How To Replace A Cartridge With Bosch Drills • CIMFLOK.COM

How to remove and change the cartridge with an electric drill

How to easily remove a drill or screwdriver chuck

Characteristic features of clamping mechanisms for a drill

A significant part of the tool of world brands Interskol, Makita, Bosch is equipped with cam devices. They are based on a hollow body in the form of a cylinder. On the surface of one of its sides, a component moves in the form of an adjusting ring, a sleeve. During the rotation of the right and left, the cams approach or move away, and the drill is fixed. The device is mounted on the shaft with a specialized fastening connection in the form of a thread or on a special conical surface.

Cam chucks on a drill can have:

turnkey simple execution;
quick clamp mechanism (BZP).

The keyless chuck has a primitive design, it uses a specialized iron or plastic sleeve with knurling, corrugation. The main difference between this type of device is the absence of a clamping key; instead, the lips of the drill are fixed by the outer shell, which is easily unscrewed. Not paying attention to the ease of operation of the BZP, it has the following disadvantages:

low clamping force, not providing a good clamp drill;
low resistance to dust;
the probability of damage to the mounting mechanism.

BZP received the greatest distribution, because it makes it possible to quickly make a replacement drill. These cartridges are equipped with highly professional electric drills Bosh PSB, Bosh GSB, Makita, DWT, Hitachi. But it is not recommended to buy cheap models, like percussion instruments equipped with these devices, because their service life is small.

To work in difficult conditions, cam clamps are used, the fixation of the drill in which is done with a specialized key.

Another type of nozzles is SDS collet chucks. The presence of 2 grooves in the shank allows you to attach the drill with a locking ball. There are 4 grooves on the body. One pair is used for guide wedges, the other performs snap fixing. The spindle locks automatically after it is put in place.

Threaded Clamp Replacement

You need to remove the mechanism in this order:

The cams are thrown down to guarantee free access to the head of the internal self-tapping screw.
A screwdriver must be used for a threaded fastener. The locking screw is unscrewed from the spindle. Because it has a left-hand thread, the rotation force is put clockwise. If the course is difficult, then to make it easier to unscrew, you can tap the screw with a hammer through the extension, then remove it from the axis.
The cartridge has a right-hand thread, thanks to this, it turns like an ordinary nut counterclockwise. If difficulties arise, use two keys. Rozhkov fix the spindle, and gas. try to unscrew the cartridge.

Disassembly can be implemented using the hexagon inserted into the cams. The larger its dimensions, the greater the applied force. A wrench is used to hold the spindle.

If you can’t remove the clamping device, then to guarantee access to the spindle, recessed deep in the case, you will have to disassemble the drill. After replacing the cartridge mechanism, the structure is assembled in the reverse order, but the process is very easy.

The damaged screw is removed and a worthy replacement is found. But you can choose a cartridge adapter for a cam punch, which includes a suitable screw.

Removing the cone type nozzle

The procedure in this case will be much simpler, and replacing the cartridge takes less time. Work is performed in this order.

To remove the fastening mechanism of the cone type, the drill is set up vertically, directing the drill down.
They begin to tap equally on the entire surface of the cartridge with a hammer. Under the influence of the applied efforts, he will begin to leave the seat.
After removing the clamping mechanism, the cone connection is cleaned with a fine sandpaper.
Having installed a new cartridge in exchange for it, fixation is carried out by hammer blow from above.

Nowadays, many models of electrical equipment are equipped with clamps such as SDS. They do not stand out with high accuracy, but they proved to be excellent during work in difficult conditions, when turning is accompanied by a blow. To make a hole of the right size in any material, a specialized nozzle is used. The necessary attention is paid to the selection of the drill, its correct sharpening.

The drill can not withstand lateral loads, due to this it is not suitable for milling. She needs regular care. cleaning from dust, lubricating moving parts. Fulfilling such requirements, it is possible to increase its service life, and during repair work or replacing a cartridge that has become unusable, it will not be difficult to implement all the necessary operations with your own hands.

