English to Serbian Tech/Engineering Mechanics / Mech Engineering Montaža pozicionera na rotacioni aktuator

Nejasan izraz u sljedećem kontekstu:

On internal valve pressure the thrust shaft is pushed out to the mechanical stops, usually a thrust bearing. On valves where the valve position take-off is mounted directly on the end of the plug shaft, a Camflex for example, the shaft must be bearing on its stop to properly set up the SVI II AP Controller. During hydrostatic testing the shaft is thrust to its stop and a normally tightened packing retains it in that position.