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Hydraulic machine because of its large size, heavy weight components, by casting, forging, machining, assembly and other process conditions, so the compressor itself working accuracy can not completely rely on mechanical processing itself to guarantee, and must be assembled in the process of adjustment to achieve the precision index.
Adjustment is operated according to the specific requirements of SKF bearing imports of precision and accuracy, keep on the related pre tightening and loosening of means and measures to ensure. Hydraulic machine used in all walks of life, because of its different uses the working accuracy requirements are also different, in production by using different standards in manufacturing. In the same industry due to the production of different products, the required accuracy can not be consistent. So the same industry standards, according to the different work condition is divided into several grades and corresponding to each precision index. Factory production by the technology department is established according to precision standard inspection program production machine and test outline, issued the relevant departments as a guidance document, which provides detection method about the project and parameters and the corresponding data, as the installation and adjustment and inspection standard.
Generally includes the required accuracy in assembly SKF import bearings in the process to achieve the adjustment to the. Such as hydraulic machine to the table level, column spacing deviation, table and the movable table flatness, the column is connected with the upper crossbeam perpendicularity, parallelism between the work table, the main oil cylinder in the working stroke and the work table, column verticality of upper and lower crossbeams and nut the contact rate. The process and results of SKF bearing imports precision adjustment and detection, the full-time staff approval signature before. Required detection in the process of adjustment of tools and fixtures in the production of professional technology personnel by the design plan in the production process of. Outline of the test and detection of adjusting operation ellipsis.

The general vibration IKO imported bearings of rolling bearings, IKO itself does not produce noise. Often feel "IKO import bearing noise" is in fact the sound effects in IKO bearing imports directly or indirectly with the surrounding structure vibration. This is why many times the noise problem can be regarded as related to the imported bearings vibration problems of IKO application.
(1) the excitation produced by loading the rolling body quantity change: when a radial load on a IKO imported bearings, the bearing load of the rolling element number may vary slightly in operation, this caused the migration direction of load. The resulting vibration is inevitable, but can be mitigated by axial pre load, loading on all rolling body (not applicable to cylindrical roller IKO bearing imports).
(2) the local damage: because the operation or incorrect installation, a small portion of the IKO bearing raceway and rolling body may be damaged. In the operation, rolled over the IKO import bearings damage to the components will produce a specific vibration frequency. Vibration frequency analysis can identify the IKO import bearings parts damaged. This principle has been used in the condition monitoring equipment, used for damage detection IKO bearing imports status. To calculate IKO import bearings frequency, please refer to the program "IKO import bearings frequency".
(3) the relevant components of accuracy: close fit between the ring and the IKO IKO import bearings imported bearing or shaft case, IKO imports bearing ring with the adjacent parts of shape matching deformation. If there is deformation, in operation it may lead to vibration.
(4): if the operation of pollutants in polluted environment, impurities may enter the IKO import bearings and rolling element rolling. The vibration level depends on the number of impurity particles are, compacted size and composition does not generate frequencies is typical, but you can hear a disturbing noises.