E etselitsoe khatello ka mahlakoreng ka bobeli a piston, selikalikoe se thellang se na le li-grooves tse tataisang ka mahlakoreng ka bobeli ho amohela liphetoho tse potlakileng tsa khatello.
Botsitso bo phahameng haholo ba khatello tlas'a khatello e phahameng le maemo a thata
Molemo o motle oa mocheso oa mocheso
E na le khanyetso e ntle haholo ea extrusion
Khanyetso e phahameng ea ho apara
Khohlano e tlase, ha ho na hydraulic crawling phenomenon