Which Way To Unscrew The Screwdriver Chuck

How to unscrew the chuck on the screwdriver Unscrew the chuck on the screwdriver. What are the ways to mount cartridges? How to determine the method of fastening on the screwdriver yourself? Removing and replacing the cartridge on Makita, Bosch, Hitachi, Interskol screwdrivers.

How to unscrew a chuck on a screwdriver

It has long been no secret that it is more convenient and fastest to unscrew and tighten screws with a screwdriver.

Any tool tends to wear out and fail. This is especially true for moving and frequently used parts. In a screwdriver, such a component is a chuck. An element that is completely out of order should be replaced. But first you need to understand how the cartridge is removed. To do this, you need to know a little about the technical characteristics of the device. To carry out repair work, you will need a hammer, a screwdriver, a vise and some keys.

Chuck Removal: Makita Screwdriver ()

Typically, Makita brand power tools are equipped with a threaded fastener with an auxiliary retention using a left-hand screw.

A number of actions should be followed:

  • Unscrew the retaining screw (clockwise).
  • Activate the spindle stop button.
  • Wrap the body with a thick cloth and squeeze in a vice.
  • Clamp the hexagon in the cams.
  • Striking with a hammer on the free plane of the key, the chuck is scrolled and then removed from the shaft.

How to determine the method of fastening on a screwdriver

The fastening method is easy to recognize if you carefully examine the details. The cartridge of the Morse cone variety will have the following inscription: 1-6 B10. This means that in the chuck, it is permissible to fix nozzles with a shank diameter of 1-6 mm, and B10 is an indicator of the size of the Morse taper.

The cartridge, fixed with a threaded fastener, is marked:

  1. Metric thread (domestic products) 1.0-11 М12х1.25
  2. Inch thread (foreign made) 2-13 mm ½-20 UNF

How to remove and change the cartridge ()

Which Way To Unscrew The Screwdriver Chuck

If you are faced with replacing the cartridge, initially, you should figure out how to mount it. To carry out the procedure with a minimum of effort, experts do not recommend overloading the screwdriver in everyday use. If you operate the tool for fifteen minutes without interruption, the rotating parts may overheat and lock firmly into the socket. Then it will be more difficult to carry out the replacement. Experts recommend the tried and tested methods for removing the cartridge, described below:

  1. Unscrew the threaded fastener with an L-shaped hexagon, which is sure to be found in every owner. Next, insert the hexagon (size 10 mm), place the short edge into the chuck and squeeze tightly in the jaws. After that, start and immediately turn off the device at low speed so that the free edge hits the table slightly, thus the thread will weaken and the chuck can be unscrewed.
  2. If the chuck is threaded with a locking screw, then:
    • Unscrew the left-hand screw clockwise.
    • Then insert the hexagon into the cams, and with a quick movement of the hand or hammer, turn the free edge against the clockwise movement. Now you can unscrew the cartridge.
    • If both methods didn’t work:
      • We take out the shaft from the open housing, on which the gearbox and the cartridge are located. Use a pipe wrench to remove the cartridge.
      • To remove and change a chuck with a Morse taper, you need to have a hammer with you, with which the shank will be released from the housing socket.

      Chuck fastening methods

      Chucks are most often attached to the shaft in the following ways:

      1. By means of a morse cone
      2. Threaded method
      3. With the fixing screw

      The Morse taper is one of the easiest and most practical methods that has been used since the 19th century. The plane of the shaft is machined in the form of a cone with the assigned parameters. A similar cone is located in the middle of the chuck. When they are combined, the components are quickly and firmly connected.

      The next method features a thread that is cut into the edge of the power tool’s work shaft.

      The fixing screw is used to additionally connect the screw-in chuck to the shaft. Typically, the screw has a Phillips head as well as a left-hand thread. It is necessary to unscrew the jaws of the chuck as much as possible in order to see it.

      Removing the chuck: Bosch screwdriver

      Bosch screwdrivers are usually equipped with a locking screw.

      • We put the key in the cams and tighten it a couple of clicks.
      • The tool is placed on the edge of the table.
      • Pressing the stop button, remove the chuck retainer on the shaft.
      • The cartridge is removed against the clock movement.
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      All actions require special attention and sequence during disassembly / assembly.

      Having received theoretical knowledge about the types of cartridges, it will be easier for you to independently repair the screwdriver Interskol, Hitachi, as well as other manufacturers.

