What kind of compressor is needed for a pneumatic tool wrench

How to choose a compressor for pneumatic tools?

The compressor is a must for most air tool models. Such equipment is used both in private households and in specialized workshops. There is also a separate category of industrial equipment, whose representatives also require the connection of compressors. The variety of pneumatic units makes it difficult to select additional components, however, provided the correct equipment is used, the user can count on a quality result in the process. The question of how to choose a compressor for a pneumatic tool, of course, primarily involves a mention of functionality, reliability and durability. But even compliance with these characteristics does not always provide the expected effect from the use of the tool..

Dimensions and design features

kind, compressor, needed, pneumatic

In addition to technical and operational indicators, it is important to take into account characteristics such as mobility and size. For example, if you intend to work with a spray gun for painting a fence, then you should turn to lightweight and ergonomic devices. Even if they provide a minimum level of performance, it is more likely to be sufficient for simple operations. These models include, in particular, the coaxial compressor for pneumatic tools. The choice in this direction can be guided by oil-free equipment, which does not have a receiver at all, but wins in compactness. If you need a powerful and efficient compressor with a massive casing, then it is recommended to purchase models equipped with comfortable handles and wheels..

What kind of compressor should you prefer??

Segmentation of compressors by type depending on the design also helps to make the right choice for inexperienced users. Models that are marketed as automobiles are suitable for most household needs – from painting surfaces to inflating rubber mattresses. A piston unit, which is used by workers in workshops and ordinary car owners, can also be a win-win solution. If the question is about which compressor is needed for professional pneumatic tools, then you should pay attention to screw and belt models. Such devices usually have high power ratings and pressure levels..

Additional equipment – what to consider?

Buying just one compressor does not mean that the connection to the instrument will be properly set up, and the work will be done well. The technical organization of the process often involves the use of special hoses, adapters and clamps. As practice shows, even a lightweight pneumatic tool, when connected to a compressor, requires the use of clamps with suitable dimensions. Personal protective equipment should not be ignored either. If the compressor for the pneumatic tool will spray abrasive materials, then you must take care of protective headphones, gloves and goggles. To work with paints and varnishes, it is also recommended to purchase a jumpsuit that will provide protection against chemically hazardous substances..

Basic selection parameters

An experienced technician evaluates compressors according to three main characteristics, including pressure level, capacity and receiver volume. For the first criterion, the starting point is 6 bar. This is the minimum pressure that a compressor has for a pneumatic tool designed to perform simple household operations. Models with a pressure level of 10-15 bar are also common. This equipment is capable of working with more demanding units, including those from the industrial sector..

Compressor capacity is expressed in liters of working mixture sprayed per minute. So, for small-scale painting activities, 10-50 l / min is enough. But this range can be extended to 500 l / min when it comes to the use of equipment in the workshop. The volume with which a compressor for pneumatic tools for household use works is on average 7-10 liters. Of course, there are more spacious receivers, but they are mostly used in highly specialized areas..

Compressor manufacturers

Almost every manufacturer of construction or industrial equipment includes compressors in the line for different purposes. If we talk about domestic companies working in this direction, then Caliber and Elitech come to the fore. The products of these brands may not always be able to compete with the best foreign models, but for the price it is the most profitable acquisition. However, the question of how to choose a compressor for pneumatic tools with a high level of quality should be solved with the help of foreign products. The assortment in this segment is quite wide, however, the brands Fubag, Metabo, Senco and others are the most trusted by specialists..

Oil-free and oil-free

In oil compressors, there is a crankcase with a lubricating liquid, which increases the engine’s service life, and also has a lubricating effect in the direct consumer, be it a wrench, impact wrench, grinder, polisher, screwdriver, etc. The same effect has a negative effect when using a spray gun, when oil particles can get into the spray gun and reduce the quality of painting (it is solved by installing additional filters in the pneumatic line in front of the spray gun). Accordingly, like any equipment using oil, this type of compressor requires additional maintenance, monitoring and timely oil change. Most of the compressors used in a car wash or service station are oil.

Oil-free compressors are easier to maintain and are usually used for personal needs in garages, or for hobbies. The resource of oil-free compressors, as a rule, is 2-3 times lower than oil compressors and the operating mode assumes the use of the compressor no more than 10-15 minutes per hour.

