Spindle requirements for rolling bearings
First, the speed and temperature
With the development of science and technology, more and more high spindle speed, speed range is growing, therefore, bearing high speed stability requirements are also getting higher and higher. Machine tool spindle bearing temperature is an important factor limiting the speed of the bearing. Under normal circumstances, the correct choice of bearing type, tolerance level, allocation, clearance (preload) size, lubricants and lubrication methods, can improve speed performance of rolling bearings to a certain extent.
Second, the life and carrying capacity
General machine tools, life spindle assembly mainly refers to its precision spindle holding period of use, therefore, it requires precision bearing spindle assembly to maintain performance to meet the requirements of life. For heavy-duty machine tools or heavy cutting machine, you should first consider the carrying capacity of the bearing.
Third, rigidity and vibration resistance
In order to ensure processing quality machine, you must have sufficient rigidity spindle system, otherwise it will produce a large complex mapping error even flutter. Vibration resistance refers to the ability to resist the forced vibration and self-excited vibrations by. Vibration of the spindle assembly depends on the stiffness and damping of the spindle and the bearing. Rolling using preload can effectively increase the stiffness of the spindle system.
Fourth, noise
In the high-speed grinder, grinding machine noise bearing noise is the main ingredient should be used in low-noise rolling bearings.
