Bearing on the use of the machine is mainly used for the following three parts: spindle, ball screw shaft and the general.
Machine tool spindle bearings as the basis for component parts, its performance directly affects the speed of the machine, rotary precision, rigidity, DU bushing resistance to cutting chatter vibration, noise, temperature rise and thermal deformation, thereby affecting the machining accuracy of parts, surface quality. Therefore,Mould guide plate the machine must be equipped with high-performance high-performance NSK bearings.
The accuracy of rolling bearings are generally divided into P0, P6, P5, P4 and P2 five levels for precision machine tool spindle bearings precision should be P5 and above level,plasic bushing and for CNC machine tools, machining centers, high-speed,plain bearing high precision machine tools spindle bearing, you need to use P4 level and above, super-precision bearings.
Machine tool spindle bearing usually include deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, angular contact thrust ball bearings,brass bushing tapered roller bearings and thrust bearings of six structure types.
cast bronze With the rapid development of numerical control technology, bronze bushing "complex, high-speed, intelligent, sophisticated,dry bushing environmentally-friendly" has become a major tool of industrial technology development trends. Among them, high-speed processing can improve the machining efficiency, sleeve bushing shorten the machining cycle. This requires the spindle and its associated components to meet the needs of high-speed machining. Currently, the NC machine tool spindle bearings are basically limited to FAG angular contact ball bearings, bushing cylindrical roller bearings, angular contact thrust ball bearings and tapered roller bearings and other types of four structures.