How to remove a chuck from a screwdriver

Removal from famous models

There are a lot of different models of screwdrivers on sale, which are produced from under the wing of numerous companies. Buyers have never even heard of many of them. But there are models that are always heard. To surely understand how you can dismantle the chuck, you should study the examples of removing this part on the most famous brands of screwdriver.

By typing the corresponding request on the Internet, you can see the result, where the phrase will necessarily be written: how to remove the cartridge from the Makit screwdriver. And this is quite understandable, because the brand is very famous, and therefore it is worth considering.

Makita screwdriver

In most cases, Makita manufactures these screwdrivers that are equipped with a threaded fastener. It also has an auxiliary fixation in the form of a screw with a left-hand thread. To disassemble such a device, you must adhere to certain actions.

First you need to unscrew the locking screw clockwise. After that, you need to press the spindle stop button. The body must be wrapped in a very dense cloth, and then squeezed in a vice. The fabric is required in order not to damage the structural elements. In the cams, squeeze the hexagon, hit with a hammer on the free plane of the key, and then unscrew the chuck and remove it from the shaft.

This method should definitely help. The fact is that Makita screwdrivers are made using the same technology, and therefore the disassembly instructions are universal.

Bosch cars

Those people who are wondering how to remove the chuck from a Bosch screwdriver should definitely find out that a fixing screw is installed on such a machine. That is why all actions with the product of this company must be performed in a certain sequence:

The key must be placed in the cams of the Bosch machine, and then tightened until a few clicks are heard. Place the tool on the edge of the table. It is necessary to press the stopper button, and then remove the retainer, which is located on the shaft. The cartridge will need to be unscrewed counterclockwise.

It should be noted that when disassembling the equipment, you must be very careful and follow a certain sequence. Assembly is carried out in reverse order.

It is important not to forget to install all the parts back.

Theoretical knowledge about disassembling the mechanism on two devices should give sufficient skills in order to repair other types of screwdrivers with your own hands, for example, Hitachi Metabo, Bison. The question of how to remove the cartridge from the Interskol screwdriver should also disappear, just as there should be no problems with other manufacturers.

Originally posted 2018-03-28 15:12:02.

The main types of chucks for a drill

By their design, they are divided into two main types:

• a gear-girth chuck, in which the tool shank is clamped using a special key;
• keyless chuck for a drill (BZP), in which the clamping sleeve is actuated by means of its manual rotation.

Varieties of drill chucks

Clamping jaw chucks, installed on modern drills, allow you to reliably fix tools with a shank diameter in the range of 1–25 mm. Devices of this type are practically devoid of disadvantages, the most significant of which is their rather high cost.

The most popular type of clamping device installed on modern models of drills is the keyless chuck (BZP). To fix the tool in the BZP category chuck, just a few seconds are enough, and there is no need to use a special wrench. Clamping of the tool shank is carried out by manual rotation of the adjusting sleeve, on the outer surface of which a corrugation is applied, which facilitates the implementation of this procedure. In order to regulate the mechanical stress created on the tool shank, a special locking device is provided in this type of clamp.

To fix the drill, hold the lower sleeve with one hand and tighten the upper sleeve clockwise with the other.

The most significant disadvantages of the BZP include the fact that in cases where the elements of its mechanism wear out, it does not securely fix the shanks of large-diameter drills. This leads to the turning of the tool during operation.

Compared to clamping devices of the BZP category, gear chucks for equipping a drill provide reliable fixation of the tool in any situation. Users who often work with electric drills prefer this type of chuck. The only significant drawback of such devices is that the key with which they are activated is quite easy to lose. Meanwhile, the occurrence of such a problem can be easily avoided if, immediately after purchasing the drill, fix the key on the device wire using insulating tape or ordinary rope.

