Rotary hammer drill lubricant how to use

What parts and how to lubricate?

To begin with, it is worthwhile to understand that one lubricant, no matter how versatile it is, cannot indiscriminately process all the details. One type of lubricant is suitable only for the gearbox, the other for drills and drill bits. Each unit, such as the PBH 2100 RE or GBH 2-24 DRE, is supplied with an instruction manual that describes the lubrication frequency of the parts.

rotary, hammer, drill, lubricant

Before starting the lubrication procedure, the power tool must be cleaned and blown out, and then wiped dry.

What and how to process:

  • Reducer. To the question: what is it worth to lubricate the gearbox of a household or professional puncher, the answer is as follows. with a composition in the form of liquid oil. The substance is simply poured in certain quantities into a specially designated place in the shell of the device. Oil fills the gearbox housing, and during operation, all of its parts are covered with a uniform layer of grease. If there is no special hole in the power tool and you need to disassemble it in order to lubricate the gearbox, it is better to contact a specialist.
  • Boer. It must be lubricated before each installation in the chuck. How to lubricate a hammer drill bit? All grooves of the nozzle are processed with a small amount of the agent. The instructions for the devices usually indicate the type and amount of lubricant with which the drill can be processed.
  • Cartridge. The ponytails of the replacement drill bits should also be machined each time before installation. The amount of the drug should be strictly the same as indicated in the instructions, no more and no less. How and with what to lubricate the punch chuck (a special attachment that is used to securely hold the drill), for example, HR2470 or any other? The drilling lubricant simply needs to be applied to the tail of the drill and then inserted into the socket of the chuck. And after removing the nozzle, it must be cleaned of dust and recycled oil.

And how to lubricate the piston of a perforator? Each manufacturer has its own piston lubricant. It is best to use the original.

Elements that do not require sliding during operation (transfer clutch, core, firing pin, cylinder) do not need to be lubricated.

How and what to lubricate a rotary hammer: lubricants for 6 brands

The puncher will come in handy if you need to make a hole in the wall, grind a “track” under the wires and for other construction issues. The tool will faithfully serve its owner, if you do not forget to take care of it.

Elements such as a drill, a reducer, a cartridge require periodic processing with special equipment. How and with what to lubricate various types of rock drills? Here are the answers and nuances of processing electric devices produced by 6 well-known brands.

Design features

Such power tools are barrel and straight, mechanical and pneumatic, and depending on the size. light, medium and heavy.

  • core;
  • Boer;
  • firing pin;
  • piston;
  • cylinder;
  • electromagnetic coil.

There are differences in detail depending on the type of fixture. And that’s not all the details from the list. So how does a perforator, useful in construction, work? The units, in addition to the above parts, are equipped with:

In addition, such instruments have a variety of indicators and speed controls. Having dealt with the nuances of the device of this construction tool, it’s time to move on to the lubrication of its individual elements.

What kind of lubricant is best for which rotary hammers to use?

The best option is to use only branded lubricants. So that the masters do not rack their brains about how to lubricate the hammer drill, the manufacturers of these devices made sure that their assortment included special means for this.

What else can you lubricate the individual elements of the Bosch rotary hammer (Bosch)?

The brand manufactures over 300 types of various tools, including hammer drills. And to all these devices there are thousands of accessories.

To care for the “destructive” weapon, the company produces the following products:

The assortment of the Japanese brand includes:

The Japanese corporation also took care of its customers and provided a wide selection of how to lubricate the Makita rotary hammer.

You can use a multipurpose grease such as 042005-4A. Or use separate lubricants for specific parts of SPARKY gearboxes (042024-0A) or drills (181573-3).

A set with many Energomash models is already supplied with grease for gearboxes and tails. If there is none or the product has run out, use multi-purpose grease 042005-4A.

