Application example

Laser optics on aircraft

Requirements

Roller bearings with high rigidity and highest accuracy are required for use in aircraft protection. The bearings must be able to compensate for thermal expansion.


Solution

Slewing ring LDB80/295 as cylindrical roller bearing made of aluminium with a diameter of 295 mm. A further bearing assembly in the form of a three-point bearing is also used.


Bearing solution used


Advantages

The LDZ bearing assembly has a radial and axial runout of 0.03 mm. A weight saving is achieved by the light aluminium construction. The load ratings, rigidity and accuracy of the bearing are determined by the raceways. The second bearing has a load angle of 45° (three-point bearing). The outer ring is movable in order to optimally compensate for the thermal expansions that occur.