... of spike nut in railway. NLB-600 Internal-Combustion Bolt Wrench Application:It is a special tool for the fastening and ... open working environment.2.Mechanical transfer, hydraulic control, stable output torque.3.Equipped with all models of sockets, suiting various specs ... / 3600 rpm.2. Output shaft speed:157 rpm.3. Output torque:(infinitely variable control) 20—450 N·m,(instantaneous)600 N ...