What is the best way to lubricate the gearbox? Using gear lubricant when servicing an angle grinder. Is it necessary to lubricate an angle grinder?

Simply called the Bulgarian. Using this tool, craftsmen perform many operations. It, like any other equipment, requires full maintenance. Moving elements need lubrication. For this purpose special means are used.

There are several options. Adviсe experienced craftsmen will help you choose the best way. The grinder will work for a long time and efficiently.

The role of lubrication

Manufacturers of the presented power tools, when manufacturing the tool mechanism, provide moving, rubbing parts with special lubricant. The composition of such products may vary. Therefore, wondering How to lubricate the gearbox of an angle grinder (Devolt) this or another brand), you need to look at the instructions. The manufacturer can clearly define the composition options that are allowed to be used when servicing equipment.

Under heavy loads under which equipment must operate, as well as at high heating temperatures, lubricants prevent premature wear of metal parts.

Special components allow excess heat to be removed from rubbing pairs. Also, many manufacturers provide such important function of its products as an anti-corrosion effect. The complexity of the action allows you to ensure full operation of the tool and extend its operation for many years.

Specifications

To have an idea, how to lubricate the gearbox of an angle grinder (“Interskol” or products other manufacturers), it is necessary to consider the features of this tool. They influence technical specifications, which the lubricant must have.

The main and most loaded unit of the grinder is the gearbox. It consists of gears of a certain configuration. Proper lubrication can reduce friction and heat the moving parts. To do this, the consumable material must have a viscosity of no more than 800 Pa*s. Its dropping point must be at least 120ºС. The tensile strength is recommended at 120 Pa. This allows the product to form a durable film on the surfaces of the parts.

The lubricant must consist of soluble natural conditions components. It shouldn't cause harm environment and human health. Products from trusted well-known manufacturers have appropriate quality certificates, so they are recommended to be used for tool maintenance.

Signs of lubricant aging

Interested in how to properly lubricate the gearbox in an angle grinder, it is necessary to consider signs of lubricant aging. If the technician disconnects the gearbox from the angle grinder and looks inside, he can see obvious signs the need to change the composition.

When the unit operates, the lubricant sprays and settles in a dense layer on the inner walls of the housing. Over time, the substance dries out. In this case, lumps are formed. This indicates the need to change the lubricant.

As the temperature rises, the lubricant becomes more fluid. It may spread as it leaves the gearbox mechanism. To prevent friction, its amount must be controlled. If there is no thick layer of lubricant on the gears, then it is time to change it. Otherwise, the tool will quickly fail.

Foreign lubricants

To decide How can you lubricate the gearbox of an angle grinder?, it is necessary to consider a number of expert recommendations. They argue that you should choose the oil that is produced by the equipment manufacturer. Such compositions are not cheap. However, they have a balanced set of additives that ensure long-term operation of angle grinders. If the equipment user purchases other lubricants to service the power tool, the equipment may not even be covered by the warranty.

However, if desired, you can replace the compositions recommended by the manufacturer with similar products. For foreign models of angle grinders, products that contain additives identical to those used by the manufacturer of the angle grinder are quite suitable.

If molybdenum was present in the lubricant, it is necessary to purchase a composition marked MoS2. For Bulgarians who are served consumables second viscosity class, suitable composition NLGI2. The ISO standard corresponds to lubricants marked ISOL-XBCHB 2. If the product was manufactured according to German DIN quality standards, the new oil must contain the indication DIN 51825-KPF 2 K-20 in the marking.

Domestic lubricants

Considering how to lubricate the gearbox of an angle grinder domestic production, it is necessary to pay attention to locally produced compounds. Today Russian companies offer wide choice similar means. They have an affordable price.

Modern domestic materials for lubrication of angle grinder gearboxes are characterized by high quality. They meet high foreign standards. They are used not only in grinders, but also in other types of power tools.

The products of the Nanotech Metal Plaque Electra company are especially popular. However, there are other types of maintenance compounds for any angle grinder unit, including the gearbox.

