How to make a nutrunner with their own hands

How to convert a nutrunner into an electric screwdriver

An important advantage of the impact wrench is its ability to tighten fasteners with higher torque and unscrew rusted connections. This tool becomes a good assistant when working with large equipment. Unfortunately, the tool’s overpowering power makes its work more humming. If the electric screwdriver can work quietly after a breakdown, then the wrench will quickly make itself known.

To twist small elements with a screwdriver, you need a certain knack, otherwise there is a great risk of damaging the material. With an electric screwdriver in this respect is even more convenient, though it is a bit longer. Adjusted ratchet mechanism will not allow you to twist the screw, setting its head exactly on the surface of the material.

Summarizing, we can say that the impact wrench is a powerful and loud tool, designed for screwing large fasteners. Suitable for household needs, but not many people need it. An electric screwdriver, on the other hand, has the lowest speed. But it is very easy to use and does not require any special abilities and adapters.

Conclusion: You need a impact wrench if you know exactly where you’ll use it. The electric screwdriver is suitable for most domestic work.

A few words about the impact wrench

An industrial screwdriver or a home-made one is good for fastening and removing of screws and nuts. Some may accidentally mistake it for a drill, but experienced craftsmen will immediately point out the special attachment in the holder, which an ordinary drill does not have. It will definitely not be possible to do without it, if you need to unscrew an old nut, which is so rusty that your hands or a wrench just can’t unscrew it. The tools are available in the following designs:

Nutrunner is widely used in repair shops and in various assembly work. powerful tools are used in mechanical engineering.

electric bike, boat motor, self-made with his own hands from the old engine

The availability of an electric screwdriver inspires many craftsmen to create additional devices and tools based on it. Imagination “hobbyists” is limitless. Equipment for the joinery workshop. lathe, drill, milling machine, drill and angle grinder, mechanical saw and nutrunner.

Even children’s vehicles. electric cars and snowmobiles. are not left out of the equation. What to say about household appliances. grass trimmers and lawn mowers, and even a boat engine. The most amazing thing is that all of the above “homemade”, made by their own hands, working on the basis of an ordinary old electric screwdriver and a talented design solutions home craftsmen.


The design of an electric screwdriver is such that a small improvement is enough to get electricity in hiking conditions. If you remove the circuit board with an electronic regulator from the inside of an electric screwdriver and put a diode bridge on the output. this allows you to spin the generator in either direction. It remains to clamp the self-made handle in the chuck. the generator is ready!

Wind Turbine Generator

Using the motor of an electric screwdriver you can construct a small wind turbine generator for dacha or garden plot, and be independent of electricity supply. Also it will help in case of mains power outage.

To create a wind turbine will require little time. Remove the rotor part from the electric screwdriver. The motor shaft is attached to the plastic plate with a bracket. We bolt the flywheel to the end gear and attach four blades to it, made of PVC pipe. For the housing you can use a tin from a tea can, carefully sealing the gaps with sealant. The wind generator is ready to provide electricity that costs you nothing.

Equipment for the carpentry workshop

Every woodworker equips his workshop with the equipment necessary for his tasks. Not always a person for domestic use can afford expensive machines of production manufacture. And this situation is the impetus for the realization of homemade products based on available parts and tools.

Wood lathe

Wood lathe will be an essential tool for home craftsmen. Circular blanks, door handles, spherical and cone-shaped pieces for wooden railings, chair legs and more can all be made with a homemade lathe based on an electric screwdriver.

There is no need to spend money on factory equipment, if such a lathe without much effort can be made with your own hands from an old electric screwdriver, using a minimum of means and materials.

Revolver Knuckle Roller by Unquiet Hands. Official Video

We can briefly describe one of these options of “homemade” lathe. The rectangular box (frame) is made of plywood with three sides. A slots are cut into the short side. In this simple wooden base and set the electric screwdriver, button up.

The bed, in our case a rectangular wooden box, is screwed to the table and clamped. This is done in order to securely fasten the bed together with the tool on the work table.

The support bar for the cutter is a wooden block, which is also screwed to the table with a clamp.