How to choose a compressor, a rating of the best manufacturers


The device from the manufacturer from Germany is confidently included in the rating of the best compressors. It is a set of the most popular pneumatic tools that are required for auto maintenance and home repairs. On the official website on the Internet there are 2 variations of the kits: for 6 and 10 units. The smallest set includes:

  • 3 pneumatic guns with nozzles – for inflating tires, blowing or washing;
  • 3 tips for inflating balls, bicycle wheels and mattresses;
  • flexible five-meter hose;
  • spray gun with a tank of 500 g.

Regarding the device itself, it should be noted that with a rather small size, it differs in power. Made of high-quality material, ergonomics are carefully thought out: manometers are easy to read, have accurate readings, craters are located comfortably. The disadvantage is the small length of the power cable and a strange instruction, which includes information about several products at once, however, taking into account the cost and rich set of equipment, the disadvantages are insignificant.


  • sufficient power;
  • high-quality assembly;
  • a wide range of works;
  • simple interface;
  • adequate price.


  • short cable;
  • strange instruction.

The best inexpensive compressors (household)

Domestic air compressors are used for minor repairs, car maintenance or various pneumatic tools. Distinctive features of the equipment “for summer cottages and garage” are low productivity, compact dimensions and light weight. They are rarely designed to connect serious devices, for example, anticorrosive devices. The maximum volume of the receiver of the household unit – up to 50 liters.

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Important: According to experts, “home” equipment is suitable not only for private use, but also for rare work in a production environment..

Below are four of the best air compressor models that you can safely take for your personal use. The quality of workmanship and reliability are guaranteed by the manufacturers and have been checked by the masters more than once. If you are wondering which one is better, pay attention to their characteristics and area of ​​use..

Best air compressors price – quality combination

The optimal combination of price and quality is a “semi-professional” class equipment, affordable for finance. The equipment is devoid of the disadvantages inherent in household models of compressors, it has increased productivity and a higher build quality. The area of ​​use is wider than that of “household” ones, in addition to blowing and servicing cars, they are suitable for painting cars, applying light plasters, and various types of tools. In operation, this technique is more comfortable, the compressors work more stable and quieter, there is no need for regular maintenance and “fitting” parts.

Receiver volume

An important parameter is the volume of the receiver. It must be commensurate with the characteristics of the apparatus itself. The smaller the tank, the faster it will fill, but the risk of pressure surges increases..

The larger the capacity, the situation changes in the opposite direction. For household appliances, a receiver of more than 50 liters is impractical to buy.

Noise level is subject to attention. The smaller it is, the better. The noise often reaches 86 dB. Thanks to different soundproofing materials, it is possible to reduce this indicator to 68 dB.


The fundamental quantity is power. It is measured in kW. The more powerful the motor is selected, the higher will (should be) the pressure and performance. It can be roughly determined by multiplying the input energy consumption (kW) by the efficiency.

Which compressor to choose for painting?

In order to avoid overpayments, given that air compressors are not the cheapest equipment, their choice is based on the class of the planned painting, or, more simply, on the quality of the work performed..

For a simple touch-up of a car or any small part with a spray gun, the cheapest single-cylinder piston oil compressor with a 25-liter receiver, a capacity of about 130 l / min and a maximum pressure of 8 atm is suitable.

A compressor with similar characteristics is quite suitable for training..

Skillful work will require more serious units, which, in fact, will affect their cost.

Suitable oil piston units with one or two pistons, a receiver with a volume of 50 – 100 liters, a pressure of 8 – 10 atmospheres and a productivity of about 330 l / min.

Options with similar characteristics are able to cope with a larger-scale work, for example, if you want to paint the entire side of the car, or make the painting a transition.

With prolonged use, they will probably get very hot, which makes them unsuitable for full painting of a car..

Professional painting works require equipment of a completely different design and price range..

We are talking about oil belt models with a capacity of more than 500 l / min, a pressure of 10 atm and a standard receiver capacity of at least 200 liters..

Therefore, the choice should be made taking into account these characteristics..

Such a compressor is very difficult to overload, and therefore it is suitable for painting work of almost any volume..

We should also mention the work with an airbrush, since for this lesson, specialized compressors of compact sizes have long been produced..

Their productivity is on average 23 l / min, power is 150 W, pressure is 4 atmospheres, and with the possibility of adjustment.

Similar models are produced with or without a receiver..

