How to remove and change the cartridge
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 proven cartridge removal methods, described below:
- Unscrew the threaded fastener by means of an L-shaped hexagon, which is probably found in every owner. Next, insert the hexagon (size. 10 mm), place the short edge into the chuck and fit tightly into the jaws. After that, it will start and immediately turn off the device at low speeds, so that the free edge hits the table slightly, so the thread will weaken and you can unscrew the cartridge.
- If the chuck is threaded with a locking screw, then:
Chuck fastening methods
Chucks are most often attached to the shaft in the following ways:
- By means of a Morse taper
- Threaded method
- With the fixing screw
The Morse taper is one of the easiest and most practical methods, which began to be used in 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 following method features a thread that is cut into the edge of the power tool’s working shaft.
The fixing screw is used to additionally connect the screw-in chuck to the shaft. Typically, a screw has a head for a Phillips screwdriver as well as a left-hand thread. It is necessary to unscrew the cams in the chuck to the maximum to see it.
How to determine the method of fastening to a screwdriver
The method of fastening is easy to recognize if you carefully examine the parts. The cartridge of the Morse taper variety will have the following inscription: 1-6 B10. This means that in the chuck, we can fix nozzles with a shank diameter of 1-6 mm, and B10. This is a pointer to the size of the Morse taper.
The cartridge, fixed with a threaded fastener, is marked:
- Metric thread (domestic products). 1.0-11 М12х1.25
- Inch thread (Foreign production). 2-13 mm ½-20 UNF
How to unscrew the chuck with 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, this 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, pressure and some wrenches.
Chuck Removal: Makita Screwdriver
Typically Makita brand power tools Equipped with a threaded mount with auxiliary fixation by a left-hand screw.
A number of actions should be followed:
- Unscrew the fixing screw (clockwise).
- Activate the spindle stop button.
- Wrap the body with a thick cloth and handed it over in a vice.
- Hexagon is constrained in the cams.
- They hit with a hammer on the free plane of the key, the chuck is scrolled and then removed from the shaft.
Removing the chuck: Bosch screwdriver
Bosch brand screwdrivers, usually equipped with a fixing screw.
- We put the key in the cams and tighten it for a couple of Clicks.
- The tool is placed on the edge of the table.
- Pressing the stopper button, remove the chuck retainer on the shaft.
- The cartridge is removed against the temporary move.
All actions require special attention and sequence during disassembly / assembly.
Having received theoretical knowledge in the types of cartridges, it will be easier for you to independently repair the screwdriver Interskol, Hitachi, as well as other manufacturers.
Removing the chuck from the Makita Screwdriver
Makita screwdrivers Equipped with a threaded mount and an auxiliary left-handed fixing screw.
We carry out the steps in turn:
- Unscrew the screw to the right;
- Press the button that stops the spindle;
- Wrapped the unit in a thick cloth and put in pressure;
- Fix the hexagon in the cams;
- Hammer blows on the end of the wrench will rotate the chuck and remove it from the shaft.
If you know the principles of dismantling described above, then the question of how to remove the cartridge from the Interskol, Bosch screwdriver, the second popular brand, will disappear by itself.
Fastening takes place using:
- Morse taper;
- Fixing screw.
The first mount was named after S.A. Morse in the 19th century. The connection occurs due to the coupling of the surfaces of the shaft and the cone with the hole due to the identical taper. The mount has become widespread due to its simplicity and reliability.
In the second type of connection, the shaft and the chuck are threaded. Alignment occurs by screwing the chuck onto the shaft.
The third type is the modification of the threaded mount. For reliability, the connection is fixed with a screw. It basically has a Phillips screwdriver head and a left-hand thread. You can see the screw only by fully opening the cams.
Types of cartridges
Now there are two types of this part:
The first view has additional categories:
- Double-clutch. It is possible to unscrew and twist with two hands, one clutch adheres, the second scrolls to remove the nozzle;
- Single-sleeve. All the operations described above are performed with one hand, this is facilitated by the shaft locking system during the removal of the nozzle.
A common characteristic of the quick-clamping versions is the tool change without the help of special tools.
The material from which the cartridge is made:
Plastic products are lightweight but not shock resistant. Quick-clamping variations are used both in everyday life and in production.
Cam types are more reliable, they have a greater shockproof potential, they are durable, of the minuses. The relative severity of the part.
