Cross-roller bearing is a special combined bearing with small cross-section size, high bearing capacity, high rigidity and high precision. Cross-roller bearing mainly consists of outer ring, inner ring, cylindrical rollers and spacer blocks. The cylindrical rollers are arranged in a cross between the outer ring and the inner ring, and the rollers are separated by spacer blocks, which can prevent the rollers from rubbing against each other and reduce the increase of rotating torque. In addition, the rollers are in linear contact with the raceway surface and cross-shaped, so the bearing has less elastic deformation and better rigidity when receiving overturning load. At the same time, the bearing can bear radial load, axial load and overturning moment load at the same time. Therefore, crossed roller bearings are especially suitable for applications with high rigidity and high running accuracy, such as joints of industrial robots, precision rotary tables, direct drive motors, precision reducers, medical instruments, aerospace, radar communication, optical equipment, printing and dyeing machinery, IC manufacturing machines, industrial automation equipment and so on.
RE2008 RE2508 RE3010 RE3510 RE4010 RE4510 RE5013 RE6013 RE7013 RE8016 RE9016 RE10020 REE 11012 REE 11015 REE 11020 REE 12016 REE 12025 REE 13015 REE 13025 REE 14016 REE 14025 REE 15013
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RB2008 RB2508 RB3010 RB3510 RB4010 RB4510 RB5013 RB6013 RB7013 RB8016 RB9016 RB10016 RB10020 RB11012 RB11015 RB11020 RB12016 RB12025 RB13015 RB13025 RB14016 RB14025 rb15015
Solve the problems encountered in using RU21040 bearing and the problems that should be paid attention to in bearing analysis.
(1) the fractal characteristics of bearing microstructure and the resolution dependence of specific bearing observation: it may cause the quantitative analysis results of its microstructure to be strongly dependent on the image resolution, which should be paid more attention to when carrying out quantitative analysis on the surface morphology of bearing fracture and storing and processing digital image files of microstructure;
(2) Limitations of non-quantitative research on bearing microstructure of 2)RU21040 bearing: Although qualitative research on microstructure is fashionable and can meet the needs of material engineering, scientific research on bearing analysis always requires scientific quantitative measurement of microstructure geometry and error analysis (random error, systematic error and gross error) of the obtained quantitative analysis results;
(3) Limitations of bearing microstructure section or projection observation, etc. The deep corrosion observation of bearing graphite and pearlite three-dimensional structure has shown that this kind of limitation easily leads to people's misinterpretation of bearing cross-sectional images or projection images.
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