Pneumatic equipment cannot be imagined without a compressor. When buying, for example, a nail gun, you should immediately think about what kind of compressor you need for it. Compressors can be conditionally divided into household and professional. Separation occurs depending on the area of ​​​​its application, wear resistance and performance, respectively, the former will be cheaper, and the latter more powerful.

Compressor selection steps:

Compressor type selection

PISTON COMPRESSORS

AT oil-free coaxial compressors The piston group is made from special materials that allow minimizing the coefficient of friction. The design of the direct drive is extremely simple, which allows you to achieve a low cost of the compressor. As for the pros: they give clean air at the outlet and are very affordable. The disadvantages include unpreparedness for long-term loads and a limited resource.

AT oil coaxial compressors all internal parts of the piston group are lubricated with oil. This creates a film between moving parts to prevent direct contact. metal parts together. The advantages include good performance and ease of operation and maintenance. The disadvantages are: the need to maintain the oil level and intended for intermittent rather than continuous use.

AT belt compressors a belt drive is used from an electric motor to a pulley that rotates the flywheel of the compressor head. The flywheel allows the compressor head to operate at a lower frequency than the engine, which increases its life. The flywheel is also used to air cool the compressor head during operation. From pluses increased resource and high efficiency. To cons can be attributed to the extremely high noise level during operation.

Principle of operation

SCREW COMPRESSORS

Air is pumped in series - by means of a screw pair, which rotates in an oil reservoir. This ensures a low coefficient of friction and efficient heat dissipation from working area. The oil wedge creates excellent conditions for air compression. pros of this compressor — ensuring the round-the-clock mode of operation, high efficiency, low noise level. Main minus high price.

Principle of operation	Fubag Legend 7.5/10-200 DOL

Calculation of the required performance

AT general view The formula for selecting a compressor looks like this:

Air consumption tool * 1.2< Производительность компрессора

Tool Air Consumption= Consumption of liters of air per 1 shot * number of shots per minute.

The number of shots per minute in practice is less than 20. For staplers and drum pistols in production, it is recommended to take into account 30-40.

The air flow is taken as either the maximum per minute that may be required. Or by the most productive tool, or by the amount of tools, if you plan to use several from one compressor at the same time.

Compressor performance\u003d Passport performance at the input * Efficiency.

The compressor passport usually indicates the inlet capacity. This value must be multiplied by the efficiency.

• For reciprocating coaxial compressors efficiency ~ 0.65;
• For piston belt compressors efficiency ~ 0.75;
• For screw compressors efficiency ~ 0.95.

The performance of the compressor must be higher than the performance of the pneumatic tool.

Determining the required operating pressure

Having pumped air up to the maximum working pressure (Pmax), the compressor is switched off. The restart occurs after the pressure drops to the cut-in pressure (Pmin). The difference between Pmax and Pmin is usually 2 bars. That is, for compressors with Pmax = 8 and 10 bar, Pmin, as a rule, is 6 and 8 bar, respectively.

Pmin= Pmax - 2 bar

Compressor Pmin should be higher required pressure for pneumatic tools. The pressure required for normal operation is indicated in the pneumatic tool passport.

Receiver size selection

One of the main functions of the receiver is to reduce the frequency of compressor restarts and allow time for the compressor head to cool down.

Coaxial compressors usually have receivers with a volume of 24/50 liters, belt compressors - 50/100 liters. Powerful belt compressors used in production have 270/500 l receivers. If possible, it is preferable to choose a larger receiver volume. The larger volume receiver better reduces air pressure pulsation, allows it to withstand large peak loads, and makes the air supply system more flexible to different regimes work.

If possible, you should choose a larger receiver (with a margin).

