Installation of ball screw is usually the following

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   (1) double push a free way to screw with one end fixed, one end free. The fixed end bearings under axial and radial forces. This support method is used trip short screw --- advantages: easier assembly, geometric accuracy is l ess affected for short screw and vertical screw; Disadvantages: the distance between the point of smaller, less rigid.
   (2) double push a supported way to screw one end fixed, the other end of the bearing. The fixed end bearing axial force and radial force; support side bearing only the radial force, but also for a small amount of axial float, to avoid or reduce screw bending due to weight. Screw hot deformation are free to the end of the elongation.angular ball bearing
    (3) double push a pair of push way screw both ends fixed. Fixed end bearings can withstand axial and radial forces, supporting this way can be applied to the screw pre-tension, increase the stiffness of the screw bearing, can partially compensate for thermal deformation of the screw. Its advantages are: the distance bet ween the point of higher rigidity; Disadvantages: more vulnerable to the influence of the geometric accuracy of the component parts.contact ball bearing
    (4) screw fixed nut rotation of the drive way at this time, the nut side of the rotation, one edge of the fixed screw for axial movement: As the screw is fixed, you can avoid the critical speed limit to avoid the high-speed operation of the elongated ball screw occurs when all the problems. Nut inertia is small, flexible movement, to achieve high speed. In this way can be applied to the screw with a large pre-tension, screw support stiffness, heat distortion compensation screw.cross bearing