Grinder, like other ones used on the farm and professional activity The tool requires regular maintenance. Operating efficiency and long service life are ensured by timely maintenance.

Grease for an angle grinder is the main component when servicing the device. To improve performance, you should choose the right composition.

Substitution rules

The main modular unit of an angle grinder is the gearbox. It takes on the bulk of the load during operation. It contains helical gears that transmit torque from the rotor to the operating element. Lubricating the grinder gear reduces the friction force in the gears. It also helps reduce the temperature that occurs during operation.

In what cases should the lubricant be replaced? During operation, the lubricant coating scatters along the sides of the gearbox housing. After a short time it begins to dry out and lumps form. Lumps can accumulate dust and metal particles generated during operation. If, when disassembling the grinder, lumps are found, then new lubricant is needed for the grinder gearbox.

There are situations when it is necessary to replace parts of an angle grinder gearbox or a rotor bearing. In this case, it is necessary to disassemble the device. Accordingly, the lubricating layer will be removed. Instead, new material is applied.

During long periods of operation, the grinder's gearbox heats up. Accordingly, the coating used also begins to heat up. When heated, the lubricant becomes liquid and may leak out. As a result, little of it remains inside. This can be seen if you examine the gears. They should have thick layer. Thus, with a small amount of lubricant coating, it is necessary to replace it.

Lubricant properties

The lubricating coating for gearboxes is characterized by the following properties:

• viscosity no more than 800 Pa*s;
• drop falling temperature is not less than 120°C;
• tensile strength not less than 120 Pa;
• absence of mechanical impurities;
• corrosion resistance;
• high melting point;
• water repellency.

It is necessary to choose a lubricant that does not contribute to the occurrence of nicks in areas of contacting parts.

When choosing a coating, you should be guided by the condition that the lubricant coating for the bearing parts of the gearbox differs from the lubricating coating of the engine bearings.

Types of lubricants

Many people are interested in the question: how to lubricate the gearbox of an angle grinder so as not to damage the tool and increase its efficiency. The following types of lubricants are possible:

• the brand of lubricant products corresponds to the brand of the tool manufacturer;
• composition for CV joints;
• grease and lithol.

Many tool manufacturers strongly recommend using a suitable lubricant during maintenance to avoid negative consequences during operation. When using a composition from another manufacturer, the tool is not subject to warranty repair.

Many people will think that lubricating the gearbox with the manufacturer’s compound is very expensive. After all, the cost of such materials is quite high. In addition, there are manufacturers that do not produce lubricants.

In this case, you can purchase CV joint lubricant, which wide range present on the shelves of auto stores. This material allows you to achieve positive results during operation. And many people use this lubrication option. However, it is worth noting that this option is worse than the first.

When choosing solid oil or lithol as a lubricant, there is a risk of causing the instrument to quickly break down. This is due to the fact that these substances are not intended for use in elevated temperatures and great friction. Therefore, after some time, problems may arise during the operation of the tool.

Thus, the best option lubricant for angle grinders is considered to be the one that corresponds to the brand of the tool manufacturer.

Stages of the lubrication process

Lubrication can be done in special workshops or independently. When performing lubrication on your own, you must remember that a lubricant that does not match the brand of the tool can cause tool failure. The process of processing with new lubricants implies the complete removal of the old lubricant layer. The parts and walls of the housing must not contain remnants of the old coating.

Stages of lubrication of an angle machine gearbox:

• disassemble the grinder;
• wash the sides and cavities of the gearbox with kerosene or a solution of kerosene and gasoline;
• dry the washed parts;
• mix new lubricant;
• coat bearings and cavities;
• assemble the tool.

When applying, the question arises: how much lubrication is required? Applying a large amount of lubricant will cause excess volume to leak out during operation. If the content is low, the operation of the gearbox will be difficult and will lead to rapid failure. Consequently, such a volume of material is placed in the housing that the gear teeth are hidden under the surface of the applied layer. The approximate content of the coating of angle grinder gearboxes is less than ½ the volume of the entire gearbox.

Checking the accuracy of application

The grinder's lubrication, namely its abundance, is checked in idle mode during a test run for a short period of time. After starting, the gearbox begins to heat up. If some of the lubricant leaks out when the gearbox is warm, then it is necessary to disassemble the tool again and remove the excess.

If, as a result of a short period of idling, signs of noise or rattling appear, then the volume of the applied layer must be increased.