      How to unscrew a cartridge in Milwaukee?

      This product is of high quality and reliability. There is also an additional function here. Screw fixation. When changing the cartridge, you must first remove this screw, the instructions do not allow you to do this yourself. Also, this machine is equipped with a chuck with a quick clamping function. It includes fine pitch and 9/16 inch threads. It is recommended to change such a part in special repair centers.

      To unscrew the cartridge on a Milwaukee screwdriver, you should first try to remove this element in the usual way:

      1. It is necessary to open the cams and remove the screw, which consists of a left-hand thread, by unscrewing it.
      2. In case of an unsuccessful attempt, use a punch to lightly hit with a hammer to displace the thread.
      3. Then the hex key should be pressed into the cams.
      4. Switch to reverse.
      5. You need to turn on the start for a few seconds. In this case, it is necessary to put a solid object under the key.

      As a rule, after this procedure, the chuck is unscrewed, but it may be necessary to insert a flat screwdriver on the side of the element and carefully move the thread out of place. In rare cases, it becomes necessary to completely dismantle the device with the removal of the gearbox with the spindle.

      Hitachi and the Bison

      Both devices are similar to each other. When unscrewing the chuck, it must be disconnected from the shaft. This is done quite easily. You need to do the standard steps. The screw must be turned clockwise, then remove the cartridge.

      Withdrawal procedure

      There are two types of cartridges. Quick-clamping and cam. First of all, for removal, you need to prepare tools (screwdrivers, hexagons of a suitable size, some heavy object of a small size, a punch). It is imperative to observe safety precautions to wear glasses to protect your eyes from small elements that may fly off during operation. Further, the dismantling process itself begins.

      It is necessary to find out what type of chuck is used in each specific tool (with a Morse taper, on a thread or on a thread with an additional fixing screw). This can be recognized by the inscription. For example, 1 6 B10 refers to the Morse taper, in Russian production 1.0 10 and for foreign brands 2 13 mm ½. 20 UNF, dimensions here are in inches.

      The tapered chuck can be removed without much effort. You need to lightly hit it with a hammer, while you should be extremely careful.

      How to spin a cartridge on a Divolt-220 and Nikkey

      This tool is network-powered. It is equipped with a key cartridge. To remove such an element, you must:

      • Press the cams in as deeply as possible to open the bottom;
      • Unscrew the screw (on the left thread);
      • So that the spindle does not rotate, the element should be fixed (with a key from the chuck or wrap the tool with a rag) and clamped in a vice;
      • Then unscrew the screw;
      • Remove the cartridge effortlessly.

      If an attempt is unsuccessful, it is necessary to remove the housing cover, and then fix the spindle inside.

      Important note. It is imperative to disconnect the device from the mains before replacing the element. There is no need to turn on the tool for this process.

      To unscrew the chuck on a Nikkey screwdriver, simply read the instructions above. The principle of removing elements is similar for all these models. If you understand one of them, then you can easily cope with any unit.

      Bosch and Interskol

      How to unscrew the chuck on a Bosch screwdriver? The difference between the Bosch model and Makita is that the first has an autolot. Replacing an element is exactly the same as in the previous case. Clockwise.

      Features of parsing the Interskol screwdriver:

      1. To do this, insert the eight hexagon into the chuck and fix it.
      2. Make sure that the battery is fully charged and that the angle of the key is in the down position (parallel to the handle).
      3. Then you should select the drilling mode and reverse.
      4. Place a solid object (stone, small weight or dumbbell) under the hex key and turn on the start.
      5. The cartridge is unscrewed with intensive counterclockwise movements.

      How to unscrew the chuck on a Makita screwdriver?

      It is a widely used tool in everyday life. The chuck removal operation is performed as follows:

      1. It is necessary to expand the part with a flat-shaped screwdriver. It is important to remember that for this model this element is connected to the thread. This is very important in order to unscrew the chuck on a Makita screwdriver. This brand differs from others in the deep location of the element bolt. You need to carefully hit the head with a hammer.
      2. Which way to unscrew the screwdriver chuck? First turn the locking screw to the right (clockwise). It is in the cartridge. Then you need to insert a hex key into it, fix it, turn on the reverse and press the drilling button. In some cases, it is easier to use a locksmith’s vise and tap on a key. This method is more risky, and in the process, you can damage the cartridge. The method is used when it is completely replaced.
      3. The next step after removing the screw is to remove the cartridge. It is necessary to make a corkscrew fixing if there is room for a wrench. If it is missing, remove the housing cover.
      4. In some cases, manufacturers use plastic cartridges in low-power devices. In order to unscrew the chuck on a screwdriver from this material, you need additional instructions. When removing the cam piece, it is necessary to open the vise with which it is held. A Makita brand product has an automatic lock. And the cartridges. Single-seat.
      5. The part of the hexagonal shape for the bit is disassembled with an adjustable wrench, having previously inserted a nut inside and performing the manipulations indicated above.
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      Makita cordless drill / driver. Threaded connection

