Requirements for machine tool spindle bearings

In the machine tool bearings, bearings is widely used. Spindle bearing with certain technical requirements. Introduce to you the following analysis

1 speed and temperature

With the development of science and technology, more and more high spindle speed, speed range and thus the greater the deep groove ball bearing high speed stability requirements are also increasing. Machine tool spindle bearing temperature is an important factor in limiting speed of the bearing. Under normal circumstances, the right choice bearing type, tolerance levels, configuration, clearance (preload) size, lubricants and lubrication, etc., to a certain extent, improve the speed performance of rolling bearings.

(2) carrying capacity and life

The general machine tool, the life of the main spindle assembly to maintain accuracy of the spindle is its period of use, therefore, required to maintain the accuracy bearing spindle assembly performance to meet life requirements. For heavy-duty machine tools or powerful cutting machine, you should first consider the bearing 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 even flutter. Vibration resistance refers to the forced vibration and self-excited vibration capability. Spindle assembly vibration resistance depends on the spindle and bearing stiffness and damping. Using the preload bearing can effectively increase the stiffness of the spindle system.

4 Noise

In high-speed grinder, the grinding noise and bearing noise is the main ingredient should be used in low-noise rolling bearings.