Basically, all manufacturers of rock drills equip their products with branded lubricants, complete with the delivery of equipment. You can use both universal options and substances for gearboxes or drills. Many craftsmen prefer to use ordinary lithol instead of original means, which is fundamentally wrong, because it is not resistant to moisture. This can lead to the formation of corrosion on the internal components of the device. Therefore, it is worth using branded lubricants, as necessary, clean and process the power tool and then it will 100% serve for more than one year.

How and with what to lubricate the gearbox and the chuck of the perforator?

Welcome to my site! This article will focus on lubricating a rock drill. The operation of this tool requires more than simple care. Be sure to periodically lubricate the gearbox and chuck.

In this case, the gearbox, of course, comes already lubricated from the factory. But over time, the lubricant leaks somewhere, dries somewhere. In addition, it is only intended to reduce friction, not to eliminate it. Therefore, one way or another, and the parts still rub against each other, due to which fine metal dust is gradually formed, which remains in the lubricant.

As a result of this mixing of metal and lubricant, the properties of the latter are gradually lost and wear of parts is accelerated.

Inexpensive Chinese rock drills can be poorly lubricated in the factory. Experienced masters of service centers recommend, after buying even a new such device, to immediately disassemble and grease it

The cartridge is dry from the factory. Here, in fact, not the cartridge itself is completely smeared, but only that place of it that comes into contact with the drill, since it is in it that strong friction occurs, without reducing which you can damage both the cartridge itself and the drill shank.

So, below we will consider how and how to lubricate these elements. An SDS rotary hammer with a horizontal engine will be considered, since it is it that is used by home craftsmen in the overwhelming majority of cases, and the article is mainly written for them.

Lubricate the gearbox

You will need to disassemble the tool body. Follow the points:

  • Disassemble the cartridge. To do this, first remove the rubber ring. Then use a screwdriver to pry and remove the retaining ring. Next, the outer casing of the cartridge is carefully removed, and then the pressure ring, ball and spring are removed.
  • Now unplug the mode switch. This is done differently depending on the model. At the end of the article, I gave a number of links to videos that describe how he is filmed on a particular model. If your unit is not among them, then you can look at any similar one to understand the principle. And then, I think, it will not be difficult for you to disconnect it at your own.
  • Free the collector from the brushes. To do this, unscrew the rear housing cover and remove the brushes.
  • Unscrew the self-tapping screws that pull the body longitudinally and separate it.
  • Take out the gearbox together with the motor armature.

Now thoroughly rinse the gearbox itself, as well as the inside of its housing. Flushing can be carried out, for example, with gasoline.

After that, the most critical parts are first smeared. And then the entire gearbox is completely enveloped in grease.

Well, it remains to collect everything in the reverse order.

Gearbox grease

A special lubricant is used here, which should be called so. gear lubricant. It can be as under the brands under which the perfs themselves are produced. Makita, Bosch, AEG, etc. But it can also be produced by a company that deals with this particular type of product, for example, Ravenol, Shell, Xado, etc.

Some people use simple lithol or salidol for these purposes. But in comparison with special lubricating products, they dry faster, and they do not eliminate friction as much as necessary.

Drill lubricant

Everything is exactly the same here. Special greases for this purpose are called. for drills. And they are also usually produced by the same firms that make rotary hammers.

In the absence of a special lubricant, you can use graphite. But it does not remove heat from the shank so well, and this is important, since sometimes during long-term operation the shank sometimes becomes flattened, which is why it is difficult to extract it later.

How to lubricate a punch

Different types of lubricants are used to lubricate the gearbox and drill chuck.

Lubricate the chuck and drill shank

This operation is very simple, so its description will be rather short.

Rotary Hammer Drill Restoration | Makita HR3520

We just take the drilling lubricant and add it directly to the chuck. Another option involves applying it to the shank and then installing it into the socket of the cartridge. But no one forbids combining these two methods for reliability.

It is necessary to ensure that the grease is constantly present and, as necessary, add new one. If this procedure is neglected, the shank will overheat, which will either tear it off the rest of the drill or flatten it. So don’t be lazy and add.

That’s all there is to know about the chuck and shank.