In the chuck of an electric screwdriver is clamped a piece of bar with a thread convenient for hooking. Wooden workpiece (ingot) is slipped onto the rod. An electric screwdriver is turned on and twists the wooden workpiece. With the help of the cutter, resting on the support bar, the craftsman cuts the desired volumetric-shaped piece.

The tool is essential for craftsmen who use wooden parts and fragments in their work.

Desktop Drilling Machine

A table drill is indispensable for many craftsmen in garages and workshops for precise drilling holes in wood, metal, plastic, etc.д.

Talented craftsmen do not spend money to purchase production equipment. It takes a bit of effort and engineering skill, ingenuity, and desire. As a result, you can get a good construction of a table drilling machine from improvised materials.

The gearbox from an electric screwdriver can serve as the base for the tool. Rod (stand) of the frame can be made of different materials. Everything is used: metal rods, typewriter carriages, wooden constructions.

The mechanism for raising and lowering the gearbox vertically is also made in a variety of ways. Even the springs from the expansion joint are not superfluous.

To fix the gear reducer to the stem of the bed make homemade clamps of textolite, or use suitable parts from other devices or even cars.

Each design is individual and interesting in its own way. The main thing is that the task that is set for the drilling machine must be performed with extreme accuracy and at a proper quality level.

You should not use broken and old screwdrivers for the machine, because the backlash in the chuck does not allow you to achieve the desired diameter of the hole.

Manual milling machine: step by step instructions

If when working with wood you have the task of cutting a groove or circle, do not go and buy an expensive milling machine. Showing ingenuity, you can easily solve this problem and turn an electric screwdriver into a hand router, creating with your own hands the lower bed. a structure that would hold vertically the tool. Manufacturing attachments for milling screwdrivers (drills) are for sale, but their purchase is not always financially justified.

Read more:  Why Doesn't a Petrol Trimmer Start? Causes And Their Elimination

The most easily available material for the handyman at home. plywood and wooden bars. Here of them we will make a frame-adapter for milling, following the instructions step by step:

  • Let’s make the bottom part of the bed. We take plywood 8 mm thick and cut out of it a ring with an outside diameter of 10 cm, with an inner. 5 cm. For this work we will use an electric screwdriver with a wood bit.
  • On the sides of this ring we screw two wooden bars 4x2x10 cm with self-tapping screws. Let’s put the made construction with the bars upwards. It will resemble a stool, put the legs up.
  • Let’s make the upper part of the frame. Let’s cut another ring from plywood, the outer diameter of 9 cm and the inner diameter of about 4.5 cm (about the size of the electric screwdriver).
  • Screw the upper part of the frame to the bottom timber with self-tapping screws.
  • Put the base on the electric screwdriver body. It fits tightly into the round hole on the upper part of the bed.
  • Insert the required cutter into the chuck and adjust the cutter cut. Tightening the chuck.

Impact wrench with our own hands

Good day. I think everyone has had this situation when you really need to unscrew a rusty or non-rusty bolt or nut, but it did not unscrew the damn thing. You can spend a whole day and nerves to unscrew the nut from the wheel, for example. This is the torment I know, when you need to remove the wheel, and the bolts can not be unscrewed. What I just did not take, not to go to the shop (far, no brakes), masters some ten-meter lever, spent a bottle of Wd-40. Then I started surfing the net in the hope of finding a working method, found an article about nutcracker, but gave up the idea something I do not want to break the nuts (and I can not). Then I found a video about the induction heater, but I’m not an electronic engineer and the necessary materials are not. In search of simple solutions I stumbled across a video of one master who made a impact wrench and with simple materials that can be found at each. Making almost the same device, more simplified without welding, etc. (in terms of once will do). Thought it would not unscrew, but after five blows with a sledgehammer, all unscrewed. I made this home-made device not as the author, but from a large drill, which was found a tube the size of. In short, a device really useful and today I will show and tell you how to make it. At the bottom of the article will be a video, in case you don’t understand something or don’t understand anything.

