Impact wrenches pneumatic shock: marks, characteristics

A hand-held mechanical tool is good in many respects, but its main advantage lies in its independence from energy sources. Such devices are autonomous and easy to handle, but not always muscular strength is enough to perform work operations. To help in these situations, an electric tool comes, which also has serious shortcomings in the form of energy costs and attachment to the outlet. If it is a matter of simple mechanical operations, then a set of pneumatic tools will be a way out of the situation, which also includes nutrunners. These are compact and ergonomic devices, through which almost all the work associated with servicing the fastening elements can be performed.

Principle of operation of a pneumatic tool

Like all pneumatic tools, a wrench of this type needs to be connected to a compressor, from which an air jet of sufficient strength is supplied. By the time this feed is activated, the user must apply a nozzle to the fastener. Then you can activate the trigger of the instrument. Through the hose an air jet will be fed to the device and will start the rotation of the rotary mechanism. Rotational movement will act on the spindle, due to which the pneumatic impact wrenches screw in the fastener. Thus, it is possible to easily service screws and bolts not only in the direction of twisting, but also in reverse. The power of the pneumatic tools is different, but, as practice shows, even the average in the performance indicators of the model are able to perform operations in a few seconds. In terms of efficiency, such devices are almost inferior to battery and network analogs, but they are smaller in size, which increases their ergonomic advantages. Another thing is that a full compressor requires a compressor.

Features of shock models

Most of the wrench types of this type operate with a shock mechanism. This means that the rotational action is accompanied by force impulses, increasing the productivity of the work. By means of an intensive action on the head of the fastening element, even rusty bolts can be removed. In simple household operations, it is possible that the impact mechanism will be superfluous, but in the repair shops, tire shops and car-care centers, an additional effort is simply necessary. In addition, there is a whole group of massive fasteners, which even with a normal fit do not unscrew without impact.

But it is important to take into account another aspect. The fact is that it is desirable to perform neat operations with small fasteners using an unstressed tool. Firstly, it will not damage the head of the part, and secondly, its efforts will be quite enough to serve a small-sized hardware. As a rule, a pneumatic impact wrencher is used in work with fasteners, the diameter of which exceeds 24 mm. In order not to break the thread, otherwise it is better to use unstressed models with the optimum tightening force.

Main characteristics

One of the main performance characteristics of this tool is the tightening torque. It would seem that the higher this effort, the wider the range of possibilities for the application of the device. However, too much tightening torque can damage the thread. Depending on the model, it can vary from 30 to 3000 Nm. For example, for a tool for car wheel nuts, this value is 100 Nm. Assistance in choosing models for this indicator will also speed idling, which are compared with the requirements for servicing specific wheels. In particular, the pneumatic impact pneumatic impact wrench provides up to 8000 rpm. But this parameter should not be limited. If the seats do not match, then the optimally selected effort will not help in the work. Usually for cars use a tool with a planting diameter of half an inch. This means that the nut driver can unscrew the bolts by 25 mm. If we are talking about 32-millimeter screws, then we need to buy a tool with a diameter of 3/2 inches.

Connecting to the compressor

The source of compressed air is necessary in the operation of the pneumatic tool, and it should also be selected for specific characteristics. In this case, two parameters should be considered: air flow and operating pressure. At all it is not necessary to compare these values with the data of the screwdriver directly. The main thing is that the compressor has indicators that exceed the similar characteristics of the main tool. Actually, entry-level models already have modest performance indicators, but pneumatic impact wrenches for tire fitting or assembly shop maintenance require a more efficient compressor. Correctly organized interconnection between the two devices will ensure uninterrupted and safe operation.

Models of Bosch

The manufacturer of Bosch is well-known for both pneumatic tools and compressors, therefore in the assortment of this brand it is possible to make a complex acquisition. With regard to product quality, the users of this tool note the wide range, reliability, efficiency at unscrewing and the optimal cost. So, if you need a pneumatic impact drill, the price of which does not exceed 5 thousand rubles, then it's worth to turn to the Fubag models. In the Russian market, the firm offers quality modifications for 3-4 thousand rubles. At the same time we must immediately prepare for the original ergonomic solutions. Tools, though reliable, but some users point to their non-standard fit in the hand, which has a long time to get used to.

Sumake pneumatic grinder

By the criterion of the ratio of power and prices, users put the products of this brand on one of the first places. At the same time, it should be noted that the models are not cheap, and their average cost is 10-15 thousand rubles. For this amount, the master gets the opportunity to conveniently adjust the tool even in mittens, high performance and stylish look. Most importantly, the Sumake pneumatic impact wrench is superior even to electric models in the same price range. Also, the masters appreciate the small size of such models, which has a favorable effect on functionality and ease of use.

Eastwood Models

If the requirements for power and reliability are not in the first place, then it makes sense to purchase an inexpensive but convenient tool from Eastwood. The devices of this line are used in everyday tasks, since they can not cope with professional level operations. An important advantage is the cost, by which a pneumatic impact drill is realized. The price is in the middle corridor from 2 to 3 thousand rubles. Users note the presence of a weak duralumin alloy and etching in the process of work, but if it is planned to serve typical bolts with small size, then the characteristics of Eastwood tools will be quite enough.

How to choose the best pneumatic screwdriver?

The device itself and the performance characteristics of such equipment require special use. This should be either working with hardware in a regular mode, or performing operations in difficult conditions. If, for example, actions with automotive and large factory screws are to be considered, care should be taken to the appropriate seating format and power characteristics. For universal tasks a set of pneumatic tools is suitable, which will allow performing a number of assembly, finishing and other operations. The kit may also include spray guns, blowers and other devices, often used in car repair shops.

Conclusion

Those whose work is associated with the regular maintenance of bolts, screws and other twisting hardware, use of mechanical keys does not make sense. A special tool with a driving force allows you to save time on such actions while maintaining the physical condition of the fastening element. Of course, a pneumatic impact wrench is not the only solution to such problems. But it has several principal advantages: a small mass, safety in operation and optimal performance. Speaking of shortcomings, first of all it is worth mentioning the need to purchase a compressor, which will provide the same effort in the process of performing the work.