As promised, I attach at the end of the link to the video with detaching the switch:

This is all the information I have on the lubrication of the hammer drill. I hope it was clear and accessible. On this I say goodbye. until we meet again!

Now grease all parts of the mechanical block with the recommended grease. Here is an example of how to properly lubricate rotating surfaces and here is another example of generous lubrication of a mechanical block.

You can’t spoil porridge with butter

So it is also allowed to apply lubricant. You can’t spoil porridge with butter!

The lubricated mechanical block must be closed with a plastic housing, pos. 14, black.
Place the body on top of the assembly and press the body down until the assembly is fully seated in it.
Backwardness, insert four bolts (pos. 10) into the body and tighten. Now it is the turn of the connection to the mechanical part of the rotor of the electric motor.

Installing the rotor

The helical gear of the rotor is tightly inserted into the housing of the mechanical block and pressed.

It remains to insert four self-tapping screws m4 × 60 pos. 57. and screw them into the body of the electrical unit.

The order of assembling the punch Makita 2450

Assembling the hammer shaft

First, you need to lubricate the inside of the cylinder (pos. 32) and insert the striker (pos. 30) into it.

It remains in the inner case of pos. 49 to put the lubricated barrel assembly, pos. 21, in place, putting it on the lubricated cylinder, pos. 32.
As a lubricant, it is recommended to use a special grease developed for Makita rotary hammers.
Lubricants are available in several types: Makita P-08361 and Makita 183477-5 SDS-PLUS.
Makita Grease 183477-5 SDS-PLUS is recommended for the gearbox. Makita grease 196804-7 is used for drill shanks.

Lubricants vary in color, but have exactly the same characteristics.
And what other lubricants are used in the Makita 2450 and 2470 hammer drill?

And here we have an assembled mechanical block.

Makita Rotary Hammer Assembly Procedure

The assembly of any mechanism should be started after careful preparation. It is necessary to prepare not only the parts, but also the tools, place, lubricant.

Of the tools, you can not do without pliers, screwdrivers, a hammer, a brush for applying lubricant.

And what is the assembly diagram of the Makita 2450 and 2470 rotary hammer?

Do-it-yourself assembly of a Makita rotary hammer can only be performed if the attached instructions are followed.

The task of the assembly process is to replace faulty parts with usable ones and ensure the interchangeability and operability of the tool.

Setting the mode selector lever

The mode switch is designed to transfer the clutch, pos. 39, to various positions and transfer the translational motion to the percussion shaft through the rolling bearing, pos. 41, to the cylinder, pos. 32.

Makita 2450 Punch Mode Switch Lever Assembly

On the axis of the inner case it is necessary to put the mode switch lever pos.82, from above the pressure spring pos.88, crush it with a flat washer pos.87. Fit the circlip, pos. 86. and fix.
The retaining ring must be carefully fixed. Turning the intermediate shaft, it is necessary to carefully check the correct operation and free movement of the cylinder in the housing. This must be done now so that it does not become clear at the end of the assembly that the assembly is assembled incorrectly.

Assembling the striking mechanism

And how to assemble the hammer mechanism of the Makita hammer drill?
The percussion mechanism is assembled from two assemblies: a barrel shaft with a spur gear and an intermediate shaft with a rolling bearing. A). A spur gear, pos. 19, is put on the barrel, pos. 21, and pressed by a compression spring, pos. 18.
To fix the spring, it is pressed with a washer 30 pos. 17 and secured with a retaining ring 28 pos.16.B). To assemble the striker, you need to put the ring 9, pos. 25 on the shaft of the striker, pull the rubber ring, pos. 26, press down with the metal ring, pos. 27.

Now we go to the opposite side of the barrel, pos. 21. On the other hand, the inner surface of the barrel must be lubricated with grease and the assembled striker, pos. 24, must be inserted inside.

Assembling the intermediate shaft and piston

Assembling the reducer assembly

The assembly of the reducer block is carried out on the inner casing pos. 49.