Drill chuck: how to change, disassemble, unscrew

How To Replace A Cartridge With Bosch Drills

An electric drill is an indispensable instrumental attribute of both a home master and a professional. Without this tool, it is difficult to carry out any work related to the production of something, as well as installation, dismantling and so on.

Breakage of a drill, even of a famous brand, in the end, when something happens. And one of the most common options for breaking this power tool is the failure of the cartridge: both key and self-clamping.

Reasons for replacing the drill chuck

Sooner or later, any part, assembly or any mechanism becomes unusable.

In modern drills, such as Makita, Interskol, Bosch, and so on, the drill and other cutting tools, as well as all kinds of attachments, are fastened with a cam type device. The cam mechanism is 3 or 4 cams, by means of which the tool is held in the drill chuck. If the device is quick-clamping, then the mechanism is tightened by hand, and if the key. with a special key.

There are also collet devices, but they are more applicable in production for metalworking. All kinds of tools necessary for work are clamped in them.

Reasons to replace:

Beating during rotation. This indicates wear on the cams or front shaft bearings.
Cranking on the shaft. The cause is damage to the thread if the chuck is threaded, or wear of the tool cone.

In both cases, its replacement is necessary.

Beating is a harmful and unsafe phenomenon, it can be characterized as follows:

The cutting tool in the drill is poorly held, or some kind of tooling.
Drills are wedged (in the case when the cone is worn out).
The holes are irregularly shaped.
Drill shanks wear out.

How to remove a cartridge from an electric drill

The chuck can be attached to the spindle as follows:

Cone mount. When a Morse cone (instrumental cone) is used. In this case, the shaft is made in the form of a cone, is well ground and a minimum effort is required for its attachment. Example of marking: B10, where B is the symbol of the cone, and the number 10 is the diameter of the shank of the cutting tool. Such fastening is most often found in screwdrivers.
Threaded mount. The thread is metric and inch. If the marking M13 is stamped on the cartridge case, then the thread is metric, 13 mm. If it is inch. UNF with a diameter of ½ inch.

However, in order to protect the user 100%, the manufacturer of imported drills also fixes the cartridge with a screw, which serves as a stop and reliably fastens it to the shaft.

The screw has a left-hand thread and very often, when inexperienced people repair the drill, the slot on the screw for a screwdriver is torn out of ignorance, assuming that there is a standard right-hand thread. therefore, you need to unscrew it clockwise.

Knowing the design features of your own drill, removing the cartridge does not seem to be a big problem.

In order to change this item The following tools must be prepared:

Pipe wrench number 2.
The hammer is medium in size. Approximately 400-500 gr.
Spanners.
Caliper No. 1, 2 or 3.
A screwdriver with the desired shape and cross section of the blade.
Personal or velvet file.
Sandpaper.

This list shows the minimum tool set. It is very possible that during the work you need something extra.

Threaded connection

Procedure for dismantling:

Unscrew the locking screw counterclockwise.
Turn off the cartridge in the same direction. If there are grooves on the shaft, we use a wrench to fix it.
If the drill bit is jammed, then it is necessary to knock the cams from top to bottom with precise and light hammer blows.
The device is installed in the reverse order.

Having fixed that part of the equipment on which the cams are used with a pipe (gas) wrench No. 2, the shaft must be turned. The cartridge should easily loosen after such a "persistent" intervention.

Tool cone connection: dismantling step by step

Such dismantling is carried out using a hammer and a drift of non-ferrous metal: brass, bronze, aluminum, copper. However, hammers of this type are still found.

Soft metal will not cause snap damage in the form of nicks and deformations.

You must complete the following steps:

Hold the drill with the handle up.
On the back of the cartridge, gently tap around the entire circumference with a hammer.
After the device is dismantled, you need to clean the cone with fine emery cloth. Large nicks, if any, should be removed with a file.
A new cartridge is inserted into its regular place and is fixed by hitting a wooden hammer (mallet).

For old drills made back in the Soviet period, another method is applicable. In them, on the shaft, there is a rather large gap between the tool body and the chuck, and flats are made on the shaft.

Locksmiths generally acted as follows:

A key was inserted into these grooves.
With a hammer blow on the open-end wrench, the clamping tool was dismantled.