Getting high-quality lubricant with your own hands

If you want to use good composition lubrication of the angle grinder gearbox, but there is no possibility of purchasing it, then you should make it yourself using CV joint lubricant. Do not forget that the material used must have good adhesion.

The composition must adhere firmly to the rubbing elements. The composition for CV joints is characterized by increased adhesion and the ability to work at high temperature loads.

To prepare the mixture, a composition for the CV joint and MS-20 oil are taken to enhance the required viscosity and density. Using homemade mixer, the composition is mixed with a small supply of oil (drop by drop).

You can also obtain material from a mixture of lubricants Tsiatim-221 and TAD-17. The main component is Tsiatim.

Popular brands of lubricants

Foreign-made gearbox lubricants are much more expensive than domestic ones. The Bosch brand is widely known among foreign brands. It is used to lubricate tools of the same brand, as well as other models of grinders. The coating has good performance properties.

According to many users, the Huskey brand is considered a universal lubricant. It is perfect for many gearboxes.

Among domestic manufacturers, the products of the company “Nanotech” are known under the name “Metal Plak Electra”. Lubricants of this brand are used for many components of electric tools.

Operating an angle grinder without a lubricant coating will first lead to minor operational problems and then to failure of the tool. Lubricated gearboxes will extend the life of the tool and increase productivity. The master himself decides which lubricant is suitable for the existing device.

For good work, the grinder needs lubricant that will not leak under heavy loads and long work, but will reliably lubricate the part over its entire surface during the entire operating time. It must also be environmentally friendly. Pay attention to well-known and already proven lubricant manufacturers, such as Lubcon, Hammer, Makita, Hitachi. Experts advise, if possible, to choose a lubricant from the same company as your tool.

Deciding how to lubricate the grinder, Special attention Pay attention to materials based on silicone or silicone oil. These lubricants are excellent for tools that operate at a range of speeds from slow to high and under all loads. They are highly resistant to oxidation, protect against corrosion, and are easily combined with plastics and elastomers. The composition contains exclusively silicone and lithium thickener, which makes them safe from an environmental point of view. The consistency is maintained at temperatures from -50 to +190 degrees Celsius.

Lubricant for the grinder and its precise markings

One of essential elements grinders are a gearbox. When the tool is working, it becomes very hot, because it is behind it that the gears rotate, which leads to strong heating. It is for these reasons that the gearbox casing is made of metal, because it removes heat quickly enough. But the casing alone is not enough to cope with high temperatures; proper lubrication also plays a huge role.

Every specialist, when asked how to lubricate the gearbox of an angle grinder, will answer that it is best to use a special lubricant for angle grinders. It is specifically designed for the work and conditions in which this tool is used. This lubricant has a specific Blue colour. A good, high-quality lubricant for an angle grinder gearbox has the following marking: MoS2 NLGI 2 ISOL-XBCHB 2 DIN 51825-KPF 2 K-20. Marking means:

• MoS2 – molybdenum disulfide acts as an additive;
• NLGI 2 – second viscosity class;
• ISOL-XBCHB 2 – compliance with ISO standards;
• DIN 51825-KPF 2 K-20 is the most important point, it means that the lubricant complies with German DIN standards.
• 51825 indicates that the material corresponds to Type K grease.

The price for such a mixture is very high, but there is a cheaper lubricant with similar qualities: KPF 2 K-20, where:

• K – intended for plain bearings;
• R – with extreme pressure additives;
• F - with solid filler;
• 2 – consistency corresponds to NLGI;
• K – maximum operating temperature +120 degrees Celsius;
• 20 – minimum operating temperature.

Note! The use of special lubricants for angle grinders will provide the maximum guarantee of reliable operation.

About tools under warranty

Particular attention should be paid to lubrication of angle grinders that are under warranty. It is not recommended to do this yourself; this work should be entrusted to specialized workshops. There will be used high-quality and original materials with the correct dosage. At home, you can apply the mixture incorrectly, which will negatively affect the longevity of the tool.

Various lithols and solid oils for lubricating gears and bearings are strictly prohibited. In addition, opening the case on warranty instruments will be a reason for refusal of service, and the use of “unauthorized” lubricant is generally a gross violation of the rules for operating an angle grinder. The only exceptions are external nodes, which, according to the instructions, must be processed regularly.

IN modern construction It is very difficult to do without a reliable and high-quality tool. One of the necessary electrical appliances is a hammer drill. It is with its help that you can drill holes in almost any surface or make a channel for wires; this tool also replaces a drill and jackhammer with almost no problems. This replacement is possible due to the fact that this equipment produces both rotational movements, and longitudinal-axial. The article will discuss which lubricant to lubricate a hammer drill in order to maximize its service life.