Inner body

By the way, there are cases when the axles pop out of the inner aluminum housing. Both axles are pressed into the housing.

The assembled intermediate shaft is inserted into the housing of pos. 49, the rolling bearing lever of which must fall into the hole of the cylinder hinge. In this case, the rolling bearing lever pos. 41 of the intermediate shaft must fit into the cylinder hinge, pos. 32, and the lower intermediate shaft bearing into the housing in the housing. This procedure is usually performed by rocking the structure until the parts are completely in the indicated places.

Assembling the intermediate shaft assembly

To assemble the intermediate shaft, it is necessary to put the rolling bearing, pos. 41, on the shaft, pos. 40, with the teeth to the shaft splines, and put the coupling, pos. 39, on the shaft splines.

Transfer of translational motion

On the opposite side of the shaft, put on helical gear 26 pos. 42, flat washer 8 pos. 45, bearing 608zz pos. 46 and retaining ring 8 pos. 47.
The intermediate shaft is assembled.

Chuck device

The main difficulty lies in the concept of how the drill is attached to the chuck and does not fall out, while making a reciprocating motion. To understand this, it is enough to look at the tool shank, which has four slots, two openings, i.e. to the end of the shank, two closed. Two closed grooves are designed to fix the shank, the length of the groove provides free movement of the working tool during operation.

The two open slots are responsible for ensuring the correct direction when and when inserting the working tool, that is, they are responsible for the correct position of the shank.
Through the closed grooves, the drill is fixed with special balls, which rigidly fix the tool, while leaving a longitudinal free entry within the length of the groove.

Construction and principle of operation of the SDS chuck

A special clamping device providing impact function and reciprocating movement of the working tool is called SDS chuck. (see fig. 2) This device is a quick chuck that does not need to be rotated to clamp the drill. In order to fix the working tool, it is enough to press on the chuck clamp and insert the shank into the socket.

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The work of the hammer mechanism of the punch

The name of the hammer drill assumes the presence of a slotting tool function, which can be combined with a drill function, i.e. rotation. In other words, the hammer drill combines two tools in one: the reciprocating movement of the working body and its rotation. The work of the rock drill is mainly intended for drilling holes in hard materials: concrete or stone.

Rock Drill Lubricant. How to Use?

To do this, it is enough to squeeze the mixture out of the tube into the open grooves and distribute it evenly along the entire length of the groove, and for closed grooves it is necessary to lubricate with a napkin without leaving a “thick” layer. After the end of the work, the shank must be thoroughly wiped off so that it is clean during storage, the residual film of lubricant is sufficient to prevent the metal from rusting. In addition to the Bush company, similar lubricants are produced by the companies: Makita, Metaba, Interskol.

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Rock Drill Lubricant

From the many different publications on the Internet, from which it is difficult to understand the need to lubricate the tips of the hammer drill bit. Some authors argue that it is not necessary to lubricate the shank grooves. as this causes the adhesion of abrasive dust and serves for more intensive wear of rubbing parts, some argue that the more lubricants, the better, and some argue about the need for lubrication, but only very thin a layer of oil. Let’s try to form our opinion on what kind of lubricant to lubricate the drill perforator. To do this, you need to understand the design of the perforator drill attachment point.

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How the striking mechanism works

The principle of operation of the impact mechanism is based on the vibrations of the eccentric bearing cage, made in the form of an ellipse (see Fig. 1). The inner race of the bearing receives rotation from the motor shaft and drives the elliptical outer race, to which a link is attached through the supports. The rocker transforms the rotational uneven movement into the translational movement of the piston, which is removed with its striker along the shank of the percussion tool, transmitting the impact impulse to the working tool, which has a free play in the fastening mechanism.

A special cartridge is used to mount the working body of the perforator, which is called SDS. cartridge. There are moving parts in the chuck that work in continuous motion under load, which must be lubricated to extend the service life of the tool, the question immediately arises as to why the drill bit needs to be lubricated and what kind of lubricant to lubricate the drill bit?

