China Cross Roller Bearing
The rolling elements of Cross roller bearings are generally cylindrical rollers or tapered rollers arranged in a crisscross arrangement on a single raceway. The rollers are separated by cages or isolating blocks. Sub-bearings have higher rotation accuracy, larger load-bearing capacity, smaller dimensions and higher rotation speed and rigidity, and have a wide range of uses and superiority that other types of bearings cannot match.
Generally, according to the different rolling elements, cross roller bearings can be divided into cross cylindrical roller bearings and cross tapered roller bearings. let's take a look at the classification of cross cylindrical roller bearings.
The structure of the cross cylindrical roller bearing is divided into three types: outer ring and inner ring; outer ring and inner ring; and inner and outer rings. The rolling elements are cylindrical rollers, which are arranged vertically at 90° with respect to each other. The rollers in the type raceway are separated by spacers. This special structure allows the bearing to withstand various loads such as axial load, radial load and overturning moment.
It can be roughly divided into the following categories:
RB : This model is the basic type of cross roller bearings. The outer ring is divided into two pieces, and the inner ring is an integral structure. It is most suitable for occasions that require the rotation accuracy of the inner ring.
RE: It is also the basic type of cross roller bearings. 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. It is most suitable for occasions that require the rotation accuracy of the outer ring.
RA: This model is the basic type of cross roller bearing. The outer ring is divided into two pieces, and the inner ring is an integral structure. It is most suitable for occasions that require the rotation accuracy of the inner ring. This model is a compact type that reduces the thickness of the RB inner and outer rings to the limit, and is most suitable for parts with light weight and compact design.
RA-C: The main dimensions are the same as RA cross roller bearing. Because this model has a notch structure in the outer ring, the outer ring also has high rigidity, so it can also be used in applications where the outer ring rotates.
CRBH: Its structure is a whole inner and outer ring cross roller bearing, adopts ultra-thin design and there is no mounting hole in the inner and outer ring, and it needs to be fixed by flange and support seat during installation.
RU: Its structure is an integral inner and outer ring cross roller bearing. Since the inner and outer rings have mounting holes, no fixed flange and support seat are required during installation. It is suitable for occasions where the outer ring and the inner ring rotate.
SX: The structure of this kind of cross roller bearing is that the integral inner ring and outer ring are separated. Due to the ultra-thin design, the outer ring and the inner ring have no mounting holes. The flange and the support seat are required to be fixed during installation, which is suitable for applications where the inner ring rotates well.
