Torque Wrenches
With us you get qualitative torque wrenches for tightening screws on car, bike, e-bike up to precision mechanics at a fair price. Our torque wrenches cover all common tightening torques and are available in different sizes, from 1/4", 3/8" up to 1/2". Each of these torque wrenches is loaded several times as part of the calibration process at three predetermined torque values until it is triggered to the respective set point. In addition, after calibration, the torque wrenches are tested in production by our trained staff to guarantee you a reliable and safe torque wrench.
.jpg "Preview: FAMEX 10864 Torque Wrench, 50-350 Nm, 1/2\"-dr.")
.jpg "Preview: FAMEX Torque Wrench 10886-KS, 30-210 Nm, 1/2\"-dr.")
.jpg "Preview: FAMEX 10886-3N Torque Wrench with Wheel Lug Nut Sockets, 30-210 Nm, Set 3-pcs.")
.jpg "Preview: FAMEX 10886-3N Torque Wrench with Wheel Lug Nut Sockets, 30-210 Nm, Set 3-pcs.")
.jpg "Preview: FAMEX 10869 Torque Wrench, 20-110 Nm, 3/8\"-dr.")
.jpg "Preview: FAMEX 10896 Torque Wrench, 1-8 Nm, 1/4\"-dr.")
.jpg "Preview: FAMEX 10872 Torque Wrench, 6-30 Nm, 1/4\"-dr.")
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Quality and calibration of torque wrenches
Bolted joints are one of the most frequently used types of connection in industry and trade. Compared to many other connections, screwed connections can be loosened again without destruction. Torque wrenches are calibrated measuring tools that allow you to comply with prescribed tightening torques. This means that screwed connections can be tightened or loosened in a controlled manner. Torque wrenches give you more security and ensure that the material and the screws are not damaged. It often happens that screwed connections are tightened too tightly with conventional tools. Car wheels that are mounted too tightly are just one example. Serious consequences, such as an over-tightened and stripped thread, can be reduced in this way. Tightening beyond the specified tightening torque leads to higher material stress and premature wear.
Conversely, overtightened bolts can also have serious consequences. If the bolts are too loose, this poses an extremely high safety risk. Load and vibrations can cause the bolted connections to loosen. This represents a high risk for people as well as for material assets. By using our calibrated torque wrenches you can avoid these dangers.
According to our experience and various test purchases of (GS-approved) torque wrenches, the deviations from the nominal value are up to 30%, in individual cases even higher. We have found that the release value is almost always below the nominal value. Only rarely do these wrenches trigger above the set value. In practice, this means that, among other things, wheel nuts are only tightened to less than 100 Nm instead of the 120 Nm required, for example, and sometimes even considerably less than 90 Nm. This can have devastating consequences for your safety. Insiders know: a considerable proportion of low-priced torque wrenches are not calibrated or are seriously miscalibrated!
How does a torque wrench work?
The desired torque value is set by turning the rotary handle. To adjust, unlock the twist handle. On the wrench you will find the scale division of the main scale with the basic setting values. The basic setting values of the main scale increase in steps of 2, 10, 14, 20, 24, 35, 70 or 140 Nm, depending on the model. The ring scale with the fine graduation for setting the intermediate values is located on the rotary handle. When the rotary handle is turned clockwise from "0" to "0", the setting value increases in increments of 2, 10, 14, 20, 24, 35, 70 or 140 Nm, depending on the model.
To set a specific torque value, turn the rotary handle until the "0" mark on the ring scale aligns with the line in the center of the main scale to form a basic setting value. Set intermediate values according to the ring scale. The reference value of the fine graduation is the line in the middle of the main scale. After setting the torque value, make sure that the lock is engaged.
Achieve exact torque values:
If possible, do not use extensions. Do not use articulated joints under any circumstances. Place the torque wrench with the socket inserted on the screw connection and only operate it at the rotary handle and pull or press evenly and slowly. Reaching the torque value is indicated by a clicking sound in the tool. The tightening process must then be stopped immediately!
Caution: The click signal is weaker at low set torque values! Continuing the screw tightening beyond the click signal leads to incorrect tightening torques and can damage the mechanics of the torque wrench and influence the calibration of the torque wrench!