Punch chuck operation

After the firing pin of the piston strikes the end of the shank, inertia forces the bit forward, transferring the impact energy to the end of the working tool. When you press the drill body, the working tool returns to its original position and the striker strikes the end of the drill again. The stronger the pressure, the greater the recoil from the impact of the piston striker, and vice versa, if there is no return of the shank, the working piston will work idle.

So do you need a rock drill shank lubricant? Undoubtedly needed. Based on the operating conditions, it is clear that a thick and abundant lubricant is needed for the guides of the open grooves, for the closed grooves that work like a bearing, abundant lubrication is not needed, it is even harmful because balls operating under load will not help, but collecting dust in the grooves. this can.

To lubricate the shanks of the working tool, manufacturers produce a separate grease that meets the requirements for lubricating open and closed grooves. Such greases have been developed and are widely used, for example, Bosch released grease for Bosch rotary hammer drills, which are used to lubricate the shanks of working tools.

Rotary hammer drill lubricant. how to replace?

In the absence of specialized lubricants, any plastic lubricant (lithol, solid oil) can be used for these purposes, but it is better on a fat basis (LRW). this is only as a temporary measure (do not work at all without lubrication). The maximum delivery time via mail is about two to three weeks, this period is not critical and it is quite possible to get by with a substitute.

Foreign lubricants

As mentioned above, many foreign companies produce good oils for various electrical equipment. Hammer Lubricant Hitachi, Metabo, Makita and Bosch are widely known to consumers all over the world. They are distinguished by a wide range of products with a narrow specialization. This allows you to select the optimal oil option for each mechanism.

Also, the companies listed above are constantly developing new, improved properties of their lubricants. This allows you to remain the undisputed leaders. For professional equipment that is exposed to significant stress, these materials are absolutely essential.

Also one of the famous, high-quality lubricants is the products of the German company Lubcon. This brand produces synthetic rotary hammer oils. These products are environmentally friendly and have the best performance. The products of this German company are used for particularly heavy tool loads.


In addition to the drill, it is necessary to lubricate the chuck. First, it is cleaned of old oil and dirt. Then, in the amount specified by the manufacturer, it is applied to the surface. Replaceable drill bits require a similar procedure no less than drills and drills.

Before each installation, the shank is processed accordingly. Studying which lubricant for the hammer drill and its chuck is more suitable, it is necessary to consider all the proposals from the manufacturer. If there are none, you should give preference to trusted manufacturers.

They reliably protect the chuck from premature wear. The additives included in the substance reliably absorb dirt, dust and prevent the destruction of working surfaces.

Basic recommendations for changing lubricants

Professionals, in whose work it is often necessary to use a hammer drill, are advised to change the oil in accordance with the manufacturer’s instructions. However, this must take into account the frequency of use of the equipment as well as the operating conditions.

If there is excessive dust, you will need to replace it more often. It should also be noted that greases from different manufacturers should not be mixed. The additives included in the composition can be very different and conflict with each other. In this case, the reaction can be unpredictable.

If the warranty period has not yet expired, it is better to entrust the oil change to a service center. This will guarantee the quality of work. Do-it-yourself lubrication of the punch is possible. But you need to understand this technology in the smallest detail.


Liquid oils can be used for the gearbox. They are poured in the quantities specified by the manufacturer. There are special holes in the body. Through them, oil is poured inside. The covers close tightly sealing the liquid. The most popular today is the grease for the hammer drill Makita, Bosch.

It is important for the gearbox that the consistency of such products is liquid. Some models use creamy lubricants. But this is rather an exception.

Liquid oil leaves a thin but durable trace of the substance on the gearbox parts. It is also called film. Too liquid substances will not be able to maintain the integrity of the coating. A thick substance creates a too dense film. It impedes the movement of the gearbox.

The most popular products of this type today Makita P-08361, Bosch 1615430005.

