Abstract: The linear movement bearing has an inner race and an outer race. The outer race has a plurality of circumferentially-separated axially centered lands on its inside periphery.An annular retainer is provided in the space between the inner race and the outer race. The retainer has a plurality of circumferentially-separated pockets. A separator is centrally located within each of the pockets to form axially-extending pairs of first and second guideways and reversing guideways at the axial ends of and interconnecting each pair of first and second guideways to form continuous closed paths. Rolling members fill each continuous closed path.All rolling members always contact the inner race. The lengths of the outer race lands and the circumferential separation of the lands are such that the rolling members in the first guideways contact the lands while the rolling members in the second guideways and reversing guideways do not contact the outer race.