The diameter of the shank of the accessory clamped in the mini-chuck depends on the caliber of the collet

The chuck for mini-drills, installed on compact drilling devices, is also very popular. The latter are actively used by jewelers. The mini chuck belongs to the category of keyless chucks for a screwdriver or light drill. This small chuck, made primarily of brass, is used to hold tools with shank diameters in the range of 0.1–4.5 mm.

Replacing and disassembling the drill chuck

There is nothing complicated in the question of how to replace a worn out chuck with a drill. To do this, it is enough to purchase an appropriate clamping device, remove the old one from the drill and install a new one on it. It should be borne in mind that both conventional and mini-drills can be fitted with cartridges of two types:

• with a conical connection;
• threaded.

Chucks, for installation on a drill of which a thread is used, are removed and fixed according to the above scheme

When replacing such a device, it is not enough to know that it is threaded; it is also important to take into account the markings that are mandatory on it. Such chucks can be marked as follows:

• 1.5-13 М12х1.25;
• 1.5-13 1/2 - 20UNF.

Thread Chuck Marking

The interval 1.5-13, present in the designation data, indicates the minimum and maximum diameters of the cutting tool to be installed. The rules for replacing the chuck on a drill suggest that the new clamping device must be marked completely identical to the designation of the old one.

With the question of how to replace a cone chuck with a drill, everything is somewhat simpler. Various markings can also be applied to devices of this type, namely:

• AT 10;
• AT 12;
• B16;
• B18.

Chuck Marking with Morse Taper

To replace a chuck of this type with a drill, you just need to select a clamping device with the appropriate marking and insert its seat into the tapered hole of the drilling equipment. It is quite simple to navigate in such a marking: the letter "B" means that this is a cone-type cartridge, and the number indicates the diameter of the lower part of the bore.

Removing the cone chuck from the drill is as easy as installing it. In order to perform such a procedure, you just need to knock out the clamping device from the drill bore, for which a conventional hammer is used. You can also get acquainted with the details of installing and removing the cone chuck of an electric drill by watching the corresponding video.

On Soviet drills, the cartridge with a cone mount simply knocked out, the design of the gearbox allowed such rudeness. To remove the cartridge of modern models, you need to use pullers or special tools

How to disassemble a screwdriver or drill chuck? This procedure must be periodically performed for maintenance of the device (cleaning and lubrication of all its internal elements), as well as minor repairs. This significantly extends the service life of the chuck.

When disassembling a cartridge, you should consider what type it belongs to. Focusing on the instructions or video, it is necessary to perform all the steps for disassembling such a device as carefully as possible so as not to damage its constituent elements. After all the maintenance or repair procedures for the drill chuck have been completed, reassemble it in reverse order.

How to remove?

Now let's talk about how to remove the part in question. This may be necessary for routine cleaning and lubrication, which will increase tool life. First, let's look at the case of detaching the cartridge with the fixing bolt. You will need a hexagon that is the correct size:

• first of all, the screw is unscrewed clockwise if the part is with a left-hand thread;
• before that, you need to open the cams as much as possible to see it;
• we insert the key into our fists and quickly scroll it counterclockwise;
• we unscrew the cartridge.

If we are talking about dismantling a chuck with a Morse taper, then here you need to have a hammer on hand. Using it, you can knock the shank out of the body socket. First, the screwdriver is disassembled, after which we take out the shaft with the chuck and the gearbox located on it. Using a pipe wrench, we twist the clamp cylinder.

Now let's move on to dismantling the threaded cartridge. The procedure will be as follows:

• we unscrew the threaded type mount using the L-shaped hexagon;
• insert a 10 mm key into the cylinder with the short side, after which we firmly fix it with cams;
• we start the screwdriver at low speeds, and immediately turn it off so that the free part of the hexagon hits the support.

As a result of all the actions taken, the thread fixation should loosen, after which the clamping cylinder can be pulled out of the spindle without much difficulty.

It happens that the withdrawal cannot be carried out by any of the above methods. Then the device should be disassembled, and, depending on the manufacturer and model, perform certain actions. Let's show the disassembly process using the example of a Makita screwdriver.

