the case of rotation accuracy.
RU type (integrated inner and outer rings, with mounting holes), because the outer ring and inner ring have mounting holes, there is no need to fix the flange and support seat during installation. In addition, since the outer ring and the inner ring are of an integral structure, installation has almost no effect on performance, so stable rotation accuracy and torque can be obtained. Suitable for occasions where the outer ring and inner ring rotate.
RA type (integrated inner ring, split outer ring, ultra-thin), this model is a compact type that reduces the thickness of the inner and outer rings of the RB type to the limit. The structure is the same as the RB type. The outer ring has a split structure and is suitable for light weight , Jointly designed parts, such as the rotating parts of robots and manipulators.
RA-C type (the inner and outer rings are integral, the outer ring has cracks), the main dimensions are the same as the RA type, because this model has a notch structure in the outer ring, the outer ring also has high rigidity, so it is also used in the application of outer ring rotation occasion.
SX type (integrated inner ring, split outer ring, ultra-thin). Under the same shaft diameter, this type has a smaller cross-sectional size than RB type. Due to the ultra-thin design, the outer ring and inner ring have no mounting holes , It needs to be fixed by flange and support seat during installation, which is suitable for applications where the inner ring rotates.
CRBH type (integrated inner and outer rings, ultra-thin), due to the ultra-thin design and the outer ring and inner ring have no mounting holes, flanges and support bases are required to be fixed during installation. In addition, because the outer ring and inner ring are of integral structure, the installation has no effect on performance, and stable rotation accuracy and torque can be obtained. It is suitable for occasions where the outer ring and inner ring rotate but the size and miniaturization are required.