How to grease and assemble a Bosch 2-26 rotary hammer

The principle of operation of the Bosch 2-26 is no different from that of other well-known brands. The rotating rotor transmits the torque to the intermediate shaft of the mechanic unit, simultaneously transferring the translational motion via a roller bearing to the impact mechanism of the rotor and the impact pulse. Rotational torque is transmitted to the working tool with a progressive shock impulse. This principle applies to all torches.

But different brands that produce rotators have their own design features.

Bosch torches are considered the best in their segment of power tools. But nothing lasts forever.

If your Bosch torches 2-20, 2-24, 2-26 stop working, you can repair them with your own hands. You need basic locksmith skills and a little knowledge of electrical engineering. And another important detail, the design of the Bosch torches is so simple that it does not cause difficulties during repair.

When repairing power tools, including repair of Bosch submersible motors, strictly follow the safety regulations when working with electrical appliances.

To facilitate the repair of the Bosch peorator, its disassembly and reassembly, study the assembly diagram of the tool:

Bosch 2-26 torch diagram

Any disassembly of the Bosch 2-26 Peorator begins after an inspection, a test run, and identification of the cause of the appliance’s malfunction.

Bosch 2-26 chuck disassembly video

What is a peorator

With the widespread use of the peorator, construction and repair work has become much easier. After all, in cases where you need to drill holes in concrete, brick, asphalt, this device is indispensable. Wherever impact drilling is required. It is also used to perform tasks that are typical of a drill, although the peorator chuck is different.

This tool has three standard functions:

Another difference between the peorator and the drill is that it has more power. It starts with 700 watts and goes up to 3 kW.

Chuck design

Almost every construction tool is versatile, and the rotary tool is no exception. There are many different bits, adapters, chucks. The basis for all kinds of work is the chuck. Peorator adapter is used to install a drill bit that is removed from a regular drill. Nozzles and drills have a huge variety and are chosen according to the tasks set.

Always keep a replacement cartridge for your peorator at home, since one can fail at any time. It is also worth noting that for each type of work, it is preferable to use different chucks. The main types of chucks include:

Amateurs often wonder why there are so many different kinds of cartridges. Recall that there are bigger and smaller chucks. If it is a very powerful tool, it is necessary to think about a solid fixation of the drill and the bits. Such chuck as SDS-max is designed for deep seating, which means that possibility of chucking a drill bit during work is minimized. It is the same with less powerful torches, which are designed for “jewel-like” work. The emphasis in this case is not on twisting, but on accuracy.

In order to know how to repair the drill chuck, it is necessary to study its structure. But how the chuck is designed?

At one time, the drill was attached by moving cams, but progress is not standing still. The SDS drill bits are fixed by means of 2 guiding wedges and 2 locking balls. SDS-plus and SDS-max differ only in the number of shims (the latter has 1 more). This way, the attachment is very fast and reliable.

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It is now much easier to “click” the bit by simply inserting it into the socket in the chuck and then slightly pressing it in until it clicks into place. This ensures that the bit is properly clamped. the drill is also easy to remove: press the sliding cover and the bit is extracted.


For professionals, replacing or repairing the torque regulator is no problem. However, what should those who are not engaged in construction and repair at a professional level do? Since any man in his life at least once held a drill in his hands, he must be aware of the process of removing as well as replacing its chuck. In this case, the reasons can be very different, starting with a slow running gear rim and ending with a major breakdown. How to change a chuck on a rotary tool? Let’s consider the replacement in detail.

The first step is to determine which chuck is used directly in your torch. They come in cam chucks, SDS collet chucks and quick-action chucks. The latter, in turn, can be one-and two-cavity. In the cam chuck is fixed with a wrench, which can not be said about the collet SDS and a quick-clamp. In order to replace a drill bit in an SDS collet chuck, you only need to twist it.

Chuck replacement on the peorator begins with the study of fasteners. They can be held in place by a threaded rod or a spindle. in most cases it is no problem to remove the chuck. However, sometimes a much tighter fit is encountered, which requires patience and additional tools. In a simplified version, the firmly fixed chuck is removed by means of a hammer, spanner and screwdriver. The removal process is as follows:

How to remove the chuck from the peorator

To remove most SDS chucks from the peorator, the base behind it is axially withdrawn toward the motor, and the clamping device is easily removed, because it is fastened according to the drill retention principle. (First 12 seconds of video)

Some models, such as those from Makita, use dual clamping devices. To remove them, the base of the chuck, located behind it, should be turned counterclockwise 1/8 turn to the arrow pointing to the icon detached clamping unit. As a consequence, it will come free.

If using a quick-action chuck in the chuck, it is necessary to use a screwdriver. Unscrew the left-hand threaded fixing screw by turning it clockwise using a straight screwdriver.

The chuck itself can be unscrewed by hand anticlockwise after the shaft has been secured by a pin. If it does not come off, a large hexagon socket wrench is inserted and clamped. After that, you should hit it counterclockwise with one strong blow with a wood object so as not to deform the tool.

Alternatively, clamp the hex socket between the jaws and use a suitable wrench to unscrew the chuck.