Experienced specialists provide recommendations, What is the best way to lubricate the grinder gearbox?. They claim that if it is impossible to service the tool with a proprietary lubricant, you can choose a different composition. The second most popular lubricant in our country is recognized as CV joint lubricant. It is most often used for domestically produced tools. Some craftsmen choose lubricant for CV joints and for foreign angle grinders. However, the quality of the original compositions will be much higher.

It’s worse if the master gave preference to compositions such as litol or grease. These are universal tools. They are not able to properly service the grinder’s gearbox system. If they are used, the operation of the tool will not be complete. At the beginning of operation, the difference will not be noticeable. But over time, serious problems may appear in the operation of the unit.

Preparing to change the lubricant

Having explored the options, how to anoint the grinder gearbox, it is necessary to delve into the process of applying a new composition to the elements of the mechanism. This procedure is carried out according to the power tool maintenance plan established by the manufacturer. This must also be done when replacing gearbox parts or rotor bearings.

The waste will have a dirty color. This is due to the ingress of metal and dust particles into it. Before lubricating the gearbox, it is necessary to remove old oil from the surfaces of the mechanisms. The waste is removed completely.

To perform this procedure, automotive engine cleaning products are suitable. You can also use kerosene or gasoline. Using these products, traces of old lubricant are completely removed from the surfaces of all parts. After treatment, the gearbox must be thoroughly dried. Only after this you can start refueling.

Gearbox maintenance

Having selected and prepared the mechanism for this process, you can begin servicing the tool. The product must be mixed thoroughly. It is applied in a thin layer to the gearbox parts. The mass is applied to the bearings using the packing method.

If the product is packaged in a tube, its neck is placed on the side of the bearing cage. The composition is poured inside until it flows out from the other side. Enough grease is filled into the gearbox so that it covers the gear teeth. The excess will flow out when the grinder is in use. Lack of lubrication leads to increased heat and friction inside the mechanism.

Experts recommend adding such an amount of substance so that it occupies almost half the space of the gearbox housing. In this case, the operation of the tool will be correct. The manufacturer may indicate in the operating instructions some of the nuances of this process. They should also be taken into account during the maintenance process of angle grinders.

Control

Having studied How to lubricate the gearbox of an angle grinder, a procedure should be considered to ensure that the tool is properly maintained. The angle grinder must be assembled and connected to the network. When starting the engine, the quality of filling the gearbox with lubricant is assessed. To do this, the grinder is placed in idle mode for a short time.

If the gearbox begins to heat up after the test, and traces of lubricant appear from the gaskets, it means that there is too much substance in the mechanism. After disconnecting the tool from the network, you need to open the gearbox cover. There will be excess oil on the walls. They are removed from the equipment cavity.

If extraneous noise appears in test mode, insufficient lubricant was applied. In this case, the tool is disassembled and an additional amount of compound is added to the gearbox. Then the verification procedure is repeated. If everything is in order, the tool can be used as usual.

Having considered how to lubricate the gearbox of an angle grinder, as well as the procedure for this process, each master will be able to service his equipment independently without any problems.

Angle grinders (angle grinders) have become widespread among people who love to make crafts and perform various repairs and construction work at home. Such tools allow not only grinding various surfaces, but also cut stone, metal, plastic and other materials. Angles are reliable tools that require proper maintenance during operation, in particular, timely replacement of lubricant. Let's talk about choosing a lubricant for the gearbox and bearings of angle grinders.

Characteristics and features of lubricants for angle grinders

In an angle grinder, the main unit, which is subject to the greatest loads during operation of the tool, is the gearbox, which is a structure of helical gears. During operation of the angle grinder, the rotor creates a torque that is transmitted to the working tool through the small gear to the large gear. High-quality lubricant for the grinder gearbox significantly reduces the heating temperature, the friction force inside the tool and reduces the wear of its parts.