The method, of course, is not the safest, given that the key can fly off along an unplanned trajectory and cause injury. There is also a variety of drills, where a slot is made in the housing into which a wedge is inserted to knock out a cartridge. Such drills can have two cones: one in the cartridge, and the other in the drill. These tools are impressive in size and weight.

Cone drills are considered more accurate in critical drilling, as the Morse taper is manufactured with a high degree of accuracy.

In addition, the conical cartridge can be removed with a puller, since in each such drill, where there is not even a threaded hole for the locking screw, there is a through hole. And if you use a puller with a central pin and push it into this hole, then having fixed to its counterpart by the fact that it has hooks in the form of powerful hooks, you can also remove a tightly attached cartridge. Such pullers remove, for example, bearings.

Replacement for Interskol drills

Interskol drill is very convenient, has an ergonomic handle. Low price is also a frequent reason for customers to choose it.

Replacing the cartridge with Interskol drills does not present any special problems:

The locking screw is loosened. To do this, you need a powerful screwdriver with a cross blade. Before unscrewing, it is better to drop a kerosene screw under the screw or use WD-40 grease. This method is effective in that both of these substances are highly penetrating and can dissolve dried grease or rust. It must be remembered that damaging the slot of a screw is easy enough, as well as tearing off its head. And if this still happened, you will have to drill the screw with either another drill, or do it in the workshop, using a drilling or lathe. When drilling a screw, try not to damage the thread.
An L-shaped hexagon wrench with a size of 10 mm or more is clamped in the chuck with the short side.
A sharp blow to the long part of the key should “tear” the sticky thread from its place. Beat should be clockwise. Subsequent unscrewing is done by hand.

It is impossible to strike with a hammer on the cartridge itself: you can not only break it, but also deform the spindle. This will lead to the need to disassemble the entire drill and repair it already in a specialized workshop.

On some models, drills of this brand on the spindle (axis), on which the cartridge is mounted, have special grooves (flats) under the open end wrench. This allows you to securely lock the axis before unscrewing.

If there are no grooves, and the method with hitting the hex key did not help, it is best to partially disassemble the drill by unscrewing all the screws and removing the cover of the tool body.

You can fix the shaft as follows:

Use your palm to grip the large gear wheel and fan wheel. Work, of course, is better with strong gloves.
Unscrew the snap.

After removing the old tool, the installation of a new unit must be carried out in the reverse order, not forgetting to lubricate the threads of the spindle and screw.

It is highly undesirable to use Litol-type lubricants, since when the turn of the next change comes, the difficulties will be even greater than if the thread were not lubricated at all. This should be done with graphite grease or simply with engine oil.

How to remove the keyless chuck

This type of tooling was invented by Bosch. These types of devices are widely used in many drills from Bosch, Makita, Hitachi, as well as in screwdrivers. They allow you to easily and easily change the drills, which is especially convenient when working with a large number of drills.

You will need:

Phillips screwdriver or straight.
Hexagon wrench.
A hammer.

Further:

Unscrew the locking screw. Screws come in different screwdrivers.
Hold the hex key in the cartridge with the short side.
A drill or screwdriver must be placed on the edge of the table (workbench), so that the device does not lie on the table.
A blow of the hammer on the non-clamped edge of the hexagon causes a sharp blow. The direction is counterclockwise.

Step-by-step parsing instructions

Sometimes it becomes necessary to disassemble it for the following reasons:

Severe clogging.
The cartridge jammed.
Wear on the cams.

Practice shows that the simplest and most common way of disassembling is feasible with a puncher.

Step-by-step instruction:

Remove the boot from the punch.
Insert a small adapter.
Push the cams of the punch inward, unclenching the cartridge to the maximum.
Between the cartridge and the wall we lay some kind of cushioning material, a piece of structured polystyrene, for example, or rubber.
We press the punch along with the disassembled cartridge and shock absorber against the wall.
We turn on the punch, putting it in shock mode.
After a few seconds, the cartridge parts will be untwisted, that is, the cartridge is disassembled.
Now you should take out the cams and make a visual inspection.