Gone are the days when the use of pneumatic tools was the prerogative of factories and large workshops at car depots. Today, pneumatic tools are available to anyone and many have already appreciated its positive aspects. The pneumatic tool is not afraid of moisture and dust, unpretentious, reliable and has a noticeably greater power density than its electric cousins. In addition, the pneumatic tool is not afraid of extreme loads - if the electric drill can easily burn out when the drill is jammed, the pneumatic drill will simply stop and start as soon as the load disappears. It is not surprising that pneumatic tools have more and more fans every year. But pneumatic tools also have a minus: an outlet can be found on every corner, but compressed air is not yet distributed to apartments, garages and private houses. You need to buy a compressor.

Most effective view compressors is screw, in which air is forced by screws. But, unfortunately, the pressure necessary for the operation of the pneumatic tool is created only when working with large screws driven by powerful three-phase motors. That's why screw compressors used in large industrial enterprises, and private individuals and small workshops have to be content with piston ones.

In these compressors, air is compressed, as the name suggests, by pistons driven by a crank mechanism. The efficiency of such compressors is much lower due to the fact that most of energy is spent to overcome the friction between the piston and the cylinder. Accordingly, the wear of these parts also increases and the service life of reciprocating compressors is much lower than that of screw compressors. Oil compressors use oil to reduce friction, such compressors last several times longer than oil-free ones, but they have one feature that often turns into a big drawback: the compressed air at the outlet of oil compressors is quite in large numbers oil is present.

Oil separators partially solve this problem, but not completely, and if you need clean air, an oil compressor will not suit you. This is true not only for medical institutions. At fine work spray gun (for example, when the spray gun is used for airbrushing), when blowing dust off parts, when using a plasma cutter - the presence of oil in the compressed air is unacceptable. But when working with other pneumatic tools - drills, wrenches, engravers, etc. – the presence of oil in the air is even useful: it provides lubrication to the rotating parts of the tool.

Another disadvantage of oil compressors is that they require monitoring of the level and condition of the oil. Oil needs to be added (any oil will not work here, it requires an expensive compressor oil), and if it is dirty, change it.

According to the type of drive, compressors are divided into coaxial and belt. In coaxial compressor crankshaft is rigidly connected to the motor shaft. The simplicity of this design ensures its low cost, which cannot be said about reliability: this option is fraught with frequent peak loads on the engine, which adversely affects its durability. In belt compressors, the engine, with the help of a belt drive, spins the flywheel, on the axis of which the crankshaft is fixed. This design provides more soft work engine, extending its service life.

Who needs a compressor?
Anyone who needs one or another pneumatic tool in their work:
- auto repair workers
- employees of workshops for the repair of household appliances
- employees of paint shops
- builders and fitters
- painters and decorators

And if you have a garage and you do some work on the car yourself, then either you already have a compressor and pneumatic tools, or you just don’t know how much their presence will make your work easier.

Characteristics of compressors.

Whether you purchase a belt or coaxial, oil or oil free compressor, they all have some General characteristics that you need to pay close attention to before buying:

Power. The higher the motor power, the higher the performance, and, accordingly, the more consumers can be connected to the compressor and the more diverse they are. How to choose power? It is better to select it not directly, but according to the required performance and maximum pressure. The same parameters are selected based on which tools and in what quantity will be used simultaneously with the compressor.

Pneumotool and compressor parameters required for it.

Compressor performance is the volume of air it gives out per minute. To determine the capacity of the compressor, sum the required capacity of all simultaneously operating tools. When choosing a compressor, it must be borne in mind that the passport usually indicates the amount of intake air in ideal (20 degrees Celsius) conditions. At the compressor outlet, due to air losses in the compressor and due to different operating conditions, the performance may be 20-30% lower than the declared one. Therefore, the performance of the selected compressor should be 30% higher than required for the operation of existing tools.

Pressure. The operating pressure of the compressor is also selected based on the requirements of the tool used. It does not matter how many instruments will be used at the same time - choose the maximum required pressure. This will be the operating pressure of the compressor. For some tools (e.g. spray guns, blow guns, tire inflators) overpressure contraindicated. If such a tool is to be used, it would be desirable to have pressure adjustment. Availability manometer will be useful in any case - it will make sure that the compressor is really working and creating the required pressure.