The very first hammer drill appeared in 1851; it was then used in the mining industry, was manual and did not have such rich functionality. But after a little more than 150 years, he became one of necessary tools For home handyman and a professional builder. The design of the hammer drill is quite complex and in order to preserve it for a long time and not subject to premature repair, it is recommended to carefully monitor its condition. First of all, it is necessary to lubricate certain parts. This process will help to significantly extend the life of the electric assistant.

To understand why a hammer drill requires lubrication, you should get to know its structure and operating principle in more detail.

Main structural elements of a rotary hammer

In order for the hammer drill to perform its direct functions, it is necessary to apply a certain force towards the surface being processed. It is possible to obtain such an impulse thanks to a pneumatic or electromagnetic mechanism. The power of the tool depends on the impact energy and the power of the electric motor. That is, the higher the values ​​in joules and watts, the more powerful the tool.

To the main elements of a rotary hammer with electromagnetic type impacts include:

• electromagnetic coil (usually 2 pieces);
• core;

And the elements of a tool with a pneumatic type of action include:

• piston and cylinder;
• striker;
• drill (or other attachment).

Rotary hammers with pneumatic impact are more common today than those with electromagnetic impact. There are several options for their execution, the main two, which differ from each other in that the first uses a swinging bearing (the so-called “drunk”), and the second uses a crank mechanism. Tools with the first option are lightweight and compact, while with the second option, as a rule, they are medium or heavy in weight.

Also, the tools are usually equipped with:

• chuck - necessary for securing the nozzle, there are several types: SDS Plus (installed in light tools) and SDS max (for medium and heavy devices), the first type has the ability to install a drill with shanks with a diameter of 1 cm, with the second type the shank diameter is 1 .8 cm, also SDS Plus has three operating modes (drilling, drilling, impact), and SDS max only two (drilling and impact). It is also possible to install a traditional jaw-type chuck (a hollow cylinder with an adjusting ring and metal cams that hold the nozzle);

• chuck replacement system - quick change from one type of chuck (SDS) to another (cam);
• reverse - changes the rotation of the drill, it can be of brush and electronic type;
• gearbox - is a single housing (crankcase) in which various gears (bevel, cylindrical, worm) are located, this arrangement of parts allows you to protect the main mechanism from damage and dirt and dust, the main function of the element is to change the speed of rotation of the shafts;
• vibration protection - there are passive or active (labeled AVS, most heavy hammer drills are equipped with) type, they dampen vibration from impacts, that is, they reduce it, but this effect cannot be completely removed, the active anti-vibration system has a shock-absorbing device - a counterweight with a spring, and the passive system consists of rubber pads and a rubberized handle, that is, it protects a little worse and is installed only on light household tools;
• various indicators;
• speed controller;
• safety clutch - necessary to stop the rotation of the cartridge in cases where the nozzle jams during operation, there are two types: spring-cam (consists of coupling halves with teeth and a spring) and friction (consists of disks);
• electronic immobilizer - to stop the hammer drill in emergency situations, for example, in cases of power surge, to avoid problems with the tool and maintain its performance;
• motor - there are two types: transverse (vertical arrangement, has a larger area for cooling and is considered more protected from dust generated during operation, as a rule, used in cases where long-term drilling without breaks is necessary) and longitudinal (horizontal arrangement helps to make the tool more balanced, that is, increases its ergonomics, and also more compact).

Having understood the structure of the hammer drill, you should know what kind of care the tool needs.

How to lubricate a hammer drill

The main purpose of a hammer drill is to drill, chisel and drill various surfaces. As a rule, most materials that this tool works with have a tendency to become dusty. Small particles falling on internal parts clog the device. It should be taken into account that the elements are in motion, during which they come into contact with each other, and, therefore, their abrasion may begin. To maintain the functionality of the tool, it is necessary to regularly clean and lubricate it. Only with such care is it possible to maximize the service life, avoid early breakdowns and expensive repairs.

Important: lubricant has several main types. One type is used for the gearbox and a completely different type is needed for drills or drill bits. Each device has detailed instructions manual, which specifies clear lubrication intervals. These are the recommendations that should be followed.

Exist general rules for all types of rotary hammers.

