cycloid toothing The epicycloid is obtained by rolling a pitch circle on a pitched line of engagement. It can be clearly seen how the addendum flank of the tooth of gear wheel 1 rolls off the dedendum flank of the tooth of gear wheel 2. description ordernumber 369 see also: single-cylinder air compressor hydraulics: directional control valves with six different pistons quality of finish after turning process quick clamping device, horizontal