Grease for reducer metabo angle grinder

angle grinder Metabo

angle grinder Metabo. productive, efficient and highly reliable professional grade angle grinders designed for efficient work under heavy loads.

Today, Metabo is one of the world leaders in the production of angle grinders and supplies its angle grinders to enterprises and craftsmen working in various sectors of the economy. from small workshops and private craftsmen to large industrial enterprises and construction companies. The Metabo angle grinder can be found on the Mayrea shipyards in Germany, on the construction of famous skyscrapers and islands in the United Arab Emirates, on construction sites in the USA, Canada, Russia, Ukraine and other countries of the world.

What makes the Metabo angle grinder so popular?

First and foremost, legendary reliability. Equipped with a Metabo Marathon motor, large air intakes, a well-thought-out ventilation system and an excellent, reliable and durable gearbox, the Metabo angle grinder shows exceptional survivability under any load. It should be separately noted the high quality of steel from which the gears of the reducer are made.

Safety is a very important factor when working with angle grinders. Realizing this, Metabo engineers pay particular attention to safety systems when developing an angle grinder. As a result, the Metabo angle grinder is equipped with safety systems such as the Metabo S-Automatic mechanical or electronic release clutch, soft start and starting current limitation, Metabo QuickProtect switch and Metabo ProtectSafe system.

It should be noted separately and the anti-vibration system, which not only ensures comfortable work during long-term operation, but also significantly increases the safety of working with the tool. The anti-vibration handle Metabo VibraTech, the system of automatic balancing of the Metabo Autobalance disc are responsible for reducing the vibration load on the user. Metabo two-hand angle grinders are equipped with a shock absorption system that is installed in the rear handle.

No matter which Metabo angle grinder you choose. a compact, lightweight one-handed machine for cutting metal profiles, roughing and sanding, deburring weld seams and trimming tiles, or the heavy Metabo two-handed angle grinder for complex metal work, concrete work, cutting solid materials and sanding hard materials, you can be sure of the high quality, reliability and safety of your tool.

angle grinder Metabo. the best choice of professionals.

How to properly remove old grease in an angle grinder

Old grease is always removed completely, regardless of its color. There should be no traces of old grease on the parts, and there should be particles of destroyed parts in the cavities of the body.

To remove old grease, you can use various flushing fluids used by motorists to wash the engine and its parts. At home, it is recommended to use kerosene or a solution of kerosene and gasoline.

All parts and their cavities must be thoroughly washed and dried.

Correct grease filling process in angle grinders

Packing grease into the units of an angle grinder has its own rules. You need to know not only the order of its application, but also how much, and where to lay it.

How much grease should be used when replacing the gearbox angle grinder

If the amount of grease in the bearings is controlled by flowing out from the back, then a certain amount of grease is packed into the gearbox of the angle grinder. Excess grease will leak out during operation. And a small amount of it will not ensure high-quality operation of the gearbox.

Leave as much lubricant in the gearbox as needed to cover the gear teeth.

Apply enough grease as a guide so that it occupies slightly less than half the volume of the gearbox cavity.

grease, reducer, metabo, angle, grinder

Lubricants of domestic manufacturers for bearings and gearboxes angle grinder

With the rise in for foreign lubricants, the lubricants of domestic manufacturers are especially in demand.

Russian lubricant manufacturers have learned to produce high-quality lubricants suitable for any tool.

Lubricants have been developed for gearboxes of grinders, perforators, drills.

The most popular products are Nanotech Metal Plak Electra. The range of lubricants produced by this company allows you to select the lubricant required for each unit

Lubricants recommended by foreign tool manufacturers

Foreign tool manufacturers, including the angle grinder, recommend specially formulated ointments as lubricants for the angle grinder.

One of the most widespread foreign lubricants is a grease marked MoS2 NLGI 2 ISOL-XBCHB 2 DIN 51825-KPF 2 K-20.