      For work, you need an L-shaped ten-millimeter hexagon. It is inserted into the cams, clamped tightly and rotated. It is more convenient to fix the hexagon in your hand or on a support and turn on the engine at low speeds. It should only work for a fraction of a second. This is usually enough to loosen the connection and remove the sleeve without hindrance. If the method does not work, the tool should be disassembled to approach the joint from the other side.

      How to unscrew a chuck on a screwdriver

      This should be done not only in critical situations when urgent repairs are required. Parts need constant lubrication and cleaning, even if they have not been used for a long time. Without preventive maintenance, the tool will quickly fail. It is better to work on it with breaks of several minutes. The bit and motor must be protected from overheating.

      How the cartridge works

      Two basic designs are used.

      • Cam fixation occurs with an L-shaped key inserted perpendicularly.
      • Keyless for fixing it is necessary to clamp one cylinder of the body by hand, rotating the other cylinder around its own axis.

      Cam lobes are less convenient, but provide a more reliable connection. When the key is turned, the adjusting sleeve compresses the steel cams until they close.

      Quick-action clamps tighten faster. They don’t require a key.

      Construction details

      • Sleeve
      • Base
      • Washer
      • Bearing
      • Nut.

      The device can be more complex, but in most cases it consists of these elements.

      Before disassembling the screwdriver chuck, you should look for other solutions to the problem. Trying to spin it up is useless. The fact is that most models are not designed for this, and it will not be possible to get inside without damage. If they understand, then there are several ways to act.

      What to do if the cartridge cannot be disassembled

      • Insert a bolt with a diameter of about one centimeter into a hammer drill or drill capable of operating in percussion mode. A broken drill can be used.
      • Insert a bolt or drill from the back.
      • We spread the cams.
      • Now you need to find an emphasis, they can be a table or a floor. A piece of rubber or foam must be placed on the shock absorber.
      • The hammer drill with a sleeve rests on the shock absorber and turns on for a few seconds.

      After repair or maintenance work, the assembled model will be easy to reassemble. It is important not to mix up the position of the cams. With prolonged use, they rub against each other and deform a little.

      If the design does not involve outside interference, the body will have to be sawed and then connected with a homemade girth. This process is quite time consuming and easier to install a new part.

      Repair of a drill, screwdriver
      How to replace the drill chuck

      Even the most reliable branded power tool, such as an electric drill, hammer drill or screwdriver, not to mention a Chinese-made tool, over time, depending on the intensity of use, wears out and starts to hold drills, bits poorly, or jam the chuck.

      The same fate befell the patron of my electric drill, which has been serving faithfully for over 12 years. The malfunction began to manifest itself with jamming, expressed in the difficulty of rotating the squeezing ring. In addition, water got inside the cartridge during the renovation of the apartment, and a coating of rust appeared in the guide grooves of the cartridge cams. The running surfaces of the cams are also worn out. Although the drill chuck was still working, changing drills was extremely inconvenient. I decided to replace it with a new one, and then the question arose, how to remove the cartridge from the drill shaft?

      Drill chuck marking
      fastened with a thread

      Both metric and inch threads are used to attach the drill chuck to the tool using a thread. Cartridges of a domestic manufacturer, as a rule, are produced with a metric thread, and an imported manufacturer is always with an inch thread.

      A drill chuck with a metric thread is usually marked on the body as follows: 1.5-13 M12 × 1.25. The numbers 1.5-13, as you probably already guessed, mean the diameter of the shanks of drills or other tools that can be clamped in this chuck. The letter M means that the thread is metric, the numbers 12 and 1.25 indicate the thread diameter and thread pitch, respectively. Currently, drill chucks with a metric thread are practically not found, except that such a chuck can be seen on an old Soviet-made hand drill.