Owners of such models have the need to unscrew the chuck, where a threaded fixation is used with a screw-type mount that performs an auxiliary function.

Then you need to unscrew the screw, and then press the shaft stop button. After that, we wrap the screwdriver body in a rag and fix it in a vice. We press the hex key in the cams and hit it with a hammer so that the cylinder can be removed.

How to dismantle a screwdriver chuck

This is done not only when there is a need for urgent repairs. This is also done for service. Parts must be constantly lubricated and cleaned. Moreover, this should be done, even if the screwdriver has not been used for a long time. If maintenance is not carried out regularly, the tool can quickly fail.

The chuck can be unscrewed in various ways. The choice of method depends on the design of this unit and the method of its fastening.

Sleeve equipped with screw fastening

In such a chuck, the screw is located between the cams. You can get to its head only when the cams are open. Taking a Phillips screwdriver, twist it clockwise to unscrew it. After that, a hex key is inserted into the cams and they begin to move in the opposite direction. Movements should be made quite sharply. At the first moment, you will have to make a fairly significant effort. If the force on the wrench is insufficient, you can use a hammer.

Morse taper

If there is a Morse taper, the shank is knocked out of the tapered hole with a hammer. If this fails, the tool is disassembled, the shaft is removed from it together with the chuck. The clamping cylinder is then removed using a pipe wrench. As part of this assembly, conventional nuts are rarely used.

Threaded connection

For work, you should use the L-shaped hexagon 10 mm. This key must be inserted into the cams, firmly clamped and turned. To make this operation more convenient, the hexagon should be securely fixed in the hand or in some kind of support. And then turn on the drill at low speeds for only a fraction of a second. As a rule, this is sufficient to loosen the connection and remove the liner without hindrance. If this method fails, the instrument is disassembled in order to get to the joint from the other side.

What it is?

The chuck serves as a seat, a holder for the main working element of a drill or hammer drill. It can be not only a drill, but also a concrete drill for tools with an impact function, a special nozzle in the form of a Phillips or flat screwdriver. There are special drill bits designed for grinding, cleaning various surfaces. They are mounted on a round or multi-faceted pin, which also fits into the chuck.

Drill chucks differ in design and method of installation on the tool and are divided into three types:

• conical;
• gear-crown;
• quick-clamping.

Cone chuck

It was invented back in 1864 by the American engineer Stephen Morse, who also developed and proposed the use of a twist drill. The peculiarity of such a cartridge is that the clamping of the working element occurs due to the mating of two shaft surfaces and a separate part with a bore. The surfaces of the shafts and the hole for installing the drill have equal taper dimensions, the angle of which ranges from 1 ° 25'43 "to 1 ° 30'26".

The angle is adjusted by turning the base of the mechanism, depending on the thickness of the element to be installed.

Gear-ring design

A more common type of cartridge for hand held power tools for home use. The principle of such a cartridge is simple - a thread is cut at the end of the pin emerging from the drill, and the cartridge is screwed onto it like a nut.

The drill is held in the chuck by three tapered petals centered on the chuck in the collet. When the nut on the collet is turned with a special wrench, the petals come together and clamp the shank of the drill or other working element - a whisk for a mixer, a screwdriver bit, an impact chisel, a tap.

Keyless chuck

It is considered the most convenient option. This is the latest technological modification of this device in terms of the time of invention. It is used in almost all modern models of well-known manufacturers of drills.

The working cutting or other element is also fixed by special petals, only a wrench is not required to clamp them. The fixing lugs are clamped by hand - by turning the adjusting sleeve, on which corrugation is applied for ease of scrolling.

Video: How to Unscrew a Jammed Chuck on a Screwdriver

Bosch and Interskol

How to unscrew a cartridge on a Bosch screwdriver? The difference between the Bosch and the Makita model is that the former has an autolot. The element is replaced in the same way as in the previous case. clockwise.

