5 secrets when using a pneumatic impact wrench

The use of hand tools for the mechanization of plumbing work can significantly increase the speed of their execution.

Such devices are widely used in industry, construction, transport, repair plants in shipbuilding and mechanical engineering. They are also used in many tire shops and automotive technical centers to carry out maintenance and restore the functionality of mechanisms and assemblies.

Design and principle of operation

The impact wrench is a complex structure equipped with a handle for easy holding of the tool while performing work. This device contains the following elements, each of which performs specific functions:

• Frame .
  It is made of metal or polymers, and can be combined. Serves to combine parts and assemblies into a single mechanism and ensures their interaction. The most common are pistol-shaped cases with a handle on which the control key is located. There are impact wrenches in which the spindle is located perpendicular to the body to increase the length of the lever.
• The drive can be: electric, hydraulic, pneumatic or mechanical. The built-in motor develops torque and ensures rotation of the executive body.
• Gearbox . Designed to convert (increase) torque with a decrease in the speed of the driven shaft. Used in impact wrenches with high-speed engines.
• Spindle with chuck . The latter ensures reliable retention of the head during work. The rotation of the spindle, which is usually the output shaft of the gearbox, drives the chuck.

The delivery set of the impact wrench may include a set of heads of different sizes, stops, removable handles and other devices that make it easier to use.

The operating principle of the tool is as follows:

• A head of suitable size is installed in the chuck and carefully secured.
• The device is put on a bolt or nut.
• The operator selects the direction of spindle rotation using a switch to tighten or loosen the connection.
• Hold the impact wrench with one or two hands and press the start button, thereby starting the drive.

Rotation from the engine is transmitted through the gearbox to the spindle and then to the chuck with the head installed in it.

Purpose and functions

A wrench is a highly specialized hand tool used for loosening or tightening:

• Detachable threaded connections consisting of bolts (studs) and nuts.
• Anchors and anchor screws.
• Wood grouse.

In addition to basic operations, this device can perform a number of other functions:

• Tighten connections to the specified torque. It is used when fastening cylinder heads of internal combustion engines and when performing other operations.
• Loosening or tightening nuts using shock-pulse mode. Allows you to successfully disassemble stuck bolted joints without destroying parts. The reverse operation is performed when assembling critical components operating under heavy loads.

The described device always has a two-way action, which allows you to both unscrew and tighten threaded connections.

About the past and present of the instrument

The impact wrench is, of course, designed to tighten or unscrew threaded connections on nuts and bolts. Also, with this device you can unscrew wood grouse and anchor screws, and sometimes even options with adjustable torques. Most often you have to use a manual mechanical impact wrench in everyday life, because only a wasteful owner can buy super-technologies for household needs. In addition, such tools are still in demand when performing dismantling and installation work in many areas of industry.

Under certain conditions, the technical characteristics of a manual multiplier impact wrench are not inferior to hydraulic, pneumatic or electric tools . Someone is slowly wondering why we are talking about hand tools, but at the same time we mention both electricity and pneumatic options for the device. This category of mechanisms implies manual control, or rather the direction of action, and not the drive. A manual drive for unscrewing the nuts has, for example, a ring wrench. But the impact wrenches all work on mechanics, which are driven by various types of drive, but only a person can indicate what should be unscrewed with his own hands. Therefore, this play on words can be expected to confuse an inexperienced reader.

Standard (traditional, old-style) manual mechanical impact wrenches consist of elements such as a gear, a torsion shaft and a spindle. The torsion roller is designed to transmit torque from the spindle to the screw head. Some models of impact wrenches have a splined bushing that accommodates a spring-loaded and freely positioned cam. There is a shaped protrusion on the cam, and it is this that catches and forces another cam to rotate, which moves along the axis of the bushing, and it is also connected through a special rod to a gear, which, under certain conditions, can stop the work; it is at this moment that they talk about a locking mechanism. This design solution for manual mechanical impact wrenches not only helps increase productivity, but also significantly improves the quality of nut tightening.