Let’s get started. To make this self-made machine, we’ll need a piece of pipe:

Drill bit and a tube of matching diameter2. Bearing balls that fit the grooves of the drill bit3. Another tube that is slightly larger in diameter than the first4. Bolt5. Welding, Dorka, Drill, etc. tools

From the tube is cut off a part that is slightly smaller than the size of the drill (well, here you need to select, given that from the drill is cut off the shank). Also depends on the size of the unscrewing stroke, the longer the drill bit, the greater the unscrewing stroke). Then on the edge of the tube a hole is drilled for the insertion of bearing balls. The balls should only fit half or slightly more into the holes. From drill cut off tail part (part that is fastened to the chuck) and from the place of the cut off a square is formed for installation of sockets. The end of the drill bit is welded, so that the drill bit will not pop out of the tube. From a larger tube is cut off a piece, the piece of pipe covers the hole so that the balls do not fall down and welded to secure. At the end of the tube bolt is welded visible in the photo, it serves as a plug so the drill did not pop out.

The finishing touches and testing

That’s all, from simple and accessible materials resulted in a useful homemade tool. Now all that is left is to test it. Testing this home-made wrench in action, you can watch on the video or on pictures. In the internet there are many similar self-made machines, but this one, in my opinion, is the easiest to make and the most effective in work. At this point, thank you for viewing and if the article is good, you have to give high kudos. Source Become an author of the site, publish your own articles, descriptions of selfmade with payment per text. Read more here.

What is the best mechanical wrench?. auto repair with your own hands avtoservis-rus.


Nutrunner “Meat Grinder” with a reinforcement of the torque

One of the most important tools for working with threaded connections. Has a wide range of applications in industry and home. Makes tightening and loosening nuts and bolts a dozen times easier. Enables you to work effortlessly on large constructions made of steel alloys. In this article, we will describe the principle of the device and explain where and how to apply it with maximum efficiency.

What is a handheld wrench?

The handheld wrench is a powerful tool for specific tasks, but despite its narrow focus it can facilitate many types of work. Essentially an advanced equivalent of a wrench, but working on a torque boosting principle. From assembling furniture, to unscrewing car wheels, the hand wrench can help almost anywhere there are threaded connections. Despite its compact size, it can effortlessly tighten or loosen even the most impressive connections.

The wrench looks like a meat grinder, for which it received this nickname among the truck drivers. Without going into detail, a mechanical impact wrench consists of a lever, a ratchet, a stop and a bit holder. Inside the housing is a planetary reduction unit that can increase the rotation force by up to 80 times. In order to withstand the high loads the device mechanism is often made of high strength alloy steel.

Handheld impact wrench application

The most common application of the manual wrench with gearbox is in industrial applications for large-sized constructions. popular in machine shops, construction sites, shipbuilding and railway industries. Widely used in locksmithing and other jobs where you have to work with solid or loaded threaded connections.

At home, the manual mechanical nutrunner “meat grinder” is used much less frequently, and has not such a wide area of application in comparison with production. Usually this tool is purchased by truck drivers to be able to quickly change a wheel during trips. You might also need this tool if you’re tackling a construction project that involves a lot of large nuts and bolts. A mechanical wrench is not a tool of prime necessity for the home, and in most cases can be replaced by an ordinary wrench or a crescent wrench.

The “meat grinder” hand wrench for trucks

In a trucker’s tool kit, the torque-assisted wrench or “meat grinder” is very popular. Such tool is able to simplify many times the unscrewing of wheels, stirrups, springs and other bolt joints, even if they are “stuck” and under a heavy load. When you’re away from civilization, a compact wrench can be a tremendous asset, saving time and energy for the driver.

Motorists who have never used a manual nutrunner often ask the question “How to unscrew a nut on a wheel”. The process is very simple, but there are certain peculiarities that must be taken into account when using the tool. The first thing to keep in mind is that a manual mechanical impact wrench turns in the opposite direction (if you turn the handle clockwise, the nozzle and nut will go in the opposite direction). You should also pay attention to the position of the stop (for left and right wheel unscrewing/screwing its position varies). See table below for exact information.