  • MoS2. indicates the filler material, in this case molybdenum;
  • NLGI2. indicates the second viscosity grade;
  • ISOL-XBCHB 2. belonging to ISO standards;
  • DIN 51825-KPF 2 K-20. the grease is made according to German DIN standards;
  • The numbers 51825 mean that the grease is type K.

Lubricants produced with such characteristics are quite expensive. There are imported, less expensive lubricants on the Russian market.

Each tool manufacturer, be it Bosch, Makita, Hitachi, DeWalt, Metabo, RedVerg, Interskol, E256, LEPSE, recommends its own lubricants. This is the manufacturer’s policy. They insist that when performing maintenance, the lubricants specified in the instructions are used. over, non-observance of these recommendations does not allow performing warranty repairs.

Gearbox grease for the Makita angle grinder is available in tubes. Its high cost is commensurate with the high quality and long service life.

Angle grinder regrease

Do-it-yourself angle grinder grease for gearbox

Although the listed lubricants of domestic production are affordable, they are not always at hand.

Is it possible to make a lubricant for the gearbox of an angle grinder with your own hands?

And there is an affirmative answer to this question.

Since the main technical characteristics of lubricants for gearboxes of an angle grinder are presented above, they can be taken as the basis for drawing up a lubricant of the desired characteristics with your own hands.

Homemade gear grease should be based on a highly adhesive grease. It must adhere firmly to the touching parts.

Grease for CV joints has increased adhesion. SHRUS is a joint in a front-wheel drive vehicle that works in conditions of increased dirtiness, shock loads, temperature fluctuations and humidity.

Taking grease for CV joints as a basis, it is necessary to add liquid grease (MS-20) to give the mass the desired consistency. Oil MC-20 must be served dropwise, thoroughly kneading the mass using a homemade mixer.

Good results are obtained by a mixture of a mixture of Tsiatim-221 and TAD-17 lubricants, where Tsiatim is the basis.

Main Features of Lubricant for Angle Grinder

In angle grinders, the main unit that is subjected to the greatest loads during operation is a gearbox consisting of helical gears.

The torque generated by the angle grinder rotor is transmitted from the rotor to the working tool through the small helical gear to the large helical gear. Correctly selected gear lubricant significantly reduces frictional force and heating temperature.

How to Re-Grease your grinder. Evan’s detailing and polishing

The grinder uses bearings that also require periodic lubrication. This is especially true for the spindle bearing of the large helical gear.

A lubricant is suitable that meets not only the listed requirements, but also environmentally friendly.

Lubricants for an angle grinder must have certain characteristics and must be of the required consistency in terms of properties.

The lubricant for the gearbox of the angle grinder must have:

  • viscosity no more than 800 Pa s;
  • dropping point not less than 120 ° С;
  • ultimate strength not less than 120 Pa.

Lubricant for an angle grinder should not have mechanical impurities, be resistant to corrosion, adhere firmly to lubricated parts, not melt at high temperatures, prevent the formation of scoring at the contact points of parts and, of course, have water-repellent properties.

In an angle grinder of any company, two types of plain bearings are used: bearings for an electric motor and support bearings for a gearbox.

The selection of grease for the bearings of an electric motor is different from the selection of grease for the gearbox bearing. It’s all about different working conditions.

Bearing Grease Angle Grinder

Three bearings are installed in the design of the angle grinder. Two bearings are mounted on the rotor of the tool, one bearing is mounted on the shaft of the driven helical gear of a larger diameter.

The angle grinder uses bearings already filled with grease. But from improper operation, overheating of the tool, grease flows out.

How to Choose the Right Bearing Grease Angle Grinder?

Bearing grease must meet the following requirements:

  • increase sliding;
  • reduce friction between component parts of parts;
  • evenly distribute heat and act as a coolant;
  • prevent the occurrence of corrosion;
  • protect from dirt and dust getting inside;
  • work in the required temperature range up to 150C;

The operating conditions of the electric motor bearings differ from the operating conditions of the gearbox bearing, not only because of the temperature requirements, but also because of the operating modes, load modes, frequency and speed of rotation.

