The KUGLER cylindrical aerostatic bearing is a specially developed cylindrical bearing for measuring torque or for use as a calibration device for national / international standards (PTB). In contrast to standard aerostatic bearings, the essential difference consists in its extremely low internal static friction.
This is already very low for aerostatic bearings in general, but nevertheless is always detectable.
Torque measuring devices require bearings for which this residual frictional torque becomes negligibly low, so that no distortion occurs when the desired torque is measured.
Since no strain whatsoever may be present in the components, the bearing, which is designed as a so-called radial bearing, consists of a rotor and a stator.
In order to safeguard the rotor from slipping out of the bearing, this has an axial disc at each end which secures the rotor with a clearance of approx. 2 mm.
In this manner, the rotor positions can also be adjusted individually at the measuring assembly of the calibration device, without the necessity of accounting for yet another narrow axial tolerance in addition to the radial alignment of the measuring shaft.
The difference in comparison with type ZL-210 is above all its smaller construction for situations in which less installation space is available and a reduced radial rigidity is sufficient.