How to choose

The effectiveness of using this type of hand tool depends on a number of factors and its parameters. When choosing a wrench, consider the following points:

• Design features . Devices with a pistol grip develop less force than those in which the spindle is located perpendicular to the body. Due to the large lever, the latter can be used to tighten and loosen threaded connections of large sizes.
• Case material and ergonomics . Provides durability and ease of use. The best professional samples are made of steel or light alloys with rubberized handles. Impact wrenches with a body made of high-quality plastic are suitable for household use and small workshops. The shape of the handle should be comfortable and located as close as possible to the plane of rotation.
• Drive power .
  The higher this parameter, the more force the impact wrench develops. This characteristic is often decisive, especially when choosing a tool for large production facilities or capital or road construction projects.
• Torque . When determining this parameter, one should proceed from compliance with the conditions of the proposed work. Insufficient maximum force on the spindle will not allow the operation to be performed, and excessive force will lead to thread breakage.
• Free rotation frequency . It has a decisive influence on the productivity of the tool and allows you to reduce the time required to complete individual operations.

The price of the impact wrench should correspond to its quality and functionality. The tool is primarily purchased to perform a specific range of work and its characteristics must be sufficient for them. Redundancy usually leads to cost overruns, and insufficiency does not allow the planned operations to be carried out with proper quality.

Important

When choosing a wrench, the following factors are decisive:

• Possibility of autonomous use or the need to connect to electrical, pneumatic or hydraulic networks. According to this criterion, the tool is selected taking into account the main area of ​​application: battery devices provide high mobility and are convenient for the construction of large objects and in everyday life. Network devices have high performance and are used in workshops and on conveyors.
• Power Compliance .
  The characteristics of hydraulic, electric and pneumatic impact wrenches must be compatible with the existing networks or equipment. A three-phase tool simply will not work at a voltage of 220V, and exceeding the maximum pressure causes damage to the drive.
• Completeness . When choosing a device, it is necessary to accurately determine the need for types and sizes of nozzles, as well as additional accessories. Devices must perform all types, without exception, of types of work determined by the technological process. The maximum configuration is necessary for repair shops where a lot of different equipment is serviced.
• Ease of use and ease of operation .
  A high-quality professional-grade impact wrench allows you to minimize the number of preparatory operations and increase the productivity of trained personnel. Routine maintenance should also not take much time and be performed by the employee independently without the involvement of specialists and special equipment.
• Functionality . The presence of rotation speed and torque control modes significantly speeds up the execution of technological operations and their quality. The operator is freed from the need to constantly monitor the result, which makes it possible to simplify his actions to the limit, making them habitual and automatic.

The price of a wrench largely depends on its characteristics, functionality and brand. The acceptability of the cost of an instrument of this type is determined based on the amount of allocated finance. In other words, an expensive professional tool will be clearly redundant in everyday life, and a pneumatic one will be inconvenient to use when performing work on the roof.

Best Cordless Impact Wrench

This tool has a high level of autonomy and mobility. A cordless impact wrench has a removable battery that is installed at the bottom of the handle and powers it. Such a tool can be used when performing work in hard-to-reach and isolated places, on roofs, in the field, outdoors and on roofs. There are two types: straight (with a pistol grip) and end (with a narrow body for access to inconvenient connections).

Peculiarities

To ensure continuity of work, the delivery set usually includes two batteries and a charger: while one is charging, the other is in use.

In some cases, batteries are purchased separately; when choosing, you need to pay attention to their compatibility with the impact wrench in terms of bracket and parameters.

Some models are equipped with LED backlighting, which adds convenience when using them.

Characteristics

• Main parameters of cordless impact wrenches and ranges of their values:
• The minimum battery voltage is 10.8 V; maximum –28 V.
• Torque – 25-650 Nm.
• Battery capacity from 3 to Ah.
• Spindle speed from 0 to 2600 min-1.
• Shock-impulse frequency from 0 to 3200 min -1.
• Tool weight from 2.2 to 3.0 kg.
• The minimum and maximum size of the threaded connection is from M12 to M20.

pros

• Cordless impact wrenches are equipped with high-capacity lithium-ion (lithium-polymer) batteries that can withstand long-term continuous operation and do not require complete discharge for subsequent recharging.
• Most tools have a built-in indicator indicating the charge level of the power source.
• The unified 1/2˝ square spindle allows the use of standard heads to perform the job.
• The presence of backlighting on a large part of the models provides convenience.
• The rubberized body and handle eliminate the possibility of slipping out of your hands.

Minuses

• Short battery life, especially under heavy loads.
• Limited resource and high cost of batteries.

When choosing a cordless impact wrench, you should pay special attention to the complete set; the absence of batteries and a charger will lead to additional costs.

