Overview 7 types of pneumatic impact wrenches best: how to choose what to buy, the pros and cons, features, rating

Pneumatic wrenches have several advantages over other types of tools, including durability, reliability, operational safety, as well as resistance to prolonged stress and the ability to handle even the most complex fasteners. For this reason, an air tool is selected for the workshops, garages and service centers.

How to choose pneumatic wrench

Choosing a pneumatic wrench, it is necessary to clearly define the purpose of its use.

Angled or straight?

Angle Wrench for work with fasteners "side." In this case, the tool body acts as a shoulder effort. It is easier to hold in their hands when working with heavy fasteners. Models Direct rod cheaper, more familiar and structurally simpler.

Torque

This parameter determines the power pneumatic tools. The higher the torque, the more he is able to cope with more difficult fixture. The simplest wrenches for the work will be enough torque to 80-100 Nm. Models designed to work with fasteners trucks are obliged to issue thousands of Newton meters. Peak performance is required only to loosen, to disrupt the nut from the spot. When screwing huge efforts are not needed. On the contrary, tied with a bolt in the end easily bursts across, thread breaks. And if such troubles do not happen to unscrew it the next time, need more power.

Idling speed

It is believed that the spindle speed is determined by idle pneumatic power nutrunner. In fact, turnover only indicate the design features. Thus, a powerful tool capable of delivering up to 7 thousand. rev / min, but the truck models not speed is important, and effort. For this reason, they have a great airflow, but the idle speed are about 3 thousand. rev / min.

Working pressure and air consumption

The air flow rate is directly proportional to the power tool, it may be different for the same operating pressure in the pneumatic system. For example, standard pressure of 6.3 atmosphere model average power consume in about 150 liters per minute of air. This figure is the "athletes" can exceed 800 liters.

Compressor

wrench must conform to the specifications of the compressor. The passport to the instrument always given the recommended requirements for the pneumatic system. The model is chosen such that the compressor is able to provide normal operating pressure at the stated flow rates.

Planting spindle size (chuck, square shank)

Power wrench determines the boarding shank size, which is usually specified in inches. The following standards: 1, ½, ¾ inches and less common options. The more powerful the tool, the greater the diameter of the spindle. This is natural, since the square of a small section at high power simply will not sustain the load. It is important to note that a non-standard shank will be difficult to find a head, will have to re-buy an additional adapter.

The firing mechanism

Due to jerks when loosening fasteners susceptible faster. In addition, the half nuts is simply impossible to unscrew the unstressed tool. Therefore, the choice is always given the advantage of impact wrenches.

Possibility of adjusting the tightening force and the presence of the reverse

Almost all modern models are equipped with a switch Reverse - reverse. This feature allows you to both tighten fasteners with high effort, and unscrew the old bolts. But in the market there are also models without reverse. Their spindle rotates in one direction only.

tightening torque adjustment function is also common, but this is the first thing that goes down from the low-quality models. It allows you to set the maximum force to be applied to the fastener. torque adjustment accuracy even in expensive tools from branded manufacturers does not exceed 10%. If the error should be reduced to zero, it is better to use a torque wrench.

Dimensions, weight and ergonomics

Tool weight is reduced through the use of lightweight high-strength alloys. In the market there are models with plastic housing, but their quality was initially dubious.

For the convenience of pneumatic wrenches equipped with rubberized pads on the body and a handle, and a rotary nozzle for air evacuation. The tool is used at different angles, and escaping air flow directed to the ground, picks up dust. Debris falls into the eyes and the lungs. The ability to adjust the direction of the air nozzle is an added bonus.

Best shock pneumatic wrench

Model Ingersoll RAND 631L It is the best in functionality. It is designed for use in workshops, production shops and automotive services. This wrench can easily cope with heavily compounds due to torque imposing a strong impact mechanism. Additional tool handle provides a comfortable hold.

Ingersoll RAND 631L equipped with a 4-stage power control, is able to cope with fasteners up to M42. For the convenience of having a main handle pistol closed design.

Characteristics

• cartridge - 1 inch;
• pressure - 6,2 atm .;
• torque - 4.3 kNm;
• Air consumption - 426 liters per minute;
• rotation speed - 3.5 thousand. rpm;
• weight - 16.6 kg.

pros

• large work resource;
• robust housing;
• the possibility of continuous operation;
• high torque;
• good air flow.

Minuses

• in the configuration is only an extra handle;
• high price.

Best truck pneumatic wrench

Powerful pnevmogajkovert Rossvik RT-5880 tire changers for work with trucks of any tonnage. Has an elongated spindle, it can be used with a deep rim. The tool is equipped with percussion mechanism, and a reverse pre-installation torque system. Imposing torque of 3.8 kNm requires air flow of 1.3 thousand. l / min.

In addition to truck tire mounting, the instrument can be used in manufacturing and construction sites.

Characteristics

• cartridge - 1 inch;
• pressure - 6,3 atm .;
• torque - 3800 Nm;
• air flow rate - 1.3 thousand. liters per minute;
• rotation speed - 3.5 thousand. rpm;
• weight - 17.3 kg.

pros

• high torque;
• possibility of working with bolts diameter up to 45 mm;
• quality impact mechanism.

Minuses

• the weight;
• huge air flow.

