The development of the machine tool industry in heavy industry is extremely rapid, invisibly driving the development of the chain industry. Machine tool spindle bearings are an important part of them, and the selection criteria must refer to a number of factors. In order to ensure trouble-free application of the bearing, attention to the bearing oil used is essential.
With the development of science and technology, the spindle speed of the machine tool is getting higher and higher, and the shift range is getting larger and larger. Therefore, the requirements for the high-speed running stability of the bearing are getting higher and higher. The temperature rise of the machine spindle bearing is an important factor limiting the speed of the bearing. Under normal circumstances, the correct choice of bearing type, tolerance, etc., configuration, clearance (preload) size, lubricant and lubrication methods can improve the high-speed performance of rolling bearings to a certain extent.
Life and carrying capacity
For a general machine tool, the life of the spindle assembly mainly refers to the service life of the spindle accuracy. Therefore, the accuracy of the bearing is required to maintain the performance of the spindle assembly. For heavy-duty or powerful cutting machines, the bearing capacity of the bearing should be considered first.
2. Stiffness and vibration resistance
In order to ensure the processing quality of the machine tool, the spindle system must have sufficient rigidity, otherwise it will generate large re-emulation errors and even flutter. Vibration resistance refers to the ability to resist forced vibration and self-excited vibration. The vibration resistance of the spindle assembly depends on the stiffness and damping of the spindle and bearing. The use of preloaded rolling bearings can increase the stiffness of the spindle system.
3. Noise
In high-speed grinding machines, the noise of the grinding head bearing is the main component of the noise of the whole machine, and low-noise rolling bearings should be used. The spindle of the spindle of the machine tool is the key component of the machine tool. Its performance will directly affect the parameters such as the rotation accuracy, speed, rigidity, temperature rise and noise of the machine tool, which will affect the machining quality of the workpiece. In order to maintain the machining capacity of the machine, high-performance imported bearings must be used. For more information about machine tool spindle bearings, you can call us.
