The machine body of the KERN Evo and KERN Micro ranges is specially designed to take full advantage of the characteristics offered by the high tech material polymer concrete.

Maximum rigidity – static and dynamic
Cross-sections with exceptionally big dimensions are used on the KERN machines, thanks to the 1.8 tonnes polymer concrete con-struction on a 2.5 m² footprint. The static and dynamic rigidity inherent in our polymer concrete machine frame is much higher than the limits of a cast iron structure.
O.3 µm/N   Double amplitude
 
      Cast Iron                                            KERN Polymer Concrete

Vibration absorption 10 times better
The vibration dampening characteristics of the monobloc frame are of paramount importance to balance the high dynamic forces exerted by our digital direct feed drives. Polymer concrete mono-bloc absorbs up to 10 times more vibrations than cast iron, result-ing in longer tool life of up to 30 % and superior surface quality
with Ra < 0.1 µm.


      Cast Iron                                           KERN Polymer Concrete

Low sensitivity to temperature fluctuations
The polymer concrete monobloc frame of KERN machines is known to have a 50 % lower heat conductibility than that of a steel or cast iron design. Polymer concrete does not react to short temperature fluctuations. The very low thermal conductivity mini-mises any deformation due to temperature variations. This in turn increases the workpiece accuracy.