| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal for a ball screw device which can prevent damage of a seal member and a leak of grease.SOLUTION: An outer peripheral edge of a seal member 40 provided in a nut 20 of a ball screw device 1 is provided with a rolling groove 11 of a screw shaft 10, or a portion corresponding to an inner peripheral edge slidingly contacting with a land part 12 between rolling grooves 11, 11 is provided with a guide part 50 protruding or recessed in an axial direction of the screw shaft 10. |
