Analysis of rolling bearings in the machine

Web Design And Seo For www.china-webdesign.com

thrust roller bearings - China Manufacturer

Thank you for inquiry my thrust roller bearings, Tel : 0086-0379-64390888, E-mail: liuping@lyzyc.cc

http://www.lyzycbearing.com/key-thrust-roller-bearings-14/

The use of rolling bearings in machine tools is mainly used for the following three parts: spindle, ball screws, and generally drive shaft.angular contact ball bearings
Spindle bearings as the basis of component parts of the machine, its performance directly affects the speed of the machine, turning precision, rigidity, anti-chatter vibration cutting performance, noise, temperature and thermal deformation, thereby affecting the accuracy of the machined part surface quality. Therefore, high-performance machine must be equipped with high-performance bearings.

Rolling bearing accuracy is generally divided into P0, P6, P5, P4 and P2 five grades for the accuracy of precision machine tool spindle bearing for P5 and above level, for CNC machine tools, machining centers and other high-speed, high precision machine tools The spindle bearing, you need to make use of the P4 and above level of super-precision bearings.

Machine tool spindle bearings typically include deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings, tapered roller bearings and thrust bearings, and other six structural types.double row bearing

With the rapid development of numerical control technology, complex, high-speed, intelligent, sophisticated, green "has become the main trend of the Machine Tool Industry and Technology Development. Among them, high-speed processing can effectively improve the machining efficiency, shorten the processing cycle of the workpiece. This requires the machine spindle and its associated components to adapt to the needs of high-speed processing. At present, the CNC machine tool spindle bearings are basically limited in angular contact ball bearings, cylindrical roller bearings, two-way thrust angular contact ball bearings and tapered roller bearings and other four structure types.ball screw bearing

Accompanied by the devel opment of numerical control machine tool spindle to the high-speed, ceramic materials (Si3N4 engineering ceramic) has low density, high elastic modulus, thermal expansion coefficient, resistant, high temperature, corrosion resistance and other excellent performance, thus becoming the manufacture of high-speed an ideal material for precision bearings. Ceramic bearings are more widely used, in view of the ceramic materials difficult to machine precision ceramic bearings and more for rolling element is a ceramic inner and outer rings are still chrome steel manufactured hybrid ceramic ball bearings.

Ball screw as a sophisticated, efficient and sensitive drive components, should be high-precision lead screw nut and ball should also be noted that selection of the axial stiffness, high friction torque operation with high precision bearings. The ball screw supporting the commonly used two-way thrust angular contact ball bearings, tapered roller bearings, needle roller and thrust roller combination bearings, deep groove ball bearings and thrust ball bearings, etc.. At present, the ball screw support using the most angular contact ball bearings, single row thrust contact angle of 60 °, accuracy class machine tools installed in general Rolling on the drive shaft, its requirements and selection of bearings with ordinary mechanical drive just to meet the strength and life requirements, speed does not exceed the specified bearing limiting speed can be.

Under normal circumstances, we mentioned in the machine tool bearings spindle bearings and ball screw bearings, precision machine tool bearings, precision is more than P5 and its P5-class spindle bearings and screw bearings.