If you used a drill to drill walls, then there is a high probability of dust, cement, small particles of brick and so on inside the tooling. It is necessary to remove all garbage, if necessary, rinse the parts with kerosene. Then, after wiping the parts, grease them with grease.

Important. do not change cams. In order to avoid this, you should use the marking, signing each of them, as well as the seats.

Next, do the following:

Push the cams forward.
We install a nut (consists of two crackers), with which a key can be used to untwist and twist the cartridge into place.
We hide the cams inside the device by unscrewing it.
The cartridge holder is installed in place.
We press in the clip. This can be done in various ways, for example, using a lathe. In this case, the front part of the snap is clamped into the machine chuck, and the back is tightened by the tailstock. A simpler “home” method is as follows: a massive metal plate is taken, on which the dismountable equipment is placed. A thick washer made of non-ferrous metal is placed on its upper part. Applying light blows with a hammer on the puck, we press the clip into place.

The unit is suitable for further operation.

Replacing and repairing a drill chuck

One of the common breakdowns in a drill is a malfunction in the work of the chuck fixing the drill. A defective cartridge must be removed and inspected. Having familiarized themselves with the mechanism and principle of operation of the cartridge, everyone will be able to independently decide on the fate of the part. to change or repair the cartridge. What are the cartridges? How are they arranged? How to remove an old cartridge, how to put a new one? What measures should be taken to repair the cartridge.

What function does the cartridge in a drill perform

The drill chuck is one of the main components of the electric drill mechanism. It serves to transmit rotational motion from an electric motor to a working tool. His task also includes fixing the drill so that when working, the maximum accuracy of hole drilling, reliable fastening and quick tool change are observed.

In any drill, the tool is fixed in the chuck

Types of Mounts

Engineers invented various design solutions for fixing cartridges. Depending on the method of attachment to a rotating shaft, cartridges are:

threaded. the cartridge is screwed onto the shaft thread;
conical. a cartridge with a conical shank is inserted into the reciprocal socket, held by the force of friction;
collet. the cartridge is put on the shaft and fixed with a screw.

Photo gallery: types of tool holders

Methods of fixing the working tool

All chucks clamp the tool between the cams (jaws). Three cams evenly approach each other, the tool is fixed strictly along the axis of rotation. According to the method of fixing the drill, the cartridges are divided into:

clamping. In them, the sponges are tightened with a special key;

Chuck jaws are tightened with a wrench

Keyless chuck wrapped by hand

Ratchet self-locking chuck

SDS chuck is used in powerful rotary hammers and drills

Replacing and repairing a drill chuck

Symptoms

The most common external symptoms of a cartridge malfunction:

the cartridge case flies off the gearbox shaft or the axis of rotation is arbitrarily shifted during operation;
cartridge cams wedge or fall out of the housing;
the drill bit is not clamped in or removed from the chuck.

In such cases, it is not only impossible to continue working with a drill, but also dangerous. Find out the cause of the problem and fix it.

If for some reason the cartridge has become unusable during operation, it should be replaced or repaired. Do not use a drill with a broken cartridge.

How to change a part?

The threaded fastening of the cartridge on the gearbox shaft is carried out using a thread with a short pitch and additional control fixation with a screw with a reverse (left-hand thread) in the outer end of the shaft.

Since when switching speeds and modes, the cartridge rotates in both directions, provides a rigid fixation of its working position.

To do this, when assembling the tool, an additional sealant is applied to all threaded joints, which, when dried, plays the role of an adhesive layer.

This should always be remembered when assembling and disassembling an electric drill. When repairing a cartridge, it is most advisable to use silicone-based sealants. this will make it possible to carry out current repairs with the least effort, as well as protect the metal from corrosion and oxidation when moisture gets in.

In order to disconnect the cartridge from the rotary mechanism, it is necessary:

Open cam clamps inside the chuck as much as possible to gain access to the control screw.
Loosen the fastening screw. As a rule, the slots of this screw are cross-shaped. Therefore, you should use a screwdriver of the appropriate configuration. Often during operation, under the influence of centrifugal forces, this screw is tightened in the seat excessively. Then you have to apply considerable effort to turn it out of the nest.