This tool is not recommended for use in rooms with high humidity; moisture entering the housing may cause damage to the electric drive.

Rating of the best models

• The highest torque for models of this type is Bosch GDS 18 V-LI HT.
• The most affordable - ENKOR AKM1811
• The best in terms of equipment level is Hammer ACD120LE Premium.

How to choose a cordless impact wrench

Ratings, advice from friends and other sources of information help to make the right choice of power tool, but do not completely guarantee that it will be the ideal impact wrench. First of all, you need to know the basic parameters yourself. Based on them, it will be easier to choose the most suitable impact wrench that will cope with the task.

A cordless impact wrench is useful not only in the garage, but also for indoor repairs.

Torque

The parameter is considered No. 1 in importance. They pay attention to him first of all. The strength of the torque determines whether the electric impact wrench can handle unscrewing the nut. If the battery tool has a weak parameter, it will not tear off soured hardware. However, too much torque reserve will also not be beneficial. The tool will simply strip the nuts from the threads.

Advice! Experts recommend buying impact wrenches with a torque adjustment function. This power tool is suitable for all occasions.

Cartridge

The size of the chuck determines which nuts the cordless tool can handle. However, there is one rule here. The size of the chuck is closely related to the power of the impact wrench. If you put a large chuck on a low-power cordless tool, it will not be able to unscrew the nut. Manufacturers take this nuance into account. Most often, they complete power tools with a universal chuck. It comes with adapters for suitable sized nuts.

Spindle speed

Only the speed of operation depends on the number of revolutions of the working shaft. The higher the speed, the faster you can unscrew or tighten the nuts.

Battery capacity

Each manufacturer equips its tool with a battery. Sometimes it is not included in the kit. It is purchased separately. The battery capacity determines how long the impact wrench can operate without recharging.

Advice! If you plan to do a lot of work, it is optimal to have two batteries and charge them alternately.

Manufacturer

Famous brands are always overpriced. However, it is better to choose just such a cordless impact wrench, and not chase meager discounts. Cheap power tools will quickly disappoint. The parameters may not correspond to the declared characteristics. Instead of unscrewing the nut, the tool will simply “moo.” The battery of cheap impact wrenches is also not designed for long-term operation.

Best manual impact wrench

A device of this design uses the principle of torque conversion using a planetary gearbox. The manual impact wrench is a durable steel case with a constant stop; inside it is a transmission mechanism. On one side, a handle with a comfortable handle is put on it; on the other, a head, directly or through an extension.

When the input shaft is rotated with the handle, the multiply increased force breaks off the nut and unscrews it; tightening occurs in the reverse order.

Peculiarities

The product is mainly used for removing wheels on trucks on the road. The use of an extension made of high-strength steel provides convenience and simplifies this procedure. Among drivers, manual multipliers are called meat grinders due to their external similarity and method of operation.

Characteristics

• Maximum torque from 1000 to 20000 Nm.
• The gear ratio ranges from 1:4 to 1:67.
• The minimum weight of the product is 2.2 kg, the maximum is 30 kg.
• Diameter from 80.5 mm to 121 mm.
• Height from 88 mm to 195 mm.
• Square size: input 1/2˝ and 3/4˝, external 3/4˝ and 1˝.

pros

• simplicity and high reliability;
• possibility of application in field conditions;
• a significant reduction in the load on the driver when unscrewing the wheel nuts;
• ease of mastering the method of application by staff.

Minuses

• the need to exert significant muscle effort when turning stuck nuts;
• no shock-impulse effect on fasteners.

Hand-held impact wrenches are mainly used by motorists; a tool with a different type of drive is simply impossible when stopped on the side of the road.

Rating of the best models

• Best Tool for Ease of Use – Garwin GR-LS4800
• Manual impact wrench with maximum complete set – “AvtoDelo 260 BE”.
• The best design for reliability is BelAvtoKomplekt.

Features of cordless impact wrenches

The main advantage of a cordless tool is that it is independent from the electrical network until the charge level is depleted.
The battery-powered impact wrench can be used independently of a wall outlet, but this mobility comes at the cost of limited operating time. Such a device will be very useful on long journeys, or for doing a small amount of housework. The majority of cordless impact wrenches have less torque than their corded counterparts. If we compare corded and cordless impact wrenches from the same price category, the latter will lag significantly behind in terms of tightening force and number of revolutions. Also, cordless tools have slightly more weight than their mains-powered counterparts, which is due to the battery.

