How to open the drill chuck without the key


Most portable drills have chucks screwed onto a threaded spindle that is connected to the drill and then held in place with a locking screw. To understand what element you need to buy to replace the old one, you need to open the blades to the widest point and look into the base with a flashlight If you see a screw at the bottom of the chuck, you should pay attention to the type of head. If it’s missing, it’s probably a tapered spindle

When buying, it is also worth considering that the element must provide the proper rigidity of attachment to the number of revolutions. expensive models allow a reduction of radial run-out.

Not on the last place and ease of use of the chuck, in this case the quick-clamp in the first position, but when it comes to durability, it is better to buy with a key.

If carbide drills are used, the drill chuck must be self-centering, because this type of equipment has poor resistance to longitudinal bending

It is important to know that the rigidity of the attachment is always matched to the length of the nozzle and the material of which it is made

What is the function of a chuck in a drill

The drill chuck is one of the central units of the electric drill mechanism. It serves to transmit the rotary motion from the electric motor to the working tool. It is also the task of the drill bit holder to fix the drill bit so that maximum accuracy of drilling is maintained during work, a secure fit is achieved and the tool can be changed quickly.

In any drill, the tool is fixed in a chuck

Chuck mounting on the spindle of an electric drill

Actually, there are two ways of fastening:

The type of fixing can be identified by the marking:

  • labelling B10, B12, B18, etc. п. The Morse taper, the special shape of the mating surfaces (there are 9 sizes from B7 to B45); this designation is preceded by the range of drill shank diameters, e.g. 1-6 B10;
  • type designation 1-15 M13×1,3, characterizing metric thread parameters (drill shank diameter, thread diameter and thread pitch)
  • abbreviation UNF (the full marking is similar in structure to the metric thread marking, for example, 2-13 mm ½. UNF, where ½ denotes the diameter of the thread in inches and the number 20 characterizes the number of threads per length of one inch), which denotes fastening with an inch thread; this type of connection is typical for imported tools.

How to open the drill chuck?

The purpose of a drill chuck is to hold a drill bit or other attachments (construction mixer, grinder, etc.) securely in place. д.). Locking is achieved by three mechanical “fingers” that are brought together and apart by a threaded mechanism.

There are two basic varieties of chuck:

  • The keyless type. To open such a design, it is enough to embrace the body with your fingers and, engaging the reverse rotation, briefly press the trigger of the tool. The drill turns the shaft by itself, spreading the “fingers” that fix the drill bit. Such chuck is easier to work with, but its fixation reliability will be somewhat lower.
  • A version that is equipped with a wrench. The key is a T-shaped device, one end of which has a tapered gear at one end. The other two ends serve as handles for turning. To unscrew or tighten the chuck, the wrench is inserted into the hole on the housing and rotated while holding the housing with the other hand.

A wrench is generally supplied with the power tool. It either lies in the box or is attached to the power cord with a special fastener.

Why you need it

In every drill, there is a very important detail that allows the bits to be firmly locked in place for the respective work. The principle of operation of the chuck is based on a cam mechanism, that is, the fixation of the working tools is carried out by fixation between three/four cams. Jaws are tapered and only move in one direction longitudinally.

The drill chuck does not need to be disassembled or dismantled alone if a drill bit or bit jams in a given unit. Often craftsmen want to expand the functionality of their drill, which is also a reason to disassemble the product. Chucks are divided into two basic types: key and quick-clamp. Quick-clamp devices are not repairable, so if they malfunction, they need to be replaced. Key or cams are repairable, depending on the type of failure.

Repair of the key chuck may be necessary if the drill is not securely fastened. To get a good grip, you need to take the chuck apart and clean the cams from any debris. If the cams show no signs of damage, they should be lubricated with a lubricant, and then installed back on the drill.

How to Remove and Replace a Threaded Chuck

How to replace a chuck on a drill, not all owners of such tools know. But sooner or later there comes a time when the product fails, resulting in the need to unscrew the device for its replacement or repair. Find out how to do it below.

Threaded chuck has a simple design of fixing device. To remove it, you will need to use a Phillips head screwdriver, and sometimes a flathead screwdriver. To clarify which screwdriver is needed, the cams of the product should be hidden inside. Inside you will see the head of the fixing element, which should be unscrewed in a clockwise direction.

Once the fixing screw has been unscrewed, you can proceed to the dismantling of the device itself. To remove it you need to unscrew the product in an anticlockwise direction. If you can not unscrew the product by hand, you can fix the tool in a vise, and then use a plumber’s wrench. This is a simple way to remove threaded chucks from drills or screwdrivers.