The grease for the bearings of the electric motor must have protective properties that prevent the ingress of dirt, dust and moisture on the bearing parts.

The Russian market offers a wide range of foreign greases designed for bearings operating in different conditions. But their cost makes us look for cheaper, not inferior in quality, domestic lubricants.

Among domestic lubricants, we recommend paying attention to the Tsiatim-221, VNIINP-246 (GOST 18852-73), VNIINP-235 lubricants.

Well proven lithium greases.

Possessing high water-repellent properties, they have a wide temperature range. The role of the thickener in them is played by organic and inorganic substances. For sealed bearings, it is best to use CIATIM-203, VNIINP-242 greases.

Among pigment greases for electric motor bearings, blue grease VNIIMP-246 and dark purple ointment VNIINP-235 have become widespread. The first grease is less common than the second one due to its high price.

Read more:  How to Dress a Disc on an Angle Grinder

In today’s Russian market, domestic manufacturers of lubricants are represented in a wide range of products.

How much grease should be used when replacing the gearbox angle grinder

If the amount of grease in the bearings is controlled by flowing out from the back, then a certain amount of grease is packed into the gearbox of the angle grinder. Excess grease will leak out during operation. And a small amount of it will not ensure high-quality operation of the gearbox.

Leave as much lubricant in the gearbox as needed to cover the gear teeth.

Apply enough grease as a guide so that it occupies slightly less than half the volume of the gearbox cavity.

How to properly remove old grease in an angle grinder

Old grease is always removed completely, regardless of its color. There should be no traces of old grease on the parts, and there should be particles of destroyed parts in the cavities of the body.

To remove old grease, you can use various flushing fluids used by motorists to wash the engine and its parts. At home, it is recommended to use kerosene or a solution of kerosene and gasoline.

All parts and their cavities must be thoroughly washed and dried.

Gearbox grease angle grinder

The grease for the gearbox of the angle grinder differs from the grease for the bearings in the main feature. increased adhesion. It should firmly adhere to the gearbox teeth when it rotates a lot.

In general, the lubrication process of the gearbox in angle grinders occurs due to the fine spray of the lubricant and its suspensions. The gearbox operates as if in oil mist. Therefore, the lubrication requirements for gearboxes are slightly different.

In addition to increased adhesion, gear lubricants must be highly heat resistant and not melt at elevated temperatures.

The procedure for applying grease to the gearbox angle grinder

The new grease is thoroughly mixed before application and applied in a thin layer. The bearings are lubricated by packing. If the grease is in a plastic tube, then the neck of the tube is pressed against the side bearing cage and squeezed out until it flows out of the back.

Lubricants recommended by foreign tool manufacturers

Foreign tool manufacturers, including the angle grinder, recommend specially formulated ointments as lubricants for the angle grinder.

One of the most widespread foreign lubricants is a grease marked MoS2 NLGI 2 ISOL-XBCHB 2 DIN 51825-KPF 2 K-20.

  • MoS2. indicates the filler material, in this case molybdenum;
  • NLGI2. indicates the second viscosity grade;
  • ISOL-XBCHB 2. belonging to ISO standards;
  • DIN 51825-KPF 2 K-20. the grease is made according to German DIN standards;
  • The numbers 51825 mean that the grease is type K.

Lubricants produced with such characteristics are quite expensive. There are imported, less expensive lubricants on the Russian market.

Each tool manufacturer, be it Bosch, Makita, Hitachi, DeWalt, Metabo, RedVerg, Interskol, E256, LEPSE, recommends its own lubricants. This is the manufacturer’s policy. They insist that when performing maintenance, the lubricants specified in the instructions are used. over, non-observance of these recommendations does not allow performing warranty repairs.

Gearbox grease for the Makita angle grinder is available in tubes. Its high cost is commensurate with the high quality and long service life.

Do-it-yourself angle grinder grease for gearbox

Although the listed lubricants of domestic production are affordable, they are not always at hand.

Is it possible to make a lubricant for the gearbox of an angle grinder with your own hands?

