News of INA bearing cross reference
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Cross-roller bearings, which are divided into inner rings or outer rings, are fixed to the cross-roller collars after they are installed in the rollers and spacers to prevent them from separating.
Therefore, the cross-roller bearings are installed when the cross roller bearings are installed. simple. Since the rollers are arranged crosswise, only one set of cross roller collars can bear the load in all directions. Compared with the conventional models, the rigidity increases by 3 to 4 times. At the same time, because the inner ring or outer ring of the cross roller bearing is a two-part structure, the bearing clearance can be adjusted, and even if preload is applied, high-precision rotation can be achieved.
1, has excellent rotational accuracy
The internal structure of the cross roller bearing adopts rollers arranged at 90° to cross each other vertically.
There are spacers or spacers between the rollers to prevent the rollers from tilting between them. In addition, no contact or lock-up phenomenon of the roller occurs, and because the inner and outer rings are divided, the gap can be adjusted, and even if a preload is applied, high-precision rotation can be obtained.
2, operation and installation simplification
The outer ring or inner ring that is divided into two parts is fixed together after being loaded into the roller and the retainer, so the operation during installation is very simple.
3, withstand large axial and radial loads
Because the rollers are arranged perpendicular to each other through the spacers on the V-groove running surface which is 90°.
4, substantial savings in installation space
The size of the inner and outer rings of a crossed roller bearing is miniaturized. In particular, the ultra-thin structure is a compact size that is close to the limit and has a high rigidity. Therefore, it is most suitable for the rotation of joints or rotation parts of an industrial robot or a machining center. It is used for a wide range of applications such as worktables, robotic rotating parts, precision rotating tables, medical instruments, measuring instruments, and IC manufacturing equipment.
5. High-speed capability
6. Reduce shaft length and machining costs, thermal expansion leads to limited changes in geometry
7. Using nylon separator, low rotational inertia, low starting torque, easy to control angle indexing
8. Optimize the pre-tightening force, high rigidity, high precision of guided rollers
9. Carburized steel provides excellent impact resistance and surface wear resistance
10. Simple but fully lubricated
Domestic cross cylindrical roller bearing classification and model series
RB type (divided outer ring type)ina bearing cross reference
RB series models are basic types of crossed-cylindrical roller bearings. The inner and outer rings are miniaturized in size. The outer ring is divided, and the inner ring is an integral design. It is suitable for parts requiring high rotation accuracy of the inner ring.
RE type (inner ring division type)ina bearing cross reference
The RE series model is a new type produced by the XRB type design concept, and the main size is the same as the XRB type. The structure is that the inner ring is a split type, and the outer ring is an integral design, which is suitable for a part requiring a high rotation accuracy of the outer ring.
RU type (inner and outer ring type)
The RU series models do not require the fixing flanges and support bases because the mounting holes have already been machined. In addition, since an integrated inner and outer ring structure with a seat is adopted, the installation has almost no effect on the performance, so stable rotational accuracy and torque can be obtained. Can be used for outer ring and inner ring rotation.
RBC type (outer ring type)
The RBC series model (corresponding to IKO CRBC series) has a structure in which the outer ring is divided and the inner ring is an integral design with a cage full of roller bearings. Suitable for parts that require high inner ring rotation accuracy.
CRBH type (inner and outer ring type)
The inner and outer rings of the CRBH series models are all integrated and used for the rotation of the outer ring and the inner ring.
RA type (outer ring segmentation, ultra-thin type)
The RA series model is a compact type that reduces the thickness of the RB inner and outer rings to the limit. Suitable for parts that require a lightweight, compact design, such as robots and robotic rotating parts.
SX type (outer ring type)
The SX series model structure is similar to the RB series. The outer ring is a two-part structure. It is connected by three spring snap rings. The inner ring is designed in one piece and is suitable for places with high inner ring rotation accuracy.
XRU08 type (inner and outer ring type)
The XSU08 series is similar to the RU series in that the inner and outer rings have been machined with mounting holes so that the fixed flange and the support base are not required. Due to the use of an integrated inner and outer ring structure with a seat, the installation has almost no effect on the performance, so stable rotation accuracy and torque can be obtained. Can be used for outer ring and inner ring rotation.
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