Bearings also require periodic lubrication. grinder, especially the spindle support bearing of the large gear. To do this, it is necessary to use only high-quality, reliable compounds recommended by manufacturers of grinders. Experts recommend using oils with the following technical characteristics:

viscosity up to 800 Pa·s;
tensile strength more than 120 Pa;
drop point more than +120°C;
absence of mechanical impurities;
resistance to corrosion processes;
the ability to firmly hold onto the parts of the angle grinder;
resistance to high temperatures;
water-repellent properties.

When choosing lubricants, it should be taken into account that in a modern angle grinder two types of bearings are used - for the electric motor and for the gearbox. For them it is necessary to use different compositions, since the bearings differ from each other different conditions work.

Materials from foreign and domestic manufacturers

For foreign brands of angle grinders, it is recommended to use specialized compounds developed specifically for such power tools. Most often, manufacturers of angle grinders recommend using lubricants that have this marking - MoS2 NLGI 2 ISOL-XBCHB 2 DIN 51825-KPF 2 K-20. The following information can be obtained from this marking:

MoS is an indication of the filler material used (number 2 is molybdenum);
NLGI2 – viscosity class, here it is the second;
ISOL-XBCHB 2 – confirms the compliance of materials with the ISO standard;
DIN, KPF, K-20 – confirms compliance with the German DIN quality standard;
the numbers 51825 mean that the material is classified as type "K".

This marking confirms the highest quality of the material, but such lubricants are very expensive. You can buy high-quality oil much cheaper; each manufacturer of grinders creates its own special lubricant, the use of which will extend the life of the angle grinder and guarantee great job tool. On the market you can find compositions from the companies Makita, Bosch, Hitachi, RedVerg, Metabo, Interskol and many others.

Manufacturers insist that their own lubricants must be used when servicing tools. The use of a composition of a different brand may result in denial of warranty service.

Considering the high cost of lubricants for power tools from foreign manufacturers, in some cases it is easier to use domestic analogues. IN recent years Russian manufacturers actively create universal formulations of the highest quality, not inferior to Western standards and suitable for a wide variety of instruments. In addition to gearboxes and bearings for angle grinders, they can be used for drills and rotary hammers.

Among all domestic lubricants on the market, they are most popular among consumers, thanks to the best ratio prices and quality, uses the company's products Nanotech MetalPlak Electra. This company produces a range quality materials, which can be selected for lubricating components of any tools.

Oil for grinder bearings

There are three bearings in the angle grinder - two of them are in the rotor, and one is on the large helical gear shaft. Lubricated bearings are installed in the tool, but during operation, if the power tool overheats and is used incorrectly, the oil may simply leak out. To refill bearings, compounds that meet several important requirements. The lubricant should:

increase sliding and reduce friction between constituent elements details.
distribute heat evenly and cool parts from overheating.
Protect the parts of the angle grinder from dust and dirt.
prevent corrosion processes.
withstand high temperatures - up to 150°C.

At the same time, the gearbox and motor bearings operate under different temperature conditions and under different loads. Therefore, for an electric motor it is necessary to use compounds with good protective qualities, preventing contamination of parts and ingress of moisture. The market offers a wide range of domestic and foreign bearing oils, and Russian products are more popular, as they are not inferior to their analogues in quality, but are much more affordable. To lubricate bearings, it is best to use brands VNIINP-235, VNIINP-246 And Ciatim-221.

Unlike gear oil, which must adhere firmly to the teeth as it rotates, bearing lubricants do not require as much adhesion.

Is it possible to make gearbox lubricant yourself?

There are often cases when you urgently need to lubricate the parts of an angle grinder, but suitable material not at hand. In this case, there is an urgent need to obtain suitable oil, which can be made by the owner of the tool with his own hands. When manufacturing such materials, it is necessary to take into account all the requirements described above.

To ensure high adhesion of oil for angle grinders, it is necessary to use automotive lubricant for CV joints as a basis for its production. In addition to good adhesion, it is also distinguished by its ability to work in conditions of heavy contamination and high loads, and can withstand high humidity and severe temperature changes.