And there is an affirmative answer to this question.

Since the main technical characteristics of lubricants for gearboxes of an angle grinder are presented above, they can be taken as the basis for drawing up a lubricant of the desired characteristics with your own hands.

Homemade gear grease should be based on a highly adhesive grease. It must adhere firmly to the touching parts.

Grease for CV joints has increased adhesion. SHRUS is a joint in a front-wheel drive vehicle that works in conditions of increased dirtiness, shock loads, temperature fluctuations and humidity.

Taking grease for CV joints as a basis, it is necessary to add liquid grease (MS-20) to give the mass the desired consistency. Oil MC-20 must be served dropwise, thoroughly kneading the mass using a homemade mixer.

Good results are obtained by a mixture of a mixture of Tsiatim-221 and TAD-17 lubricants, where Tsiatim is the basis.

Choosing a lubricant for an angle grinder or the better to lubricate the gearbox

Angle grinders (angle grinder), popularly called angle grinders, are widespread among lovers of tinkering. With their help, the home craftsman can not only perform grinding work, but also cut metal, plastic, stone. Angle grinders are produced by various manufacturers, including domestic.

The angle grinder is a reliable tool that can work, with proper operation and timely replacement of lubricants and carbon brushes, for a long time.

Correctly selected angle grinder lubricant not only extends tool life, but also improves performance.

Knowing the rules for choosing a lubricant for an angle grinder or making it with your own hands, you can perform maintenance without contacting service.

Correct grease filling process in angle grinders

Packing grease into the units of an angle grinder has its own rules. You need to know not only the order of its application, but also how much, and where to lay it.

Features of the

Manufacturers of angle grinders, rotary hammers, drills and other electrical engineering, creating a mechanism with moving parts that rub against each other, apply a special mass to them. Their internal composition may differ from each other. Therefore, when thinking about how to process the mechanism, you need to look at the operating instructions for this power tool. It may say what exactly needs to be applied to gears and other parts.

As you know, such tools work under heavy loads, because of this, the mechanism can get very hot. These substances prevent equipment from failing prematurely. The components that make up the lubricant reject heat from the rubbing elements. They can also prevent the metal from rusting. With the help of these products, you can increase the work of equipment for a long time.

The main working link of the angle grinder is the gearbox. It is a part consisting of gears. The rotor provides rotation of the tool. In this case, the small gear transmits the torque to the large gear.

This liquid in this place is designed to reduce the force that occurs during friction, as well as to reduce the heating temperature. In addition to gears, it is desirable to process bearings.

This mixture must be of high quality in the environmental sense, and also meet three main criteria: viscosity not more than 800, strength threshold not less than 120, heating temperature not less than 120.

The mixtures used must be free from mechanical impurities, resist corrosion, adhere firmly to parts, repel water and any moisture, and must not melt when the temperature rises. The motor and gearbox have different bearings. Because of this, the lubricant for them is also different. After all, the working conditions are different.

Brand manufacturers of angle grinders are also involved in the production of the mass with which their products are processed. It is very comfortable. Indeed, complete with the tool, you can immediately purchase quality products for its care. The manufacturer guarantees the quality of the product. All the necessary characteristics of lubricating mixtures are thought out and correctly selected.

Some manufacturers reinsured themselves and foresaw the moment that the buyer can choose not a branded lubricant, but a cheaper product and under a different name. In such a case, the manufacturers do not give a guarantee, and in the event of a breakdown, repairs will not be made.

Many users consider branded products to be expensive and prefer car products. At first glance, there will be no changes in the work. But experts note that after a certain time, this leads to wear of parts and you will have to pay not for lubrication, but for new parts for the tool.

It is better to initially pay a little more for a good lubricant than to pay much more money for tool repairs later.

How to use?

They apply grease to the nodes for a reason. It is necessary to correctly determine where to apply it, in what order to do it, as well as how much lubricant mixture is needed. There is a maintenance plan for the angle grinder. It clearly states when to change the lubricant. This is usually done if parts break or fail.

