It is difficult to imagine a house where there is no electric drill. This is a favorite tool for almost every man.
Usually the user does not worry about the drill, the tool works for himself, and let it work. But then a strong beating of the drill appeared or the clamping mechanism jammed, repair loomed on the horizon. There was a need to remove or even disassemble the cartridge. Here, some inexperienced masters will need advice on how to perform the necessary work without ruining the drill completely and irrevocably. To begin with, it is worth familiarizing yourself with the information on the types of cartridges and the methods of their attachment to drills.
The main types of cartridges for household drills the following:
- quick-clamping or BZP, convenient in operation, allowing you to easily and quickly change the tool, but the strength and durability are not too high; nevertheless, drills with quick-clamping chucks (with one or two couplings) are deservedly popular;
- gear-crown, requiring the use of a special key.
There are also other varieties, for example, SDS and SDS-max from Bosch. But you should not dwell on this issue in detail, since the type of the chuck by the method of clamping the drill does not affect the way the chuck is mounted on the drill spindle.
Attaching a Chuck to an Electric Drill Spindle
Actually There are two mounting methods:
- cone pairing;
- threaded connection.
You can find out the type of fastening by marking:
- the inscriptions B10, B12, B18, etc. characterize the parameters of the Morse cone, the special shape of the mating surfaces (a total of 9 sizes from B7 to B45 are provided); before this designation mark the diameter range of drill shanks, for example, 1−6 V10;
- type designations 1-15 M13 × 1.3; characterizing the metric thread parameters (diameter of drill shanks, thread diameter and its pitch);
- UNF abbreviations (full marking is similar in structure to the marking of metric threads, for example, 2–13 mm ½. UNF, where ½ indicates the diameter of the thread in inches, and the number 20 indicates the number of threads per one inch), which means fastening with an inch thread ; this type of connection is typical for imported instruments.
Technology for removing a cartridge from an electric drill
To perform this operation The following tools may be required:
- wrenches (wrenches, plumbing, open-end wrenches):
- Phillips screwdriver;
- a hammer (preferably a mallet made of rubber or wooden);
Previously, the tool is removed from the cartridge. The key chuck can also be unlocked without a key by inserting a drill shank into the hole.
Cone mating dismantling
This pairing option should not cause disassembly difficulties.
If a fixing screw is present, it should be loosened.
It is recommended to orient the tool with a drill down and take off the cartridge with light tapping hammer (to protect mechanisms from damage, the best option is to strike with a rubber or wooden mallet on the cartridge case through the gasket. open-end wrench).
If there is a device for removing bearings, it is better to use it.
Dismantling with threaded interface
In this case disassembly procedure is as follows:
- The cams are sunk as far down as the head of the internal screw is located on the bottom of their socket, which must be reached with a screwdriver. However, the presence of a screw is optional.
- The screw is unscrewed from the spindle with a screwdriver, the fixing screw has a left-hand thread, that is, it is unscrewed by turning the screwdriver clockwise. If there is difficulty in turning the screw, you can lightly tap it with a hammer through a screwdriver.
- The cartridge from the shaft is unscrewed like a regular nut with a right-hand thread, that is, by turning counterclockwise. If the process is difficult, the use of two keys is recommended. The spindle is fixed with a spanner, the chuck is unscrewed with a gas spanner. You can insert a thicker hexagon into the cams and unscrew the cartridge with it.
If, however, the operation fails, you will have to disassemble the electric drill body to provide access to the spindle.
And one more tip: if the screw turns out to be damaged during disassembly, then you can purchase a punch adapter, it will contain a suitable screw.
Features of the work on the removal of the cartridge of drills of different companies (in particular, interskol) can be studied when watching a video.
The recommendations given are also valid for rotary hammers and screwdrivers.
And a few more tips:
- Before any repair work on the drill, disconnect the power cable from the network.
- If the case is complicated enough or there are doubts about your qualification as a household appliance repairman, it is better to turn to professionals for help. Otherwise, there is a risk of completing the repair with the purchase of a new drill.
Quite often, when operating drills, wear occurs on various structural parts. One of these parts is the cartridge, during the wear of which there are a number of various problems. Cartridge wear often manifests itself in the form of unreliable fixation of interchangeable nozzles for a drill. To eliminate such a malfunction, it will be necessary to dismantle the product, as well as to carry out its replacement or repair. How you can remove the cartridge from the drill, it is advisable to consider in more detail.
Why is it necessary
Each drill in the construction has a very important part, which allows you to reliably fix the nozzle for carrying out the corresponding work. The principle of operation of the cartridge is based on the cam mechanism, that is, the fixation of the working nozzles is carried out by fixing between three / four cams. The cams are conical in shape and move only in one longitudinal direction.