There is a division of impact wrenches into 2 types of impact on fasteners: impact and non-impact. The cordless impact wrench includes special hammers in its mechanism that strike along the axis of rotation and increase the torque to the maximum. This mechanism allows you to confidently remove “boiled” nuts or tighten large connections. Impactless impact wrenches have lower torque and are used in more jewelry applications.

To tighten or loosen nuts in hard-to-reach places, use a special cordless angle wrench. This tool has a somewhat specific design and a narrow scope of application. In most cases, an angle wrench is used in auto repair shops or in production.

Best pneumatic impact wrench

The rotation of the executive body in such a tool is carried out by compressed air, which is supplied from a compressor with a receiver through a special hose. It is used mainly in car services and tire shops, where there is the necessary equipment to ensure the operation of pneumatic impact wrenches. The design of such a product is significantly inferior in complexity to electrical devices.

Features of the view

The main difference of the device is the possibility of use in rooms with a high concentration of flammable gases in buildings with high humidity.

There is no sparking during operation, which eliminates the possibility of ignition.

The tool operates from an external compressor and has a long service life and is highly reliable and always ready for use.

Characteristics

• Maximum torque from 120 to 880 Nm.
• Rotation speed from 1200 to 7000 min-1.
• Air flow from 113 to 538 l/min.
• The weight of the pneumatic impact wrench is from 1.26 to 2.5 kg.
• The maximum pressure in the pneumatic system is up to 6.3 bar.
• Spindle dimension – 1/2˝.

pros

• Possibility of use in any enterprise where there is compressor equipment.
• Great torque.
• The presence of shock-impulse effects on fasteners.

Disadvantages of the view

• Cumbersome and expensive equipment that ensures work.
• Inability to adjust the speed in most models.

Pneumatic impact wrenches are mainly designed for use in industry and repair shops.

When choosing a hand tool of this type, it is necessary to take into account the performance indicator of the compressor.

Insufficient air flow will not allow the device to develop maximum force.

Rating of the best models

• The most affordable (inexpensive) model Kraton AIW-01.
• Pneumatic impact wrench with maximum torque – Fubag 100194.
• The best model for reliability is Scorpio YU-1200P

Features of impact wrenches

A few years ago, lightweight hand-held power tools did not involve the principle of impact action at all. Hammer drills were originally endowed with this capability, but this was their natural functional ability to destroy solid materials. In the impact wrench we are talking about a slightly different principle of impact action. During operation, rotation is carried out not with a constant and uniform force, but with shocks that act not in a straight line in the direction of screwing, but to the side. This feature allows for a more efficient workflow while also reducing physical strain on the operator's wrist.

Of course, the nature of the impact may differ for different models. For example, the Bosch cordless impact wrench already in entry-segment models provides a frequency of 3000 beats/min, but in families of little-known manufacturers this figure can only correspond to flagship versions.

Best Pneumatic Impact Wrench

At repair plants, it is often necessary to unscrew soured threaded connections. Performing such operations with conventional tools is very difficult.

During operation, a pneumatic impact wrench produces short-term impulses on bolts and nuts while simultaneously applying significant torque.

This method allows you to disassemble the most complex connections without destruction.

Cordless impact wrench device

The design is usually formed by the following set of components: battery pack, handle, housing base and cartridge. Inside there is a working technical filling, on which the operational capabilities of a particular model depend. As an optional extra, the tool can be equipped with LED lamps for illumination, an auxiliary handle and other holding devices. At the same time, almost every modern model is equipped with ventilation holes.

When it comes to power supply, cordless impact wrenches are most often powered by lithium-ion batteries. Although there are also models with a universal principle of battery charging, which also allow the use of nickel-cadmium cells.

Best hydraulic impact wrench

The device is designed for screwing and unscrewing fasteners with great force. A hydraulic impact wrench works with a pumping station, which creates the necessary pressure of the working fluid in the line. The supercharger operates in automatic mode and is controlled using a built-in relay.

The use of the radial-axial method of supplying oil through a movable joint makes it possible to give the tool the required position in space.

Peculiarities

Hydraulic impact wrenches provide a quick change in the direction of rotation of the drive, forward and reverse. The kit includes a large number of replaceable attachments and extensions, including those with a universal joint.

This allows the tool to be used to disassemble or tighten awkwardly located connections.