If the screw does not unscrew, it needs to be tapped to loosen it. a screwdriver is inserted into the slot and lightly tap on it. If there are signs of corrosion near or on the fixing bolt, it should be lubricated with liquid grease.

The SDS-max chuck can be removed like any other accessory: The rear coupling of the SDS accessory is pushed towards the motor in the direction of the axis and the chuck is removed.

About the attachments for peorator tools

Theoretically SDS-max chuck can be equipped with tool shank for SDS-plus chucks and even tools with even smaller diameter of shank. You can use a special bit (adapter) for this purpose available now at almost any construction market. Meanwhile it is categorically not recommended to use such adapters for peorator, because using a tool with smaller diameter on heavy class peorators will quickly lead to its failure.

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As a rule, tools for peorators are sold in packs and cannot be reconditioned after failure. This should not be confused with conventional drills, which differ from it in the shape of sharpening and the structure of the spiral.

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Cartridge device

Almost any construction tool is versatile, and rotary hammers are no exception. There are many different attachments, adapters, chucks for them. The basis for any kind of work is the cartridge. Peorator adapter is used to install the drill bit, which is removed from the regular drill bit. Attachments and drills have a huge variety and are selected according to the task at hand.

Always keep a replacement hammer cartridge at home, as it can be removed at any time. It is also worth noting that it is advisable to use different cartridges for each type of work. The main types of cartridges include:

Fans often wonder why there are so many types of ammunition. We remind you that there are higher-powered and lower-powered rotary drills. If the tool is powerful, you should think about a reliable fixation of the drill and nozzles. A cartridge such as the SDS-max is designed for deep seating, which means that the likelihood that the drill will fly out during operation is minimized. It’s the same with the less powerful peorators, which are designed for “jewelry” work. In this case, the greater emphasis is not on fixing, but on accuracy.

To find out how to repair a planter, you need to study its construction. But how the drill bit holder is designed?

At one time, the drill was fixed with movable cams, but progress continues. The SDS drills have two wedges and two retaining balls. SDS-plus and SDS-max differ only in the number of guide wedges (the latter has 1 more). So the mount is very solid and fast.

Attachment of the nozzle itself has also been simplified: you just need to insert the selected nozzle into the chuck, press lightly and wait for a click. In this way, the nozzle is well secured. It is also not very difficult to remove the drill: press the movable cover. and the drill will be removed.

In addition, an impact drill can include:

How to disassemble the peorator cartridge

When disassembling the cartridge, you need to consider the manufacturer, as disassembling the cartridge will also vary significantly. Today’s list of the most popular include:

Let’s look at disassembly by the example of the chuck to the Bosch percussion drill:

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Plastic part pushed back, rubber gasket removed.

Using a screwdriver, carefully remove the retaining ring.

Behind the washer we will see a second ring. It must be rotated and removed by unscrewing it with a screwdriver.

Behind the plastic part we see the SDS clamp, consisting of a spring, ball and washer. First remove the ball, then the washer and the spring.

The cartridge is dismantled for various purposes: repair, replacement of individual parts, cleaning, lubrication, etc. Д. The cartridge for a Makita and other brands is disassembled in about the same way, except for a few nuances that are taken into account based on the cartridge design.

After disassembling and making everything that was planned to work with the cartridge parts, the logical question arises: how to reassemble a peorator cartridge? Just use the disassembly instructions from the last step to the first step (do the exact opposite).

How to Replace a Cartridge with a Peorator

We already wrote above that not every cartridge will fit every drill. We also explored the process of removing and even disassembling the cartridge. To install a new cartridge, proceed as follows.

A good owner knows: a hammer requires careful maintenance. For the longevity of the tool it is necessary not only to observe the basic requirements for operation, but also to detect breakdowns and replace faulty parts in a timely manner.

If you notice that the tool is not working as it should be repaired to check if it is working properly. But this check can cost a penny, so people often have their tools repaired. To make the repair at home successful, you need to know the internal structure of the chuck and some tricks. In this article, we’ll look at how to disassemble and repair peorators from major manufacturers. Makita, Interskol, Bosch, Progress, Zubr, Hitachi, Energomash and others. We will also focus on the lubrication of the power tool.

Removal of chuck with threaded back screw

In order to remove the chuck from the axis, we need to first unscrew the central screw. In order to access it, you need to extend the cams to the stop. Then turn the screwdriver or a screwdriver inside to “pull off” the screw by using a sharp movement. The threads of the left side screw. The screw has been sealed and is very difficult to turn.

Besides it is necessary to notice that in job it is necessary to use a high-quality tool. When working with a Chinese screwdriver, I just blew a slot. With all this the screw itself has remained in an untouched position. It was only a knock on the screw that helped and then the head bumped back and the process started. After unscrewing the screw it is necessary to remove the cartridge body itself.

Then the chuck itself must be unscrewed from the thread. In this case, the thread is right opposite to the screw. It is very difficult to tear the threads because they “stick” while working. Considerable effort is required, but the process can be accelerated.

In this case a hexagon wrench clamped in the chuck can be used. It will allow to lengthen the lever, and if there is a “reverse” to use the tool. To use the tool, either clamp the hexagon in a vise and turn it on, or tap it on the table while rotating it at low rpm.

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