The fastening of the cartridge is determined by visual inspection. The Morse taper is marked as follows. 1-6 B22. First digits. The shank diameter of the used nozzle, and B22. The actual size of the cone.
A threaded connection is also indicated by numbers and letters, for example: 1.0. 11 M12 × 1.25. The first part of the marking means again the shank diameter of the used nozzle, the second. Metric thread size. In imported screwdrivers, the value is indicated in inches.
How to remove a chuck from a screwdriver and replace it with a new one
For housework, a good owner must have a lot of tools. With frequent use, individual components of the units are subject to wear and tear and stop working. In this article, we’ll talk about how to unscrew the chuck with a screwdriver. A new tool on our market. In it, it is this part that is exposed to the greatest workloads and rapid wear.
- Types of cartridges
- Mounting types
- Fixing definition
This part is a hollow steel cylinder complete with a ring and sleeve. There are cams inside, they fix removable bits and nozzles. The part is put on the shaft of the unit. Therefore, it has a tapered surface or threads. The hole in it is intended for securing removable instruments.
Removing the chuck from the shaft Screwdriver
The part is disassembled with a 10 mm L-shaped hexagon wrench. The short part of the key is fixed in the chuck. Then the unit turns on, the free end of the key should hit the surface of the table or workbench. It can be removed by turning the key and then it should slide effortlessly along the thread.
Let’s describe another way to replace the chuck on a screwdriver. The first step is to open the cams. A screw can be placed at the bottom, this is an additional shaft fastening. Steep it clockwise. Then they clamp the hexagon and turn it with force in the opposite direction. It should be seen from the shaft. If the part does not give in, you need to hit the ends of the key with a hammer.
If these methods did NOT work, you will have to carry out a complete dismantling, take out the gearbox and retainer together with the spindle. The extended mechanism is fixed in a vice, the chuck is unscrewed from it with a pipe wrench. There are clamps with a recess for an ordinary wrench, it facilitates dismantling, but these copies rarely come across.
On the Morse taper, the part is knocked out of the body with a hammer.
In order to have a more complete picture of how to disassemble the screwdriver chuck, for review are presented below.
There are three ways to attach the clamping cylinder to the spindle:
- With carving;
- With a locking screw;
- Morse taper.
The first method involves the presence of threads on two touching parts.
The cylinder is screwed onto the shaft.
The screw is used as a reinforcing sleeve and shaft contact.
In this case, screwing also takes place, but the fixing component serves for additional fastening.
The screw is usually characterized by a left-hand thread and the presence of a “cross” head.
To see the element, you need to move the cams as far as possible.
Morse taper. A variant that has been used for over a hundred years.
Shaft surface is tapered, similar to the chuck.
Matching parameters of both tapers make it possible to reliably and quickly combine parts.
This option is used in many modern models (pneumatic, etc.).
How to remove a threaded chuck
Consider how to remove the chuck from a screwdriver, in which the cylinder is attached to the spindle using a thread.
- Unscrew the threaded fastener using the L-shaped hexagon;
- Insert a key (usually 10 mm) with a short part into the cylinder and securely fix with cams;
- At low speeds, turn on and then turn off the screwdriver; in this case, the free part of the hexagon must hit the support.
As a result, the threaded retention will loosen and the clamping cylinder can be easily removed from the spindle.
If the mount is very strong and all three methods do not work, then the tool must be disassembled.
How to remove the sleeve in this case is described above.
Situations requiring the disassembly of a drill or screwdriver arise when preventive work is neglected. Routine removal and cleaning of the “clamp”.
In addition, it is recommended to rest the instrument at least every 15 minutes.
Then the repair can be given, and you can protect yourself from unnecessary difficulties with removing the clamping device.
An internal thread on the chuck or a special cone is designed for mounting on a shaft. Structurally, the most wearing components are divided into three main types:
- Keyless (BZP)
- Gear-crown (key).
The most common option. BZP.
In this case, the shank is clamped by manually rotating the tool sleeve.
Clamping elements, which are installed on modern screwdrivers and drills, allow you to securely fix shanks with a diameter of 0.8-25 mm.
Perhaps the only drawback of a new product of this type. Higher cost for key sleeves.
It takes a few seconds to fix an element in a clamping device of the BZP type.
In this case, the help of auxiliary components is NOT required.
