Machines and systems consisting of such machines for the beverage, foodstuff, and plastics processing industries, namely, beverage processing machines, food processing machines, plastic processing machines; machines for the processing of disposable kegs, reusable kegs, or beverage cans, in particular for the filling and cleaning of disposable kegs, reusable kegs, or beverage cans; transport conveying apparatus for kegs and beverage cans, namely, belt conveyors, chain conveyors, and roller con...