The models of the QEH series with SynchMotion™ technology offer all the advantages of the standard series EG. Controlled movement of the balls at a defined distance also results in improved synchronous performance, higher reliable travel speeds, extended lubrication intervals and less running noise. Since the installation dimensions of the QEH blocks are identical to those of the EGH blocks, they are also fitted on the EGR standard rail and can therefore be interchanged with ease.