You can use a mechanical impact screwdriver, but very carefully. In case of damage to the slots on the screw, removing the cartridge will be much more complicated and not only the cartridge will have to be changed, but also the gearbox shaft. Among other things, such a “jamming” indicates that the sealant was not used in the previous assembly or was not given time to dry.

Using rotational movements counterclockwise, unscrew the cartridge housing from the threads of the working shaft. To do this, keep the shaft from rotating. There are several ways to achieve this:

Hold the shaft with one hand using an adjustable wrench, and unscrew the chuck with the other.
Remove gear housing and hold gears free of rotation by hand.

Video: how to easily remove a drill chuck or screwdriver

Video: How To Replace A Cartridge With Bosch Drills

In some models, special grooves for an open-end wrench are provided on the shaft to which the cartridge is mounted. In this case, unscrewing the cartridge is greatly facilitated. It is enough to insert the key into this groove and fix it in a fixed position.

If the attachment of the cartridge to the drill is tapered, then the procedure for disassembling changes as follows:

Release fixing screw inside chuck.
Secure the drill body in an upright position (for example, using a vice) so that the chuck is in the lower part.
Using an open-end wrench as a gasket, use a wooden or rubber mallet to knock down the cartridge housing from its seat.

It is necessary to strike with caution so as not to damage the cartridge housing and its structural elements.

The cartridge is mounted on the shaft after repair or replacement in the reverse order. When assembling, it is necessary to pay attention to the degree of rigidity of the fit of the conical recess in the cartridge body to the conical end of the driving element, as well as their axial relative position. Tighten the control screw inside the cartridge can only be in the case of a rigid fit and full coincidence of the longitudinal axes.

Silicone-based sealing compound is used to fix the internal control screw. Getting started immediately after assembly is not recommended. The sealant should dry and lock the screw in position. The drying speed of the sealant is usually prescribed on the packaging. Most often, this is approximately 1 mm per day, but since the thread pitch is usually a fraction of a millimeter, it is enough to withstand 10-12 hours until complete drying.

Thin layer silicone sealant

There are cases when, after repair and nozzle attachment to the conical spindle of the drive shaft, the cartridge starts to beat and vibrate during operation. This suggests that errors were made during assembly. You will have to disassemble the entire assembly again and deposit the cartridge again. Experienced craftsmen advise in this situation to warm up the cartridge to a temperature of 100-110 degrees. This heating can be achieved by dipping the cartridge case for several minutes in steep boiling water.

When heated, the metal tends to expand significantly. The taper hole of the cartridge will increase and, when cooling, it is better to sit on the shaft spindle. In modern household appliances, cone cartridges are used less and less. This is due to the fact that they were replaced by more convenient cartridges in operation, which are mounted on the thread.

Collet chucks are also not used in household appliances. The area of their “habitat” is high-precision drilling with thin and ultra-thin tools.

How to disassemble a cartridge?

After detaching the cartridge from the rotational shaft, the question arises of disassembly and repair. It should be noted that undertaking such repairs at home is not always justified. You may need special keys and accessories, which not everyone has. In addition, many manufacturers specifically make their products non-separable. Products made of molded plastic and expanded metal cannot be disassembled and assembled without changing the properties of the materials. To maintain the dynamic characteristics is unlikely at all.

If the cartridge is collapsible, these include cam chucks with a key and quick-clamping chucks, then proceed with repair only with all personal safety precautions, in well-lit and equipped rooms. After disassembling the cartridge directly and diagnosing the problem, replace the damaged part and reassemble in the reverse order.

Some masters advise when repairing to lubricate the internal mechanisms of the cartridge with heavy lubricants (such as "Litol" or "Graphite"). However, it is absolutely impossible to do this, since during operation the dust and chips generated during drilling will stick to the lubricant. Accumulated on the internal cavities of the mechanism, they will cause damage to the thread and other rubbing parts.

The only exception is the SDS cartridge, in which the grease is incorporated technologically, based on its design features.

