Types of pneumatic impact wrenches
Buying a reliable handheld device is now not difficult; several varieties of it can be found in retail outlets. A pneumatic impact wrench is a common tool, different models of which differ in the following parameters:
- Execution form - straight, pistol-type, angular.
- Maximum torque.
- Landing size of the square of the spindle.
- Head sizes - standard and extended.
- Using a ratchet or percussion mechanism.
- Air flow.
Pneumatic impact wrench
Corrosion makes dismantling a threaded connection difficult, old bolts hold in place as well as welding. The pneumatic load wrench with an impact mechanism quickly destroys the adhered layer and loosens the fasteners even in the most difficult places. The principle of its operation is as follows:
- The impact mechanism consists of cams and a stop, which at first simply transmit the rotating force.
- If the main effort is no longer enough, the hammers begin to hit the stop.
- When the bolt loosens and begins to loosen, the hammers stop hitting and rotate with the stop.
Angle pneumatic impact wrench
Straight models are great for use in accessible areas, but what about fasteners installed under dashboards, between protruding parts, and other tricky locations? The angular pneumatic nutrunner is arranged somewhat differently, its description shows all the advantages of the non-standard arrangement of the spindle axis. In this device, it is deployed perpendicular to the axis of the body, which allows locksmith work to be performed from the side of the bolted connection.
How to Choose an Electric Impact Wrench?
It is very important not to make a mistake when purchasing any device for both home and professional use. Additional features to keep in mind when purchasing a nutrunner can improve the usability of the unit.
- Impact mechanism - An important function that is useful when tightening nuts or problems with loosening them. The electric impact wrench easily handles tough tasks such as removing the wheels of a car.
- Torque adjustment - an additional function that prevents thread stripping.
- Ergonomic qualities - before buying, you should check whether it is comfortable to hold the tool in your hands, whether it weighs a lot, where the start button is located.
Electric Impact Wrenches Rating
Compact and easy-to-use electric wrenches are popular in everyday life and in large industries
The ranking of the best models worth paying attention to is presented below.
- Electric impact wrench Makita TW-350 - a powerful shock model operating at a speed of 2 thousand rpm. The shock-resistant body ensures the durability of the device, and the functions of the reverse and speed control - ease of use.
- BISON ZGUE-350 - nutrunner with adjustable tightening torque. The durable aluminum housing is easy to operate. Special holes make it easy to change the brushes when they fail, the impact mechanism is indispensable when working with complex mountings.
- Hitachi WR22SA - electric professional wrench, capable of working with fasteners of various diameters. The start key switches the direction of rotation of the nozzle.
Advantages and disadvantages
Studying the detailed characteristics of impact wrenches, it becomes clear that there are several modifications of these tools on the market. Each model has its own specific advantages and disadvantages, which everyone should also know about.
Electric wrenches are in higher demand. Their main advantages are low noise level, high power of the rotating element, affordable price and high efficiency.
In addition to its advantages, the electric tool has several disadvantages.
- During operation, the impact wrench gets very hot, especially in the summer, when the sun is shining brightly. Of course, a cooling fan is provided in the system of the device, but, unfortunately, it does not cope with its work in all models. It follows from this that long-term use of the electric impact wrench is prohibited. The instrument must be allowed to cool down.
- Electric models are of limited scope. They should never be used in a humid environment or outdoors during rain.
Cordless wrenches are mainly used for household tasks. They are autonomous, emit a low noise level during operation, have a smooth adjustment mechanism and are very useful at home.
Despite the impressive list of advantages, battery models have several disadvantages.
- This device will not be able to help a person to perform a large amount of work. The resource of such tools is designed for minimal activity. And all because of the weight of the battery. This does not mean that the wrench has a large mass, it is just that a person will quickly begin to experience a feeling of discomfort and strong tension in his hand. That is why, for long-term work, manufacturers have developed separate models that are much lighter and more comfortable in the hand.
- Almost every owner of a cordless wrench has another battery in stock, but not always a quality product is offered on the market. Quite often, a purchased battery has a low charge reserve, although a different figure is indicated on the package.
Hydraulic wrenches are produced by several manufacturers and this is quite enough for this type of tool, since their full use is carried out exclusively on a production scale. From the technical point of view, they have high power, are able to unscrew even rusty fasteners, are resistant to moisture and water ingress, and have a smooth clamping adjustment.
The only drawback is the price. But for everyday life, hydraulic wrenches are not suitable in any way.
Pneumatic impact wrenches are similar in appearance to electric models, with a number of additional advantages. The power output of a pneumatic tool is several times higher than the power of an electrical device. The body of the air impact wrench is much lighter and the internal mechanism has high performance. The advantages also include the cost of the device.
The only drawback is the need to connect to a compressor, the operation of which is audible for a dozen meters.
Which nutrunner is better electric or pneumatic?
To increase the efficiency and durability of the joints, special devices are used, the choice of the model of the nutrunner depends on the type of work performed. Which nutrunner is better electric or pneumatic depends on the tasks and goals facing the master. Each type of unit has its own pros and cons.
- Electric models operate on a 220 V network, differ in power and ease of use. Their advantages are considered to be low noise level during operation, acceptable cost and high efficiency.
- Pneumatic models work where the use of electric impact wrenches is unacceptable due to high humidity or lack of a network.Such devices are convenient to use and are not afraid of overheating, their advantages can be considered autonomy and the ability to adjust power.
Popular models
In the modern world, the production of impact wrenches does not stand still. Every year, a variety of models are born, each of which has unique features. Based on the manufacturer's data for each individual tool and user surveys, a rating of the most popular wrench models has been compiled. The most popular electric impact wrench is Zubr ZGUE-350. This device is in high demand among service station owners and ordinary car enthusiasts. The price of the tool is very reasonable and does not affect the family budget in any way. Its power is 300 Nm, while the power consumption is 350 W.
An important feature of "Bison ZGUE-350" is a five-year warranty from the manufacturer, which also speaks of the high quality of the device.
The most demanded pneumatic impact wrench is Fubag IW 720 100192. It is mainly used in service stations and tire shops. Simple and easy to use. The price is reasonable, due to which any entrepreneur can purchase a device for the workflow. Many users praise the Fubag IW 720 100192 for the convenient adjustment of the tightening torque.
Works perfectly in any environment. The comfortable handle is equipped with additional vibration isolation, due to which the recoil of the tool is practically not felt. An important feature of this model is the torque output, which reaches 720 Nm. These figures indicate the possibility of using "Fubag IW 720 100192" both in a passenger car and in a truck.
The most popular angle wrench is Makita tl065dz. Its compact size allows you to carry out various types of work in the most difficult to reach places. For the convenience of the user, a special lighting lamp is installed on the body of this model.
Its weight is 1.5 kg, this device can easily unscrew and tighten nuts and bolts up to the size of M12.
