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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Basic demand for rolling bearings for machine tool spindles Basic requirements for rolling bearings for machine tool spindles
1. Change and temperature rise. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
With the development of science and technology, the spindle speed of machine tools is getting higher and higher, and the scale of shifting is getting larger and larger. Therefore, the demand for high-speed working stability of bearings is becoming higher and higher. The temperature rise of the machine tool spindle bearing is an important factor in restraining the bearing speed. Under normal circumstances, the correct selection of bearing type, worse grade, equipment method, clearance (preload) size, smoothing agent and smoothing method can improve the high-speed function of rolling bearings to a certain extent.
2. Life and carrying capacity.
For a typical machine tool, the life of the spindle is the period of application of the spindle accuracy. Therefore, the accuracy of the required bearing can satisfy the life expectancy of the spindle component. Regarding heavy-duty machine tools or powerful cutting machines, the primary bearing capacity of air-filter bearings should be the primary.
3. Stiffness and vibration resistance.
In order to ensure the processing quality of the machine tool, it is necessary to make the spindle system have a satisfactory stiffness, otherwise it will present a large repetitive error or even tremor. Anti-vibration is the ability to resist forced oscillations and self-oscillation. The vibration resistance of the main shaft is determined by the stiffness and damping of the main shaft and the bearing. The use of preloaded rolling bearings can effectively improve the rigidity of the spindle system.
4. noise.
In high speed grinding machines. The noise of the grinding head bearing is an important component of the whole noise, so low-noise rolling bearings should be used.
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Source: Bearing network time: 2014-08-11