History of the development of technology

than 150 years have passed since the hand-held hammer drill was first used in the work back in 1851. It was made for the needs of the mining industry and did not have the variety of modes that modern models now have. However, even then he significantly improved the work of the workers. It is not for nothing that the presented type of instrument is widely used by masters of various specializations.

Since that time, the tool has undergone significant design changes. One thing remained unchanged. the need for proper care. The perforator device is rather complicated. Some of its parts can wear out quickly.

To prevent this from happening, a drill lubricant must have a number of qualities. With the development of the presented power tool, its additional materials have also been improved. To understand how to choose a lubricant, it is necessary to consider the design features of the equipment.

Rotary hammer lubricant: which one to use

A professional or home craftsman must take care of the tool that he uses in his work. The duration of the equipment operation directly depends on this. The power tool needs good quality lubrication. This will protect components and mechanisms from wear and tear. At the same time, work will be much more effective.

Therefore, the lubrication of the rotary hammer is extremely important. It must be selected in accordance with the characteristics of the equipment model. For each brand, a lubricant with specific technical features is developed. The various additives included in the composition provide the most varied qualities of such products. Therefore, it must be selected in accordance with the operating conditions of the perforator.

High-quality domestic products

Today, the Russian and foreign markets are more and more conquered by oils for domestic power tools. Rotary hammer lubricant “Interskol”, “Bison” not only has a low cost, but also fully meets modern requirements. A wide assortment and constant laboratory control allow manufacturers to maintain a leading position.

The products are delivered both to neighboring countries and to Europe. These are high-quality, modern products. A wide range of models will allow you to choose the grease that best meets the requirements of technology.

Drill tool

During operation, the drill is exposed to significant mechanical influences. Pressure and heat can quickly damage the attachments and their seat. To avoid increased overheating, special substances are applied to the drill.

What kind of lubricant to use for a rotary hammer for this department, you need to find out in the instruction manual of the tool. The manufacturer specifies a list of products suitable for the lubrication of the drill.

They also keep dirt and dust out of the work surfaces. Each time before installing a drill chuck, it must be treated with a special material. The grooves of the nozzle are lubricated, but not very liberally. The efficiency of the work and its final result depend on the correctness of this action.

In this case, professional masters advise not to save on the quality of the lubricant. Otherwise, the instrument may overheat and require repair.

Rotary hammer lubricants: what it is, how to choose and use?

  • What it is?
  • What parts need lubrication?
  • Features of the choice of oil
  • How to properly lubricate parts?
  • Useful Tips

Rotary hammers require careful maintenance during use. For their long-term operation, different types of lubricants are used. Compositions can be mineral, semi-synthetic, and synthetic. Mineral minerals are made from petroleum products, therefore they quickly lose their operational characteristics, and they have to be changed quite often.

It is very important to choose a composition that will be suitable for the selected type of hammer drill.

How to properly lubricate parts?

When it comes to lubricating a rotary hammer at home, as a rule, they mean changing the lubricant on its individual parts by yourself. First of all, the gearbox should be lubricated. this mechanism is quite easy to disassemble, but it has a complex structure, so all actions must be carried out in a strictly defined order.

First you need to prepare the necessary materials:

  • dry clean cloth. rags;
  • locksmith tools that are needed to assemble the gearbox;
  • the lubricant itself.

In most cases, world-renowned manufacturers such as Bosch and Makita, in the operating manual, indicate the entire procedure for disassembling and assembling devices and issue important recommendations. The owners of rotary hammers, who are faced with such work for the first time, following these tips, can master all the manipulations quite quickly, spending a minimum of effort.

But if such a guide is not at hand, then you should work according to a certain algorithm.