The lubricant can be made on the basis of automotive lubricant for CV joints

It is necessary to add MS-20 liquid oil to this base so that the resulting mass has a suitable consistency. MS-20 should be gradually added to the base, preferably drop by drop, and the composition should be thoroughly mixed with a mixer. Excellent results shows a homemade mixture made from Cyatima-221 taken as a basis with the addition of TAD-17. They make a very high-quality and functional homemade gear lubricant.

Any power tool contains rotating parts in its design that are subject to increased wear as a result of friction. It is possible to prevent their premature destruction and extend the service life of the tool if you carry out timely preventative maintenance of rubbing parts. In an angle grinder, the main wear and tear is reducer gears. Reduce harmful influence friction can be achieved by applying lubricants to the surface of parts. Let's consider which lubricant for an angle grinder gearbox is best to buy.

With intensive daily use of the grinder, the lubricant in the gearbox should be replaced at least once a year. Often users do not adhere to certain deadlines preventive maintenance of the tool, and routine maintenance is carried out after the manifestation extraneous sounds while working. This is absolutely not correct method Gearbox maintenance.

A grinding noise during rotation or rattling indicates that wear has formed on the gears and they will soon have to be replaced.

Preventive inspection of the gearbox begins with separating its casing from the rest of the angle grinder. To do this, simply unscrew the four mounting screws.

The next photo shows that there is grease in the case, but it has collected on one side of the case, and there is not enough of it.

This happens because the angle grinder (angle grinder) is working at high speeds. Under the influence of centrifugal force, oil particles tend to move away from the axis of rotation. At long work the surfaces of the gears become completely dry, and without lubrication the metal wears off. In this case, it is enough to lubricate the gear teeth with the existing composition, then close the gearbox and work until the next maintenance.

You can often notice in the gearbox grains of oil mixed with dust. During operation, the grinder heats up, and these grains are sintered, solid particles interfere with the operation of the mechanism. This lubricant must be replaced.

How to lubricate the gearbox

The choice of lubricant for the gearbox has some features. Frequency angle grinder speed high, liquid oil will simply fly away from the rotating parts. The thick composition should withstand quite high temperature And don't get baked.

Ready-made lubricant

Manufacturers of power tools advise using special compounds own production. Such recommendations are given, in particular, by Makita and Bosch.

You can buy such products, but their cost is quite high, and the expense is not always justified. Firm "Interskol" more democratic in the type of materials used. Which lubricant is best? The lubricant for the grinder gearbox must meet certain requirements:

the viscosity of the composition does not exceed 800 Pa*s;
temperature of separation of drops from the main mass is not less than 120°C;
homogeneous composition without the presence of mechanical inclusions;
resistance to moisture.

The industry produces many types of lubricants, including special formulations for use in gearboxes. Best results show mixtures containing molybdenum disulfide as an extreme pressure additive. If we talk about foreign manufacturers, Castrol and Mobil have proven themselves to be excellent.

For ease of use, Mobil places its products in syringe-shaped tubes.

From domestic brands we can mention MS-1000, Limol. The use of grease, lithol or Tsiatim-221 does not give the desired result.

Homemade mixtures

If the required lubricant is not available for sale or if the user considers the price of the product to be unreasonably high, you can try to make the lubricant mixture yourself. There are several formulations using different bases. One of them is common

Transmission oil TAD-17 is added to the container with Tsiatim. Continuously stirring, add oil one drop at a time until the required consistency is achieved. The mixture should adhere well to the parts, not be too thick and not flow like liquid oil.

Another base can be CV joint lubricant in combination with MS-20 liquid oil.

How to lubricate the gearbox

It is not advisable to add the missing amount of oil to the gearbox housing: mixing occurs good composition with the already used one, and the new lubricant loses effectiveness faster. Therefore, when the gearbox casing and its housing and the cover are removed, the remaining old lubricant is removed. First, use a dry rag, and then wash away the traces with gasoline or kerosene. After the parts have dried, new lubricant is applied to them, and the gear housing is filled with lubricant by 2/3 of its volume.

After assembling the grinder, its shaft is rotated several times by hand to distribute the oil evenly. The rotation should be uniform, without jerking or jamming. After making sure that everything is fine, plug the device into the network and get to work. With timely maintenance, the tool will last for a long time.

