| 摘要 |
Six rows of balls arranged between a slider and a ball are provided to a linear ball bearing guideway to improve an overall load capacity. The six rows of balls are symmetrically arranged on both surfaces of a head unit, and three rows of balls among the six rows of balls are positioned at the different heights from each other on each surface. The width of a neck unit of the head unit is smaller than a distance between two rows of balls arranged in a rail rolling groove but larger than a value obtained by subtracting the diameter of the ball from the distance between the two rows of balls of the uppermost rail rolling groove, thereby enabling the width of the neck unit to be significantly small and ensuring to affect strength of the rail. |