How to lubricate a hammer drill gearbox

• Thus, to lubricate the gearbox, it is most often recommended to use compounds in the form of liquid oil, which is poured in a certain dose into the tool body (into holes specially designed for this purpose). This oil fills the gear housing and is reliably isolated inside using caps installed on the holes or bolts. During operation, the parts are evenly coated with this product. The most popular manufacturers of oil for lubricating gearboxes are Bosch and Makita.

• As an example, we can name two popular types of products from these manufacturers, which are used during initial assembly or during tool repair:
  • lubricant “Makita P-08361” 30 ml, approximate cost 100 rubles;
  • oil “Bosch 1615430005” 45 ml, price about 300 rubles.

Advice: there are also plastic compositions for gearboxes (in the form of a cream), but it is worth considering that not all models of tools can work stably with products of this consistency. Every owner of a rotary hammer should have a gear lubricant. But if the hammer drill is under warranty, then it is best to carry out such an operation using the services of service centers, especially if there are no special holes (that is, if it is necessary to disassemble the tool).

How to lubricate a hammer drill

• Lubricant for rotary hammer drills is used to reduce wear on bits and also prolong service life hammer drill (including by reducing the amount of dust penetrating inside). Lubricant is applied before each insertion of the drill into the chuck; for this purpose, the grooves of the nozzle are lubricated with a small amount of the product. Before conducting this operation the first time, you need to carefully read the instructions for the instrument. This is necessary in order to understand how to properly disassemble/assemble a hammer drill without damaging its elements and achieve proper operation.
• The amount of lubricant and its quality determine how the power tool will function. If the ratio is selected incorrectly, the device may overheat and even fail. Therefore, before using this or that lubricant, it is worth checking whether this manufacturer and type of product are included in the recommendations in the operating instructions for the hammer drill. The most common compositions for lubricating drills are also produced by the Bosch and Makita brands, only the products have a thicker consistency.
• When starting to lubricate, you need to rinse and blow out the tool, wipe it dry and only then apply a new coat. protective agent. Those parts that do not need to slide should not be lubricated, as this can only damage the hammer drill. Such elements include, for example, a transmission coupling.

How to lubricate a hammer drill chuck

• The composition should also be applied to replaceable drill bits in the form of a cartridge. The amount of the substance must be as indicated in the instructions. Too much or too little of it can cause the instrument to fail.

• It is recommended to lubricate the shanks before each installation; after removing the nozzle, it must be wiped from dust and waste oil.

Selecting the type of lubricant is not a problem; the instructions include clear recommendations, if they are not available, then you can choose almost any product from trusted manufacturers.

Which lubricant to buy for a hammer drill

Lubricant for Makita rotary hammer

A Japanese corporation that has been producing various construction tools. The very first owner of the company was Masaburo Makita, after whom the company still bears its name. Today, the corporation is one of the leading manufacturers of power tools (350 types) and accessories (4,500 varieties) for them.

How to disassemble and lubricate a Makita hammer drill video

Product range (lubricants):

• “042005-4A” - for SDS+ rotary hammers (packaging 16 kg);
• “042024-0A” - for the gearbox of SDS+ rotary hammers (packaging 2.5 kg);
• “P-08361” - for gearboxes of rotary hammers SDS MAX (packaging 30 grams);
• “183477-5” - for SDS+ rotary hammers (packaging 30 grams);
• “181573-3” - lubricant for drills (packaging 100 ml).

Bosch rotary hammer lubricant

• The founder of the German concern was Robert Bosch, an engineer and businessman who in 1886 opened a small company for the sale and manufacture of electrical equipment. And despite the fact that initially the staff consisted of only one mechanic and one electrical engineer, the company was able to reach unprecedented heights.
• Today it is a leading supplier of various categories of construction and consumer goods, including power tools. The company's subsidiaries are located around the world, including Russian Federation. And, perhaps, in every city in Russia there is an official service center"Bosch", and since 2007 a plant for the production of equipment was opened in the city of Engels.
• Many technologies that are still considered innovative today have been successfully tested in this company for many years. Bosch tools are reliable and ergonomic equipment with the most advanced achievements. The corporation's policy is not to sell as many instruments as possible, but to ensure that each purchased device lasts as long as possible. That is why they began to produce specially developed branded products for the care of power tools, including rotary hammers.