Receiver volume. A receiver is a metal tank that serves to store some stock compressed air. The larger the volume of the receiver, the less often the compressor will turn on, i.e. increasing the volume of the receiver reduces the load on the compressor and engine. The downside of a large receiver is that it takes some time for the compressor to build up working pressure in it. If the compressor power is low, and even the pressure is taken off by some working tool, the pressure in the large receiver (and therefore at the compressor outlet) can take a very long time to build up. Therefore, an increase in the volume of the receiver should be accompanied by a corresponding increase in performance and power. An exception is the case when the compressor is periodically required to have a short but high performance: for example, when using an impact wrench. It requires a capacity of 300 l / m, but if you connect it to a compressor with a capacity of 200 l / m with a large (50 l) receiver, this will be enough to start the wrench and work for a while.

Availability on the compressor overheating protection also highly desirable. No reciprocating compressor can run continuously for long periods of time. The presence of a receiver of the appropriate volume gives the compressor the opportunity to periodically "rest" for cooling, but if the air intake is close to the compressor's capacity, then the breaks between switching on become too short and the compressor does not have time to cool down. If the air intake exceeds the compressor capacity, the engine will not turn off at all. This can lead to overheating of the compressor and its failure. That is why the compressor must always have a performance margin.

The weight compressor is quite significant - up to 100 kilograms! If the compressor is supposed to be installed permanently and connected to the main (for example, in a garage), then the weight is not so important. But if the compressor is supposed to be used in different places, and its mobility is necessary, it is worth making a choice towards a lighter model. Or at least equipped wheels.

Compressors are one of the noisiest types of electrical equipment. Even if your compressor will be used in production, remember that prolonged human exposure to noise above 80 dB is harmful. If the compressor is supposed to be used near housing, all the more care should be taken to select a model with a smaller noise level.

The compressor is a mandatory component for most models of pneumatic tools. Such equipment is used both in the private sector and in specialized workshops. There is also a separate category industrial equipment, whose representatives also require the connection of compressors. A variety of pneumatic units makes it difficult to choose additional components, however, with the right equipment, the user can count on a quality result in the process. The question of how to choose a compressor for pneumatic tools, of course, first of all involves mentioning functionality, reliability and durability. But even compliance with these characteristics does not always provide the expected effect from using the tool.

Basic selection options

An experienced craftsman evaluates compressors according to three main characteristics, including pressure level, performance and receiver volume. As for the first criterion, the initial indicator is 6 bar. it minimum value pressure, which has a compressor for pneumatic tools, designed to perform simple household operations. Models with a pressure level of 10-15 bar are also common. This equipment able to work with more demanding units, including those from the industrial sector.

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

Which one do you prefer?

Segmentation of compressors by type, depending on the design, also helps to make the right choice for inexperienced users. Models that are positioned as automotive are suitable for most household needs - from painting surfaces to inflating rubber mattresses. A win-win solution can also be a piston unit, which is used by both workers in workshops and ordinary car owners. If there is a question 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.

Dimensions and design features

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

Additional equipment - what to consider?

Buying a compressor alone does not mean that the connection to the tool will be correctly configured, and the work will be done well. Technical organization process often involves the use of special hoses, adapters and clamps. As practice shows, even lightweight pneumatic tools, when connected to a compressor, require the use of clamps with suitable sizes. Do not ignore the means personal protection. If the compressor for pneumatic tools will provide spraying of abrasive materials, then you need to take care of protective headphones, gloves and goggles. To work with paints and varnishes it is also recommended to purchase a coverall that will provide protection from chemically hazardous substances.

Compressor manufacturers

Almost every manufacturer of construction or industrial equipment contains compressors for for various 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 this is the most profitable purchase. However, the question of how to choose a compressor for pneumatic tools with high level quality, should be addressed with the help of foreign products. The range in this segment is quite wide, however, Fubag, Metabo, Senco and others are the most trusted brands.

