The used aluminium profiles are extruded profiles which, due to the manufacturing process, showed deviations in
terms of straightness and torsion. The tolerance of this deviation is defined in DIN EN 12020-2. linear unit are face
milled and therefore these deviations are usually undercut. In order to achieve the desired guiding accuracy and
running behaviour, however, it is necessary to clamp the axis system on a correspondingly precise bearing surface
or to align it using levelling plates. This allows tolerances of a minimum of 0.1mm / 1000mm to be achieved.
Foot mounting
Fig. 17 - linear unit LES 4, 5, 6 for foot mounting
If mounting the linear unit from below is not possible or too complex, it is also possible to mount the linear unit
from above using special mounting strips or appropriate adapter plates. For this purpose, the respective adapters
must be fastened to the linear guide rail again using sliding nuts or threaded rails and the unit must then be
mounted completely from above.
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