An IKO high rigidity precision ball slide is a compact linear motion rolling guide for limited stroke length. The unit incorporates two rows of steel balls in four-point contact with the raceways so that stable accuracy and high rigidity are obtained, even under fluctuating and complex loads. Wide variations in size are available for selections suitable for each application. Two raceways on the solid table and on the solid bed, respectively, are ground one at a time to minimize processing errors and improve accuracy between the two raceways. High accuracy and smooth movement are assured with these linear slide units.