Product range:

• “1615430009”, “1615430010” - lubricants for inserted instrument tips (30 ml packaging);
• “1615430012” - oil for rotary hammers (packaging 1 l);
• “1615430014” - lubricant in tubes for hammer drills (45 ml packaging);
• “1615430015” - lubricant in tubes for rotary hammers (225 ml packaging);
• “1615430016” - lubricant for hammer drills (packaging 1 kg);
• “1615430019” - lubricant for rotary hammers (packaging 1 l);
• “1615437509”, “1615437511”, “1615437512” - lubricants for hammer drills, complete with a sealing frame (50 ml packaging);
• “3605430008” - hydraulic oil (packaging 1 l).

Lubricant for rotary hammer Lubcon

• A German company founded in 1980 in Frankfurt. Produces various types synthetic lubricants for power tools. Products are supplied all over the world, including Russia. The company positions its products as environmentally friendly safe compounds. Only components that meet the highest requirements are used for their development.
• Lubricants are particularly thermally stable, they do not oxidize and excellently prevent friction even at maximum load. These are waterproof compounds that guarantee long service life for most power tools.

Product range for power tools:

• "Lubcon Thermoplex ALN 250 EP" - lubricant for gearboxes;
• "Lubcon Thermoplex ALN 1002" - lubricant for hammer drills;
• "Lubcon Turmogrease NM 4602/0" is a universal lubricant composition.

Lubricant for hammer drill NANOTEK

The Russian company produces synthetic, semi-synthetic, mineral, semi-liquid and plastic lubricating compounds. Products under this brand first appeared on the Russian market in 2004, and since then Nanonet has been annually increasing the range of its products. Lubricants and oils meet the high demands of modern times.

Product range:

• MetalPlak Electra lubricant is a plastic mass for processing drills (packaging 125 grams).

Metabo rotary hammer lubricant

• The company first began its activities in 1924, its founders are considered to be Albrecht Schnitzler and Julius Klos. The original plans of the company's founders were to produce instruments that would meet the growing technological needs of our time. Initially, the instrument was hand-operated, and only in the 30s of the 20th century did they begin to manufacture electric devices.
• The company tries to make products that are durable. And for these purposes, they create a whole line of care products for power tools, including lubricants for rotary hammers. Most often these are plastic products intended for drill shanks.

Product range:

• "Metabo 631800000" - Lubricant for drills (pack of 100 ml).

Lubricant for hammer drill Zubr

The company is Russian manufacturer various materials and instruments that have proven themselves well in both the domestic and foreign markets. Products have affordable price And good quality, the product range is constantly updated with new product categories. All products are tested in the company’s laboratories and only after their successful completion are delivered to design department. Finished products must undergo quality control and then go on sale.

Product range

• “Zubr-Expert 60” - lubricant for drills (60 g packaging);
• “Zubr-Expert 125” - lubricant for drills (packaging 125 g);
• “Zubr ZSB” - lubricant for drills (packaging 125 g).

Lubricant for rotary hammer Interskol

The Russian enterprise is today one of the leading domestic manufacturers of power tools. The company has extensive experience in the development and production of various products and has its own design and testing bureau. Factories are located in Russia and Spain, and the products themselves are supplied to many European countries.

How to disassemble and lubricate an interskol hammer drill video

Product range

• “Interskol v9000327” - lubricant for drills (packaging 125 g);
• "Interskol v9001698" - lubricant for drills (packaging 60 g).

Lubricant for rotary hammer PRORAB

Russian company producing power tools, accessories and related products, created in 2005. Today it has more than 1000 names of its products. The manufacturer is distinguished by high-quality products at an affordable price.

Product range

• “PRORAB 0125” is a specialized lubricant for drills, plastic consistency (packaging 125 g).

Lubricant for rotary hammer Kress Elektrowerkzeuge

The German company, which produces various pneumatic and electric tools, was founded in 1928 and has established itself as reliable manufacturer. All tools have a company warranty of up to two years, and in some cases up to 10 years (subject to service in specialized service centers).

Product range

• “Kress 98035301” - lubricant for drills (packaging 50 ml).

Litol

• Sometimes in household use a lubricant such as "Litol-24". This is a petroleum oil that thickens special composition. The product is characterized by chemical and mechanical stability, heat resistance and frost resistance (does not lose its properties at temperatures from +120 to -40 degrees), and also has water-repellent qualities. Such products are manufactured in accordance with GOST and have several modifications.
• A modern type of product is a product called “Litol-24 LUX” - it is distinguished by a light yellow color and excellent water resistance, it comes in various packaging packages of 25, 10, 2, 0.8 kg, the approximate cost for 1 kg is about 100 rubles. (the larger the package, the lower the price per kilogram).

