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Harmonic reducer bearings are specialized bearings designed specifically for harmonic reducers. Harmonic reducer bearings consist of two surfaces. Harmonic reducer bearings are typically paired with cross roller bearings. Depending on their application, they are classified into two main types: the split outer ring and inner ring type (BCSF/BCSG series) and the integrated outer and inner ring type (BSHF/BSHG series). The rolling elements are cylindrical rollers, arranged in a 90° vertical orientation within the V-shaped raceway. This structure enables a single bearing to simultaneously withstand loads in various directions such as axial load, radial load, and overturning moment. These bearings have high stiffness, rotational accuracy, and composite load-bearing capacity. The shape of this type of bearing is compact, and it comes with built-in installation holes, making it convenient for customers to install directly, and suitable for various types of harmonic reducers.
The harmonic reducer is widely used in various fields such as industrial automation, robot arm joints, humanoid robots, semiconductor LCD production equipment, photovoltaic equipment, optical instruments, precision machine tools, etc. due to its high torque capacity, high rigidity, high positioning accuracy, high rotational accuracy, high speed, high stability, ultra-small size, and ultra-light weight. The CSF (G) series harmonic reducer is designed with cross roller bearings specifically for the harmonic reducers of HD Company. The inner and outer rings of the product are all designed with multiple layers of precision holes that can directly connect with the working part of the product. The bearings themselves have high precision, a compact structure, good sealing, strong bearing capacity, high rigidity, stable quality, high cost performance, and are highly praised by both domestic and foreign customers!
Harmonic transmission is a relatively unique type of power transmission method, which has unparalleled superiority compared to other transmission methods. It has advantages such as a large transmission ratio, high precision, large bearing capacity, high speed, small size, and light weight. It is widely used in fields such as space technology, electronic industry, military industry, robots, packaging machinery, printing machinery, medical devices, etc., and has a wide range of application space. We generally refer to it as harmonic reducer or harmonic drive machine.
After several decades of development both domestically and internationally, the development of harmonic reducers has been constantly evolving. The harmonic transmission technology has become increasingly mature. As the main accessory of harmonic transmission, cross roller bearings have also developed rapidly in recent years. The cross roller bearings used in harmonic transmission are slightly different in structure from ordinary cross roller bearings. The basic structural form is similar, basically adopting an outer ring segmented type and an overall inner ring structure. Compared with standard cross roller bearings, there are many installation holes machined on the inner and outer rings, especially the inner ring, from the outside to the inside, there are generally three different-sized and-numbered installation threads. This is the difference in appearance from the basic type of cross roller bearings. The materials all use GCr15 bearing steel, the outer ring is heat treated using the overall quenching process, and the inner ring uses the high-frequency quenching process on the roller surface. This is the difference from the ordinary cross roller bearing process.
Luoyang ONA Bearing Co., Ltd. (ONA) is a cross roller bearing manufacturer in the Chinese mainland industry. Relying on its long-term accumulation of research and production experience in cross roller bearings, and absorbing advanced experience and technology in cross roller bearings used for harmonic transmission from abroad, it has refined its product range and developed a series of cross roller bearing products for harmonic transmission. Through continuous optimization and innovation, it has achieved the goal of mass production.
CSF(G) type harmonic reducer bearing:
The overall structure of the inner ring, the outer ring is divided into two pieces. During installation, no flanges or bearing seats are required, and it can be directly installed and connected. It is very convenient to use and is suitable for various harmonic reducer series of CSF(G). The bearing models of the CSF(G) series harmonic reducers are as follows:
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