Threaded chuck. implies the presence of metric or inch threads on the drill. When buying a new cartridge, it is important to know information such as thread diameter, as well as pitch. This information is usually marked on the body of the chuck. Replace in reverse order of removal.

Removing and replacing the tapered chuck

Now let’s look at how to remove a taper chuck from a drill. Such products are also called Morse cone, in the Honor of the founder. Usually dismantling these versions does not cause difficulties, but to remove it you will need to use a special tool. You can use it to remove the tapered chuck from the drill quickly and easily.

If even such a device is not available, you can do without it. The disassembly process consists of the following steps:

  • Holding the tool securely in an upright position with the drill pointing downwards.
  • Using a hammer, you need to apply light blows all over the surface of the device to make it disengage.
  • Knock out until the device is completely out of the cone.

After removing it, it is replaced with a new one. This is done by hammering the tool into place with a mallet and mallet. Replacement is most often carried out if one of the cams or springs is damaged.

How to get the drill out of a damaged chuck

Very often we encounter a situation where a drill bit becomes permanently jammed in a drill chuck. The only question is how to get it out? To avoid having to dismantle the device, remove the jammed drill bit in this way:

  • Clamp the drill bit horizontally in a vice to prevent it from breaking.
  • Fix the body of the drill at a standstill.
  • Take a hammer, then tap the surface of the chuck with light strokes.
  • If the problem is not solved, the blows are applied more sharply, but not strong, so as not to damage the product.
  • Apply the blows directly tangentially to the sleeve and continue until the bit shank is moved out of the cams.

Remove the jammed drill bit or nozzle from the old Soviet drill by using two plumber’s wrenches. Use one wrench to fix the drill shaft securely and use the other wrench to turn the chuck. If the movement does not take place, it is necessary to hit the wrench hard with a hammer.

Drill cartridges: varieties

If the minidrill or electric screwdriver model is equipped with a special type of locking device, it is necessary to apply a clamping single-finger element. On the tool without a locking device are used two-coupling element or mini chuck. As a rule, the body of such a device is made of plastic, and for the manufacture of the mechanism and cams steel alloy is used.

Any option of independent performance of repair work requires knowledge of the device and the basic components:

How to Disassemble a Drill Chuck

How to disassemble the chuck of the drill? One asks this question sooner or later.

There are 2 main methods of disassembly chuck. key (as the most used in household and professional appliances).

The method is peoratory:

  • Unfolding the collets until they go into the chuck.
  • Install the insert in the chuck.
  • Bearing of the drill by the insertion of a shock-absorber.
  • Turn on the power tool for a couple of seconds. this will remove the “sleeve” (adjustment sleeve).
  • The collets are removed. with the obligatory marking of their mutual spatial positioning. The tricky part is that when you reassemble it, the collets must each take their place. If they are not, it is not possible to center the replacement tool.

The need for the torque wrench is that it is designed to withstand a higher force than a drill.

Disassembly method with a hammer:

  • Chuck setting.
  • Place the chuck on the vise so that the body passes between the jaws, but the sleeve does not.
  • Warm up the socket with a local source of heat. a construction dryer is ideal.
  • Place a plate on the socket as a shock absorber.
  • Break the housing out of the adjustment sleeve with a hammer through the plate.

Drill chucks can be designed as quick-action chucks. The order of their disassembly is as follows:

  • the clutch is undermined and pushed apart on the perimeter with a screwdriver.
  • When there is sufficient clearance between the plate and the housing, the clutch can be removed using only your fingers.
  • Expand the jaws to the limit.
  • Insert a rod or bolt into the chuck, with calm hammer blows the body is knocked out of the bottom of the socket.
  • Once these parts become separated from each other, disassembly as a lubrication process ceases. Further action will result in loss of structural integrity (assembly at this level is done in a production environment).

Ways of fastening cartridges

In handheld drills, two varieties of mounting the drill chuck are used:

  • Morse cone. tapered shank of the shaft and the corresponding hole in the chuck.
  • Screw-fastening. thread on the shaft, to which the chuck is screwed on like a nut.

Examine carefully the metal rod between the body and the chuck. In the case of the threaded fitting you can usually see the slits for the open-end wrench and the tapered shaft is always smooth.

The marking on the chuck also indicates the method of attachment:

  • Morse taper is marked with the abbreviation B10, B12, etc. д. (B. taper, number. maximum drill bit size).
  • In the marking of the threaded chuck there is a designation of the type and diameter of thread: M13 (metric 13 mm) or UNF-1/2 (inch half-inch).

