Patent ID: 7758245

Claim:
A rolling guide unit which is adapted to a linear motion guide system having a guide rail having a lengthwise raceway groove there on and a slider having a raceway groove in opposition to the raceway groove on the guide rail, the slider being allowed to move relatively to the guide rail in a sliding manner, and comprises a plurality of rolling elements rolling through a circulating circuit including a load-carrying race between the guide rail and the slider and a separator, disposed between every two adjacent rolling elements to separate the adjacent and being elastically deformable to regulate an interval between the adjacent rolling elements; wherein the separator comprises a right circular cylindrical shell to define an outside cylindrical contour of the separator and a plurality of tapered fingers elastically deformable independently of one another and extending from the cylindrical shell towards a center of the cylindrical shell so that free distal ends of the fingers make elastic contact with a respective rolling element; wherein the right circular cylindrical shell has a first end and a second end axially opposite to one another, each of which has a spherical depression to fit over any one of the rolling elements in conformity with the fingers; wherein the fingers include a first set of fingers extending from the first end of the cylinder and a second set of fingers extending from the second end; wherein the first set of fingers and the second set of fingers are arranged alternatively in a circular direction and staggered from one another in an axial direction to form a slit separating the fingers from one another in circumferential and axial directions; wherein each set of fingers comprises three fingers; and wherein the first end and the second end of the cylindrical shell make contact around their entire respective spherical depression with their associated rolling element when the fingers are axially deformed by the rolling element.