Crossed roller slewing rings and precision crossed roller bearings play an important role in many high-precision, high-load applications. They have outstanding characteristics such as high rigidity, high rotation accuracy, stable rotation moment, and high load-bearing capacity, making them ideal choices in many fields.

The rolling elements of crossed roller slewing bearings are generally cylindrical or tapered rollers, and these rollers are arranged crosswise in the V-shaped raceway groove. This arrangement enables the bearing to bear radial, axial and overturning loads simultaneously. In addition, the rollers are separated by nylon spacers, which prevents the rollers from deflecting and avoids the increase in rotational torque due to friction between the rollers, thereby avoiding bearing locking. Crossed roller bearings can be easily assembled in all directions of the spindle, making them very convenient in use.

Precision crossed roller bearings also have the characteristics of high rigidity, high rotation accuracy, stable rotation moment and high load-bearing capacity, but they are different from crossed roller slewing bearings in structure and application. Precision crossed roller bearings are generally used in precision devices such as high-precision rotary tables, dividing heads, and measuring instruments, and play a vital role in ensuring the accuracy and stability of these devices.

Precision crossed roller bearings usually consist of two sets of cylindrical or tapered rollers arranged crosswise at 90 degrees. These two sets of rollers correct each other in the V-shaped raceway groove, making the bearing have high rotational accuracy and stable rotational torque. At the same time, the spacing and preload between the rollers can be fine-tuned by adjusting shims, which allows the bearing to be optimized according to actual application needs. In addition, precision crossed roller bearings have a compact structure, high rigidity, and can withstand higher radial and axial loads, giving them broad application prospects in the field of high-precision rotation.

Although crossed roller slewing bearings and precision crossed roller bearings both have the characteristics of high rigidity, high rotation accuracy, stable rotation moment and high load-bearing capacity, they are different in application scenarios. Crossed roller slewing bearings are mainly used in situations that need to bear multiple loads at the same time, such as some high-precision CNC machine tools, industrial robots, rotating worktables and other equipment. Precision crossed roller bearings are mainly used in some high-precision measuring instruments, rotary tables, dividing heads and other precision devices.

With the continuous development of science and technology, the performance and quality requirements for crossed roller slewing bearings and precision crossed roller bearings are also constantly increasing. In the future, these two bearings are expected to play a greater role in a wider range of application fields such as high load, high precision, and high speed. For example, in fields such as Industry 4.0, aerospace, and new energy, crossed roller slewing bearings and precision crossed roller bearings are expected to exert their characteristics such as high rigidity, high rotational accuracy, stable rotational torque, and high load-bearing capacity, and provide services for these fields. Progress provides stronger support.

Crossed roller slewing bearings and precision crossed roller bearings play an important role in many fields by virtue of their high rigidity, high rotational accuracy, stable rotational moment and high load-bearing capacity. Understanding the differences between them and their respective application scenarios is very important for better selection and use of these bearings. With the continuous development of science and technology, we have reason to believe that crossed roller slewing bearings and precision crossed roller bearings will have wider application prospects and higher development levels in the future.

The production process of crossed roller bearings mainly includes the following steps:

Alignment treatment: Through alignment treatment, the parallelism between the raceway surface of the inner ring and the outer ring and the base surface of the roller spherical surface is within 0.5.

Grinding treatment: Grinding treatment is to improve the processing accuracy and surface roughness of the raceway surface, so that the raceway surface can reach a mirror level.

Assembly: Assemble the ground inner ring and outer ring, and adjust the clearance at the same time.

The brands of crossed roller bearings include Japanese NSK, German FAG, Swedish SKF, Japanese NTN, etc.

Crossed roller bearings are used in a wide range of applications, such as joints and rotating parts of industrial robots, rotating tables of machining centers, rotating parts of manipulators, precision rotating tables, medical machines, calculators, IC manufacturing equipment and other equipment.

Cross Roller Slew Bearing

The cross roller slewing bearing has compact structure, light weight, high slewing precision, and can bear axial force, overturning moment and large radial force at the same tim.

Precision Turntable Bearings

Rotary table bearing is a slewing mechanism whose outer ring rotates and inner ring supports. It is mainly divided into three series: YRT type, YRTS type and YRTM type. These th.