The device is connected to the pressure and drain lines using coupling halves of different configurations, which eliminates the possibility of error.

Characteristics

• Torque from 420 to 60,000 Nm.
• Spindle sizes are 1˝, 1 ½˝ and 2˝.
• The size of the unscrewed nuts is from 27 mm to 180.
• Dimensions: width from 94 to 315 mm, length from 230 to 505 mm, height from 60 to 505 mm.
• Product weight from 4.0 to 50.5 kg.

pros

• A hydraulic impact wrench is capable of developing very high forces.
• The housings of all products are made of aluminum or light alloys.
• The described devices allow you to tighten and loosen large nuts and bolts.

Minuses

• Can only be used in large industrial enterprises.
• The use of the tool must be carried out by qualified workers with good professional and physical training.

Rating of the best models

• The hydraulic impact wrench GG6000 "Enerpred" is capable of developing the greatest force among existing models.
• The best model for ease of use is GKG500 (cassette).
• The most inexpensive and accessible Bosch GDR 10.8-Li tool.

Main technical characteristics

The main indicator that indicates the power capabilities of the tool to work with nuts is the maximum torque. Budget, inexpensive versions usually have a torque of 100 to 300 Nm. This is quite enough for household repair work, but for a specialist who is faced with various, including problematic, fasteners, it is advisable to provide a device with a similar parameter of at least 500 Nm. By the way, premium modifications provide more than 700 Nm, but this is already a professional segment.

Cordless impact wrenches are also characterized by the voltage of the power supply. This value varies on average from 9 to 18 V. Accordingly, this indicator will also affect the performance of the tool. In addition, it is worth noting the weight of the device. From the point of view of workflow efficiency, massive and heavy models are more profitable, but they make your hand get tired faster. Lightweight, low-power impact wrenches usually weigh no more than 1 kg, while professional devices weigh 3-4 kg.

Best load wrench

Tire fitting and repair of heavy vehicles involves the need to unscrew heavily tightened and stuck nuts and bolts. For these purposes, different types of load wrenches are used: electric, pneumatic, mechanical and manual. The latter are most often used to unscrew wheels directly for replacement on the road, the rest are used in stationary workshop conditions.

Peculiarities

Tools of this type are capable of developing significant forces with or without the use of shock-impulse effects. When repairing trucks, you have to unscrew large nuts, which determines a certain range of heads used.

Such devices are not characterized by a high rotation speed of the spindle with the nozzle due to heavy loads.

Characteristics

• Electric drive power up to 1.1, kW.
• Maximum torque from 3185 to 3500 Nm.
• The range of used heads is from M18 to M39.
• Output shaft rotation speed from 410 to 3200 rpm.
• Impact frequency up to 75 beats/min.
• Weight from 8.7 to 64 kg.
• Pressure in the pneumatic system is up to 6.3 bar.
• Capacity up to 238 l/min.

pros

• This tool is specialized and designed for car repair.
• Ease of use.
• Great force and the use of shock to unscrew soured joints.

Minuses

All types of cargo impact wrenches listed, except for manual ones, can only be used in specially equipped and equipped workshops.

The need for personnel with good tool skills and appropriate physical characteristics.

A load wrench is a specialized tool and, accordingly, has a fairly high price. Purchasing such a device makes sense only for large workshops with large volumes of work.

Rating of the best models

• The Polarus-12 electric impact wrench provides maximum force.
• The best model in terms of functionality is Dino Paoli 256 BG.
• The most reliable tool is Nordberg IT4250.

Manual multiplier impact wrench - maintenance and operation

Like any tool you have to work with, a hand-held load wrench must first and foremost be safe. In no case should there be sharp corners, chips, or surfaces with various irregularities in all parts that are included in the design of the impact wrench. Do not allow any overload during work. You also need to make sure that the replaceable socket head is always placed very tightly on the wrench body. It is important that it is secured with a screw, and that the tenon on the output shaft always fits completely into the grooves of the wheelset.

Do not use heads with worn hexagons, as well as heads with spikes for nuts.

Before working with any tool, you must study the instructions for use. It is also important to prepare the instrument itself. When starting work, you need to check whether there is any damage or traces of corrosion on the impact wrench; you need to inspect the entire surface of the tool. Before work, you need to press the socket head on the wheelset nut so that the spikes completely fit into the grooves of the wheelset axle, and only then begin to unscrew.

