Hydraulic torque wrenches classification and distinction

Hydraulic torque wrench into the drive hydraulic torque wrench and hollow hydraulic torque wrenches. Drive hydraulic torque wrenches are driven by the drive shaft to achieve the appropriate size sleeve nut preload, under circumstances permitted as long as the torque range, according to replace the corresponding sleeve high strength bolts to complete different specifications for general purpose hydraulic wrench , wider scope. Hollow hydraulic torque wrench is equipped with a transition sleeve used only within the scope of its comparative bolt specifications required to use this hydraulic torque wrench to achieve the conditions, which is hollow hydraulic torque wrench has become a special customized hydraulic torque wrenches because it uses conditions, generally more screw sticking out of a long, relatively small spatial extent, double nut, bolt spacing is too small, nut and equipment wall is too small, or some specific sectors of the difficult working conditions.