1 speed and temperature
with the development of science and technology, increasing spindle speed, speed range and thus the greater the bearing at high speed stability requirements are also increasing. Spindle bearing temperature rise is an important factor bearing speed limit. Under normal circumstances, the right choice bearing type, tolerance levels, allocation, clearance (preload)size, lubricants and lubrication methods, to a certain extent, improve the performance of high-speed rolling bearings.
2life and load capacity
Machine tools in general, the life of the spindle assembly is the main period of use to maintain spindle accuracy, therefore, required to maintain the accuracy of the bearing spindle component life and performance to meet the requirements. For heavy-duty or heavy cutting machine tools, bearings should first consider the carrying capacity.
3 stiffness and vibration resistance
to ensure the quality of the machining, the spindle system must have sufficient rigidity; otherwise it will have a greater re-mapping error or flutter. Vibration refers to the resistance to forced vibration and the ability to self-excited vibration. Components of the vibration is depends on the spindle axis and the bearing stiffness and damping. Bearing preload can be effectively used to improve the stiffness of the spindle system.
4 Noise
In the high-speed grinder, the grinding bearing noise is the main component of the noise machine should be used in low-noise rolling bearing.



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