Roller guide for high load applications with the highest demands with respect to load ratings and torques. The HIWIN linear guideways of the RG series use rollers rather than balls as rolling elements. The linear contact surface dramatically reduces deformation caused by loading, thereby achieving extremely high rigidity and load capacity in all 4 load directions. The models of the QR series with SynchMotion™ technology offer all the advantages of the standard RG series. Controlled movement of the rollers at a defined distance also results in improved synchronous performance, higher reliable travel speeds, extended lubrication intervals and less running noise.