Choosing a car compressor

The very concept of “automobile compressor” means that this equipment is primarily used for full pumping and partial pumping of vehicle wheels..

This is a compact electrical appliance that does not take up much space in the trunk..

To choose a compressor for a car, it is important to pay attention to the following nuances:

  • Food. There are two options: from the cigarette lighter or by connecting directly to the battery terminals. The first method is more convenient, but the second will not damage the wiring of the car when powering a powerful device. Typically, higher power models are only connected to the battery terminals. There are also combined options.
  • Power cord length. For inflation of passenger car tires, it is desirable that this indicator be at least 3 m.Otherwise, the length will have to be increased.
  • A digital pressure gauge is much faster and more accurate than a dial gauge, but also more expensive.
  • The presence of tips for inflatable products will allow the use of a car compressor not only for its intended purpose, but also for pumping inflatable toys, for example, balls, to a certain pressure.
  • Piston and diaphragm compressors are produced for the car. The former are distinguished by high performance and discharge pressure, but the latter are more compact and have a long resource..

Piston models are always preferable, since diaphragm devices do not tolerate subzero temperatures.

As for the pressure, for most car compressors this figure is 10 atm..

To be able to work with tires of SUVs and small trucks, attention should be paid to two-piston models with a capacity of at least 70 l / min and a power of 350 W.

A built-in flashlight, as an additional option, can be useful not only on the road, but also in other cases, for example, in the garage, when the power goes out.

Those. when choosing a particular model, it is preferable to have one that has extended functionality and additional attachments in the kit.

For professionals dealing with tire works, or just for a garage, an automobile compressor is not suitable.

Here you need to look towards productive full-size models..

Compressor selection for professional use

A professional pneumatic tool requires a powerful compressor capable of supplying all consumers with compressed air for a long time without interruption in accordance with the flow rate.

The same cargo wrenches require over 1100 liters of air per minute, compressed to 8 atmospheres, and with the use of additional receivers, the number of connected tools can be increased, if only the productivity allows.

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In professional activities, for example, in repair shops or tire changers, long-term operation of the compressor without interruption is important..

The following 2 types of equipment are common here:

  • Reciprocating belt compressors – have a high efficiency and increased resource due to the fact that the head operates at a lower frequency than the engine. In addition, the flywheel cools the head, preventing overheating, but this design is very noisy in operation..
  • Screw – they practically do not make noise, have high performance, and most importantly, they are able to operate around the clock, which makes them in demand in the professional field.

Using a pneumatic tool, care should be taken that the compressor capacity is higher than the air consumption of the most productive consumer, or the sum of the simultaneously operating.

Real performance is the product of efficiency and input performance specified in the data sheet.

The efficiency of the screw versions is 0.95, and of the belt piston – 0.75.

When choosing a compressor for a pneumatic tool, for example, a wrench, it is important to remember that its working pressure should be less than the pressure when the unit is turned on..

Otherwise, frequent downtime is guaranteed, even with a continuously running pump..

Information about the working pressure is recorded in the passport for the tool, and the sandblasting indicates its range.

As for the size of the receiver, it is better to choose options with as much volume as possible..

The fact is that capacious cylinders reduce the pulsation of air pressure..

For industrial use, a minimum volume of 270 liters is required.

Which compressor should you choose? Compressor selection for car, home and painting

The proliferation of pneumatic tools has led to the emergence of a huge number of air compressor models on the market.

Some of them are intended for use in everyday life, while others are specially designed for long-term operation in difficult conditions..

The choice of a compressor should begin with a study of the types and technical characteristics of this unit..

It is important to understand that universal equipment does not exist. Some models are suitable exclusively for inflating the wheels of a passenger car, while others are capable of feeding a pneumatic tool, while buying more powerful options for rare home use does not make sense.

Before choosing the “suitable” equipment, it is important to determine for which tasks it should be suitable.

Choosing a compressor for your home

Compressor for home use should have, above all, an affordable cost..

The difference between such models from professional ones lies in their short and infrequent use in conjunction with an appropriate pneumatic tool, such as a nailing or frame gun, drills, wrenches, and so on..


At the same time, the leading positions here are occupied by piston electric models with a capacity of 2 – 3 kW..

For domestic needs, an 8-10-atmospheric unit with a capacity of no more than 300 – 350 liters per minute will be enough.

These figures will even be in abundance, since a household-class pneumatic tool is designed for a pressure of 6 – 7 atmospheres with a flow rate of 50 – 200 l / min, but a margin of performance is always required.

