Draft Document – Food processing machinery – Bore of cylinder head for mincers – System Unger
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2015

Draft Document – Food processing machinery – Bores of cylinder head of mincers – System Unger with bush, sizes R70 to X400
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2005