This article we will introduce the application and composition of hydraulic wrench. Hydraulic torque wrench, referred to as hydraulic wrench, is powered by hydraulic pressure and provides large torque output. It is a professional tool for bolt installation and disassembly. It is often used to tighten and loosen bolts larger than one inch. The maximum output torque of AIPI hydraulic torque wrench can reach 47245Nm, which not only improves the work efficiency, reduces the labor intensity, but also greatly improves the installation quality, which is conducive to the on-site safety management.
Hydraulic wrench is widely used in shipbuilding, petrochemical, construction, power, mining, metallurgy and other industries in the construction, repair and emergency repair work. According to statistics, 60% of the equipment operation failures are caused by bolt problems, and the number of major equipment accidents caused by bolt problems is also very alarming. Therefore, in the process of equipment installation, maintenance and emergency repair, the tightening and dismantling torque of bolts are strictly required in most cases, and the manual method can meet the requirements. Hydraulic wrench is a very important tool for the installation and disassembly of large-size bolts. It is not only easy to use, but also provides accurate and huge torque. The torque repetition accuracy reaches about 3%, which is irreplaceable by other tools.
Composition of Hydraulic Wrench

Composition of Hydraulic Wrench

Hydraulic Torque Wrench,  TWHD Series, Low Profile Hexagon Hydraulic Torque Wrench Maximum Torque: 28370 Ft.lbs Hexagon Range: 3/4 – 6 1/8 inch Nose Radius: 1.17-4.64 inch Maximum Operating Pressure: 10,000 psi Principle of Torque Wrenches Selecting： Please refer to the bolt torque recommendation form. See ” How […]

Hydraulic torque wrench is composed of working head, hydraulic pump and high pressure oil pipe. Through the high-pressure oil pipe, the hydraulic pump transmits the power to the working head and drives the tightening or loosening of the rotating nut of the working head. The hydraulic pump can be driven by electric power or compressed air.
The work of hydraulic wrench is mainly composed of three parts, the frame is also called shell, oil cylinder and transmission parts. The oil cylinder output force, the oil cylinder piston rod and the transmission part constitute the motion pair. The distance from the center of the oil cylinder to the center of the transmission part is the amplification arm of the hydraulic wrench. The cylinder output multiplied by the force arm is the theoretical output torque of the hydraulic wrench. Due to the existence of friction resistance, the actual output torque of the hydraulic wrench is less than the theoretical output torque.
There are two series of hydraulic spanners: driving type and hollow type. The driving type hydraulic torque wrench is used with standard sleeve. It is a general-purpose hydraulic wrench with wide application range. Hollow type hydraulic torque wrench is thin, especially suitable for small space, suitable for electric power (nuclear power, wind power, hydropower, thermal power), shipbuilding, metallurgy, transportation, construction, aviation and other fields.
Because hydraulic wrench is often used in narrow space and inconvenient transportation during construction, its volume and weight are important indexes. AIPI hydraulic wrench adopts aviation aluminum titanium alloy material and heat treatment method to reduce the size and weight of components.