A nut while eliminating the single planetary roller mechanism in the axial gap on both sides

The present invention discloses an apparatus mechanical rotary motion and linear motion into each other, while eliminating particularly relates to a planetary roller screw nut mechanism single axial sides of the gap. The roller means in the longitudinal end portion of the hollow roller 8 and rollers 7 shrink disk assembly consisting of the radial rollers 7 and the major axis of the hollow pressing roller 8, and the major axis of the hollow roller the rollers 7 8 the screw thread 14 respectively threaded clamping screw and a nut 2, so as to solve the problems at the same time eliminate the axial clearance on both sides of the planetary roller screw mechanism, the method does not change the center distance, and carrying capacity to change, and easy to roll column installation. This method may also be adjusted by the axial end of the axial gap shrink disc, in order to work after prolonged wear threaded axial gap adjustment again. Idling solve problems due to slippage caused by an axial gap, effectively improve the transmission accuracy and reduce the impact of threaded engagement to ensure the carrying capacity and improve the overall transmission efficiency.