  • The tool must be removed from dust and dirt.
  • When disassembling and then assembling the drill and hammer drill, you need to remember as accurately as possible the order of arrangement of all functional parts so as not to confuse them during disassembly. Better to use video recording.
  • All work related to the lubrication of parts is performed only after a certain time after the cessation of the drill. It must cool down, otherwise the cooled grease may cause the power tool to malfunction if it comes into contact with hot spots.
  • After taking out all the basic parts, including the gearbox, they are washed with spindle oil or gasoline, and then thoroughly dried from excess moisture. Pay particular attention to the gearbox.
  • Every detail of the device should be inspected as carefully as possible. In some areas, there is no lubrication, which means that you do not need to apply a new composition to this place.
  • After applying the composition, the gearbox is carefully assembled in the reverse order. If this is done correctly, then the hammer drill can be immediately used in work.

In addition to the gearbox, the drill should also be lubricated. In this case, the tail part of the mechanism, as in the first case, is washed with gasoline, cleaned and dried, and only after that it is carefully coated with specialized oils.

At the same time, it makes sense to handle the cartridge oil seal with your own hands, this will significantly increase its service life, and also protect against dust penetration. However, it should not be overlooked that it is lubricated only when a system with an open type chuck is mounted on the perforator. If the system is closed, there is no need for lubrication.

What parts need lubrication?

According to their physicists. technical parameters grease for drills, pistons, drills, as well as gear and other elements is almost the same as greases of all other types. This is a rather viscous substance with an oily structure, it is used to reduce the frictional force of rotating parts, thereby reducing the wear of the operating mechanisms.

Lubrication only reduces the wear of mechanisms, but does not eliminate it. But it is quite possible to significantly extend the period of their operation.

Over time, the lubricant is impregnated with dust, which is formed during drilling, grinding and crushing. this leads to a change in the degree of its viscosity. In this situation, friction, on the contrary, increases and the rate of wear increases, so the lubricant should be renewed from time to time. In order for the perforator to serve longer, you should clearly understand which parts can be lubricated and how often it should be done.

The device has a complex structure, including several complex units:

  • body with anti-vibration protection;
  • horizontally or vertically located electric motor;
  • piston system;
  • cartridge;
  • a gearbox in the form of a body. cylindrical bevel and worm gears are placed in it;
  • clutch required to stop rotation;
  • working nozzle (drill, as well as a chisel, lance or blade).

Almost all hammer drill mechanisms are subject to lubrication.

  • Reducer. This is the mechanism that is responsible for the speed of rotation of the main working nozzle. It protects the parts located inside from dust and dirt, therefore it is equipped with a protective coating. During the operation of the tool, its parts experience enormous loads due to the constantly increasing friction between them, which, in turn, leads to rather rapid wear.

In most devices, the gearbox is initially biased, however, inexpensive products are often lubricated with materials of very dubious quality, so they must be lubricated again immediately after purchase.

  • Cartridge. In addition to the gearbox, you need to lubricate the cartridge, as well as the landing site of the replaceable nozzles. The cartridge is initially dry, therefore, after purchase, it should be lubricated in the area in contact with the tail of the nozzle. this is where the maximum friction occurs. If it is not reduced in a timely manner, then the degree of wear increases sharply, which quickly leads to its damage.
  • Tail nozzle. This part wears out under the influence of impact forces, which, when heated, increase its abrasion. The shanks must be lubricated every time they are installed, but before that you need to wipe off the dust with a napkin and remove all dirt.

If the device is operating in intensive mode, the amount of grease on the working nozzle should be visually controlled.

Depending on the features of operation, perforators can work in different modes. some use the tool daily, others only from time to time, so there is no clear answer about the frequency of lubrication of the working parts of the tool. Usually, the operating instructions clearly describe the procedure for lubricating parts.

It must be remembered that structural parts that are not listed in it do not need lubrication.

When deciding to change the lubricant, they are guided by the moments:

  • the frequency of use of the punch;
  • tips outlined in the user manual;
  • warranty period.

If the hammer drill is still under warranty service, then only certified lubricants, which are listed by the tool manufacturer, should be used in the work. Otherwise, if the tool fails, the service center has the right to refuse to fulfill all warranty obligations.

What it is?

Lubricant is a viscous substance that reduces the coefficient of friction between tool parts. The work of the hammer drill is associated with a huge number of different rotational movements, which increases the degree of wear of structural elements.