Features of the Interskol screwdriver analysis:

1. To do this, insert an eight hexagon shape into the cartridge and lock it.
2. Make sure the battery is fully charged and the angle of the key is in the down position (parallel to the handle).
3. Then select the drilling mode and rotate back.
4. Place a hard object (rock, light weight, or dumbbell) down on the hex wrench and pull the trigger.
5. The cartridge is unscrewed with heavy clockwise movements.

How to unscrew a cartridge in Milwaukee?

This product is of high quality, reliable. There is also an additional feature. fastening with a screw. When changing the cartridge, you first need to remove this screw, the instructions do not allow you to do it yourself. Also, this machine is equipped with a cartridge with a fastening function. This includes a fine pitch and 9/16 inch thread. It is recommended that this item be changed at a specialized repair center.

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

1. It is necessary to open the cams and unscrew the screw, which consists of a left-hand thread.
2. If that fails, use a punch to lightly hit with a hammer to move the thread.
3. Then follow the hex wrench eight to press the fists.
4. Switch back.
5. It will take a few seconds to get started. In this case, it is necessary to put a solid object on a turnkey basis.

Typically, after this procedure, the cartridge is unscrewed, but it may be necessary to insert a flat screwdriver on the side of the element and gently displace the filament. In rare cases, it is necessary to completely disassemble the device by removing the gearbox with the spindle.

Hitachi and Bison

Both devices are similar. Unscrewing the cartridge must be disconnected from the shaft. It's pretty easy to do. Standard steps should be taken. Turn the screw clockwise and then remove the cartridge.

How to unscrew the Makita 627 ld cartridge?

Actions are performed in several stages:

1. In this case, you need a flat head screwdriver.
2. You will need to turn the screw counterclockwise.
3. Hexagon eight to click on the element.
4. Pull out the cartridge with little effort.

Other parts from foreign manufacturers (eg Deko cartridges) are also suitable for this model. You just need to reconnect the parts in reverse order.

How to unscrew the cartridge for Divolt-220 and Nikkey

This tool works with the network. It is equipped with a key holder. To remove such an item, you must:

• clench your fists as deep as possible to open the bottom;
• unscrew the screw (on the left-hand thread);
• to prevent the spindle from rotating, lock the element (using a wrench or wrap the tool with a cloth) and fix it in a vise;
• then unscrew the screw;
• remove the cartridge with little force.

If the attempt fails, remove the housing cover and secure the spindle inside.

Important note. Be sure to turn off the device before replacing the item. You don't need to include a tool for this process.

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

Recommendations and Tips

How to remove a jammed cartridge with a screwdriver? To do this, apply a grease such as WD-40. Wait five minutes for it to penetrate all holes and grooves. You can use a hair dryer to get it done faster. Warm the cartridge with it, and then lightly hit the cams with a hammer from all sides.

It is important to note that unscrew the cartridge only after the device has cooled down. Removing the element from a heated tool will be very difficult as the elements are securely attached to the socket.

Why you need to remove the cartridge

All the drills, screwdrivers and hammer drills for fastening of working parts are equipped with chucks, the principle of operation of which is based on a cam mechanism. Bits, drills and other accessories are fixed in the chuck by clamping them between three and sometimes four connecting jaws. The cams are of a tapered design that only moves longitudinally when the adjusting sleeve is turned. There are two types of cartridges:

- key;

- quick-clamping or manual.

Key chucks fix the working tool by using a special key, but on quick-clamping drills, manual efforts are enough to secure the working nozzles. Depending on the quality of production of the drill, as well as the frequency of its use, the service life of the chuck depends. The jaws are worn out, so the chuck is not able to fix the working attachments. The cams cannot be repaired, so the need to remove the chuck is to replace the worn out part and thereby reanimate the drill.

