Electric torque wrenches are popular in industries such as automotive repair, construction, manufacturing, aerospace, steel structure erection, and more. It is one of the important bolt tightening tools in these fields. Therefore, how to choose the right type of electric torque wrench becomes very important.

In this article, TorcStark will provide detailed information about plug-in electric torque wrenches and battery-electric torque wrenches, hoping to help you choose the right type of wrench more easily.

Advantages and disadvantages of plug-in electric torque wrenches

Advantages

High precision (±2%), low failure rate, long life, programmable, can control torque and angle and can choose a variety of torque. Mature technology, stable performance, user-friendly operation interface, strong data processing function, low power consumption, low noise, flexible adjustment, automatic shutdown, stable torque, etc.

Disadvantages

Multiple system components and complex operations

When using the wrench system, it is necessary to start the computer at the same time, number the bolt information, record the information into the management software, make an electronic label, and paste it on the corresponding bolt. The function of the torque wrench can only be brought into play after the preparatory work is completed, the use efficiency is relatively low, and the operation is relatively complicated.

Accuracy and Price Conflict

At present, there is a dilemma between precision and price conflicts in electric torque wrenches. The wrench with higher precision is usually a digital constant torque electric wrench, and the price is generally higher. Most of the lower-priced ones are pointer-type torque wrenches with simple structures, which have low precision and are difficult to meet the requirements of use.

Low level of intelligence

The existing constant torque electric wrenches all have the function of applying and monitoring the torque value, but how much torque value to apply to the bolts with different specifications still needs to be manually set. For the tightening torque value of different bolts, you need to consult the relevant manual or use the formula to calculate. The specific value of the pre-tightening force of many commonly used ordinary bolts needs to be determined by experience.

Not suitable for outdoor conditions

Many outdoor working conditions do not have a power source, so it is impossible to use an electric torque wrench for work.

Example

TorcStark’s ETW series plug-in electric torque wrench is a typical electric torque wrench. It has high precision, a wide applicable torque range (100Nm-12000Nm), simple operation and can sustain high-intensity work. The bendable wrench body and customized reaction arm can adapt to more complex working environments.

Advantages and Disadvantages of Battery Electric Torque Wrenches

Advantages

1. High reliability: The battery-powered torque wrench has high precision and can precisely control the torque value to ensure the tightness of the connection between the bolt and the nut, which greatly improves product quality.

2. Simple operation: The battery-powered torque wrench can set the torque value, which simplifies operation, reduces operation steps, and improves work efficiency.

3. Safe and reliable: The battery-powered torque wrench has a safety lock to prevent accidental operation, and can detect whether the bolts are fully tightened to avoid danger caused by loose bolts.

4. Easy to operate: The battery-powered torque wrench operates wirelessly and is not subject to environmental restrictions. It can be used in any environment, which greatly improves the convenience of operation.

5. High efficiency: The battery-powered torque wrench has a built-in digital display, which can monitor the torque value in real-time to ensure the accuracy of the torque and improve work efficiency.

Disadvantages

1. Expensive: Due to their advanced technology and high precision, battery-powered torque wrenches are more expensive than ordinary torque wrenches.

2. High maintenance cost: The maintenance cost of a battery-powered torque wrench is more expensive than an ordinary torque wrench because of its complex electronic components and technical requirements.

3. Specifications for use: Since the parameter settings of the battery-powered torque wrench are complex and require real-time monitoring, users must have a certain technical foundation to ensure correct use.

4. Environmental requirements: Since the battery-powered torque wrench has high precision requirements, the use environment must meet certain requirements so as not to affect its use effect.

5. Replace the battery: The battery life of the battery-powered torque wrench is short, so the user must replace the battery regularly to ensure the normal use of the battery-powered torque wrench.

Example

TorcStark’s BTW series battery torque wrench uses a power brushless motor equipped with 2 large-capacity ternary lithium batteries to achieve sustained and stable torque output. The torque range of 100Nm-8000Nm is suitable for most bolt tightening.

Plug-in vs. battery-powered electric torque wrenches compared

Performance

The plug-in electric torque wrench has a torque range of 100Nm-12000Nm and can continue to work for a long time. When there is a stable power supply, it can continuously and stably output torque.

The torque range of the battery torque wrench is 100Nm-8000Nm. Each battery can power the wrench to tighten 300 bolts.

Portability

Plug-in electric torque wrenches are less portable and cannot work in places without stable power supply, such as steel structure installation, wind turbine installation, etc.

Battery torque wrenches offer great mobility. It is suitable for working environments without stable power supply such as outdoors.

Purchase cost

battery torque wrench

500Nm$3100
1200Nm$4700
2200Nm$4900
3100Nm$5300
6000Nm$9400

Plug-in electric torque wrench

2800Nm$2400
6000Nm$3000
8000Nm$3500
10000Nm$5300
12000Nm$5300

Generally speaking, at the same torque level, battery torque wrenches are much more expensive than plug-in torque wrenches because of the battery.

How to choose an electric torque wrench that’s right for you

Therefore, taking into account the characteristics of the above different types of electric torque wrenches, the analysis can be carried out according to the following situations.

Determine the torque demand range and working time according to the work requirements. For large torque bolts and long-term work requirements, you should choose a plug-in torque wrench. On the contrary, choose a battery torque wrench.

Based on usage scenarios and mobile portability. In outdoor working environments such as steel structure installation and wind turbine installation, battery torque wrenches are a good choice. It is very portable and can greatly improve work efficiency.

Based on factors such as purchase cost and performance. Battery torque wrenches are expensive and have relatively low maximum torque output. The opposite is true for plug-in torque wrenches.

Finally, choose the right electric torque wrench for your specific work environment. If you have any other questions, please feel free to contact us.