Dismantling and disassembling the drill chuck is required not only when jamming of the drill or bit occurs in this device. Often, craftsmen seek to expand the functionality of their drill, which is also a reason for dismantling the product. Cartridges are divided into two main types: key and keyless. Keyless devices cannot be repaired, therefore, if they fail, replacement is required. Key or cam devices are subject to repair depending on the type of breakdown.
Key chuck repair may be required if the drill is not securely attached. To ensure reliable fixation, it will be necessary to disassemble the cartridge and clean the cams of dirt. If the cams do not show signs of damage, they should be lubricated with lubricant, and then installed back on the drill.
How to remove and replace a threaded cartridge
Not all owners of such tools know how to replace a cartridge with drills. But sooner or later the time comes when the product fails, as a result of which it is required to untwist the device for its replacement or repair. How to do this, we learn further.
The threaded chuck has a simple locking design. To dismantle it, you will need to use a Phillips screwdriver, and sometimes a flat one. To clarify which screwdriver is required, the cams of the product should be hidden inside. Inside, the head of the locking element will be visible, which should be twisted clockwise.
Video: Why the Drill Cartridge Cone Turns
After the fixing screw is unscrewed, you can proceed to dismantle the device itself. To remove it, you need to unwind the product in a counterclockwise direction. If you cannot manually unscrew the product, then you can fix the tool in a vise, and then use the plumbing wrench. In such a simple way, threaded chucks are removed from drills or screwdrivers.
Threaded fastening. implies the presence of a metric or inch thread on the drill. When buying a new cartridge, it is important to know information such as the diameter of the thread, as well as the pitch. Such information is usually indicated on the cartridge housing. Product replacement is carried out in the reverse order of removal.
Removing and replacing cone cartridge
Now we will consider how to remove the cone type cartridge from the drill. Such products are also called Morse cone, in honor of the founder. Usually, dismantling such options does not cause difficulties, but for removal you will need to use a special device. With it, you can easily and simply remove the conical chuck from the drill.
Even if there is no such device, then you can do without it. The dismantling process consists of the following actions:
- The tool is held securely in an upright position with the drill pointing down.
- Using a hammer, it is necessary to strike lightly over the entire surface of the device in order to disengage.
- Knocking out is carried out until the device is completely removed from the cone.
After extraction, it is replaced with a new one. This is done by stuffing the product with a mallet and a hammer in place. Replacement is most often carried out in the event of damage to one of the cams or springs.
How to get a drill from a damaged cartridge
Very often you have to deal with such a situation when the drill tightly wedges in the drill chuck. There is only one question, how to get it? In order not to disassemble the device, remove the jammed drill in this way:
- The drill should be clamped in a vice in a horizontal position, which will prevent its breakage.
- Lock the drill body in a stationary state.
- Take the hammer, and then tap on the surface of the cartridge with light strokes.
- If the problem is not solved, then the blows are applied more sharply, but not strong, so as not to damage the product.
- Impacts must be applied directly along the tangent to the sleeve, and continue until the extension of the nozzle shank out of the cams.
To remove a jammed drill or nozzle from an old Soviet drill should be using two plumbing keys. Using one key, the drill shaft must be fixed securely, and using the second one, scroll the chuck. If the movement is not carried out, then you need to apply a strong blow with a hammer on the key.
It’s important to know! To avoid jamming of nozzles in drill clamps, lubricate the cams regularly with regular engine oil.
How to disassemble a drill chuck
Dismantling the device is necessary in order to extend the life of the product. During disassembly, the parts are cleaned and lubricated. Disassembly can be done as follows:
- We use a hammer drill with a special adapter, on which a cam chuck with a threaded connection is put on.
- Cams should be hidden inside.
- A foam sheet or expanded polystyrene is applied from the end of the device. After that, the reverse side of the foam should rest against the wall.
- The punch is launched in shock mode. Within 2-3 seconds, the cartridge will be disassembled.
The video describes the disassembly process in more detail. The video also shows the reverse assembly process. There are many other disassembly options, but the simplest and most acceptable is the one described above.
In conclusion, it should be emphasized that if you want to extend the life of your tools, be sure to take the time to conduct diagnostic procedures.
When the drill is working properly, the user does not have questions, but there are cases that require disassembling, many enter into a stupor, solving the problem: how to remove the cartridge from the drill. To correctly perform such an operation, you need to know how the cartridge is mounted on the shaft, and then already begin dismantling.
The following types of cartridges:
- keyless action or self-clamping device;
- sds devices of a collet type;
On a drill with keyless chuck you can change the drill or other nozzle quite quickly, without the need to use any additional devices. The cartridges of the first option are divided into single and double coupling devices.
