As one might know, using manual torque wrenches to complete bolting jobs is tedious, inaccurate, time consuming, and unsafe. Hence, major industries like power, heavy manufacturers, oil and gas, and infrastructure use hydraulic, battery or pneumatic torque wrenches to achieve precision bolting. In this article, we will talk about some manual bolting methods practiced and draw a comparison between hydraulic, battery/ electrical pneumatic torque wrenches.
The most common reasons for heavy industrial applications to use battery, pneumatic or hydraulic tools is because of the high torque requirement to open old, corroded and rusty fasteners which is labour intensive and time consuming if done manually. Another reason to opt for these torque tools is that there is no operator fatigue involved.
We all know manual torquing is unsafe and can cause injuries to the operator during the job. For example,we have seen technicians use breaker bars with extended length pipes attached to loosen or torque challenging fasteners. At such times, to avoid operator injuries, stripping threads or breaking bolt heads, we recommend using torque tools to achieve controlled bolting.For high torque requirement, we recommend using pneumatic or hydraulic tools. For convenience and portability, battery torque wrenches are ideal tools.
Hydraulic &Pneumatic Torque Wrenches are available in a variety of sizes, torque capabilities and custom applications for applying torque to virtually any type of fastener. As mentioned earlier, these tools serve a wide range of torque requirements and challenge complex bolting jobs. Before we start differentiating the power tools, hydraulic tools are powered by pumps while pneumatic torque wrenches are powered by FRL units and electric torque wrenches are cordlessly powered by a battery.
Some of the key differences between the hydraulic, battery and pneumatic torque wrenches are as follows
Comparing all the power tools pneumatic torque wrenches are the fastest because they provide the operator to opt for dual speed. The battery-operated torque wrenches have similar speed to the single speed pneumatic tool.Hydraulic tools are the slowest among the three.
For high torque requirements, hydraulic tools beat pneumatic and battery hands down. For example, a TORCpneumatic torque wrench can offer torque output up to 5220 ft-lbs while TORC battery can offer only up to 700 ft-lbs. A TORC hydraulic torque wrench can offer up to 37,095 ft-lbs making it almost 7 times more powerful than pneumatic and 52 times more powerful than a battery torque wrench.
Hydraulic tools are usually lighter compared to a pneumatic torque wrench but on adding the weight of the hydraulic pump, pneumatic tools are lighter. Among the three, battery torque wrenches are the most convenient, portable and lightweight.
All three tools are the most accurate tools in the industry with mere differences. While battery and pneumatic torque wrench offer +/- 5% repeatability, hydraulic tools offer +/- 3% repeatability.
Battery tools are cordless and the easiest to operate among the three as they are cordlessly powered. Pneumatic and hydraulic tools are equally friendly to use even considering that the operator uses an FRL unit or pump to power the tools.
Understanding all the mentioned points above, it is also important to ensure that all these tools should be calibrated. All TORC tools come with a calibration certificate. However, these tools need to be calibrated regularly based on the usage of the tool.
We hope this article has helped you understand the key differences between different power torque wrenches.A torque wrench is chosen based on the application details and the industry. Key pointer to take away is that unlike manual torque wrenches power torque wrenches offer controlled bolting and ensure safety. Visit us next time for more knowledge sharing articles.