What to do if there is no wrench

A Phillips screwdriver, a drill bit, or any object of suitable diameter is usually used for this. Each chuck has an undercut in which it can be inserted and thus one part can be rotated. After this operation, try to rotate the cartridge by hand. Usually, everything is quite easy to unscrew. However, if the drill has been used for a long time on the same drill, there may not be enough force. Then a gas wrench or a vise can be helpful. Using these objects, it may be possible to create the necessary load to unscrew the cartridge.

Open the chuck with a screwdriver.

Drill chuck: How to change, remove, unscrew

An electric drill is an indispensable tool attribute of both the home handyman and the professional. Without this tool, it is difficult to perform any work related to the production of anything, as well as assembly, disassembly and so on.

Even a big-name brand drill breaks down at some point, after all. One of the most common causes of failure of this power tool is chuck failure, either key-type or self-clamping.

Causes of drill chuck replacement

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

In modern drills, such as Makita, Interskol, Bosch and so on, the attachment of a drill and other cutting tools, as well as all kinds of attachments is carried out by a cam-type device.

The cam mechanism is a 3 or 4 cams, through them and holds the tool in the drill chuck.

If the device is a quick-clamping one, then the mechanism is tightened by hand, and if the keyed one. with a special wrench.

There are also collet devices, but they are more applicable in production for metalworking. They clamp all kinds of tools needed for work.

  • Run-out during rotation. This indicates worn cams or front shaft bearings.
  • Turning on the shaft. The cause is damage to the thread if the chuck is threaded, or wear on the tool cone.
open, drill, chuck

Run-out is a harmful and unsafe phenomenon, it can be characterized as follows:

  • The cutting tool in the drill is not holding up well, or some kind of tooling.
  • Drill bits jamming (if the taper is worn).
  • Holes with irregular shapes.
  • Drill bit shanks are worn out.

How to remove the chuck from an electric drill

The chuck can be fastened to the spindle in the following way:

  • Tapered mount. When a Morse taper (tool taper) is used. In this case the shaft is in the shape of a cone, well ground and requires minimal force to fit it. Example of marking: B10, where B is taper and 10 is the diameter of the shank of the cutting tool. This is the fastening most frequently found in screwdrivers.
  • Threaded mount. There are metric and inch threads. If the chuck is marked M13, it is a metric 13 mm thread. If it’s an inch. UNF with a ½ inch diameter indication.

However, in order to keep the user 100% safe, the manufacturer of imported drills also fix the chuck with a screw, which serves as a stopper and securely attaches it to the shaft.

The screw has a left-hand thread, and very often, when the drill is repaired by inexperienced people, the slot on the screwdriver screw is torn off by ignorance, believing that it is a standard right-hand thread. so unscrew it clockwise.

open, drill, chuck

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

In order to change this element you need to prepare the following tools:

  • Pipe wrench
  • A medium sized hammer. Approximately 400-500 g.
  • Wrenches.
  • Caliper. 2 or 3.
  • A screwdriver with the proper blade shape and cross section.
  • A personal or velvet file.
  • Sandpaper.

This list shows the minimum tool kit. It is very possible that something extra will be needed during the work.

The connection is threaded

Dismantling procedure:

  • Unscrew the setscrew counterclockwise.
  • Unscrew the chuck in the same direction. If there are grooves on the shaft, use a wrench for fixation.
  • If the drill is jammed, tap the jaws from top to bottom using a precise and light hammer blow.
  • To install the device use the reverse order.

Having fixed the part of the jig where the cams are located with a pipe wrench (gas wrench). turn the shaft. The chuck should unscrew easily after such “insistent” intervention.

Joining with a tool tip: Disassembling step by step

This dismantling is carried out with the help of a hammer and a mallet made of non-ferrous metal: brass, bronze, aluminum, copper. But hammers of this type can still be found.

Soft metal will not cause damage to the tool in the form of dents and deformations.

It is necessary to carry out the following actions:

  • Hold the drill with the handle upwards.
  • Delicately tap the backside of the chuck with a hammer all around its circumference.
  • After the device is dismantled, you need to grind the cone with a fine sandpaper. Remove large dents, if any, using a file.
  • A new chuck is inserted into its regular place and fixed by hitting it with a wooden hammer (mallet).

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

Locksmiths usually did the following:

This method is not the safest one, taking into account that the key can fly away along an unplanned path and injure the locksmith. There is also a kind of drills, where the body is made a slot in which a wedge is inserted for knocking out the chuck. These drills can have two cones: one in the chuck and one in the drill. These tools are distinguished by their impressive size and weight.