Read more:  Cutter on t 25 with his hands
Wheel location Direction of rotation Thrust location Handle rotation
Right wheel Unscrewing Right Counterclockwise
Tightening Right Clockwise
Left wheel Unscrewing Left Clockwise
Tightening Right Counterclockwise

In addition to manual models, electric impact or pulse wrenches can also be used for changing wheels on the road. They are quite powerful, but less reliable, as they have a more complex mechanism and depend on battery power. This wrench is usually used for cars, but many models can cope with large vehicles.

How to choose a mechanical nutrunner multiplier

Most “meat grinders” have a gear ratio of 1:56 which means that in 56 full turns of the crank, the head of the impact wrench makes 1 revolution. Speed is too low for a full unscrewing, so this tool is used only to loosen fasteners and then turn them with a regular spanner or by hand. There are 2 speed models where you can change the gear ratio to 1:3. In that case, it is sufficient to switch back after loosening and then fully unscrew the nut without removing the wrench.

The torque value determines the amount of force the wrench will exert on the nut. This is measured in newton meters (N-m). Depending on the type of work, you should choose a tool with a suitable torque. For example: 200 N-m is enough to unscrew the wheels of a car, while on trucks this figure should be at least 1000.

The size of fasteners you can work with depends on the size of the connection square. For example: for fasteners with the size from 10 to 16 mm, will fit a square of 1/2 inch, when with larger nuts (20-50 mm) will be possible to work only with a square of 1 inch. Accordingly, a 1/2″ square socket is okay for cars, but for trucks, it should be 3/4″ to 1″.

Hands-On Guy Screwdriver Video. VDIWEB.RU

The pneumatic nutrunner is an indispensable tool when working on threaded connections. Commonly used in body shops and countless construction jobs. Remarkably tightens nuts and loosens stiff joints.

The design of the air screwdriver is quite ordinary, but consists of a huge number of parts that are not immediately understandable. Often, the mechanism parts are strong enough for a long life and fail only because of wear and tear by other excessive loads. Most of similar problems can be identified at home without the need to seek professional help. On how to find the place of failure and remove the fault, tell us next.

To understand the causes of tool breakage, you should understand how the tool is made (fantasy, the mechanism is very common here). The pneumatic nutrunner consists of a nozzle to which the air hose from the compressor is connected. Then there is the start button, which directs the air flow into the cylinder with rotor and blades, which are swung by the highest pressure. The motor transmits the rotary motion to the stop where the nozzles for tightening the nuts are installed. If the impact wrench is percussive, between the stop and the rotor, there is a percussion mechanism.

For more clarity and understanding of the nutrunner, here is a photo and video of the tool in disassembly.

Breakdowns as it is also called a problem in the work of the wrench occur due to wear, damage or heavy contamination of its mechanism. There are a huge number of video defects, below we give the most common there.

  • Low power even at maximum speed and high pressure.
  • Speed or reverse mode does not work.
  • The tool heats up
  • Chuck does not rotate
  • Excessive noise and vibration

Causes of similar problems are usually caused by the following parts: bearings, rotor blades, valves, springs, impact cams, seals and speed regulator. Depending on the level of damage to the part, of course it is repaired or replaced. It is necessary to consider how to make your own screwdriver sound alive again.

Zubr ZGUE 350 network impact wrench put to the test. Cobalt shock heads

This process usually does not cause any particular difficulties, because of the simple construction of the tool and the smallest number of unscrewed parts. The first thing you need to do to get to the “guts”. is to use an Allen key to remove a few screws on the back cover. After unscrewing remove cover with gasket and speed regulator. After gaining access to the main mechanism, we carefully remove it from the case, making sure to remember the sequence of parts. If you are afraid of confusing the parts when assembling, take a picture or video of the disassembly.

After taking out all the parts the first thing we must do is to evaluate their appearance. Parts are lubricated and free from rust and oxidation. Then we examine the mechanism for chips. If parts are damaged they need to be replaced. Read the part names on the air wrench in the picture above.

If your tool is more than one year old and has not been used for a long time before the malfunction, maybe the cause of the failure is obvious corrosion and rust formed on the mechanism for a long time of inactivity of the tool. The solution to this problem may be a simple cleaning of parts with the following lubrication. If this method does not return your tool to operation when needed, it does not have to be dirty and unlubricated.

