Dynamometers

When assembling a vehicle, an engine, mechanical equipment and various technical structures, the manufacturer often specifies the force with which a particular fastener should be tightened. Excessive or insufficient tightening can affect the correct operation of the part. At TechnoKing there are digital dynamometers and torque wrenches that allow you to control the torque during the tightening process and maintain the value needed for a specific job more accurately. When choosing the device, the working range, unit of measurement, drive square size, accuracy and exactly what type of job you plan to perform are especially important.

What is a dynamometer?

The term dynamometer generally refers to a device for measuring force or the moment of force. In technical and automotive work, a torque tool is often used to control torque when tightening a bolt and nut. For this, a torque wrench or a suitable digital measuring device is used. Such a tool lets you set or control a specific value in advance and not tighten the fastener by feel alone. This is especially important when working on parts for which a specific tightening value is defined by the manufacturer.

What is a torque wrench?

A torque wrench is a special tool used to tighten nuts and bolts to a defined torque. Unlike an ordinary wrench, the main advantage of a torque wrench is controlled tightening. The user sets the working value in advance or monitors the current figure on the device’s display. This makes it possible to tighten the fastener close to the value required by the manufacturer of the specific part or device. A torque wrench is especially important when working with cars, engines, wheels, the running gear and various mechanical equipment.

What does N.m mean?

In the technical description of torque wrenches and digital torque meters, you will often come across the notation N.m. This is the newton metre, a unit for measuring torque. For example, if the manufacturer specifies a value of 80 N.m for a particular bolt, this value can be controlled with a suitable torque tool. That is exactly why the working range of the tool is important when choosing it. If you mainly work within the 20 to 80 N.m range, the range of the chosen device should cover these values. And if the job requires higher torque, a device with a suitably wider working range is needed.

What is a torque wrench used for?

A torque wrench is used in almost every field where correctly tightening a fastener is important. One of the most common directions is car repair and service. Its use may be needed:

• When fixing car wheels
• When working with engine parts
• When tightening cylinder head bolts
• When installing various running-gear components
• When assembling mechanical equipment
• During technical service of a motorcycle and a bicycle
• When assembling machinery and various structures
• In a professional workshop

For a specific job, you should always use the tightening value defined by the relevant technical documentation.

Torque wrench for a car

When working with a car, a torque wrench is one of the most important precision tools. Many fasteners in a car must be tightened to a specific torque. For example, tightening wheel bolts too weakly is undesirable, but excessive tightening also creates a problem. The same principle applies to many components of the engine and running gear. For a professional auto service, a torque wrench makes it possible to perform the work in accordance with the manufacturer’s technical requirements. Such a tool is also practical for a private user who performs vehicle technical maintenance independently.

Torque wrench for wheels

After changing a car tyre or wheel, correctly tightening the fasteners is essential. A torque wrench for wheels lets you maintain the required torque on each fastener. The required value is not the same for every car. That is why, before tightening the wheel, you should check the specific car manufacturer’s recommendation. The range of the torque wrench is also important. If the value needed for the car exceeds the tool’s working range, another suitable model should be used.

Torque wrench for an engine

When assembling and repairing an engine, precise tightening is especially important. Different fasteners may have different torque values defined. In some cases, tightening the bolts in a specific sequence is also important. A torque wrench for an engine allows the mechanic to maintain the defined values when performing this work. This is especially important when working with the cylinder head and other components where uneven tightening could create an additional problem. You should always be guided by the specific engine’s technical data and not by general values.

Digital dynamometer

A digital dynamometer gives the user the ability to control torque electronically. On the device’s display it is possible to see the current figure and control the approach to a specific value. A digital device is especially practical for a user who often has to work with different values. Depending on the model, there may be functions for choosing different units of measurement, capturing the maximum figure, a sound notification and others. The specific functionality should always be checked in the relevant product’s characteristics.

Electronic torque wrench

An electronic torque wrench differs from a mechanical model in the method of displaying and controlling data. The digital display lets the user see the torque value directly. Some electronic models also notify the user about the approach to a predefined value. This is especially practical in a professional environment when many fasteners need to be tightened to different values. When choosing an electronic dynamometer, accuracy, working range, battery type and the tool’s compatibility with the specific job are important.

Torque wrench 3 to 100 N.m

TechnoKing offers the Goyojo torque wrench, whose working range is 3 to 100 N.m. This is a professional electronic-type tool. The model has a 1/2 drive square and its length is approximately 29 centimetres. The 3 to 100 N.m range allows the tool to be used on various jobs with low and medium torque. If the value needed for a specific job falls within this range, such a device lets you control the tightening process more accurately.