The blade of the adjusting sleeve is corrugated, so rotation of the cylinder is NOT difficult.
The pressure on the product shank is adjusted using a locking element.
Clamping parts wear out over time.
Therefore, the device of the BZP category cartridge implies a gradual weakening of the clamp.
Due to wear, the liner is unable to securely fix large diameter round shanks.
Disassembled self-clamping and quick-clamping models are:
- Movable jaws;
- Toothed nut.
What is a cartridge
The cartridge resembles a metal cylinder. The part is attached to the shaft of the screwdriver.
The purpose of the element. Fixing the working bits of fasteners.
How to choose a new cartridge
The chuck for the screwdriver is chosen based on a number of aspects. When choosing a suitable part, you need to be guided by the following recommendations:
- If the bits have to be changed frequently, quick or self-locking cylinders are best; otherwise, work will be slower;
- Gear-crown design. The choice of those who strive for maximum cartridge reliability; if the priority is 100% bit fixation, it is better to purchase a key cartridge;
- When choosing a part, you must take into account its characteristics; parameters are regulated by the corresponding GOST; the larger the clamping cone, the larger the number with which it is marked;
- The country of origin must be taken into account. Alphanumeric designations of foreign models differ from Domestic.
If it is difficult to independently determine the type of “clamp”, it is better to consult a specialist.
Wrong choice is equivalent, at least, Incorrect tool operation.
In the worst case, Not only repeated spending on a new cylinder is possible, but also the replacement of the entire screwdriver.
Design and features of the girth gear chuck
Unlike popular modern sleeves, this classic version requires the use of a special key. But in this case, a more reliable fastening is possible in all situations.
ZVP refers to the clamping sleeve of the cam or collet type.
They make it possible to clamp both products with round shanks and cylindrical elements. The main components of cam SGP:
- Cylindrical body;
- Adjusting sleeve or ring that rotates outside;
- Cam mechanism, which is mounted internally.
Collet mechanism is made of durable steel.
It consists of three twin cams.
When the sleeve or ring rotates, the latter form a single whole.
Due to this, there is a reliable fixation of products.
How to remove a cartridge
There are enough screwdriver manufacturers. Each has little secrets to analyze the cartridge mount. However, the general construction is NOT different. So, there are several ways to disassemble the cartridge.
Features of removing cartridges
The cartridge can completely disintegrate, becoming unusable. The cams in it are NOT capable of performing their task, it is impossible to clamp the drill. Or start backlash. The fragility of the element does not allow to hold the bat tightly. Drills constantly fly out during operation.
A thread is cut inside the chuck or there is a special cone for mounting on a shaft. Structurally, the element is divided into three types:
- Key or ring gear.
Keyless chucks are considered the most popular: the tail is clamped by manual rotation of the screwdriver sleeve. The main differences between the types are that in one case the attachments are fixed by hand, in the other. You cannot do without a key. Manual clamps can be a huge time-saver as the user does not have to pick up the key. The main purpose of the cartridge. Ensuring tight contact of the working bit and the rest of the mechanical parts of the tool. The key view handles this better because it is considered more reliable.
This type differs markedly from the keyless one. It’s all about an interesting function that allows you to additionally clamp the bit in the process of turning the screwdriver. You can distinguish between self and quick-release types by a characteristic click when relaxing or tightening the cams.
How to disassemble a cartridge
Over time, the mechanism becomes clogged with dust that forms during drilling. When scrolling, a characteristic crunch is heard, jamming begins. For repairs, disassembly of the screwdriver chuck is required. Farther:
- It will be necessary to dismantle the lower coupling (during assembly it is recommended to install it in the same position as it was. Marks can be applied for reference). A screwdriver with a thin blade or not sharpened knife is taken to pry the sleeve in a circle. Do everything neatly, and not deforming the plastic. The sleeve is held inside by the notch. After prying, when it comes off enough, you need to idle to pull the part up.
- The upper metal ring is removed. It is pressed onto the base of the chuck. The part will have to be knocked out. It is forbidden to knock on the cams, therefore a bolt of a suitable length will go into work. Everything is done slowly and carefully. The bolt is pressed by the cams, but not to the end to ensure free play. With weak blows of a hammer, the ring is knocked off the chuck.
You managed to disassemble the screwdriver chuck. All elements are recommended to be brushed and lubricated for correct movement. The head is assembled in the reverse order.
