single box package with plastic bag inside ,paper box outside ,then put into the carton
>Linear ball bearing is consisted of an outer race, retainer, balls and end rings.
>The retainer is incorporated inside the outer race, and has three or more rows of elliptical ball tracks that allow unlimited ball circulation and the balls circulate very smoothly in those ball tracks.
>The retainer is held by two end rings at both ends of the outer race. One side of the paralleled straight portions of the elliptical ball track is cut off open, and the balls there are in contact with the shaft surface to circulate to and for unlimitedly in the ball track according to the rectilinear reciprocation of the shaft.
>Thus the retainer forms rolling tracks, and at the same time keeps the balls from falling out when the bearing is removed from the shaft.