| 摘要 |
PROBLEM TO BE SOLVED: To provide a ball screw device capable of improving operability and durability. SOLUTION: This ball screw device 1 has a screw shaft and a nut 2. A nut side seal member fitting part 4 fitted with a seal member 8 is arranged on both end surfaces of the nut 2. The nut side seal member fitting part 4 is composed of a bottom surface 4a turning to the outside of the nut 2 in the axial direction of the nut 2 and an inner peripheral surface 4b adjacent to a bottom surface 4a. The seal member 8 is composed of an end surface 8b opposed to the bottom surface 4a and an outer peripheral surface 8c opposed to the inner peripheral surface 4b. The bottom surface 4a and the inner peripheral surface 4b have mutually squareness, and the end surface 8b and the outer peripheral surface 8c have mutually squareness. COPYRIGHT: (C)2007,JPO&INPIT
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