Removal method from a disassembled screwdriver
Sometimes the tool reducer fails. To repair it, the cartridge must be removed from the shaft. Process:
- Find and Unscrew the counter bolt inside the cartridge.
- Prepare the head (in most cases. 19 mm, but sometimes you have to select the size individually).
- Put the head on the back of the gearbox and fix it tightly.
- With the other hand, lightly unscrew the cartridge counterclockwise.
Everything, through simple shenanigans, it was possible to remove the element from the disassembled gearbox.
The design does NOT imply the function of clamping the tooling when the chuck is tightened. The bit is not fixed in it so reliably, unlike the self-clamping type. The keyless chuck consists of:
- Jamming element;
- Clamping ring.
The quick-release type is divided into two more types:
- Double clutch.
If the user buys the first type, then the box with the screwdriver must have a special blocker. It allows you to change tooling without turning the chuck. Double-sleeve types allow you to install a bit without additional devices, which is more convenient in conditions of frequent need to change the drill. The rig is removed by hand fixing one ring of the cartridge and scrolling the second.
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 Grasp the chuck by the body, screw it in counterclockwise when viewed from the side of the cams. The main thing is to rip the cartridge off the ground, then it usually easily unscrews.
I was lucky, because 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 cartridge purchased for replacement.
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 photo, the cartridge moved. But it turned out 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 later, that the hole in the head for the star-shaped bit was clogged with dirt, which just needed to be removed. Therefore, unscrewing the chuck, I simultaneously tore off the thread of the fixing screw, it is strange that it did not break off.
If there is a chamfer on the base of the chuck, then you need to clamp in its jaws a hexagonal bar or an M10-12 bolt with a hexagonal head, onto which a key will be draped and hit with a hammer. If you cannot screw the chuck in this way, 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.
Repair of a drill, screwdriver How to replace a drill chuck
Even the most reliable branded power tool, such as an electric drill, hammer drill or screwdriver, does not speak of a Chinese-made tool, over time, depending on the intensity of use, it wears out and starts to hold drills, bits poorly, or the chuck is jammed.
Such participation befell the patron of my Electric Drill, who has been serving faithfully for more than 12 years. A malfunction of the beginning with jamming will manifest itself, 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, but how to remove the cartridge from the drill shaft?
How is the drill chuck fixed to the tool
By visual inspection 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.
How to unscrew the chuck fixed with a threaded connection from a drill
As a rule, chucks that are threaded onto the tool shaft are additionally secured with a left-hand threaded screw. Therefore, the removal of the drill chuck must be started by unscrewing this screw. In order to get to the screw, it is necessary to drown the chuck’s jaws as far as possible, as shown in the photo.
The head of the slotted screw for a Phillips screwdriver or an asterisk should appear on the bottom of the cartridge in the center. To prevent the screw from loosening during drilling, it is installed with a left-hand thread. Therefore, it is necessary to unscrew the screw by turning the screwdriver clockwise. There may not be a screw. In this case, immediately proceed to the second step. Unscrewing the chuck.
Which method of clamping the drill chuck for a drill is better
In household drills and screwdrivers, one of the types is usually installed according to the method of clamping the working tool of the cartridges, this is with a key and quick-clamping. Key jaw chucks have been around for a long time and are well known to any home craftsman. Keyless chucks have recently come into use and quickly become very popular.
In the photo you see the keyless chuck on the left, and on the right. Key with key. There is an opinion that the key chuck grips drills better, but from many years of experience in operating both the key chuck and the key chuck, I dare to say that there is no difference. Both types of cartridges are clamped with equal success. Only the convenience and speed of changing drills in a drill with a keyless chuck is undeniable. You do not need a key, which is always lost during work, if it is NOT fixed on a drill or tied to it on a rope, you need to use two hands to clamp the drill.
The way the chuck is clamped is NOT related to the way it is attached to the drill shaft, so if you change the chuck with a key clamping method, I advise you to replace it with a chuck with a quick-clamping method for fixing the drills.
Marking of drill chucks with Morse taper
In accordance with GOST 9953-82 “shortened tool cones. 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 photo by the markings on it. Obviously, this cartridge is fastened with 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, the numbers 1-6 are also applied. They indicate the range of drill shank diameters that the chuck can clamp.