Efficient operation, safety and long-term use any technology depends on the quality and timely care behind him. Parts that are subject to the greatest load require the most careful attention to themselves - such as, for example, an angle grinder gearbox.

During the use of the tool, the structure is subject to friction and, accordingly, overheats. Poor-quality lubricant can, having lost the required consistency, “leak” from the mechanism, which will entail additional stress, mechanical and temperature. It is also extremely difficult to control the volume of such a product.

The lubricant needs to be changed if:

“clumps”, dry and dried particles are found on the inner walls of the body;
the gears of the gearbox are not coated with lubricant in the required quantity;
a year has passed since the last replacement (with frequent use of equipment);
Replacement of gearbox parts and rotor bearings is carried out.

Requirements for lubricating fluids for angle grinder gearboxes

The master decides for himself how to lubricate the grinder gearbox. Universal remedy no - you need to select your own liquid for a specific instrument. A properly selected lubricant must meet a number of requirements, including:

be resistant to corrosion;
consist of natural components - including in order not to harm the master when inhaling vapors;
reduce the friction force of gears, and, accordingly, the heating temperature of the tool;
the consistency should be thick enough to stick to the parts, but with a viscosity not higher than 800 Pa s;
the consistency must remain stable and not change, “melt” or flow out of the mechanism when the temperature rises - minimum temperature drop point +120ºС;
ensure the operation of the tool in the range of up to +150 ºС;
The presence of metal impurities in the composition is not allowed;
tensile strength of at least 120 Pa;
be hydrophobic, have water-repellent properties;
protect the “insides” from dirt and dust.

Review of lubricants for grinders

If you lubricate a working tool with lithol or grease, saving on materials, there is a high probability that, ultimately, the equipment will refuse to work properly, no matter how high quality it is.

Some resources claim that preparing a liquid that satisfies all of the above points will not be difficult even at home. In one case, it is recommended to use lubricant for SDC in combination with MS-20 oil, in another case it is proposed to use a mixture of substances Tsiatim-221 and TAD-17. Despite numerous positive reviews, in both cases the consequences can be unpredictable - the manufacturer hardly took into account the possibility of refueling the gearbox technical means not reassigned compositions for it.

Foreign companies recommend to craftsmen how to lubricate the grinder, offering specially developed ointments. The manufacturer strongly recommends the use of the products specified in the operating instructions. On Russian market they really exist, but at a fairly high price. In this regard, the question of high-quality lubricants from domestic manufacturers arises:

if the original imported lubricant contained molybdenum, you should look for an analogue marked “MoS2”;
"NLGI2" - for industrial tools and others working on liquids of the second viscosity class (penetration - 265-295);
"ISOL-XBCHB 2" for ISO standard;
"DIN 51825-KPF 2 K-20" for DIN standards.

Among Russian lubricants, materials from the Interskol company stand out, long time engaged in the production and maintenance of power tools. Such lubricants, “tailored” to the specific features of the equipment, not only ensure first-class operation of the gearbox and meet many of the stated requirements, but are also pleasantly priced. Thus, a tube of lubricant will cost the buyer no more than 100 rubles, while the same lithiol costs only half as much. Whether it makes sense to save money in this case, or is it easier to pay a little more but get a quality product - it’s up to each master to decide.

Lubrication technology

First of all, it is necessary to completely remove the used lubricating fluid - usually, due to the presence of dust and dirt impurities, it darkens and becomes cloudy. Next, you should carefully check the tool parts for traces of lubricant, and the body cavities for foreign inclusions, including particles of broken parts. For more effective cleaning When using an angle grinder, it is recommended to use liquids used to clean the engine and its parts. Kerosene and gasoline are suitable for this purpose.

New lubricant is added before it flows out. reverse side- usually visually it occupies slightly less than half the volume of the gearbox. Masters believe that this is the only way to control whether the material is sufficiently filled.

If there is too much lubricant, it will not only find a place to “come out” during work at the most inopportune moment, but will also “interfere” with the tool. Power will decrease, and energy costs, on the contrary, will increase. However, as a last resort, you can always open the case and remove excess substance.