As for the receiver, for household needs it is enough to choose models with a built-in storage volume of 50 – 100 liters..

If you plan to work with a tool that has a low air consumption, such as a riveter or small wrench, a 25-liter air reservoir is sufficient..

What is important when choosing a compressor?

When choosing a compressor for any task, it is important to pay attention to the following criteria:

  • Engine – for work in a workshop, it makes sense to purchase devices with an electric motor, since they are more economical. If it is possible to connect to a 380 V three-phase mowing line, it is better to use it, since with high equipment power this will reduce the load on the network as a whole. Such compressors already belong to the professional class, which is reflected in their cost. For household work and small workshops, 220 V options are definitely suitable.

It makes sense to choose a gasoline device only for frequent use in the field, i.e. where there is no electricity.

  • Power – represents the total potential of the compressor, which directly depends on the engine power. Due to the friction and loads arising during operation, part of the power is lost, therefore the real working value will actually be higher than that indicated in the passport.
  • Pressure – Indicated in atmospheres or Bars. One of the main values, on the basis of which the device is selected for a specific consumer (instrument). For variants with receivers, the maximum pressure and starting pressure are of importance, which is lower than the upper one, as a rule, by 2 atm. You should focus on him.
  • Capacity is a value that indicates the volume of air that the compressor is capable of delivering per minute. The indicator strongly depends on the temperature of the air mass, therefore the equipment should be selected with a margin of about 50% of the required.

In the passport of the compressor unit, the inlet capacity is indicated, that is, the volume of intake air, and the measurement is carried out at a temperature of 20 ° C.

  • Receiver – not only accumulates air mass under pressure, but also significantly reduces fluctuations in outlet pressure, allows the engine and the pump itself to periodically perform a “rest” stop. The larger its volume, the better, but the receiver itself is not always needed.
  • Continuous operation time – actually indicates how much equipment is capable of operating before overheating. Depends heavily on design and availability of cooling. For example, oil-free piston coaxial variants are physically unable to work for a long time, therefore they are not suitable for professional activities..
  • Noise level – measured in decibels, in some cases it does not matter, in others it is one of the main parameters by which equipment is selected.
  • Dimensions – determine the ease of movement of the equipment. Dimensions increase with the presence of a built-in receiver. Car compressors are always compact..
  • .
  • Warranty – will allow you to solve the problems that have arisen with the compressor free of charge, but it all depends on the type of equipment and the manufacturer itself. For example, Assure offers a 6-year or 44,000-hour warranty on its devices, whichever comes first..
  • Service. During the operation of the equipment, breakdowns are possible, and therefore it is necessary to make sure that there is a service center nearby.
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When buying a compressor, be sure to make sure it is complete. We are talking about the presence of all adapters, nozzles, rubber feet, if any, provided by the complete set.

What compressor is needed for a wrench?

The main purpose of the nutrunner is screwing and unscrewing any fasteners. A similar tool can be found in a modern auto repair shop offering tire fitting services, or in the suitcase of a specialist in various types of installation. Complete with a compressor, a wrench will significantly save operating time and reduce power costs.

Make sure the kit is effective:

  • instant loosening / tightening of bolts and nuts,
  • increased operator efficiency due to high compressor power,
  • wide range of applications: used where conventional wrenches and electric wrenches are powerless; quickly unscrew the rusted and tightly “stuck” nut.

Design and principle of operation

The wrench compressor consists of a practical housing and a double-acting pneumatic cylinder. The body is equipped with a power lever with a square sonnet, which is necessary for installing interchangeable heads.
The compressor compresses the gases and supplies air under pressure to the wrench, making it work.

Types and purpose of the compressor for the wrench

A compressor for a wrench or other pneumatic tool must be suitable for the purposes of future use. Depending on the purpose, there are the following types:

  • Reciprocating compressors for a wrench are the best option for a garage. The compact model is suitable for servicing your car.
  • Oil-free reciprocating compressors – installing a fence, fence or building facade are just a few of the tasks they can handle perfectly.
  • Belt Compressors — Designed for long and hard work. Compressor endowed with a long service life thanks to the engine cooling system.
  • Screw units – accurate and meticulous work – their strong point. Compressors like these deliver clean air and high performance..

