Torque wrenches play an important role in heavy-duty bolting applications like power plants, construction industry, automotive industry, steel mills, etc… that requires increased safety. Technicians and mechanics use torque wrenches to tighten nuts and bolts to a predetermined torque value. Manually tightening the nuts and bolts will not provide the exact tightening value but, with torque wrenches it is possible. This tool is necessary because it is risky if your equipment or system has too tight or too loose connections. Applying too much pressure for tightening the nuts or bolts will make the parts bend or break. Similarly, loosened nuts and bolts will result in spontaneous unscrew of these connected parts after a few hours of operation.
Torque wrenches are available in different shape and sizes. Based on the operation and working, torque wrenches are classified into hydraulic torque wrench, electric torque wrench, pneumatic torque wrench, battery torque wrench, beam wrench, etc…. The hydraulic torque wrench is powered by pressurized oil, the pneumatic torque wrench is powered by compressed air, and the electric torque wrench is connected directly to the power source. Similarly, battery torque wrench comes with a battery placed on the bottom of the tool. Among these, the hydraulic torque wrench is commonly used and popular. All major facts on this hydraulic torque wrenches are included here.
Advantages of Hydraulic Torque Wrenches
Hydraulic torque wrenches are an unavoidable tool in today’s industrial applications. This tool ensures that the machine components and parts are bolted together perfectly and are secure. Compared with other torque wrenches, hydraulic torque wrenches has many benefits and those are mentioned below in points.
- Hydraulic torque wrenches are ideal for heavy-duty applications like flange bolting.
- Hydraulics help to tighten nuts and bolts by applying minimum force.
- This hydraulic tool offer a high level of accuracy.
- Hydraulic torque wrenches are self-ratcheting
- After achieving desired torque, this tool will stop applying additional torque
- Consume money by preventing damage due to inappropriate bolting
- Reduce the time required for tightening nuts.
- Improves the perfection of joints
Hydraulic Torque Wrench Working
Pressurized fluid in the hydraulic torque wrench allows you to tighten the nuts and bolts of your machine by applying a small force. The hydraulic torque wrench consists of a working head, high-pressure oil tube, high-strength sleeve and electric hydraulic pump. The working head is the most important part of torque wrench that is connected to the nuts/bolts. The working head contains three parts like the body, the cylinder and the transmission parts. The electric hydraulic pump acts as an external power source that pressurizes the fluid and transfers this fluid through tubing medium to push the piston rod of the hydraulic wrench. The movement of this piston rod and the attached transmission components together will provide the required torque for tightening.
How to Use Hydraulic Torque Wrenches?
There are 4 steps involved in using a hydraulic torque wrench. Those are mentioned below in points.
Assemble Hydraulic Torque Wrench Components: Hydraulic torque wrench will arrive dismantled and prior to using, the technician/mechanic needs to assemble them properly. One end of the hose needs to be connected to the power pack and the other end to the torque wrench. For preventing any failures, a solid connection needs to be established by tightening the fittings.
Adjusting the Torque Settings: The required torque level for the fittings will vary depending on the application. The hydraulic torque wrench allows the users to predefine their torque value and this tool will stop applying force once this value is reached. If your work doesn’t have a predefined torque value, it is advised to test it from minimum value onwards.
Using the Hydraulic Torque Wrench: The working head of the torque wrench will contain a large hole in the shape of nut/bolt. The user needs to perfectly attach the torque wrench to the nut. After this, the torque wrench can be turned to tighten nuts or bolts.