The tool may not work or otherwise malfunction even with an unstained, lubricated mechanism. Then, the reason for the malfunction is obviously in the breakage or wear of a certain part. Here you should carefully inspect each piece for chips, cracks or otherwise scuffs. Pay more attention to the bearings and rotor blades, because these parts are more prone to mechanical damage.

Peorator, nutrunner

Also carefully check the cylinder block and make sure the rotor blades are securely attached to the cylinder walls. It happens when the impact wrench is operated without oil for a long time, so that the rotating power decreases considerably. If there is an obvious free move, you have 2.4 repair options for air ratchet: install a new block or grind the old one. Grinding is required on the machine for a perfectly smooth surface.

The service life of any mechanical tool is in most cases dependent on the quality of the lubrication of its parts. The easier the mechanism works, the less wear and tear occurs. If you have a desire to keep your impact wrench in good working order for a long time, follow these simple rules for servicing the tool.

There is no need to disassemble the mechanism of the impact wrench to add oil. It is necessary to put about 8-10 drops of grease in the branch pipe tool, where the air hose is installed, then run and let run for 30 seconds at idle speed, so that the oil is more sharply distributed on the parts. This function should be repeated every 3-4 hours of continuous operation, also before cleaning the tool.

If you use your equipment routinely, the act of adding oil every 4 hours can become a chore. To remove unnecessary distractions from your own work cycle, install a lubricator for your impact wrench (lubricator) that will supply oil evenly in its operating time. Such a method is more successful and provides constant lubrication of parts, just do not forget to add oil to the lubricator itself.

on what points to rely when buying a nutrunner?

First of all, all such devices can be divided into three large groups according to the scope of use. household, professional and specialized. The first type has a compact overall dimensions, it is recommended to use them occasionally, because they are not designed for constant load. Professional wrenches are suitable for intensive use in conditions of car service stations, construction sites, and so on. These tools have a high level of power and performance. Specialized necessary for specific tasks, such as tire fitting of special equipment, trucks, and so on.

Impact wrenches can be cordless, cordless, pneumatic or hydraulic powered, the latter being the least popular. It is most convenient to use cordless wrenches, as they have mobility. they can work even in the field. However, the battery of these devices often has a significant overall dimensions and a decent weight, so to work with such a tool will not be very convenient.

Read more:  How to make iron wheels on a single axle tractor

Cordless wrenches are powered by the electricity network, have high output and are much more powerful than the cordless type. Pneumatic tools are usually used at service stations. These wrenches are more powerful and reliable as they do not contain a motor.

An important point is the power of the unit. it is selected depending on what work will be carried out with this tool. For example, 350W will be enough to remove a tire from a car, but even 1,000W will not be enough for heavy equipment.

Compressors using unnecessary compressors for air tanks

If while choosing compressors and motors, craftsmen have chosen parts from refrigerators and automobiles, then as air receivers they use everything. even champagne and Coca-Cola bottles (at pressures up to 2 atm). Here are a few worthwhile ideas.

If you have on hand an air tank from KrAZ, you can get a unit with minimal labor costs: all the connectors are already screwed into it.

Compressor unit with a receiver from KrAZ

If you own unnecessary diving equipment, you can also use it in your work.

Receiver from scuba cylinders (mounting stage. without condenser battery)

Hever Discard The Steering End. Great idea with your own hands!

Almost every homeowner with a gas-cylinder stove has these unnecessary containers.

Compressors with gas cylinder receiver

If the hydro accumulator in the water system has a leaky “pear”, no need to throw it away. Use it as a receiver by removing the rubber membrane.

Receiver from a hydraulic accumulator

make, nutrunner, their, hands

The expansion tank from VAZ. inexpensive purchase, even if it is new.

Receiver. expansion tank from VAZ car

The following idea for installers of conditioners who have leftover freon cylinders and details of split-systems.

Freon cylinder as a receiver

One more viable receiver is made of tubeless car wheel. Extremely budget-friendly, although not very productive model.

