The models of the SLF series with SynchMotion™ technology offer all the advantages of the standard series LT. 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 SLF blocks are identical to those of the LTF blocks, they are also fitted on the LTR standard rail and can therefore be interchanged with ease.