Conclusion

According to user reviews, during the operation of compressors, subtle nuances in the characteristics of the equipment that were not taken into account when purchasing often pop up. These include, for example, energy consumption. If you choose a compressor for pneumatic tools with plans for regular use, then it will not be superfluous to take into account these criteria. In addition, the long-term use of such equipment is only possible with proper maintenance. Even if a model is purchased from a well-known company of the Fubag level, you should not place high hopes on the working life of the compressor. Still, the function of a pneumatic tool has a serious impact on the technical life of the equipment used, therefore, regular oil changes and compliance with the operating rules are indispensable.

In connecting elements, the shear load plays an important role. And now we will consider who is better able to withstand this type of load.

The nail is made from cold-rolled wire by cutting. A self-tapping screw is a threaded rod that has been hardened. If you screw in a self-tapping screw and leave it sticking out about 1 cm, and drive in a nail using the same technology. And strike, then the self-tapping screw will break, and the nail will bend. From this we can conclude that the nail can withstand a large load on the cut.

And, accordingly, many other models, so PASLODE CR175C he has enough battery for 2200 shots, and a standard gas cylinder for 1000 shots.

PASLODE IM 350PLUS frame, has a reinforced battery, which gives it the ability to hit about 4000 times on a single charge.

Distinguished into two types network– powered by an electrical outlet, and rechargeable- which are battery operated.

The advantages of electric pistols include:

• Small dimensions of network representatives.
• Mobility and autonomy of battery representatives.
• Noiselessness.
• No exhaust gases.
• Small weight up to 3 kg.

The disadvantages include:

• Despite its characteristics, high cost.
• There are size restrictions consumable.
• Do not work in rooms with high humidity.
• The number of shots is 1 per second.

Next classification by type of consumables:

• nailers;
• hairpin;
• stapled.

Frame nailer.

Got wide application, use nails of large sizes up to 220 mm.

Used for building wooden structures, pallets, floors, rafters. Nail heads can be O-shaped and D-shaped.

Sheathing nailer.

Scope of application installation sheet materials(plywood, OSB boards).

Nails 25-75 mm long are used as consumables. and a cap width of about 7-8 mm.

Use a drum gun.

Drywall gun.

They are used in cases where wooden beam. Use rough nails, about 30-50 mm long. HVR41-ST, from MAX, it is also called a screwdriver, it is able to simultaneously screw in and drive a screw in 0.06 seconds.

Usage pneumatic equipment significantly increases the production capabilities of the enterprise, helps to reduce the cost of production. EnergoProf Group of Companies offers a diverse range of compressors for nailers of leading brands. The online store sells equipment at manufacturer prices. Our experts help clients with the choice of model with the necessary working pressure range.

Features of choosing a compressor for a nail gun

For nailers, professional compressors are used with a compressed air consumption of 30-300 l / min. Our catalog contains compressor equipment with a receiver on a wheeled chassis, which allows you to perform a large amount of work quickly and with minimum cost forces. Remeza, Fiac, Fubag equipment is successfully used by specialists in construction sites and repair work.

Advantages of the proposed compressors for nailer:

• smooth pressure adjustment;
• stable performance;
• low background noise;
• wear-resistant mechanism;
• ease of movement and connection;
• high resource.

The most commonly used for a nail gun are reciprocating compressors with "dry" and oil-filled working block. Oil-free installations have a limited resource and performance, therefore they are suitable for low loads. In models with an oil-filled piston mechanism, heat is removed faster, wear of parts is less. They are designed for higher loads, but require thorough air purification.

Head of sales department of compressor equipment

To buy an inexpensive compressor for a nailer, contact our office in Moscow at the specified phone number. You can also order additional accessories, pneumatic tools with a guarantee of high-quality service from us.