Best professional pneumatic wrench

Model Metabo DSSW 2440-1 It refers to a pneumatic impact wrenches professional class. It is used to work with the most difficult fasteners. Loosening and tightening nuts trucks with deep rims is possible thanks to the elongated spindle. Comfortable operation is provided two arc-shaped arms. weight of the device does not allow to operate it with one hand, but this is not surprising, because the torque of 2440 Nm. Hold so much power is really difficult. Dual Shock system allows soured unscrew the nuts up to M38 inclusive.

Metabo DSSW 2440-1 " It is one of the most powerful impact wrenches. The kit, in addition to the oil, enters the hose clamp and 10 mm tip, and insert the pin 2 to ½ ".

Characteristics

• cartridge - 1 inch;
• pressure - 6.2 bar;
• torque - 2440 Nm;
• Air consumption - 780 liters per minute;
• rotation speed - 6 th. rpm;
• weight - 7.3 kg.

pros

• ability to work with up to M38 fasteners;
• Double punch;
• high rate of speed;
• drive spindle of great length;
• oil included.

Minuses

• dimensions and weight;
• High air flow rate;
• cost;
• keep the tool is only possible with both hands;
• may decay while holding the tool heads in the lower position.

Best angular pneumatic wrench

The pneumatic model SUMAKE ST-5553 designed for loosening and tightening of fasteners up to 10M at the professional level. Direct angular shape tool handle allows to perform work in confined spaces. This wrench is designed for continuous operation in a conveyor assembly units. The main difference from the shock option is to work with high precision fasteners at multiple repeatability of operations.

The rapid attenuation of fasteners available due to the reversing function, a pneumatic motor has increased resistance to excessive loads. Air consumption is 400 liters per minute, for a device of compact size and low weight a very impressive figure. But this option is offset by efficiency.

Characteristics

• Insert - ½ inches;
• pressure - 6.5 atm .;
• torque - 61 Nm;
• Air consumption - 400 liters per minute;
• rotation speed - 150 rpm;
• weight - 1.2 kg.

pros

• convenient start button;
• ergonomic handle;
• the presence of the reverse;
• resistance to prolonged high loads;
• light weight.

Minuses

• High air flow rate;
• air is discharged to the side of a square, raising dust during operation.

Best pneumatic impact wrench with adjustable

impact type pnevmogajkovert FUBAG IW-720 It has high performance and high torque. Its compact design is the reverse function, which allows not only to unscrew the large nut soured, but tighten them. The main purpose of this model - working with the hub nuts cargo and passenger vehicles.

Speed ​​wrench has a switch 4 stops and operates in both directions of rotation of the spindle. To require the presence of an air hose diameter 6x8 mm. The tool has a high fire safety due to the possibility to operate on compressed air. Compact dimensions due to lack of engine. This is an excellent choice for garages and various service centers equipped with air line.

Characteristics

• Insert - ½ inches;
• pressure - 6,3 atm .;
• torque - 720 Nm;
• Air consumption - 226 liters per minute;
• rotation speed - 8 thousand. rpm;
• weight - 2.8 kg.

pros

• Power for this category;
• cost;
• compactness;
• easy torque adjustment.

Minuses

• reverse switch hard;
• equipment.

Best reversing pneumatic wrench

Powerful pnevmogajkovert ROTAKE RT-5563 It belongs to a professional-grade tool, used for plumbing work with light and heavy machinery, including special purpose vehicles. The body is made of steel and aluminum alloy. For more convenient use of a tool set shorter shaft and additional handle. Used in tandem with the pneumatic line having an air preparation unit.

pistol wrench ROTAKE RT-5563 It consumes up to 340 liters of air per minute, but a high flow rate fully compensated tool functionality. Built-in percussion mechanism and a relatively large weight allows even cope with large nuts become attached.

Characteristics

• Shank - 1 inch;
• pressure - 6.3 bar;
• torque - 1898 Nm;
• air flow - 340 liters per minute;
• rotation speed - 4500 rpm;
• Mass - 7 kg.

pros

• the presence of the reverse;
• additional handle.

Minuses

• air consumption;
• the weight.

Best pneumatic impact wrench with head set

Corner model Metabo DRS 68 Set 1/2 " great for work with fasteners in tight spaces. The height of the head is 55 mm, and the kit includes a driveshaft to work at angles up to 45 °, and 10-inch strip. chuck top is reverse switch that allows you to activate it in the desired moment. For twisting force adjustment knob is provided on the end of the handle. Start key has skoboobraznuyu form wrench starts by pressing.

Housing wrench has a rubber coating that, together with an ergonomic handle makes it comfortable to use. The side frame is rotating duct type air outlet.

Characteristics

• Insert - ½ inches;
• pressure - 6,2 atm .;
• of torque - 68 Nm;
• air flow - 220 liters per minute;
• Rotation speed - 175 rpm;
• weight - 1.2 kg.

pros

• set of heads on 10-27 mm (7 pieces);
• carrying case;
• convenient start button;
• working resource;
• small size and weight;
• speed controller.

Minuses

• no shock function;
• High air flow rate;
• it is impossible to switch one-handed reverse.

On wrenches is not worth saving, but do not immediately buy an expensive model with tremendous torque. It is important to assess the possibilities of the instrument and choose the one that will meet the stated requirements.