Checking the torque wrench:
The torque wrench is calibrated at the factory. As with any torque wrench, it is imperative that this wrench be checked twice a year for frequent use and weekly for continuous use. Please note that this inspection of this torque wrench can only be performed by trained persons with high quality and calibrated electronic testing equipment!
Clockwise and counterclockwise rotation:
Our Pro models allow measurements in both directions of rotation. These models allow you to quickly switch from clockwise to counterclockwise rotation, so you can trigger depending on the application. All you have to do is operate the changeover lever.
FAMEX torque wrenches are additionally tested
Each torque wrench delivered by us in the measuring range 6-30 Nm to 70-350 Nm is, after calibration in production, additionally subjected to an additional quality and function check before delivery. In doing so, we specifically test the middle measuring range according to DIN 6789, which is usually the most important in practice. This test is performed on a separate test unit using high-quality electronic test equipment from the manufacturer Norbar. This additional test is carried out to rule out calibration errors in production caused by human error, faulty or incorrectly adjusted calibration equipment. This quality initiative is the answer to the large number of incorrectly measuring and therefore dangerous torque wrenches on the market. FAMEX torque wrenches are therefore somewhat more expensive than the countless offers in the low-price segment. However, we are convinced that this is the only way to ensure perfect product quality.
What are the advantages of a calibrated torque wrench?
Calibrated torque wrenches are highly recommended, especially for applications where the highest accuracy is required. Calibration is an essential point in the quality of torque wrenches. In simple terms, this is the precise adjustment of the torque wrench, which allows accurate measurement in the first place. What is meant here is the conformity of the screw tightening with the set torque within the framework of certain tolerances, which are defined in DIN/ISO 6789. If careful calibration of the torque wrench is not performed, the measurement accuracy of the torque wrench is left to chance. Calibration of the torque wrench during production is a comparatively costly operation. It requires high-quality electronic measuring equipment that is repeatedly recalibrated at short intervals, as well as a responsible employee who performs the calibration of the torque wrench.
Calibration is also time-consuming, as both the lowest and highest setting values must be set and adjusted in each case. Subsequently, the most important one in later use, namely the middle measuring range, is checked. The middle measuring range cannot be adjusted separately. Proper functioning of the torque wrench in the entire intermediate range between the highest and lowest setting value is only ensured if the spring mechanism of the torque wrench is manufactured with corresponding precision.
If the tension curve of the spring does not correspond exactly to the values intended in the design of the torque wrench, the release values of the wrench in the middle measuring range will deviate accordingly and will not correspond to the set values. If the measurement result in the middle measuring range is not within the tolerance, the torque wrench is not suitable and the spring mechanism must be replaced by components of perfect quality. The specifications of DIN/ISO 6789 allow deviations of up to 4% from the set scale value.
Bolted joints are one of the most frequently used types of connection in industry and trade. Compared to many other connections, screwed connections can be loosened again without destruction. Torque wrenches are calibrated measuring tools that allow you to comply with prescribed tightening torques. This means that screwed connections can be tightened or loosened in a controlled manner. Torque wrenches give you more security and ensure that the material and the screws are not damaged. It often happens that screwed connections are tightened too tightly with conventional tools. Car wheels that are mounted too tightly are just one example. Serious consequences, such as an over-tightened and stripped thread, can be reduced in this way. Tightening beyond the specified tightening torque leads to higher material stress and premature wear.
Conversely, overtightened bolts can also have serious consequences. If the bolts are too loose, this poses an extremely high safety risk. Load and vibrations can cause the bolted connections to loosen. This represents a high risk for people as well as for material assets. By using our calibrated torque wrenches you can avoid these dangers.
According to our experience and various test purchases of (GS-approved) torque wrenches, the deviations from the nominal value are up to 30%, in individual cases even higher. We have found that the release value is almost always below the nominal value. Only rarely do these wrenches trigger above the set value. In practice, this means that, among other things, wheel nuts are only tightened to less than 100 Nm instead of the 120 Nm required, for example, and sometimes even considerably less than 90 Nm. This can have devastating consequences for your safety. Insiders know: a considerable proportion of low-priced torque wrenches are not calibrated or are seriously miscalibrated!