Cone drills are considered more accurate in responsible drilling because the Morse taper is made with a high degree of precision.

A tapered chuck can also be removed with a puller, because every such drill, which does not even have a tapped hole for the retaining screw, has a through hole.

And if you use a puller with a central stud and put it into this hole, then by securing its mating part with something that has hooks in the form of powerful hooks you can also remove the firmly attached cartridge.

Pullers are used to remove, for example, bearings.

Replacement for the Interskol drill

The Interskol drill is very comfortable, has an ergonomic handle. its low price is also a frequent reason why customers choose it.

How to remove the drill bit from a damaged chuck

Very often I have to deal with such a situation, when the drill gets jammed tightly in the chuck of the drill. The only question is how to get it out? In order not to carry out the disassembly of the device, to take out the jammed drill bit should be done in this way:

  • The drill should be clamped horizontally in a vice to prevent breakage.
  • Hold the drill body stationary.
  • Take the hammer and tap the chuck with light strokes.
  • If the problem is not solved, the blows should be sharper, but not harder, so as not to damage the product.
  • The blows should be applied directly tangentially to the sleeve, and continue until the shank of the nozzle extends out of the cams.

To remove a jammed drill bit or nozzle from an old Soviet drill, use two plumber’s wrenches. Use one wrench to fix the shaft of the drill firmly in place, and use the other to twist the chuck. If the movement is not carried out, it is necessary to apply a strong blow with a hammer on the wrench.

Good to know! To avoid the bits jamming in the drill jaws, regularly lubricate the jaws with normal motor oil.

How to get the drill out of a damaged chuck

Very often you encounter such a situation, when the drill bit jams tightly in the drill chuck. The only question is how to get it out? To avoid having to dismantle the unit, the jammed drill bit should be removed in this way:

  • The drill bit should be clamped horizontally in a vise to prevent it from breaking.
  • Fix the core drill chuck at standstill.
  • Take a hammer, and then tap the surface of the chuck with light blows.
  • If the problem persists, tap more sharply, but not harder, so as not to damage the workpiece.
  • The blows should be applied directly tangentially to the sleeve, and continue until the extension of the shank of the nozzle from the cams occurs.

Remove the jammed drill bit or nozzle from the old Soviet drill using two plumber’s wrenches. Use one wrench to fix the shaft of the drill firmly in place, and use a second wrench to turn the chuck. If the movement does not work, it is necessary to hit the wrench with a hammer.

Important to know! To avoid the jamming of the bits in the drill jaws, the jaws should be regularly lubricated with normal engine oil.

open, drill, chuck

How to disassemble the chuck on the drill

Disassembly is necessary in order to extend the life of the product. Cleaning and lubricating parts during disassembly. Disassembly can be carried out as follows:

  • Use a drill with a special adapter, on which the cam chuck with threaded connection is put.
  • The cams must be hidden inside.
  • A sheet of Styrofoam or styrofoam is attached to the end of the device. After that, the back side of the foam should be against the wall.
  • Starts the accelerator in the shock mode. The cartridge will be disassembled in 2-3 seconds.

The video describes the disassembly process in more detail. The video also shows the process of its reassembly. 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 allocate time to carry out diagnostic procedures.

How to remove the drill bit if the chuck is in good condition

If everything is in order, then there should not be any problems with getting it out. That’s why this section is more likely to be devoted to users who know nothing about power tools, because the operation itself is elementary. But still a lot of people, so maybe someone will need this information.

In this situation, a special wrench is needed to loosen the keyhole chuck, or a straight hand to loosen its quick-action counterpart.

In the first case you insert the spanner into one of the recesses of the chuck and start turning it counter-clockwise. The spinning occurs due to the available teeth on both objects.

In the second, the drill should be in reverse (reverse rotation) mode. Hold the outer chuck shell with one hand and press the start button with the other. If your machine is not equipped with reverse, it is not very good. it should not be, because such machines are only equipped with key chucks. But still, if this happens, it is necessary to somehow fix the axis of the drill (for example, with a wrench) and rotate the outer body of the chuck counterclockwise. In general, it would be better to remove such a chuck and put a key chuck here.

Varieties of

Types of chucks Drill bits are subdivided into the types used by:

Drill bit types

  • Spiral. They are universal and are used for drilling a wide variety of materials.
  • Shaped. If you need to adjust the depth, then this drill is used, which can make the hole larger.
  • Drill chucks. These drills are used to make holes in wood products.
  • Stepped. They are used for drilling in onduline, iron and metal tiles.
  • Milling drills.
  • Shaped and so on.