Old grease can be identified by its appearance, it has a dirty dark color. This is caused by particles of dust, metal that get into the lubricant during the work. The outdated mix is ​​usually changed. At the same time, no traces of old lubricant should remain on the parts. And if the reason was a breakdown of the part, then you need to carefully remove all the destroyed particles that could remain in the sections of the case.

Rinsing fluids are often used to remove grease. These include often used engine cleaning mixtures. If this is not at hand, then you can always use kerosene or gasoline. After processing, it is advisable to dry the parts well. After cleaning, the process of applying grease is started. Its layer must remain thin.

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The bearings should be lubricated as if stuffing. Lubricants are simply squeezed out of the tube until they flow from the opposite side. Everyone is interested in how much lubricant should be. When applied to bearings, the amount of grease is controlled by the outflow.

But with the gearbox, the situation is different. There are certain norms for him. After all, if you overdo it with lubricants, they will leak out during operation. But an insufficient amount will not bring good results when working with your equipment.

An amount of grease is poured into the gearbox, which completely covers the gears. It is very easy to control the correctness of the application. To do this, you just need to turn on the assembled angle grinder for a short period of time. If in a couple of minutes the gearbox became hot, a leaky mass appeared, then the quantity was clearly overdone. In this case, you need to reduce its amount. To do this, you just need to disassemble the gearbox and somehow remove excess grease.

But if a loud noise appears when turning on the angle grinder, then the amount of lubrication is insufficient, and this point will also have to be corrected. It may lose its properties with prolonged use of the angle grinder. From time to time you need to check its quality. To do this, open the gearbox cover and inspect the part. If you can see dry or slightly dried areas of the lubricant, this means that you need to replace it.

How to choose a lubricant for a gearbox angle grinder?

  • Features of the
  • Brands and their characteristics
  • Selection Tips
  • Lubrication process and its stages
  • How to use?
  • How to use?

Angle grinder is an uncommon and rare name. You may not immediately understand what it is about. But “angle grinder” is a much more familiar word. Many craftsmen are used to working with an angle grinder. The technique copes well with grinding, cuts metal, plastic and stone products.

Both domestic and foreign models of an angle grinder are presented on the modern market. She, like any tool, requires careful handling and care. If you choose the right tool, you can significantly extend the life of the tool. We will figure out how to do this, as well as what is important to pay attention to.

Selection Tips

Greases for gearboxes and bearings (eg bevel gears) differ in properties. Bearing materials must have increased adhesion. It is necessary that the lubricant firmly adheres to the gear teeth during operation. The gearbox is spray lubricated.

Suspended lubricants form a kind of fog during operation. In addition to adhesion, there must be other qualities. For example, the resistance to high temperatures of the lubricant is important. It should withstand high temperatures without problems and not melt under them.

Brands and their characteristics

For example, one of the most expensive imported ointments has the following characteristics:

  • used for molybdenum;
  • has the second class in viscous properties;
  • retained ISO standards;
  • in the process of developing the grease, the German DIN standards were applied;
  • belongs to type K.

You will have to pay dearly for a lubricant with such characteristics. It is called “Makita”. You can buy it in tubes. The advantage of the high price is the quality and duration of use. Therefore, cheaper lubricants are also presented on the Russian market. High for lubricants from a foreign manufacturer increased interest in domestic products.

Russian liquids are suitable for different types of instruments and are not inferior in quality. Rotary hammers, drills, gearboxes. they all have their own types of lubricants.

Tsiatim-203 is used for closed types of bearings. It is better not to lubricate other bearings.

There are also pigment lubricants, they differ in their color. There is a blue and dark purple VNIINP grease. You will have to pay more for the first option than for the second. Therefore, they buy it less often. Although the product quality is pretty good and well worth the money spent.

Lubrication process and its stages

You can make lubrication with your own hands or do it in special workshops. You should be aware that when processing any instrument, an inappropriate fluid can lead to incorrect operation of that instrument itself. Before applying new grease, the old one must be completely removed. The mechanism must be completely free of old grease.