The situation is much more unpleasant if there is insufficient amount of lubricant. In this case, there is a high probability of poor-quality operation of the gearbox and the tool as a whole. A characteristic “bad” noise is detected, indicating high voltage tool, gear friction.

Now you know what you can use to lubricate the gearbox of an angle grinder. Approach the choice of material for your instrument with all responsibility and care. In return, the equipment will repay you with long, uninterrupted service, and even expensive original lubricant will definitely pay for itself.

Lubricant for a rotary hammer allows you to extend its service life and make its use more efficient. In order for the effect of a lubricant to bring the expected results, when choosing it, you should take into account not only the characteristics lubricant, but also technical parameters device for which it is planned to be used. When choosing how to lubricate a hammer drill, you must also keep in mind the fact that various parts of such equipment need different types lubricant.

There is an opinion that the presence of lubricant on the moving elements of the hammer allows you to postpone its replacement until long term. Meanwhile, this opinion is fundamentally wrong, and in order to change it, it is enough to get acquainted with the principle by which lubricants work.

Why do hammer drill elements need lubrication?

Lubricant, including that used for a hammer drill, is a viscous substance, the use of which is necessary to reduce the coefficient of friction between structural elements of a mechanical device moving relative to each other. Thus, lubricant only reduces friction, but does not eliminate it completely, so the lubricating composition is gradually saturated with wear products of rubbing parts - metal dust. As a result, not only does the viscosity of the lubricant change, but it itself becomes the cause of more intensive wear of the equipment.

It should immediately be noted that it is viscosity that is most important parameter, which you need to focus on when choosing a lubricating composition of a certain type.

How to choose the right lubricant for a certain model hammer drill? First of all, you need to take into account the recommendations of the equipment manufacturer, who must indicate both the required type of lubricant and the frequency of its replacement. It is especially important to focus on such recommendations before they expire warranty period to the hammer drill. Otherwise, if the device breaks down, you will not be able to take advantage of the manufacturer’s warranty.

Many owners of rotary hammers, after the warranty period has expired, begin to use not branded compounds for lubrication, but their cheaper analogues - litol or grease. Of course, such lubricants are not capable of harming the structural elements of the hammer drill, but when using them, you should keep in mind that they should be replaced much more often.

Gearbox lubrication

The rotary hammer gearbox is the most complex design component of the device, so it requires special attention. Lubricating the rotary hammer gearbox is not so difficult, but self-assembly a previously disassembled unit can cause serious difficulties. If the hammer drill is still under warranty, then with questions about lubrication of its gearbox, it is best to contact a specialized workshop that provides warranty service for such equipment.

If the hammer drill you own is not covered by any warranty or the warranty period for your equipment has already expired, and the authorized service center located far enough away, you can lubricate the gearbox yourself, observing maximum care and attention. For this you will need:

a set of plumbing tools with which you will assemble and disassemble the hammer drill gearbox;
clean rags;
the composition itself for lubrication.

“Native” lubricant for the Makita P-08361 gearbox. Refilled during initial assembly of the tool and recommended for maintenance

It is better if the lubricant is a branded product specifically designed for equipment of a certain type. trademark. So, it could be a lubricant for rotary hammer Makita or Bosch hammer drill lubricant. If you don’t have a branded lubricant and you can’t buy it, you can also use inexpensive domestic lubricants.

It is very important that you have instructions for the hammer drill that you are going to lubricate. Naturally, if you own a Makita or Bosch rotary hammer, this should be an instruction manual for the equipment of these particular brands.

After carefully studying the instructions for the hammer drill, you can begin the procedure for lubricating its gearbox.

