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China’s cross roller bearing technology status in 2018: Gradually replace imported bearings

Views:64     Author:Site Editor     Publish Time: 2019-04-09      Origin:Site

The crossed roller bearing is a special type of bearing with inner ring splitting and outer ring rotation. Since the divided inner ring or outer ring is fixed to the cross roller collar after being loaded into the roller and the spacer, to prevent separation from each other, the operation is simple when the cross roller collar is installed. Since the rollers are arranged in a cross arrangement, only one set of crossed roller collars can withstand loads in all directions, and the rigidity is increased by 3 to 4 times compared with the conventional model. At the same time, since the inner ring or the outer ring of the crossed roller bearing has a two-divided structure, the bearing clearance can be adjusted, and even if a preload is applied, a high-precision rotational motion can be obtained. Moreover, due to its special structure, it is commonly used as a joint bearing in industrial robots.

slewing bearing,slewing ring

slewing bearing,slewing ring

Features of crossed cylindrical roller bearings:
1, with excellent rotation accuracy
The internal structure of the crossed roller bearing is arranged at 90° perpendicular to each other by rollers. The spacers or spacers are arranged between the rollers, which can prevent the inclined rollers of the rollers from being mutually inspected and effectively prevent the rotational torque. Increase. In addition, there is no contact or locking phenomenon of the roller;

Non-standard cross roller bearings are also available because the inner and outer rings are divided and the gap can be adjusted to obtain high-precision rotary motion even when preloading is applied.

2, the operation is simplified
The outer ring or inner ring that is divided into two parts is fixed together after the roller and the retainer are loaded, so the operation is very simple to install.

3. Withstand large axial and radial loads
Because the rollers are vertically aligned with each other through the spacers on the 90° V-groove rolling surface, this design allows the crossed roller bearings to withstand large radial loads, axial loads and moment loads. Directional load.

slewing bearing, slewing ring

slewing bearing, slewing ring

4, greatly save installation space
The size of the inner and outer rings of the crossed roller bearing is miniaturized to a minimum. In particular, the ultra-thin structure is a small size close to the limit and has high rigidity, so it is most suitable for the rotation of the joint portion or the rotating portion of the industrial robot and the machining center. A wide range of applications such as work tables, robot rotating parts, precision rotary tables, medical instruments, measuring instruments, and IC manufacturing equipment.

Roller bearings have become an integral part of precision technology research. In recent years, with the development of science and technology, cross-roller bearings have become an indispensable part of precision technology research. Due to the late start of China’s bearing research, it has been immersed in the lack of propaganda, which led to the monopoly of the domestic bearing market. However, imported bearings not only have a long supply cycle, but also insufficient supply, and the high price due to brand reasons has seriously restricted the development of bearing-related industries.

slewing bearing,slewing ring

slewing bearing,slewing ring

According to the bearing industry market analysis and analysis report, about 60% of domestic bearing orders come from imported bearings. In addition to the trust of imported brands, famous brands have complete product range, high precision and wide adaptability. The advantages. Throughout the domestic bearing manufacturers, most of the varieties are incomplete or not refined, resulting in the domestic bearings are not recognized.

However, this did not prevent domestic bearing manufacturers from continuing to study the pace of new technologies. Luoyang HGB Bearings continued to innovate its technology. After years of development research, the company launched a complete series of cross-roller bearing products, making domestic bearings a world in this field. Leading achievement. HGB’s products are not only widely acclaimed in China, but also exported to more than 60 countries and regions such as Europe, America and East Asia.

With the continuous advancement and development of China’s process technology, compared with imported bearings, domestic cross-roller bearings not only have considerable technical level and higher quality assurance, but also have obvious price advantages. It is believed that in the near future, domestically produced bearings not only beat the imported bearings in price, but also defeated foreign brands in terms of quality, service and types.

slewing bearing,slewing ring

slewing bearing,slewing ring bearing,hengguan

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