Instructions on how to lubricate the angle grinder gearbox:

  • disassemble the tool;
  • wash the necessary gearbox parts with gasoline;
  • wait until the gasoline dries up;
  • beat the grease;
  • coat the bearing and gears with grease;
  • assemble the angle grinder in reverse order.

It is not necessary to apply a lot of funds to the parts, it is necessary to lay exactly as much mass as prescribed in the instructions. If you overdo it with the amount, the product will start to flow out when the tool is running. The gearbox will malfunction and function with difficulty. This will lead to its rapid breakdown.

The agent to be applied should be less than half the volume of the gearbox itself.

How to use?

Situations often occur when an angle grinder requires an urgent lubrication change. In this case, the desired mixture may simply not be at hand, and there is no time to go for new lubricant. Here are the craftsmen and figured out how to get out of this situation. Many craftsmen make lubricant mixtures with their own hands. At the same time, they manage to meet all the necessary lubrication requirements.

The choice of lubricants is very diverse. You can choose both cheap and expensive, both domestic and foreign, you can give preference to the grease of the same name (the name is the same as that of the angle grinder) grease. The choice is always up to the owner of the equipment. It is up to him to decide how long the angle grinder will last and how much time he is ready to devote to caring for it.

For information on how to make the lubricant for the gearbox of an angle grinder yourself, see the following video.

Gear Lubricant Requirements Angle Grinder

How to lubricate the gearbox of the angle grinder, the master decides for himself. There is no universal remedy. you need to select your liquid for a specific tool. The correct lubricant must meet a number of requirements, including:

  • be resistant to corrosion;
  • consist of natural ingredients. including so as not to harm the master when inhaling vapors;
  • reduce the frictional force of the gears, and, accordingly, the heating temperature of the tool;
  • the consistency must be thick enough to adhere to the parts, but with a viscosity of no 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 120 ° C;
  • ensure the operation of the tool in the range up to 150 ºС;
  • the presence of metallic impurities in the composition is not allowed;
  • tensile strength not less than 120 Pa;
  • be hydrophobic, have water-repellent properties;
  • protect the “insides” from dirt, dust.

Overview of lubricants for angle grinders

If you lubricate the 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.

Foreign companies recommend to masters how to lubricate an angle grinder, offering specially developed ointments. The manufacturer strongly advises the use of the products specified in the instructions for use. On the Russian market, there are indeed such, but at a fairly high price. In this regard, the question of high-quality lubricants of a domestic manufacturer arises sharply:

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

How to choose a lubricant for a gearbox angle grinder

Effective work, safety and long-term use of any technique depend on high-quality and timely care. The most stressed parts require the utmost attention to themselves. such as the gearbox of an angle grinder.

In the process of using the tool, the structure is exposed to friction, and, accordingly, overheats. Poor-quality lubricant can, having lost the desired consistency, “leak” from the mechanism, which will entail additional stress, mechanical and thermal. Controlling the amount of such funds is also extremely difficult.

The lubricant must be changed if:

  • “lumps”, dry and dried particles are found on the inner walls of the body;
  • the gears of the gearbox are not covered with lubricant in the proper amount;
  • a year has passed since the last replacement (with frequent use of equipment);
  • replacement of gearbox parts, rotor bearings.

Grease change technology

The first step is to completely remove the used lubricant. usually it, due to the presence of impurities of dust and dirt, darkens, becomes cloudy. Next, you should carefully check the tool parts for traces of grease, body cavities. for foreign inclusions, including particles of decayed parts. For more effective cleaning of the angle grinder, it is recommended to use liquids used for washing the motor and its parts. Suitable among this number are kerosene and gasoline.

The new lubricant is filled in before it flows out from the reverse side. usually visually it occupies a little less than half the volume of the gearbox. The masters believe that this is the only way to control the sufficient filling of the material.

