The advantages of the application of the Cross Roller Bearing in the numerical control vertical lathe. The application of cross roller in vertical CNC lathe spindle has gradually been recognized, the cross-sectional area of the roller with its special arrangement occupy relatively small, thus saving the raw materials in the production process, but also reduces the cost of production; in season time, drive the main shaft to rotate, the consumption of less vertical CNC lathe the working efficiency and accuracy is greatly improved.