Frequently encountered problems and solutions

The chuck vibrates or flies off the spindle axis

The most common problem is related to the unstable position of the cartridge case. If the cartridge begins to vibrate during operation or flies off the axis of the spindle, this means that it must be urgently repaired.

First of all, it is necessary to find out the reason for the cartridge to slip off the shaft. Most likely, it will be the development of a fixing screw inside the cartridge. From frequent sharp blows or lateral loads, the head of this screw may break off. And then the cartridge during operation is easy to unscrew, especially if you hold it with your hand.

The best solution is to replace the cartridge with a new one, but it is also possible to replace only the control screw. To do this, completely disassemble the cartridge, and then try to drill the broken off bolt and replace it with a new one. It is not always as easy as it seems.

Jaws clamp

The second common malfunction in the cartridge is jamming of the clamping jaws. Most often this happens when drills are inserted into the chuck, the diameter of which exceeds the recommended one. Or when during the repair, the working part of the cams is abundantly lubricated with grease. Over time, dust and debris entering the cartridge are cemented with a lubricant and break the rim of the thread or jam the course of the cams themselves.

This can be corrected by disassembling the cartridge and thoroughly cleaning the cams of accumulated debris. If the thread inside the mechanism is intact, the cartridge can be assembled and operated for a long time.

Many experienced craftsmen, when drilling in especially dusty conditions, protect the cartridge from debris by putting a half of a tennis ball on the drill.

The long life of the tool depends on its proper operation and regular maintenance. If the tool breaks, you cannot work with it. This is especially true for household electric drills with clamping chucks. a drifted drill can cause injury. Remove the defective cartridge and put a new one completely within the power of the home master. Cartridges for household appliances are not always subject to repair, so it is recommended that they be scrapped or turned to professionals.

How to remove a cartridge from a drill: methods of fastening and dismounting

In the tools of any home master, a drill must be present. True, sometimes it becomes necessary to remove a cartridge from it. As a rule, such a problem arises when the device breaks down.

Any craftsman who understands at least a little bit of technique will be able to complete this task. But for a person who has never encountered this, it can be a big problem. To easily remove the part from the drill, you first need to study the principles of its fastening, and only then proceed with the replacement.

Cartridge classification

Exist several of their varieties:

Keyless types;
Collet SDS devices;
Cam types.

In quick-clamping elements, changing the bit or drill will turn out in seconds, without using any additional tools. They are divided into single and double coupling types.

In the latter version, to attach the drill with one hand, you have to hold the sleeve, and the second screw the other. In one-foot cartridges there is a shaft locking system that is triggered when replacing equipment. The disadvantage of such products is low fixation strength drills. In addition, the use of plastic parts significantly increases the risk of damage to the cartridge.

It is better to put cam cartridges on percussion drills and perforators. They are stronger, so they are often used to work in difficult conditions. In such products, plastic elements are not installed, and the fastening of snap-ins is carried out with a special key.

There are also collet SDS cartridges that were created in the 70s of the last century. There are two grooves in the shank of this design, the size of which is 10 mm.

In this system, part of the drill has to be screwed into the cartridge by 40 mm. It is fixed with locking balls. In addition, in the design there are 4 grooves, 2 of them are fixing, and the rest are used for guide wedges. The spindle of a device equipped with this design is automatically locked immediately after installation.

Mounting Methods

In any drilling tool, the chuck on the shaft is fixed by two methods: on the cone and using a threaded fastener.

In the latter embodiment, there is an inch or metric thread on the inner channel and shaft of the drill. In this situation, when repairing, many often have the question of how to change the cartridge for a drill. You can find out the type of thread and its characteristics on the body. For example, if 1-15M13x1.3 is knocked out, then it means:

M13. diameter metric thread;
1.3 is her step;
1 and 15. the maximum and minimum size of the drill shank.

When inch threads are used, the UNF designation is marked. Therefore, before changing the product, it is necessary to check whether the mounting dimensions correspond to the marking. Now almost all drills have an inch thread.

For tight connection, a locking screw is mounted on the shaft inside the device. It has a left-hand thread, in other words, it should be unscrewed clockwise.

