| 摘要 |
<p>Provided is a ball screw device with which damage to rotating parts is reduced even during high-speed operation. The rotating parts (40) are equipped with a pair of leg parts (41, 41) having a tongue part (44) that scoops up the balls (30) in a direction that is approximately aligned with the tangential direction of the spiral orbit, and with a main body (42) connecting the pair of leg parts (41, 41). The centrode radius Rb of the balls (30), the inner radius Rn of the nut (20), and the inner radius Rt on the opposite side of the tongue part (44) satisfy the equation Rb = Rt = Rn.</p> |