One-piece devices have a shaft locking system that is triggered during tool change. They have a significant negative point. the very low strength of the fixing elements, the outer parts of the cartridge are made of plastic, which greatly increases their damage and breakdown of the entire device.
Cartridge repair of this kind is not provided. only a replacement.
Manufacturers put on percussion models and perforators cam products, because their design is more robust. mainly turnkey cartridges are used here, for reliable fastening of the drill.
Collet type The cartridge was created back in the 70s of the last century, its design is different in that there are two grooves in the rear part, and the drill must be deepened by 40 mm with screwdriving movements. There are 4 grooves: 2 fixing, 2. for guiding the wedges, the cutting tool is fixed with locking balls.
In a classic gear device, the tightening is adjusted using key for cartridge, which comes with the drill kit. To properly unscrew the cartridge, you must adhere to the recommendations of an experienced master, for this, watch this video:
The chuck on the shaft of an electric or manual drill is fastened in two ways. a conical connection and a thread, so there are a minimum of varieties. In practice, there are devices with metric or inch threads, and markings are always present on the body of the product, even the smallest one.
For example, a designation of this kind 1.5-15M13x1.2 is deciphered as follows:
- 1.5-15 is the diameter of the tail of the cutting tool in millimeters;
- M13. metric thread with a diameter of 13 mm;
- 1,2. thread pitch.
Using thread in inches. UNF and diameter: 1/2 ”is indicated. This type of connection is considered international and is used in all instruments of foreign manufacturers. For special reliability, a stop is placed on the shaft, in the form of a screw on the left-hand thread. this must be taken into account when confusing how to disassemble the cartridge of an imported drill. Unscrew it only clockwise.
The second method uses morse cone, which today is more often called an instrumental cone. The shaft has a tapered part at the end, on which the device is mounted, with a little effort to make a tight connection. The marking is: B10, where the letter indicates the use of the cone, and the number indicates the diameter of the tail of the cutting tool. This type of fastening is common with screwdrivers.
Some drills are equipped with an adapter (adapter) for the clamping mechanism, which allows drilling with maximum accuracy.
In modern models of drills, such as Interskol or Makita, the fixing of a drill or other nozzles is carried out by a chuck with cam mechanism: 3 or 4 cams securely hold the cutting tool, they can only move along the axis of the drill shaft. The keyless chuck is manually adjustable, more complex designs used in modern drills. with a key.
During operation, a beating of the clamped bit may appear, the cause is the wear of the cams during prolonged use. The tool repair is carried out as follows: it is necessary to remove the device from the shaft, the same actions are necessary when jamming the drill, because it can only be removed after the cartridge part is completely disassembled.
There is also such a malfunction: cartridge rotates relative to the tool shaft. The reason for this behavior is damage to the threaded part of the device mount, or the landing cone has a subsidence. The way out of this situation is to change the cartridge to a working analogue.
Tool for work
Replacing the drill chuck is easy if you know the design of this unit and the methods for attaching it. To carry out repairs you will need a simple set of tools:
- bench vise, you can use not standard, but a smaller version for household needs;
- steel hammer;
- joiner’s mallet;
- pliers or pliers;
- medium sized pipe wrench;
- set of wrenches;
- sanding paper for grinding.
The list indicates the minimum set, there are situations where other locksmith tools may be required.
Dismantle the cartridge
Depending on the method of attaching the cartridge mechanism, disassembly methods will vary.
It is necessary to disassemble such a design in this order.
- Gently loosen the locking screw.
- We unscrew the cartridge counterclockwise, if the thread is tightened to the conscience, we clamp the tool shaft in a vice. To unscrew, use a gas key. Then we remove the device and examine it for integrity and serviceability.
- If the drill bit is jammed in the lips, then we apply not strong, but accurate hammer blows using a punch on the cams from above.
Installation is carried out in reverse order. When tightening a new device, the shaft must lock from turning free hand. Last we twist the locking device. To help home craftsmen video:
It is quite easy to remove the cartridge from the conical part of the shaft. The drill kit should have a special device for this purpose, but many experienced craftsmen use this method: they turn the tool upside down with a drill, fix it and evenly hit the back of the device with a hammer and knock it off the shaft.
After dismantling it is necessary sand conical surfaces with an emery cloth, if there are scuffs on the surface, then remove them with a file. The new cartridge is installed in place even easier. with the blows of a mallet on top, it sits tightly at the junction.
Users need to remember that removing a drill or other attachment when stuck in a chuck requires certain skills and the ability to handle locksmith tools, but in any case, you must dismantle the device. If the drill cartridge is out of order, then it must be replaced.