When choosing a compressor for a wrench, it is important to consider:

  • Torque indicator.
  • Idling speed (selected depending on the required intensity of work).
  • Fit Size (for Fitting Impact Sockets).
  • Length of the working shaft of the tool.
  • Air consumption (depending on the available compressor).
  • Machine weight.
  • Type of shell.

Another indicator that you should pay attention to when buying a compressor is performance, that is, the amount of air that the device is able to compress in 1 minute. It depends on how efficiently the pneumatic tool will work..

We recommend choosing models whose performance is 2 times higher than the wrench can spend. If the tool needs 100 liters of compressed air to work, the compressor should supply about 200 liters.

It is also important if the compressor has a cooling element. The case heats up during compression and the device may need to take a break. The presence of a cooling system will allow the compressor to work for a long time without rest.

How it works

No special skills are required from the user. In some cases, it is easier to work with pneumatic tools. At high power, they weigh little (the absence of an electric motor affects). Their compactness is appreciated when used in hard-to-reach places.

The design is based on a pneumatic motor, in which the energy of compressed air is converted into the mechanical work of a piston machine. From it, the movement is transferred to the gearbox, and then to the spindle.

In most cases, pneumatic tools are professional. Pneumatic tools are used in car services, industrial plants, carpentry and locksmith shops. Since they are designed for intensive work, their internal parts are made of high quality steel, with high requirements for manufacturing accuracy..

Pneumatic tool

  • Robust case – resistance to mechanical damage

Pressure: 8.5 atm

Air consumption: 200 l / min

Air Fitting Diameter: 1 / 4F in

Connection type: rapid (EURO)

Spout length: 25mm

  • A rich package expands the capabilities of the tool

Pressure: 6.3 atm

Air consumption: 142.5 l / min

Max torque: 720 Nm

Chuck size: 1/2 inch

Chuck type: square with friction ring

Impact presence: yes

Bucket capacity: 4 l

Air consumption: 350 l / min

Working pressure: 10 atm

Connector type: rapid (EURO)

Pressure: 6.2 atm

Air consumption: 480 l / min

Max torque: 624 Nm

Chuck size: 1/2 inch

Chuck type: square with friction ring

Impact presence: yes

Pressure: 6.3 atm

Air consumption: 140 l / min

Supercharge your air compressor tools for cheap – Working Pressure & Air tool setup

Max torque: 68 Nm

Landing square: 1/2 inch inch

Air Fitting Diameter: 1 / 4F in

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Speed: 160 rpm

Max fastener size, M: 10

  • Extra long nozzle for blowing out in hard-to-reach areas

Pressure: 8.5 atm

Air consumption: 200 l / min

Air Fitting Diameter: 1 / 4F in

Connection type: rapid (EURO)

Spout length: 170mm

Nozzle diameter: 1.3mm

Air consumption: 109 l / min

Spray method of paintwork materials: LVLP

Air Connection Diameter: 1 / 4M Inch

  • Rubberized body – secure grip for comfortable work

Collet size: 6mm

Pressure: 6.3 atm

Air consumption: 86 l / min

Speed: 27000 rpm

Air Fitting Diameter: 1 / 4F in

  • High wear resistance: parts are heat treated

Pressure: 6.3 atm

Air consumption: 80 l / min

Impact frequency: 4500 bpm

Impact force: 5 J

Air Fitting Diameter: 1 / 4F in

Pressure: 10 atm

Air consumption: 400 l / min

Air Fitting Diameter: 1 / 4F in

Connection type: rapid (EURO)

Spout length: 200mm

All pneumatic tools run on compressed air. The stream is fed through a rubber hose that is connected to the tool nipple. The principle of operation is the same as with electric models.

Pneumatic system

To supply compressed air, use: a compressor with a receiver and filters for cleaning, lubricators, pipes, hoses. Each pneumatic tool is characterized by air flow and working pressure. These two parameters are important for choosing the main element of the system. compressor. Its performance should be twice the demand for air, the consumers connected to it..

Benefits of pneumatic tools

  • overload resistant;
  • there is no danger of jamming;
  • higher level for fire and electrical safety;
  • can be used in high humidity and dusty conditions;
  • low weight of equipment – less employee fatigue;
  • long period of continuous operation.

VseInstrumenty.ru will help you purchase pneumatic tools for car service and construction from Metabo, Festool, Sorokin and other manufacturers. Optimal price-quality ratio!