Before rotating the handle of the impact wrench, you need to turn the head until the end tenons coincide with the grooves of the nut. Next, you need to slide the head onto it so that the head pins fit completely into the groove of the nut. If, after the full stroke of the wrench head has been used, the nut continues to unscrew tightly, you need to remove the wrench and put on the extension so that the tenon fits into the groove for the locking bar from the end axis. Then all that remains is to reattach the key with two screws, and you can continue to unscrew the nut.

Best mechanical impact wrench

The basis of this device is a multiplier - a structure that converts human physical effort into rotational movement of the head. During this process, the torque increases significantly, allowing a mechanical impact wrench to unscrew heavily boiled threaded connections.

Peculiarities

To ensure the compactness of the product, its design uses a planetary gearbox with gears made of high-strength steel. The mechanism is placed in a cylindrical body, to which a stop is attached to fix the position of the tool in space.

The best models are equipped with bearings to reduce the effort on the drive handle.

Characteristics

• Maximum torque up to 3600 Nm.
• The minimum size of the nuts is 24.0 mm, the maximum is 46.0 mm.
• The length of the assembled product is up to 270 mm.
• The weight of the mechanism in running order is up to 8 kg.

pros

• Unscrewing of boiled nuts is carried out smoothly with a uniform increase in loads, which eliminates the possibility of damage to the studs.
• Significant reduction in nut loosening time.
• Significant reduction in the load on drivers when changing wheels.

Minuses

• Products with plain bearings - bushings made of bronze and other materials are not reliable enough.
• Tools with rolling bearings are expensive.
• Mechanical impact wrenches have proven themselves well among truck drivers; their main advantage is the ability to unscrew the nut without damaging the stud.

What should a household electric impact wrench be like?

Having decided on the desired power of the device and its cost, you should pay attention to its other technical characteristics:

• Range of use. It is determined by what nozzles and sizes of nuts the tool can work with (it is considered normal when it can “deal with” 10 or more types of nuts).
• Rotational speed. Typically, 20–40 rpm for a household impact wrench is considered excellent.
• Power. It must be at least 400 W, otherwise you are unlikely to be able to cope with a well-rusted nut.
• Impact mechanism. Its presence is very desirable in a device for household use; a cordless impact wrench can solve almost any problem in your home or garage when you are doing your own car repairs.
• Torque. It is recommended to buy a tool with a rating of 250 newton meters.

Best Gear Impact Wrench

This type of tool ensures the creation of high torque on the output shaft through the use of a special mechanism. The gear impact wrench is designed to perform repair work on automobile and railway transport. In the first case, the device is used to unscrew nuts to change wheels on the road, in the second - to tighten bolts on tracks and switches.

Peculiarities

Geared impact wrenches are equipped with planetary gearboxes with different gear ratios; the force on the output shaft depends on this parameter. The tools can be either single- or two-speed with a switching mechanism.

This design makes it possible to speed up the unscrewing of bolts or nuts; in the first stage, maximum force is achieved, and in the second, the speed of rotation is achieved.

Characteristics

• Gear ratio from 1:42 to 1:58.
• The force on the handle is no more than 11 kgf.
• Maximum torque from 3600 to 5000 Nm.
• The shape and dimension of the output shaft is 1˝.
• The sizes of the used heads are 27, 32 and 33 mm.

pros

• The design allows you to develop a large force on the output shaft, sufficient to unscrew the nuts or tighten them.
• For the manufacture of the tool, alloy tool steel is used, which can withstand the resulting loads.
• For ease of use and storage, the handle and heads are removable.

Minuses

• Effective application requires appropriate skill.
• If the tool is positioned incorrectly, the edges on the nuts may break.

Geared impact wrenches are an excellent alternative to standard wheel wrenches with extensions and levers.

The product preserves the fasteners from damage, which makes its further use possible.

Rating of the best models

• The most functional device PULI PL-2416.
• The best design for ergonomics is KING TOOL SL-156.
• The model with maximum torque is FIT.

Best Handheld Impact Wrench for Trucks

Changing a wheel on the road on a car begins with unscrewing the nuts, which usually become very sour. A manual truck impact wrench allows you to perform this operation with minimal effort. The planetary gearbox converts the muscle force from the rotation of the handle at the input into torque on the output shaft.

Peculiarities

This tool is specially designed to perform two operations: removing and unscrewing the wheel.