Another fixation option involves application of morse cone. The end of the motor shaft is made in the form of a cone. The same conical part has an internal channel. Install the cartridge on the shaft cone. These elements are marked as B 10, B 12, B 16, and also B 18. A particularly similar method is popular in screwdrivers.

Dismantling the threaded chuck

To remove it you will need a screwdriver. She loosens a screw that is screwed into the tool spindle and installed inside the product. Then he twists from the spindle. As mentioned above, the internal screw has a left-hand thread, therefore, it rotates clockwise. True, the cartridge unscrews counterclockwise, since it, on the contrary, has a right-hand thread.

If the screw does not want to loosen, tap on it. through a screwdriver with a hammer. There should not be any difficulties with the cartridge; it can be easily twisted. Although in case of difficulties, you can use a wrench and gas wrenches. Attach the spindle to the drill first, and grasp the chuck last.

In addition, when the chuck operates on the chuck, a thicker hexagon can be installed to invert it. You also need to fasten the spindle with a spanner. On most modern battery-powered drills, additional attachments are not required to secure the drill. However, changing the cartridge to them is very difficult.

When this doesn’t help to remove it, disassemble the tool body. Thus, it is possible to reach the spindle, since it is hidden when assembled. Then everything is collected back, but without the use of keys.

What should I do if the internal screw is damaged during the replacement process? In this situation, it is better to purchase an adapter for a cartridge for a cam type punch, since a screw is included with it.

How to replace a conical instance?

Difficulties in removing the element mounted on the shaft cone should not appear. You can use a special device that is used to replace bearings.

But the easiest way is to place the tool vertically, while the drill will look down. Then you need to tap gently over the entire surface with a hammer until the cartridge breaks out of engagement. If necessary, grinding is performed. The new part is inserted with light strokes from above.

Drill change in drill

Often due to excessive load or improper fastening, the drill is capable of jam cartridge, in the usual way to get it will not work. What to do in this case? First, just try to cool the part. Quite often, this is enough to relax the fists and pull out the drill.

You can go the other way. To relieve jammed equipment will help tapping the fists. To do this, in the vice should fix the free edge of the drill and attach wooden plank to the cartridge. It is through her that tapping is performed. The chuck will loosen its grip from vibration and the drill can be easily removed. over, this method is suitable for owners of quick-clamping and classic fasteners.

But sometimes it is impossible to remove the tool without using grease. In particularly difficult situations, it is possible to solve the problem only after immersing the cartridge in vegetable or engine oil. Keep the product in liquid for about an hour. If you combine the methods, then removing the stuck drill will be much faster.

Drill chuck: how to remove, replace, disassemble. video, photo

Among home craftsmen, the most common cartridges for a drill of two types are key (gear-crown) and quick-clamping (BZP). The features of the operation of these cartridges we will try to make out in this article and comprehensively cover all the main nuances and difficulties of working with them.

The most common for household drills and screwdrivers are gear-crown and keyless chucks

The main types of cartridges for a drill

According to their design, drill clamps are divided into two main types:

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

Varieties of drill chucks

Clamping cam chucks mounted on modern drills make it possible to reliably fix a tool whose shank diameter is 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 chuck of the BZP category, it takes only a few seconds, without the need to use a special key. The tool shank is clamped by manually rotating the adjusting sleeve, on the outer surface of which a corrugation is applied, which facilitates this procedure. To regulate the mechanical effect created on the tool shank, a special locking device is provided in the clamp of this type.

To fix the drill, hold the bottom sleeve with one hand and tighten the top sleeve clockwise with the other.

The most significant drawbacks of the BZP should include the fact that in those cases when the elements of its mechanism wear out, it does not sufficiently reliably fix the shanks of large diameter drills. This causes the tool to rotate during operation.

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

The diameter of the shank of the nozzle clamped in the mini-cartridge depends on the caliber of the collet

The cartridge for a mini-drill installed on compact drilling devices is also very popular. The latter are actively used by masters of jewelry. The mini-chuck belongs to the category of quick-clamping chucks for a screwdriver or light drill. Such a small cartridge, made mainly of brass, is used to fix tools with a shank diameter in the range 0.1–4.5 mm.

