LINEAR MOVEMENT GUIDE BEARING DEVICE

摘要

PROBLEM TO BE SOLVED: To securely and easily realize the improvement of the operability and the reduction of the noise at a low cost without receiving the influence to a difference to be generated between the fine movement quantity dx1 of a steel ball from a load side to a non-load side and the fine movement quantity of the steel ball to be finely moved from the non-load side to the load side in response to the fine movement quantity dx1. SOLUTION: This direct driven type guide bearing device is provided with a guide rail 1 extended in the axial direction and having rolling body rolling grooves 3 extended in the axial direction in both sides thereof, and a slider 2 having a rolling body rolling groove opposite to the rolling body rolling grooves of the guide rail 1 and supported by the guide rail 1 freely to be moved along the axial direction through the rolling movement of multiple rolling bodies inserted in the rolling body rolling grooves and having a rolling body endless circulating track for endlessly circulating the rolling body and provided with a holding piece interposed between each rolling body adjacent to each other in the circulating direction. A rigidity value of the holding piece is set at 0.053 N/μm or more and at 0.175 N/μm or less.