Key chuck for a drill with a special key

The chuck is rarely removed from the tool when a drill or bit is jammed in it. Turning the chuck relative to the tool shaft is also a negative consequence, which can only be eliminated by unscrewing the chuck and replacing it with a new one. Both key chucks, in which the jaws have a shorter service life, and key ones, which differ from the first in the maximum tightening force of the working nozzles, are subject to replacement. Impact drills are equipped only with key drums, since fixing the working tool on them is much more reliable.

Keyless chuck for drill

Choosing a new instrument

If the old cartridge could not be carefully disassembled and repaired, then it is necessary to replace it. We'll have to choose a new one. It should be noted that different types of cartridges can be installed in the design of screwdrivers. They are key or keyless, as well as quick-clamping. The key product is different in that the clamp on it can be done with a better quality. Keyless chucks are not inferior in this parameter, but they have to be changed quite often, since the clamping mechanism very quickly becomes unusable.

If during the removal of the chuck it is necessary to frequently change the tooling, it is preferable to select the quick-clamping option, since if you replace the old part with it, you can save time on this procedure. When using large diameter tooling, it is best to purchase a key chuck.

Drill device and types of cartridges for it

So, the drill consists of:

• an electric motor creating a rotation movement;
• a mechanism transmitting this rotation to the clamping device;
• and the actual clamping device for the drill. It is this device called "cartridge" that interests us.

Before figuring out how to remove the cartridge from the drill, let's find out what they are - the algorithm of actions depends on this.

The most common gear-crown. To fix it, a special toothed key is used, inserted into the hole on the chuck. The teeth of the key engage with the teeth of the rim of the chuck and, when the key rotates, they strengthen or weaken the clamping of the jaws (cams) of the chuck.

Otherwise, such a chuck is called a drill chuck, and is considered one of the oldest drill clamping mechanisms in use today.

Then there are keyless chucks - with one, two couplings, a fixing ring. They use collets - cone-shaped elements, consisting of three or more parts. Moving along the collet axis, the coupling compresses the "petals", thereby securing the drill in them.

Couplings (clips) are metal and plastic, regular or reinforced, with and without automatic locking.

In fact, the drill chuck is a separate unit connected to the main drill mechanism by a shaft. The connection is made using a thread or a tool taper (the so-called "Morse taper").

An indication of a particular type of attachment can be found in the instructions and / or on the drill body. For example, the designation 1.5-15M13x1.2 - the first two digits mean the permissible diameter of the drill shank (or other tool inserted into the chuck), M13 is the diameter of the thread (metric) connecting the chuck to the shaft, and 1.2 is the pitch of this thread ... If the designation looks like 1.5-15 UNF 1/2 "- we are talking about an inch thread.In domestic drills, a metric thread is used, in imported ones (not all, of course) - an inch.

If a cone is used to connect the shaft to the chuck, the letter B is present in the marking (for example, B10 - tool cone, shank diameter 10 mm).

Considering that different companies label their products differently, this difference should be taken into account. So, for a Makit drill-driver, the marking will look like this: BDF456. B is present, that is, the chuck is fixed on a cone, D is the type of tool, drill, and F is additional features, in this case a screwdriver.

Consider the models of the most significant manufacturers on the market - Bosh, Makita, Interskol - what cartridges they use and how to remove these cartridges.

Repair methods

Experts recommend, regardless of why the screwdriver is jammed, what to do first: in the inner cavity of the chuck, including the surface of the cams, introduce a universal grease like WD-40. After 10-15 minutes, use a rubber hammer (or an ordinary one, through a gasket) to tap the chuck and the cams with moderate effort.

If the bit is jammed in the chuck of a Bosch, Texas, Praktika, etc. screwdriver, then (after lubrication) the use of two adjustable wrenches effectively solves the problem. One clamp the base of the cartridge, the second gently rotate its upper part. In order to avoid damage to the surface and the node itself, you should use soft but dense skin-type pads.

If your efforts have not led to anything, with minimal financial costs and extremely quickly the functionality of the tool will be able to restore the specialists of the workshops of the company "Udachnaya Tekhnika Servis".

