... machine such as adjustable level module in jet-grouting lifting and anchored drilling, it may bring more convenient ... rotational speed (r/min)0-6, 0-20 (without adjustable level) 6,20,40,50,120,150Unit head lifting force ... (kN)21Unit head plus-pressure (kN)15Lifting speed (m/min)0-1. ... 1(without adjustable level)Plus-pressure speed (m/min)1.5,9Unit head travel (mm ...