• This product is used for gear and articulated gears and for all types of bearings, as well as for lubricating equipment in power tools. Experts recommend treating such a composition with caution, since the lubricant can cause additional heating of the hammer drill. In addition, it is not characterized by long and stable operation; it is also better to refrain from using it in battery units.

Branded lubricants, which are indicated in the instructions for the tool, will be more useful than using Litol, since they are characterized by better water resistance, and therefore more reliably protect the product from corrosion.

Effective operation, safety and long-term use of any equipment depend on high-quality and timely care. Parts exposed heaviest load, require the most attentive attitude towards themselves - like, 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);
• gearbox parts and rotor bearings are replaced.

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 - the minimum dropping temperature is +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 exactly the products specified in the operating instructions. They are indeed present on the Russian market, 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 labeled “MoS2”;
• “NLGI2” - for industrial tools and others operating 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 where to “climb out” in the process of work at the most inopportune moment, but will also “interfere” with the instrument. 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 lubrication. In this case, there is a high probability poor quality work gearbox and tool as a whole. A characteristic “bad” noise is detected, indicating high voltage on the tool and 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.

Welcome to another article on the site! Today we will talk about how to lubricate the gearbox of an angle grinder (angle grinding machine), as well as how and when this is done.

When using this tool, any user sooner or later faces this issue. Of course, there are also unresponsible people who don’t take care of their equipment at all. And they end up failing earlier than expected.

To avoid this, you need to follow certain simple procedures. For angle grinders, the main maintenance action is replacing the lubricant in the gearbox. Yes, it is a replacement, not a simple addition. I'll explain why below.

When do you need to change the lubricant in the gearbox of an angle grinder?

So, you disconnected the gearbox and looked inside. What should you see there to understand that it is time to make a replacement?

During operation, lubricant scatters along the walls of the gearbox housing. As a result, over time it begins to dry out, forming lumps. If you notice this, it means it's time to change it.

It should also be taken into account that the lubricant may overheat during operation, causing it to become liquid, as a result of which it simply leaks. For this reason, it becomes small and this is also noticeable. If it does not lie on the gears in a fairly thick layer, it means there is not enough of it.

So, we conclude - we carry out replacement if there is dried lubricant or if there is a small amount of it.

What lubricant should I use for the grinder gearbox?

The best option would be to use special lubricants for gearboxes that come under the same brand as the tool itself. For example, if the grinder is called AEG, then the lubricant should be taken under the same name.

Using such products, you will maximize the service life of your angle grinder, since each manufacturer produces lubricants taking into account all the features of their equipment.

However, the price for such branded items can be quite high, which is why many do not want to shell out for it. Besides, a large number of people use inexpensive Chinese tools, whose manufacturers have not bothered with the issue of having their own lubricating products. Nevertheless, even such equipment must be maintained. And what to do in these cases?

Here we can advise you to buy any inexpensive, unbranded product designed specifically for gearboxes. In addition, it is quite possible to get by with lubricant for the CV joint (this is a hinge on front-wheel drive cars that operates under heavy loads). It can be easily found at any auto parts store. However, I note that this option will certainly be worse than using branded products.

The most unfavorable options would be solid oil and lithol, since they are not designed to work at high temperatures and excessive friction. Although some people use them, dooming their machine to rapid failure. Trying to get immediate benefits, such users end up spending much more money.

How to lubricate the gearbox of an angle grinder?

Now, knowing what and when to lubricate, you need to find out how it’s done. The main rules here mean that there should be enough lubricant to prevent unnecessary friction, but not too much so that it does not leak out.

However, first you need to get rid of the old grease. To do this, you can use kerosene or a mixture of the latter with gasoline. Any liquid used to flush a car engine is also suitable. All parts of the gearbox should be thoroughly washed so that they are completely clean. Only after this can you begin new lubrication.

The required amount of new lubricant can be determined by eye - it should be slightly less than half of the internal space gearbox When you squeeze it out required quantity, spread it over all rubbing parts. After this, you need to assemble the angle grinder, turn it on and let it run for a short time at idle speed.

If lubricant leaks out of the cracks, there is too much of it. You'll have to take everything apart again and remove the excess.

If there is not enough lubrication, the gearbox makes some rattling noise. In this case, be sure to make a supplement.

That's all! These are the rules for selecting and applying lubricant to the gearbox of an angle grinder. I hope you found this text useful. See you again!