Air Bearing Benefits: Low Thermal Growth

Low friction, constant air flow and efficient power transmission result in minimal thermal growth.

Due to many factors (such as low friction, constant air flow and efficient power transmission) the heating effect in a spindle shaft is small. Additionally, the selection of special materials and construction methods, together with internal liquid cooling channels, can almost completely eliminate thermal growth, so no warm up period is required.

Thermal image of water-cooled PCB drilling spindle running at 200,000 rpm