Receiver from a wheel

Types of tools with reviews, how to use

People who work with repair or maintenance of various mechanisms note that most of the working time is spent on actions with fasteners. A large number of nuts or bolts require effort that can be spent on more useful and efficient work. Appearance of devices, mechanizing the process of work with screwed connections, radically changed the specifics of technicians and mechanics work. Speed of repairing operations increased, quality and accuracy of tightening connections increased, it became possible to work with connections in hard to reach places. Wrenches quickly became widespread and appreciated by users, who were able to significantly speed up work and improve accuracy of tightening connections.

Types of wrenches and their features

A handheld wrench bears a great resemblance to an electric drill, lacking a chuck. Instead of a bolt or nut socket, or a square socket that fits in the socket of the replaceable socket, it is fitted on the shaft. Has a pistol grip with a start/reverse button, electric motor or other type of drive unit which turns the drive shaft. There are also other types of wrench designs which are configured according to the type of drive and power level of the device.

There are different types of impact wrenches. They are divided into rotating and impact wrenches. The former are driven by the relevant mechanisms, the latter create an additional rotational impulse tangential to the direction of rotation. Creates an effect similar to slamming a hammer on a wrench to increase the tightening torque. Impact wrenches are used extensively by professionals, rotating wrenches are used for less demanding connections.

Handheld models are used for work on relatively small threaded connections, others are used depending on the type and size of the connection. For example, self-propelled wrenches are used on railroads for work on the tracks. Portable wrenches are used for dismantling wheels on large cars and other purposes. Large devices are relatively rare because of specific uses and limited handling.

There are different types of spanners according to the source of rotation:

Pneumatic and hydraulic tools belong to the category of professional, have a great resource and power. Power tools are considered household devices, but they are more affordable and do not require a lot of additional equipment.

These devices are common, so you should consider them in more detail.


Self-sufficiency is a big plus for cordless spanners

Cordless wrenches are a variant version of a broader group of devices. electric. They are convenient because they allow you to use them in standalone mode. No wires or power hoses make it possible to work in difficult conditions, among a large number of parts, in tight spaces. The amount of battery charge is not infinite, the rotation force decreases as the battery drops. Also the total power of cordless devices is noticeably lower than the other types, the torque is usually less than 500 Nm, which limits the area of application of the tools. They are most often used in everyday life, for minor repairs of equipment with their own hands, in small workshops. For long-term work, it is necessary to have several batteries, which can be quickly replaced as they become flat, and connected to the charger immediately.


The power of electric wrenches is higher than cordless ones, so they can be used to work with tighter connections

Electric wrenches combine cordless and corded designs. In common parlance, only corded devices are usually called electric, so we should elaborate on them. Their power and torque are an order of magnitude greater than that of cordless wrenches, which makes them preferable for work with sensitive and tight joints. They are adjustable, reversible, quiet and stable. Most corded devices are of the percussion type, with a high torque. The main advantage of electric tools, both cordless and corded, is that they have their own motor. The disadvantage is the need to connect to the network, which in practice is accompanied by pulling behind the device electric wire, disturbing the balance of the tool and constantly tangled among the nodes and parts of the serviced mechanisms. In addition, there is an increased risk of electric shock, which forces manufacturers to insulate devices more carefully, and workers must comply with safety rules when working with power tools.


often hydraulic wrenches are used to work with connections on heat exchangers

Hydraulically powered wrenches have high power and are able to work in difficult conditions. The rotation source is a special fluid (usually oil) supplied from the hydraulic system to a turbine located inside the tool body. The peculiarities of hydraulic devices are the high torque, which is much higher than that of all other types, as well as the ability to control the force on the shaft in real time. The main area of application of hydraulic tools is responsible threaded connections on heat exchangers, flange connections of various pipelines with aggressive or poisonous chemical substances. Some tools can be used underwater.

The disadvantage of hydraulic tools is the necessity of hydraulic system that is a complex unit, with supply hoses and other necessary elements. Binding to the equipment makes the use of hydraulic screwdrivers limited, possible only in specialized enterprises or workshops.

Two types of hydraulic wrenches are available:

  • socket inserts. used on critical connections that require very high tightening torque;
  • cassette tongs. used to work on fasteners that are inaccessible to standard tools.

Both types come with sets of inserts and adapters that allow you to expand the tool’s range of applications.

make, nutrunner, their, hands