... electro-hydraulic servo compression testing machine UTM, pressure testing machine" construction such as the railroad, road, bridge, port, high-rise ... .6. StrucureThis machine consists of two parts, mainframe and control cabinet.6.1 Mainframe is composed by upper beam, lower ... Both are grinded to a certain fit clearance.6.2 control cabinet, oil pump, high precision electro-hydraulic digital servo ...