Machine tool ball screw ball bearings

Machine tool ball screw ball screw linear movement is used to pass a ball bearing, high precision, high axial rigidity, low torque and long life of the marked characteristics, widely used in precision machinery and equipment, is a CNC machine tool precision measuring tools indispensable accessories. The precision of ball screw ball bearing and install rigid ball screw is high precision high axial rigidity of important factor. Ball screw adopt bearing structure is usually at home and abroad for high precision angular contact ball bearings, the bearing is very strict, P4 class above requirements to ISO international standards, to improve the axial bearing capacity of bearing, usually takes 60 ° large contact Angle of the bearing. To achieve great axial rigidity, the most common of which are used in a group installations. With the enlargement of the CNC machine tool production scale and increased social ownership nc machine tool, the social demand of ball screw has said. Forecast according to the machine tool industry development, the demand of ball screw in 1995 to 120000, 2000 in 160000, is expected to 2005 in 200000, each pair of form a complete set of ball screw average calculated on 4 sets of precision bearing, 2005 domestic with precision ball screw bearing demand for 800000, according to 20% of the ball bearing, ball bearing years demand for 160000 sets. Therefore, motorized spindle CNC machine tool spindle, grinding machine and other metal processing machine tool spindle and ball screw precision bearing and ball bearing 1. 47 million sets, among them, the ball bearing 42. 50000 sets. ( Return] A: the mixed ball bearing basic introduction to the next: ball bearings at home and abroad market