      At present, the market is filled with power tools from a foreign manufacturer, and drill chucks are usually attached to them using an inch thread.

      Drill chucks with inch threads are marked in the same way as chucks with metric threads. For example, 2-13 mm 1/2 20 UNF, as in the graph. Numbers 2-13 indicate the range of clamping diameters of the drill shank, 1/2. Thread diameter in inches (for reference, one English inch equals 2.54 cm), 20 indicates the number of threads per inch (thread pitch).

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      Having learned the rules for marking drill chucks, now you can easily determine how it is attached to the tool and can choose the correct chuck replacement technology. Marking also allows you to purchase an interchangeable chuck if it is worn out or broken on a drill or screwdriver.

      How is the drill chuck fixed to the tool

      An external examination of the power tool, it is often not possible to determine in what way the drill chuck is fixed. But if you know the markings, then the mounting method will be determined even with a cursory glance at the cartridge.

      Drill chuck mounting methods

      In order to answer the question of how to remove the drill chuck, you need to understand the existing methods of attaching the chucks to the shafts of drills and screwdrivers.

      There are two ways to attach the chuck to the power tool. The first method was proposed back in 1864 by Stephen Morse using a cone. Morse, by the way, is also the inventor of the twist drill. The essence of the method is to mate two surfaces in the form of a shaft and a part with a hole, having the same taper with an angle ranging from 125’43 “to 130’26”. In honor of the inventor, this method of fastening was named the Morse taper, which is shown in the graph below. The cone on the graph has a larger angle for clarity.

      The method of fastening on a Morse taper is widespread, since it is simple and sufficiently reliable under loads along the axis, as in drills and screwdrivers. To fasten the drill chuck, it is enough to put it back on the shaft with a Morse taper with a little effort. Removing the cartridge is also simple, it is enough to hit its body along the axis in the direction of the drill installation with a hammer. The ability to quickly install and remove the tool during operation is the main advantage of fastening with a Morse taper.

      The second, now more common for attaching drill chuck to power tool shafts, is threaded.

      At the end of the shaft coming out of the drill or screwdriver, a metric or inch thread is cut and the drill chuck, like a nut against the flange, is screwed onto this shaft. Since the thread is right-hand, and during work, the chuck mainly rotates clockwise, it is constantly tightened and thereby ensured its reliable attachment to the tool.

      Drill chuck marking
      fastened with a Morse taper

      In accordance with GOST 9953-82, the tool cones are shortened. Basic dimensions. There are nine standard sizes of Morse cones for fastening drill chucks: B7, B10, B12, B16, B18, B22, B24, B32 and B45. The larger the number after the letter B, the larger the size of the cone.

      Now you can easily determine how to install the drill chuck shown in the graph by the markings on it. Obviously, this cartridge is fastened using a Morse taper, size B10. To remove this cartridge from the shaft of the power tool, you will need to knock it down with a hammer.

      In the marking in front of B10, numbers 1-6 are also applied. They indicate the range of drill shank diameters that the chuck can clamp.

      How to unscrew the chuck from the shaft of a drill or screwdriver

      To remove the chuck from the tool, you need to fix the shaft and, grasping the chuck by the housing, unscrew it, turning it counterclockwise, when viewed from the side of the cams. The main thing is to rip the cartridge off the ground, then it is usually easily unscrewed.

      I was lucky, as there were chamfers on the round base of the chuck, which could be well hooked with an open-end wrench # 19. There were no such samples in the replacement cartridge.

      After gripping the cartridge with an open-end wrench and one sharp blow on the wrench with a hammer, even without fixing the shaft, as in the graphy, the cartridge started to move. But it turned off tight, and there was a reason for this. I had to continue twisting it with light blows on the key with a hammer.

      Looking inside the cartridge, I did not notice the fixing screw because the hole in the head for the star-shaped bit was clogged with dirt, which just had to be removed. Therefore, unscrewing the cartridge, I simultaneously tore off the thread of the fixing screw, it is strange that it did not break off.

      If there are no chamfers on the base of the chuck, then you need to clamp a hex bar or an M10-12 bolt with a hex head in its jaws, onto which you put a key and hit it with a hammer. If the chuck cannot be screwed in this way, then you will have to disassemble the drill, remove the shaft with the chuck, clamp it in a vice and twist it. Instead of an open end wrench, you can use a pipe wrench by grabbing the chuck by the outside of the housing.