Design and features of gear-crown cartridge

The classic drill chuck is a collet or cam type clamping device. They can clamp not only various tools with a round shank, but also cylindrical workpieces for their further processing. The main structural elements of clamping cam chucks are:

cylindrical body;
an adjusting ring or sleeve rotating on the outer surface of the housing;
cam mechanism or collet installed in the inner part of the device.

Design of a cam (gear-crown) cartridge with a key

In turn, the collet mechanism, the elements of which are made of hardened steel, consists of three absolutely identical cams, which, when the adjustment ring or sleeve rotates, simultaneously approach each other, thereby ensuring a reliable clamping of the tool shank. In the first models of cartridges for mechanical drills, the collet cams converged due to the rotation of the adjusting wheel, now the adjusting sleeve is used for this.

On one side, the drill chucks are installed on the shaft of the equipment used, and on the other, a tool is inserted into them that will be used for processing. Clamping cam chucks are used mainly for fixing the following tools in them:

drills;
milling cutters;
taps with small shanks.

The drill chuck is designed to clamp nozzles with a cylindrical or hexagonal shank

How to remove a threaded chuck

The question of how to remove the cartridge from the drill, which is fixed on it with a threaded connection, arises quite often among home craftsmen. Such a clamp must be removed taking into account that it is installed using a non-standard left-hand thread.

The threaded element of the clamping device is located in its inner part; therefore, it is first necessary to maximally extend the clamping cams, which will provide access to the fixing screw, which is unscrewed using a conventional Phillips screwdriver. In drills without such a screw, the cartridge is simply twisted from their shaft without carrying out the preparatory work described above.

The head of the fixing screw can be cross-shaped, with a straight slot, under the hexagon, or even an “asterisk”

A screw with a left-hand thread, with which a threaded chuck is fixed to the drill, can wear out over time. To restore the reliability of such a connection, you can do the following:

insert a Phillips screwdriver into the head of the chuck screw on the drill;
with light hammer blows, screw the screw into the threaded hole.

Such actions will not harm the mounting unit of the drill, but will allow the clamping device to be fixed on it more accurately and reliably.

The replacement of a threaded type cartridge with a drill can also be done with a 14 key, which greatly facilitates this process. In order not to make mistakes when you are going to disassemble a cartridge of this type, you can first get acquainted with the theoretical material on this topic and watch the corresponding video.

Replacing and disassembling a drill chuck

In the question of how to replace a worn cartridge with a drill, there is nothing complicated. To do this, just purchase the appropriate clamping device, remove the old from the drill and install a new one on it. It should be borne in mind that two types of cartridges can be installed on both the conventional and the mini-drill:

with conical connection;
threaded.

Cartridges, for installation on the 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 marking, which is mandatory on it. Such clamping chucks can be marked as follows:

Marking a threaded chuck

The interval 1.5–13, which is present in the designation data, indicates the minimum and maximum diameters of the installed cutting tool. The rules for replacing the chuck with drills suggest that the new clamping device should have a marking that is completely identical to the designation of the old one.

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

Marking a Morse Taper Chuck

To replace a cartridge of this type with drills, you just need to pick up the clamping device with the corresponding marking and insert its landing part into the conical hole of the drilling equipment. To navigate in this marking is quite simple: the letter “B” means that it is a cartridge of the cone type, and the figure indicates the diameter of the lower part of the bore hole.

Removing a cone-type chuck from a drill is as simple as installing it. In order to perform this procedure, you just need to knock the clamping device out of the drill’s landing hole, for which a regular hammer is used. You can also get acquainted with the details of installing and removing the conical chuck of an electric drill by watching the corresponding video.

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

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

When disassembling a cartridge, it should be considered what type it belongs to. Focusing on instructions or videos, you must perform all the steps to disassemble such a device as carefully as possible so as not to damage its components. After all the procedures for the maintenance or repair of the cartridge elements for the drill are completed, it should be reassembled in the reverse order.

If the structural elements are very worn out and it is not possible to restore them, it is better to replace the entire mechanism, which will be much cheaper than repairing it.