Roller guidance system ELFS-F series

high-precisionsteelaluminum

ELFS support rails are composite construction: ▪ An high-precision aluminum base element accommodates hardened and polished precision steel shafts that are used as tracks for track rollers. ▪ The special rolling-in process ensures the extremely robust bond of the steel shafts to the aluminum base element. Accuracy of ELFS support rails The parallelity values specified are determined using differential measurement. The straightness values of the finely aligned support rails are better than DIN EN 12020 Installation ▪ Lightly tighten screws ▪ Align support rails ▪ Tighten screws with tightening torque For high loads, use washers that meet DIN 433 requirements. If installed with no side stop, comply with permissible side loads. Lubrication The track of the guide should be lubricated to avoid damage by tribocorrosion. The required intervals between lubrication depends on the type of application and environmental conditions. Reddish discoloration on the track or on the outer ring of the rollers is a sign of tribocorrosion and a lack of lubrication. Special conditions for use Under certain conditions of use, such as vibrations, alternating loads under high acceleration in combination with too soft connection structures, or incompletely supported support rails, the rolled-in steel shafts may drift by several millimeters in the aluminum base element. Where necessary, a positive self- locking axial support is recommended.