low price harmonic reducer bearing
Table of Contents
1.Harmonic Reducer Bearing
Harmonic reducer bearing is a professional supporting bearing for harmonic reducer. The bearing of the harmonic reducer is mainly composed of two surfaces. The harmonic reducer is equipped with crossed roller bearings, which are divided into two categories: outer ring split, inner ring integral (BCSF/BCSG series) and outer ring and inner ring integral (BSHF/BSHG series) according to their application occasions.
The rolling elements are cylindrical rollers, which are arranged in the V-shaped raceway vertically at 90° to each other. This structure enables a single bearing to bear loads in all directions such as axial load, radial load and overturning moment at the same time. Mounting holes are convenient for customers to install directly, and are suitable for various types of harmonic reducers.
Harmonic reducers are divided into two categories: outer ring split, inner ring integral (BCSF/BCSG series) and outer ring and inner ring integral (BSHF/BSHG series) according to their application occasions. The rolling elements are cylindrical rollers, which are arranged in the V-shaped raceway vertically at 90° to each other.
This structure enables a single bearing to bear loads in all directions such as axial load, radial load and overturning moment at the same time. Mounting holes are convenient for customers to install directly, and are suitable for various types of harmonic reducers.
2.Main features and classification of harmonic reducer bearings
Harmonic drive is a very special power transmission mode, which has the incomparable advantages of general transmission modes. It has many advantages such as large transmission ratio, high precision, large bearing capacity, high transmission efficiency, small size and light weight.
It is widely used in space technology, electronic industry, military industry, robots, packaging machinery, printing machinery, CNC machine tools, medical equipment and other fields, and has a very wide application space. We generally call it a harmonic reducer or a harmonic reducer, and the output bearing used in the harmonic reducer is a crossed roller bearing, which we call a harmonic reducer bearing.
The harmonic reducer is mainly composed of three parts, namely the rigid wheel, the flexible wheel and the wave generator, but there are other parts besides the support transmission bearing. The bearing type required for the entire harmonic reducer component is deep groove ball Bearings, thin-walled flexible bearings and non-standard crossed roller bearings, the specific structure is shown in the following figure:
After decades of development at home and abroad, the development of harmonic reducers is also changing with each passing day, and the harmonic drive technology is becoming more and more mature. In recent years, it has also developed rapidly in China.
The crossed roller bearing for harmonic drive is a non-standard structure. It is very different from the ordinary crossed roller bearing in appearance and structure. There are many mounting holes on the inner and outer rings, especially the inner ring. There are three layers of threaded holes with different sizes and numbers, which is the biggest difference from the basic type crossed roller bearing in appearance.
The material is GCr15 bearing steel, but the outer ring heat treatment adopts the overall quenching process, while the inner ring adopts the raceway surface quenching process, which is the difference compared with the standard type cross roller bearing heat treatment process.
Crossed roller bearings for harmonic reducers have the following main features:
*High load carrying capacity design
*High rigidity
*Dimensions and rotation accuracy are higher than international standards
* Bear the load in any direction at the same time
*The smoothness of rotation is good
*Small and small space is easy to be compact and compact
*Easy to install and adjust
*Various bearing types and sizes for best choice
*Customized designs can be provided
According to the above characteristics and the different structural types of the harmonic reducer, the harmonic reducer bearing is also divided into different structural types, specifically:
CSF series harmonic reducer crossed roller bearing (standard type)
CSG series harmonic reducer crossed roller bearing (high rigidity type)
CSD series harmonic reducer crossed roller bearing (thin section type)
SHF series harmonic reducer crossed roller bearing (standard type)
SHG series harmonic reducer crossed roller bearing (high rigidity type)
SHD series harmonic reducer crossed roller bearing (thin section type)
Compared with similar imported harmonic reducers, domestic harmonic reducers still have a great disadvantage in quality, but with the continuous improvement of my country’s harmonic reducer manufacturing technology, the quality of domestic harmonic reducers will continue to improve.
It is guaranteed and has advantages in price, and it has strong competitiveness in the domestic market. The localization of harmonic reducer bearings and harmonic reducers continues to advance, thereby changing the unfavorable market situation of these high-precision robot reducer products that have been monopolized by foreign companies for a long time and are urgently needed in the domestic market.
With the continuous development and progress of a number of domestic harmonic reducer manufacturing enterprises, the competitiveness of my country’s harmonic reducer and supporting bearings in the international market has become stronger and stronger.
China is actively promoting the development of the industrial robot industry, and the demand for high-precision robot harmonic reducers has further increased, which requires domestic harmonic reducer enterprises and harmonic reducer supporting bearing manufacturers to support each other and continuously improve the manufacturing level , accelerate the transformation and upgrading of the harmonic reducer and bearing industry, narrow the quality gap with imported precision reducers, and realize the comprehensive localization of all supporting key components of domestic industrial robots.
