The scope of use of the wrench is not at all limited to car service specialists.
Area of use
This device is actively used today and within the assembly enterprises, in the field of the furniture industry and representatives of construction companies. This list is constantly replenished with new areas where we have already managed to appreciate the high speed of work provided by new technologies. If you also need a pneumatic wrench, then it is important to know what characteristics to pay attention to.
Tool device
There are no particular difficulties in the design of the wrench; among the leading nodes, one should distinguish a pneumatic motor, a reverse mechanism, an impact mechanism, a housing, as well as a starting device. Most often, a six-blade rotary engine, which is located in the housing, is installed in such tools. The impact mechanism, as a rule, consists of a cam clutch, a pusher, a flywheel with a shaft and springs; 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 housing. Not every pneumatic wrench has such an addition, but its presence is desirable.
Principle of operation
The described tool operates from compressed air, which is pumped into the engine through a starting device and reverse. The movement from the rotor is transmitted to the percussion mechanism, and more precisely, to the flywheel, which operates on the basis of the clutch. At the moment when the screwing resistance reaches such a force that is enough to overcome the spring mechanism, the coupling, the interchangeable head and the 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.
Customer reviews about the choice
A pneumatic wrench can have many adjustments that allow you to determine the tightening force, torque and screwing speed. However, as consumers say, more sophisticated tools can quickly fail. If you decide to choose a multifunctional device, as users emphasize, then you should opt for those models that are made by manufacturers who have proven themselves in the market for relevant products. It is best to abandon Chinese units, they are usually unreliable. First of all, you will encounter a problem, which is expressed in the breakdown of the regulator of the torque force.
Cargo Wrench Features
If you need a pneumatic wrench for trucks, then you should not rush to make a choice. Experts say that not always expensive tools are the best option, because the device must meet certain needs. It is important to answer your question before purchasing about how often you will have to unscrew or tighten the nuts. This question is correct, since in different models the torque can be concentrated on loosening or twisting. For the assembly line, the tightening torque is especially indispensable, but for the car service or solving the tasks of the construction team, both operations will be 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. Moreover, it is quite difficult to exclude the constriction. In some cases, it is necessary to fit fasteners in order to avoid distortion of the material. If you decide to purchase a revolving unit, then you need to pay attention to whether there is a quick stop operation in it. It is important to decide whether the master will change the heads for different sizes of nuts. All the described models are able to function with several nozzles, but the larger their list, the higher the price will be. If you work with only two sizes, then a model with standard nozzles will be quite enough.
Torque control characteristic
Once you know what the pneumatic wrench device is, you can figure out the torque regulator, which is an important point when choosing. If you need a model with a verified tightening torque, you need to purchase a product from popular supplier companies. It is necessary to take into account the fact that even their units can have a pneumatic error of 10%. If you need great precision, it is important to pay attention to hydraulic wrenches. For such tools, the error is usually 2%.
What else you need to know about a pneumatic wrench
It has some features of the described tool. A pneumatic wrench should be used without classical errors, the hauling of fastening is the most popular of them. If you are using an aggregate 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 joints. If excess torque is allowed, this can cause problems with car maintenance. This circumstance can lead to damage to alloy materials.
In order for the pneumatic wrench to be not repaired before the due date, the technology must be followed. 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 drain the air, you can use special filters, while lubricants will need to supply oil. If you use the described tool with air that does not comply with the above rules, then the unit will serve much less.
If you have a pneumatic wrench, it is recommended that you read the reviews before you purchase the model. But during the operation, you must use special heads, which are made of a special alloy. This statement is relevant in the event that you will use 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 this feature into account, because the tool described in the article is a product that cannot be called too cheap a pleasure. That is why it is necessary to approach its operation seriously.
Conclusion
A pneumatic wrench, the characteristics of which were described in the article, should be used in accordance with all the rules that can be found in the instructions attached by the manufacturer. Only then the tool will not require premature repair, which will not need to spend additional funds. You can buy a similar tool of the brand WESTER PSS-10 for 5000 rubles. This unit is shock, it demonstrates 7500 rpm, and the warranty will last for 3 years.