Before disassembling, the hammer drill should be thoroughly cleaned of dust.
When disassembling the gearbox, it is advisable to immediately remember how its structural elements are located in it. It should be borne in mind that it is not recommended to disassemble and lubricate the gearbox immediately after finishing using the hammer drill. This is explained by the fact that still hot gearbox parts, when exposed to a cold lubricant, may lose their physical characteristics.
After all components of the gearbox are removed from its housing, they should be thoroughly washed with gasoline or spindle oil and wiped dry.
Inner part The gear housing also needs to be washed, wiped (as far as possible) and allowed to dry completely.
When disassembling the hammer drill gearbox, you can pay attention to the fact that there is no lubrication on some elements of its design. This only means that such parts do not need lubrication and there is no need to apply it to them.
As mentioned above, it is better to use a branded lubricant for the gearbox of a drill or hammer drill, which has a number of advantages. In particular, branded lubricants retain their original characteristics much longer, so they can be used much less frequently. In addition, the proprietary lubricating composition has the following important quality, as water resistance, so it effectively protects the metal parts of the hammer drill from moisture and, accordingly, from corrosion. As a good alternative to branded lubricants for the gearbox of a rotary hammer or drill, you can use Metabo oil, the cost of which is quite affordable.
After lubricating all elements, the gearbox must be carefully assembled, observing the reverse sequence.

Caring for a hammer drill includes not only lubricating its gearbox, but also applying a lubricating compound to the shank of the drill used.

Before performing this procedure, the tool shank should be thoroughly cleaned. After this, a special lubricant for hammer drills or regular lithol is usually used. In addition, if hammer drills have a chuck open type, it is advisable to first wipe and treat its seal, which will provide more reliable protection of the inside of the device from dust getting into it.

Causes of equipment overheating

Many home craftsmen have a question about how to use a hammer drill so that its gear housing does not overheat. First of all, you should find out the reason for the excessive heating. One of these reasons may be too large number lubricants in the inside of the gearbox, which also negatively affects the performance of the device.

The reason for the intense heating of the rotary hammer gearbox may be that it internal details Insufficient amount of lubricant is supplied. This can happen in cases where the hammer drill is used for too long in the chiselling mode.

Another common reason for the device to overheat is that the holes through which cooling air flows to the hammer drill motor are clogged. In such cases, it is necessary to thoroughly clean the rotary hammer from dust and switch it to normal drilling mode for a while. When operating in this gentle mode for about half an hour, the temperature of the gearbox housing should decrease.

With proper care technical condition hammer and compliance with all recommendations for its use, the gear housing should not overheat under any operating conditions.

Proper care of a drill with a hammer drill function

A hammer drill is a hybrid of two types of equipment used to create holes in various materials. Unlike a classic hammer drill, this drill has some design flaws, which makes it maintenance more complex and not very convenient. Such disadvantages include, in particular:

lack of a special container into which the lubricant is poured;
the difficulty of servicing the cartridge due to the peculiarities of its structure.

The main care for a drill with hammer drill functions is that after each use, the drill of such equipment (including the tail section) must be thoroughly cleaned of drilling waste, and before inserting such a tool into the drill, a small amount should be applied to its shank lubricants (you can use regular grease). If the amount of lubricant on the shank is excessive, this will not harm the tool itself or the equipment used, but may negatively affect appearance surface you are drilling, as excess lubricant will spray out of the rotating chuck.

As a rule, drills with hammer drill functions are purchased for household use, since their price is quite affordable, and with their functions when performing simple repair work They do a pretty good job around the house. Despite the fact that these power tools differ in the features mentioned above, caring for a hammer drill does not take much time and does not cause problems even for not very experienced users.

Lubricant selection

Before dealing with the question of how to lubricate a hammer drill, you should become familiar with the means that can be used to carry out such a procedure. As a rule, the manufacturer indicates the type or brand of lubricant that is optimally suited to the equipment of a certain model. In any case, such instructions are in the instructions for hammer drills produced under reputable brands. If similar recommendations no, you can ask the consultant in the store what kind of lubricant is for the hammer drill you are purchasing fits better everything.

A universal and relatively inexpensive lubricant that can be used for most modern models rotary hammers, is the oil poured into diesel engines. Compositions based on graphite are actively and quite successfully used to lubricate hammer drills. Such compositions, in particular, are used to lubricate open-type worm gears.