The presence of various technical devices at home is simply necessary. We are talking about tools such as a drill and screwdriver. They are indispensable in the course of various small household chores. But like any technique, they can also malfunction and break. For example, in a screwdriver, one of the most unstable parts is the chuck. In this article, we will consider how to remove and replace the cartridge in this device.

How to remove?

Since all types of drill chucks have their own design features, their dismantling also involves performing different actions. You will also need special tools.

In general, the procedure is not difficult and is quite doable on your own at home.

Conical

The method of fastening the cartridge by the Morse method is one of the most reliable, but at the same time it does not provide for complex manipulations. The design perfectly withstands power loads along the axis in both conventional drills and tools with an impact function. That is why it is so widespread in manufacturing plants.

The cartridge is dismantled in several ways.

It is necessary to strike with a hammer from below on the chuck body

The main thing is that the blow is directed along the axis towards the seat of the cutting element - the drill.
Disconnect the chuck by wedging surfaces: insert, for example, a chisel into the gap between the chuck and the drill body and, knocking it with a hammer, carefully remove the shaft
In this case, it is very important not to hit in one place, so that the shaft does not skew: gradually pushing the chuck shaft, the chisel must be inserted in different places.
Use a special puller such as the one used to remove the bearings.

In most hand drills with taper chuck, the shaft bearing is mounted inside the tool body. But there are also models where it is located outside

In this case, the removal should be done as carefully as possible, otherwise there is a possibility of damage to the bearing. If the shaft has become too stuck and cannot be removed, do not hit it with a hammer with all your might

Gear-crown

The girth gear chuck is screwed onto a pin built into the drill.Accordingly, to dismantle the device, you just need to unscrew it in the opposite direction, but you should take into account some of the nuances. The peculiarity of the threaded fastening of the cartridge is that the thread on the pin emerging from the drill is right-handed, and on the cartridge itself it is left-handed. Thus, during the operation of the tool, the chuck, turning clockwise, itself is automatically screwed on and tightened on the shaft.

This feature guarantees its reliable fixation on the drill, eliminates backlash and spontaneous reset of the element from vibration. This specificity of the fit of the cartridge should be taken into account when removing it - during the operation of the drill, the cartridge is screwed onto the axis until it stops, the thread is clamped with maximum force.

Therefore, in order to spin it back, you will need the following tools:

• wrench;
• Phillips or flathead screwdriver
• hammer;
• special wrench for clamping drills or chuck wrench.

Let's consider the order of performing actions.

1. Using a special wrench for clamping the cutting element (drill), turn the collet counterclockwise to the stop and thus lower the locking lugs.
2. Inside the chuck, if you look into it, there will be a mounting screw that holds the chuck on the seating shaft. It is necessary to unscrew this screw with a screwdriver, holding the shaft with an open-end wrench of the appropriate size. The head of the screw can be either a Phillips screwdriver or a flat - depending on the manufacturer. Therefore, it is best to prepare both instruments in advance.
3. Then, firmly fixing the collet in one position (holding it with the teeth of the clamping nut), unscrew the chuck shaft with a wrench.

Holding the drill with one hand, break the thread with light hammer blows on the collar. You can try to carry out the same operation without a vice - insert and clamp a square with a long handle in the collet (to increase the lever) and, firmly holding the shaft with an open-end wrench, turn it sharply counterclockwise.

Keyless

Depending on the manufacturer and model of the tool, keyless chucks are attached to the drill in two ways - they are screwed onto a threaded pin or fixed on special slots.

In the first case, it is removed in the same way as the gear-crown device:

• lower the clamping lugs;
• unscrew the locking screw;
• clamp a hexagon or a knob in the chuck;
• After fixing the base of the shaft, unscrew it with light hammer blows on the hexagon.

The second option with slots is used in modern devices and does not provide for the use of any tools for removal. Everything is done by hand in automatic mode easily and naturally. You just need to firmly grip the upper ring of the cartridge with your hand, and turn the lower one counterclockwise until you hear a click.