Digital dynamometer 6 to 200 N.m

The TechnoKing category also features a digital dynamometer with a working range of 6 to 200 N.m. This model is of interest to a user who needs to work in a wider and higher torque range. The working capability up to 200 N.m makes it a practical device for various automotive and mechanical tasks. When choosing a specific tool, you need to determine in advance the minimum and maximum values needed for your daily work. This is exactly what will help you decide whether you need a model up to 100 N.m or a wider device up to 200 N.m.

How to choose a torque wrench?

When choosing a torque wrench, the first and most important parameter is the working range. Check what values you most often have to work with. Then pay attention to the drive square size. The tool should be compatible with the sockets and accessories you use for the job. The following should also be considered:

• Measurement accuracy
• Digital or mechanical type
• Working range
• Units of measurement
• Drive square size
• Tool length
• Comfort of use
• Intensity of professional use

The best torque wrench is the one whose capabilities really match your job.

Mechanical and digital torque wrench

Torque wrenches can work on different principles. In the case of a mechanical model, the user sets the desired value in advance and the tool gives a mechanical signal at the appropriate moment. In a digital-type device, the figure is processed electronically and shown on the display. Both types of tool have their own field of use. Many users prefer a mechanical model because of its simplicity. A digital dynamometer, on the other hand, is especially convenient for those who need to see the measured value directly on the display and have more detailed control. The choice depends on the frequency of use, working conditions and personal requirements.

Why is the correct tightening force important?

The purpose of a nut and bolt is to reliably fasten two or more parts. However, tightening with more force does not always mean better fastening. Excessive tightening can damage the thread, the fastener, the part or the surface. Insufficient tightening can also be problematic. That is exactly why many technical equipment manufacturers specify a particular torque. A torque tool lets the user bring the fastener into compliance with this requirement.

Torque wrench for a professional mechanic

For a professional auto service and workshop, a torque wrench is often a daily working instrument. A mechanic has to use different values on different cars and different components. That is why, for a professional tool, accuracy, working range and comfort become especially important. Having several torque wrenches of different ranges allows a specialist to use a more suitable tool for a specific job. Measuring a very small value with a tool of too large a range is not always the best practice.

Torque wrench for a home garage

A torque tool is not intended only for a professional auto service. If you change your car’s wheels yourself, service a motorcycle or perform various mechanical jobs, a torque wrench is a practical tool for the home too. By using it you can maintain the values specified by the manufacturer during the work. When choosing a tool for personal use, it is advisable to write down in advance what types of jobs you perform most often and what N.m range you need. This will help you avoid choosing a model with too large or insufficient a working range.

How to use a torque wrench?

First you should know the torque needed for the specific fastener. This data should be taken from the technical documentation of the car, device or specific component. Then the appropriate value is set on the tool, or the current figure is monitored on the digital display. Tightening should be performed with an even and controlled movement. For a specific type of torque wrench, following the manufacturer’s usage instructions is always necessary. Using the tool in a range that exceeds the working limits defined by the manufacturer is not recommended.

Care of a torque wrench

A torque wrench is also a measuring tool, so its care differs from the care of an ordinary wrench. It is advisable to protect the tool from strong impact and improper load. If the specific model needs periodic calibration or accuracy checking, you should take into account the manufacturer’s recommendation. In the case of an electronic model, monitoring the condition of the power cell is also important. Correctly storing and using the tool helps maintain its working characteristics.

Calibration of a torque wrench

Like other precise measuring devices, a torque tool may also need an accuracy check over time. In a professional environment this is especially important, because the device is used often. The need for and interval of calibration of a torque wrench depend on the specific manufacturer and model. If the tool has been dropped, received a strong impact or there is doubt about the accuracy of the results, checking it is especially important.

Torque wrench

A torque wrench is often also called a torque key. The English term Torque Wrench refers precisely to a wrench intended for controlling torque. So if you are looking for a torque wrench for a car, an engine or another mechanical job, this is about a torque wrench type tool. The main parameter in this case too is the working range. The chosen torque wrench should cover the values used in your job.

Digital torque meter

A digital torque meter gives the user the ability to obtain the torque figure electronically. This is especially practical when quick control of a specific value and work in different modes are needed. Depending on the model, a digital device may have various additional functions. Before buying, pay attention to the working range, accuracy and compatibility with specific tools.

Which dynamometer should we choose?

If you mainly work with relatively low and medium torque, a device with a range of 3 to 100 N.m may be suitable. If you also need to work at higher values, a model with a range of 6 to 200 N.m gives you a wider capability. The choice should always be based on the specific job. It is advisable to know in advance the lowest and highest N.m values you need and then choose the device.

Buying a dynamometer at TechnoKing

At TechnoKing you can choose dynamometers and torque wrenches for professional and personal use. The category features digital and electronic devices with various working ranges. If you are looking for a torque wrench, a digital dynamometer, a torque key or a torque measuring device, first compare the products’ working range and technical characteristics. A correctly chosen torque tool will help you tighten the fasteners of a car, engine and various mechanical equipment in accordance with the specific technical requirements.