When drilling, a lot of dust is emitted, which significantly impairs the operation of the device, which is why it requires periodic lubrication.

Features of the choice of oil

One of the main parameters that is taken into account when buying a lubricant is the viscosity of the oil. High quality products are usually expensive, but in this case, you do not need to save. The hammer drill is an expensive tool, so you should constantly take care of its performance. Typically, the types of grease are listed in the instructions, but if information is not available, then you can always consult the manager of the service center or the outlet where the device was purchased. Experts will select the optimal composition for the perforator.

There are also universal compounds that can be used to lubricate different types of drills. In recent years, graphite lubricants have been very popular because of their good viscosity and high quality level.

Experienced specialists confirm that many branded mixtures are of much lower quality than mixtures produced on the basis of graphite. In addition, they have a fairly affordable cost, so many people confidently make a choice in their favor.

For perforators, you should take substances such as grease and lithol. Litol. 25 is a high quality durable material that has a low cost. Therefore, it is very popular with power tool owners.

Do not forget that such mixtures can cause slight braking of rotating structures, and can also significantly increase the heating of the tool during operation.

If we talk about specialized lubricants, then it should be noted that to lubricate various parts, you need to use oils that are suitable for them. For example, oils that are used to treat a gearbox are unsuitable for lubricating drills.

And in order to lubricate the gearbox, a more liquid composition is required, which must completely cover the contacting parts, filling the free cavities. But if there are plastic parts in the gearbox, then the lubricant can only be silicone.

The transmission mechanism can also be lubricated with plastic compounds, however, not every technique can function without interruptions when using funds with a similar consistency.

Thicker mixes are suitable to reduce wear on the tail nozzles. Usually it is indicated on the packaging that they are intended for handling drills.

If you do not have the necessary funds at hand, you can stop at its graphite counterpart, although it removes heat much worse than specialized oil.

For cartridges, silicone grease options can be used. Lubricants are branded, which are manufactured by manufacturers of electrical tools, for example, Hitachi or Metabo, as well as AEG, Bosch or Interskol. They can also be produced by enterprises specializing in the production of lubricant mixtures.

The most popular brands are:

  • Bosch. produces oils for gear lubrication and tail nozzles;
  • Makita. purchased for drills;
  • Lubcon Thermoplex. manufactures products for gearboxes;
  • Turmogrease. multipurpose greases;
  • Nanotech. used for shanks;
  • Interskol. optimal for drilling drills;
  • PRORAB. is the composition used for the treatment of the tailpieces’ seats;
  • Kress. used for lubrication greasing drills.

Most popular among users are Bosch and Makita.

Useful Tips

Owners of drills and hammer drills often wonder about the frequency of lubrication. Determining the time frame is problematic, but on average, the optimal period for an oil change is considered to be a period of 12 months if the tool is operated at medium intensity.

Lubrication of many modern instruments is greatly simplified through the introduction of a number of useful improvements. For example, popular brands often make special holes in the technique, into which the lubricating composition is simply poured, and the need for its disassembly and subsequent assembly disappears.

Usually, such systems are designed very competently. in addition to the holes for filling the oil, there are also outlets through which the damaged grease is drained.

There are special marks on the surface of the device that directly indicate how much lubricant is needed to maintain the functional operation of the power tool.

The only thing that will be required in this case is to blow the hole as intensively as possible before use. To do this, you can use a compressor, and then flush the hole with gasoline.

Lack of lubricant is often the main cause of serious rock drill malfunctions. In the crushing mode, the lubricant is wasted in a significant amount, and if there is too little lubricant on the gearbox or drill, this often causes overheating of the entire device.

At the same time, there is no need to be zealous. if too much oily composition is applied, then the rotational speed of the drill will be reduced, and this also deteriorates the operational characteristics of the tool as a whole. In addition, excess grease will end up on work surfaces that are difficult to clean.

For information on how to properly lubricate the punch, see the next video.