The dry compressing SCROLLVAC SC-D pumps operate on the principle of a scroll compressor. Two or more Archimedes spirals engaging each other. The vacuum is generated by reducing the volume of the pockets and compressing gases from the outside towards the inside thereby pumping the gases. SCROLLVAC pumps operate absolutely oil-free with a high effective pumping speed in the whole range of operation.
Effective as of September 1, 2016, Atlas Copco AB (Stockholm, Sweden) owns the former Oerlikon Leybold Vacuum, renamed to Leybold.