The field of use of a wrench is not at all limited to car service specialists.
Use area
This device is actively used today and within the framework of assembly plants, in the field of the furniture industry and representatives of construction companies. This list is constantly updated with new areas, where they have already managed to appreciate the high speed of work provided by new technologies. If you also need an air impact wrench, it is important to know which features to look for.
Tool device
Most often, a six-blade rotary engine is installed in such tools, which is located in the body. The impact mechanism, as a rule, consists of a cam clutch, a pusher, a flywheel with a shaft and a spring; there are a roller and a pin in the design. For comfortable use in different positions, the equipment is equipped with a handle, which is installed in two positions relative to the body. Not every pneumaticwrench has this option, but it is desirable.
Working principle
The described tool functions from compressed air, which is injected into the engine through the starting device and reverse. The movement from the rotor is transmitted to the impact mechanism, or rather, the flywheel, which operates on the principle of a clutch. At the moment when the screwing resistance reaches such a force that is sufficient to overcome the spring mechanism, the clutch, interchangeable head and pusher stop. But the roller continues to rotate, it is designed to move the pusher, as a result of which the impact mechanism is activated.
Consumer feedback on choice
A pneumatic impact wrench can have a variety of controls to control tightening force, torque and screwing speed. However, as consumers say, more sophisticated tools can fail quickly. If you decide to choose a multifunctional device, as users emphasize, then you should opt for those models that are made by manufacturers that have proven themselves well in the market for their respective products. It is best to refuse Chinese units, they are usually unreliable. First of all, you will encounter a problem that is expressed in the breakdown of the tightening force regulator.
Cargo nutrunner specifications
If you needpneumatic wrench for trucks, then you should not rush to make a choice. Experts say that expensive tools are not always the best option, because the device must meet certain needs. It is important to answer yourself a question before purchasing about how often you have to unscrew or tighten the nuts. This question is correct, because in different models, the torque can be concentrated on unscrewing or screwing. For an assembly line, the tightening torque is especially indispensable, but for a car service or solving the problems of a construction team, both operations will be the most important. Experts do not advise concentrating on the number of revolutions. The higher the speed, the more difficult it will be for you to control the situation. In this case, it is quite difficult to exclude constriction. In some cases, it is necessary to put on fasteners to prevent material distortion. If you decide to purchase a resourceful unit, then you need to pay attention to whether it has a quick stop operation. It is important to decide if the craftsman will change heads for different nut sizes. All the models described are capable of functioning with several nozzles, but the larger their list, the higher the price will be. If you work with only two sizes, then the model with standard nozzles will be enough.
Torque Adjuster Characteristic
After you know what a pneumatic wrench is, you can deal with the torque regulatortightening, which is an important point when choosing. If you need a model with a verified torque, you need to purchase a product from popular supplier companies. It is necessary to take into account the moment that even their units may have a pneumatic error of 10%. If you need great accuracy, then it is important to pay attention to hydraulic impact wrenches. For such instruments, the error is usually 2%.
What else you need to know about the pneumatic impact wrench
The described tool has some peculiarities. A pneumatic impact wrench should be used without classical errors, the most popular of which is the fastening constriction. If you are using a unit with a torque of 2000 Newton meters, then there is a need to tighten the nut or bolt with some margin. After some time, many motorists understood those mechanics who accidentally pulled threaded connections. If excessive torque is allowed, this can cause problems with vehicle maintenance. This circumstance can lead to breakage of light-alloy materials.
In order for the repair of a pneumatic wrench not to be needed ahead of schedule, it is necessary to follow the technology. Much will depend on the quality of the air used, which must meet the requirements prescribed by the manufacturer. The air should be enriched with oil and as dry as possible. In order to dry the air, you can use special filters,while lubricators will be needed to supply oil. If you use the described tool with air that does not comply with the above rules, then the unit will last much less.
If you have a pneumatic wrench in front of you, it is recommended to read the reviews even before purchasing the model. But during operation, you must use special heads that are made of a special alloy. This statement is relevant in the case when you will be using an impact wrench. If you operate the tool in tandem with conventional heads, this can cause rapid wear of the shaft and the need to replace it. It is important to take into account this feature, because the tool described in the article is a product that cannot be called too cheap pleasure. That is why its operation must be taken seriously.
Conclusion
Pneumatic wrench, the characteristics of which were described in the article, must be used in accordance with all the rules that can be found in the instructions supplied by the manufacturer. Only then the tool will not require premature repairs, which will not require additional funds. You can buy a similar tool of the WESTER PSS-10 brand for 5000 rubles. This unit is a shock unit, it demonstrates 7500 rpm, and the guarantee for it will be valid for 3 years.