To break a stuck nut, maximum torque is required, after which you can switch to a higher speed to reduce the time spent on this procedure.

The delivery set of such a tool includes heads of the two most common standard sizes.

Characteristics

• Torque up to 2800 Nm.
• The weight of a hand-held impact wrench for trucks in working position is up to 8.0 kg.
• Gear ratio 1:56.
• The output shaft has a square cross-section with a side of 25 mm (1˝).

pros

• Simplicity and high reliability of the tool.
• Two-speed operating mode.
• Convenient plastic case for storing and transporting the product.

Minuses

• The need to apply quite a lot of force on the drive handle in an awkward position.
• Inconvenient constant support.

Rating of the best models

• A manual impact wrench on a bearing (ECO) is the best in terms of ease of use.
• Model (UKM) "AUTOLONG" is the most inexpensive.
• A hand tool with a mechanical gearbox 1:56 3200 Nm is the best package.

What is a manual impact wrench?

Today, more and more tools are becoming mechanized, and the usual wrench has been replaced by a rather interesting device, which is similar in principle to a meat grinder. By rotating the handle located at the rear, the torque of which is transmitted to the working rod, you unscrew or, conversely, tighten the nut. The rod in the front part of the tool is ground for installation of different-sized attachments, which are often not included in the kit, but are purchased separately.

The transmission from the handle is carried out due to planetary gearboxes, which increase the applied forces to 300 kilograms per meter

. That is, if you have a mass of 100 kilograms and apply all the weight to a two-meter pipe, which is used as a lever to the “bolt”, then unscrewing the nut will take you half an hour; a mechanical tool will reduce this time by at least 3 times. Some impact wrenches are equipped with an extension for a rotating handle to work with wheels with deep rims.

Best adjustable torque wrench

Modern electronically controlled tools are an excellent replacement for traditional torque wrenches. The adjustable torque impact wrench is electrically driven and equipped with sensors, a processor and an LCD display. The tightening torque is set manually or automatically by the operator, and the process is controlled according to the data on the monitor.

Peculiarities

The adjustable torque wrench has a durable housing with a high level of protection from dust and moisture. The control unit provides reliable protection against overloads and significantly increases the life of the brush assembly of the electric motor.

Tightening is carried out with high precision, the error usually does not exceed 1%.

This allows for good repeatability of the result.

Characteristics

• Maximum and minimum torque from 110 to 12,500 Nm.
• Output shaft dimensions – 3/4˝, 1˝, 1 1/2˝.
• The diameter of the gearbox housing is from 88 to 128 mm.
• The length of the impact wrench is from 425 to 560 mm.
• Height 205 mm.
• Weight from 6.2 to 18.5 kg.

pros

In the manufacture of the gearbox, tool steel is used, which allows it to withstand high loads that are twice the maximum permissible.

• There is a function for connecting an external torque control sensor.
• During operation, the noise level does not exceed 80 dB.

Minuses

• The need for constant visual monitoring of torque parameters.
• High price of the tool.

Impact wrenches with torque control are used to perform particularly critical technological operations during the assembly of products.

When choosing such a device, you need to take into account that this device is networked and for its operation you need to be connected to a household outlet.

Rating of the best models

• The most powerful impact wrench with torque control is Zubr ZGUE-350.
• Model 4PE-62S – the highest tightening accuracy.
• MAKITA 6905 B is the best in terms of ease of use.

The best geared impact wrench

Manually unscrewing soured bolt joints is often accompanied by damage to the nuts or threads. The best technical solution to this issue is the use of a wrench with a gearbox, which provides the necessary output torque.

The mechanism repeatedly increases muscle force to the required level through the use of a single-stage planetary gear.

Peculiarities

Impact wrenches with gearboxes are designed according to a single design scheme; the differences lie in the characteristics of each product. All models have a durable steel body that can withstand significant mechanical loads. The rotation speed can be adjusted with a special device on two-speed products.

Characteristics

• Gear ratio from 1:56 to 1:68.
• Spindle dimension – 1˝.
• Shaft length up to 60 mm.
• The total length of the impact wrench is up to 310 mm.
• Maximum torque up to 3200 Nm.

pros

• Supplied with running heads.
• Good feedback, an experienced operator can feel the condition of the threaded connection.
• Possibility of unscrewing boiled bolts outside the workshop.

Minuses

• When operating the device you need to use both hands.
• Significant forces on the gate lead to low connection reliability.