Drills also differ in their tips. They are specially made for percussion and regular drills, and resemble a cylinder in shape.

As for the chucks themselves, there are also differences. For example, some are used for an impact drill, while others are used for a regular drill or a rotary drill. In each case, you can fasten the drill bit differently.

Jaw chuck for drills

Chucks in turn can also be of two kinds:

A keyhole chuck requires a special wrench to set the drill. The chuck is locked with a wrench that is inserted in its bore and turned clockwise. Thus, the drill is securely clamped. As for the quick-change chuck, it is divided into two types: single sleeve and double sleeve.

The chuck replacement technique is presented in the video:

Double-clutch chuck has two sleeves, one of them clamped, the other hand turns the other sleeve. If we talk about single-fit chucks, the chuck is clamped with one hand. Drill bits can be changed much faster in this chuck than in the key chuck. But as for the fixation of the drill bit, it is much weaker with this variant.

Chuck design

So, how to insert a drill bit into a peorator or drill correctly?

Chuck replacement and disassembly on the drill

In the question of how to replace a worn chuck on the drill, there is nothing complicated. To do this, it is enough to purchase an appropriate clamping device, remove the old one from the drill and install the new one on it. It should be borne in mind that there are two types of chucks available for both conventional and minidrills:

Chucks that use threads to mount to a drill are removed and locked in the above pattern. When replacing such a device, it is not enough to know that it is a threaded device, it is also important to take into account the markings that are necessarily applied to it. Such clamping cartridges can be marked as follows:

The 1.5-13 interval present in these designations indicates the minimum and maximum diameters of the cutting tool to be installed. The rules for replacing a chuck on a drill suggest that the new chuck must have a marking that is completely identical to the designation of the old one.

With the question of how to replace the tapered chuck on the drill, everything is somewhat easier. This type of device can also have different markings, namely:

To replace a chuck of this type on a drill, you simply need to pick up a clamping device with the appropriate marking and insert its seating part into the cone hole of the drilling equipment. Orientation in such marking is simple enough: the letter “B” means that it is a chuck of the cone type, and the number indicates the diameter of the lower part of the landing hole.

Removing the taper chuck from the drill is as easy as installing it. In order to perform such a procedure, you simply need to knock the chuck from the landing hole of the drill, for which you use an ordinary hammer. With details of installation and removal of a cone chuck of an electric drill can also be found by watching the appropriate video.

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

How to Disassemble an Electric Screwdriver or Drill Chuck? It is necessary to perform such a procedure from time to time for maintenance of the unit (cleaning and lubrication of all its internal elements), as well as for its minor repairs. This will extend the life of the chuck considerably.

When disassembling the chuck, you should take into account what type it belongs to. Guided by the instructions or video, it is necessary to perform all actions for disassembly of such a device as carefully as possible in order not to damage its constituent elements. After all maintenance or repair procedures for the components of the drill chuck have been completed, you should reassemble it in reverse order.

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

Drilling in different materials

To drill quickly and accurately the metal surface

, it is necessary to choose correctly the drill bit. the sharpening of the cutting edge differs significantly, as well as the grade of steel from which the cutting tool is made. When working, you have to set the RPM to low and the pressure should be strong, but so that the drill does not break. The place of intended drilling is marked with a locksmith’s core. It is necessary to make a small depression, so that the drill bit is firmly hooked on the metal and does not “walk” on its surface.

When you drill concrete or brick, you must turn on the impact mode and be sure to use a respirator, t. к. there will be a lot of dust.

In order to drill through the tiles

open, drill, chuck

, Some craftsmen use a thin wooden plank. On the tile mark the place of the hole, then we put a wooden pad and carefully drill so as not to crack the delicate surface.This method can be used to drill tiles in the bathroom or kitchen, on the drill set to maximum speed.

When it is necessary to make large holes in wood

, they use drill bits with a larger diameter or special attachments. Some specialists use a powerful, but with low revolutions (no more than 600 rpm) drill for screwingscrew piles in the homestead. Installation is carried out by gradually pressing into the ground with the simultaneous screwing of the preassembled pile structure, while using special wrench heads of various diameters.

Repair work most often requires the use of a tool such as a peorator. For drilling holes and removing surfaces. Any power tool is subject to stress during work, and this gradually leads to malfunctions. Often after a completed process of work is a problem with the removal of the drill from the chuck of the tool. To pull out a jammed drill bit, you need a bit of work.