A cylindrical device, containing three or more oblong ball circuits complete with a retainer to guide the balls in their proper path, specifically designed for use on sliding linear motion shafts to minimize friction and wear.
instrument series style designator, 0.6240 inches minimum and 0.6400 inches maximum distance between retaining rings, 0.8600 inches minimum and 0.8750 inches maximum overall length, 0.6246 inches minimum and 0.6250 inches maximum overall outside diameter