How does a torque wrench work?
The desired torque value is set by turning the rotary handle. To adjust, unlock the twist handle. On the wrench you will find the scale division of the main scale with the basic setting values. The basic setting values of the main scale increase in steps of 2, 10, 14, 20, 24, 35, 70 or 140 Nm, depending on the model. The ring scale with the fine graduation for setting the intermediate values is located on the rotary handle. When the rotary handle is turned clockwise from "0" to "0", the setting value increases in increments of 2, 10, 14, 20, 24, 35, 70 or 140 Nm, depending on the model.
To set a specific torque value, turn the rotary handle until the "0" mark on the ring scale aligns with the line in the center of the main scale to form a basic setting value. Set intermediate values according to the ring scale. The reference value of the fine graduation is the line in the middle of the main scale. After setting the torque value, make sure that the lock is engaged.
Achieve exact torque values:
If possible, do not use extensions. Do not use articulated joints under any circumstances. Place the torque wrench with the socket inserted on the screw connection and only operate it at the rotary handle and pull or press evenly and slowly. Reaching the torque value is indicated by a clicking sound in the tool. The tightening process must then be stopped immediately!
Caution: The click signal is weaker at low set torque values! Continuing the screw tightening beyond the click signal leads to incorrect tightening torques and can damage the mechanics of the torque wrench and influence the calibration of the torque wrench!
Checking the torque wrench:
The torque wrench is calibrated at the factory. As with any torque wrench, it is imperative that this wrench be checked twice a year for frequent use and weekly for continuous use. Please note that this inspection of this torque wrench can only be performed by trained persons with high quality and calibrated electronic testing equipment!
Clockwise and counterclockwise rotation:
Our Pro models allow measurements in both directions of rotation. These models allow you to quickly switch from clockwise to counterclockwise rotation, so you can trigger depending on the application. All you have to do is operate the changeover lever.
FAMEX torque wrenches are additionally tested
Each torque wrench delivered by us in the measuring range 6-30 Nm to 70-350 Nm is, after calibration in production, additionally subjected to an additional quality and function check before delivery. In doing so, we specifically test the middle measuring range according to DIN 6789, which is usually the most important in practice. This test is performed on a separate test unit using high-quality electronic test equipment from the manufacturer Norbar. This additional test is carried out to rule out calibration errors in production caused by human error, faulty or incorrectly adjusted calibration equipment. This quality initiative is the answer to the large number of incorrectly measuring and therefore dangerous torque wrenches on the market. FAMEX torque wrenches are therefore somewhat more expensive than the countless offers in the low-price segment. However, we are convinced that this is the only way to ensure perfect product quality.
What are the advantages of a calibrated torque wrench?
Calibrated torque wrenches are highly recommended, especially for applications where the highest accuracy is required. Calibration is an essential point in the quality of torque wrenches. In simple terms, this is the precise adjustment of the torque wrench, which allows accurate measurement in the first place. What is meant here is the conformity of the screw tightening with the set torque within the framework of certain tolerances, which are defined in DIN/ISO 6789. If careful calibration of the torque wrench is not performed, the measurement accuracy of the torque wrench is left to chance. Calibration of the torque wrench during production is a comparatively costly operation. It requires high-quality electronic measuring equipment that is repeatedly recalibrated at short intervals, as well as a responsible employee who performs the calibration of the torque wrench.
Calibration is also time-consuming, as both the lowest and highest setting values must be set and adjusted in each case. Subsequently, the most important one in later use, namely the middle measuring range, is checked. The middle measuring range cannot be adjusted separately. Proper functioning of the torque wrench in the entire intermediate range between the highest and lowest setting value is only ensured if the spring mechanism of the torque wrench is manufactured with corresponding precision.
If the tension curve of the spring does not correspond exactly to the values intended in the design of the torque wrench, the release values of the wrench in the middle measuring range will deviate accordingly and will not correspond to the set values. If the measurement result in the middle measuring range is not within the tolerance, the torque wrench is not suitable and the spring mechanism must be replaced by components of perfect quality. The specifications of DIN/ISO 6789 allow deviations of up to 4% from the set scale value.