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If too much lubricant is put in, it will not only find where to “get out” in the process of work at the most inopportune moment, but will also “interfere” with the tool. Power will decrease, while energy consumption, on the contrary, will increase. However, as a last resort, you can always open the case and remove excess material.

The situation is much more unpleasant with an 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. The characteristic “bad” noise is determined, indicating a high tension of the tool, friction of gears.

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

Gearbox lubrication angle grinder

Surely you will not compare the word “angle grinder” with a citizen of the solar angle grinder, but immediately remember about the angle grinder. which forever secured this name. It is understandable, because this term came into our use back in the 70s, when such a tool was produced exclusively on the territory of an angle grinder.

Since then, the angle grinder has not only not lost its importance, but, on the contrary, has become even more efficient, safer and more durable. Due to its enormous functionality and ability to work with different types of material (metal, concrete, stone, brick, tile, etc.), it has become an integral part of any major overhaul or construction.

However, given the high workload of the tool, in the process of use, inaccuracies in its operation may occur, which can lead to quite unforeseen and unpleasant consequences. Therefore, if you want the device to serve you for a long time to the maximum of its capabilities, you need to approach its maintenance more than seriously.

Of course, the right decision would be to take the equipment to a service center, where it will be diagnosed and repaired by experienced specialists. But this option will be relevant if the warranty period has not yet expired, and if you are not limited in time. For the rest, you have to learn the device and make repairs yourself.

There is a lot of information on the Internet (including a video), where the process of disassembling, cleaning and lubricating the main structural elements of an angle grinder is described in stages. For example, to get to the gearbox, it is not necessary to completely disassemble it; it is enough to unscrew a few screws. And even though this process is relatively simple, it requires strict adherence to instructions, as well as accuracy, precision and care.

Before starting to dismantle the tool, it is necessary to study in detail its internal components.

Angle grinder device consists of:

Main body made of shockproof plastic.
Side handle for comfortable holding of equipment during operation.
Start buttons.
Spindle lock buttons for quick disc changes.
An electric motor, which includes a rotor and a stator.
Reliable gearbox.
Speed ​​control wheels (not for all models).
Super-Joint-System (not available on all models).
Nuts for fixing the working element.
Wide protective cover.
Power cable or battery pack.

Disassembly of the gearbox angle grinder

The angle grinder gearbox is responsible for transmitting the rotary motion from the rotor of the electric motor to the working element. With the optimal rotation speed and the correct selection of the wheel diameter, you get a tool that is tuned for the most productive and efficient work.

The design of the gearbox consists of a bearing, a large and a driven gear. As for the body, in most cases it is made of high-quality aluminum alloy, on the base of which there are several threaded connections for fixing the side handle.

To remove the gear mechanism, one Phillips screwdriver will be enough.

The first thing to do. remove the working disc and the protective cover from the spindle.
Then unscrew the bolts that secure the angle grinder body and the gear mechanism. Typically, it is held to the body by four screws.
Take out the gearbox and assess its internal state.

How to determine if a lubricant change is necessary in a gearbox angle grinder?

Check teeth and gears for damage or wear. If you notice excess grease, which, under the influence of centrifugal force, completely settled on the walls of the housing, then with its normal quality, you can reapply a thick layer to the gear teeth. If the oil is outdated, then it should be completely replaced. To do this, thoroughly flush the gearbox with kerosene or another volatile solvent.

It is also worth considering the fact that in the process of intensive work, the lubricant can overheat, which will lead to its increased evaporation and, consequently, deterioration of the equipment operation. For example, if you notice an increased noise emanating from the device, then surely there is not enough oil in the gearbox and it is necessary to relubricate.

How much grease to use

The amount of lubricant can be easily determined by eye. It should be slightly less than half of the total volume of the gearbox. After you have squeezed out the necessary part of the composition, spread it over all rubbing surfaces of the parts.

What is the best lubricant to use

According to experts, it is best to use a lubricant of the same brand as the tool. For example, if you use TM Makita equipment in your work, then the lubricant should also be from this manufacturer, since its production takes into account the characteristics of your equipment. Thus, you can protect the device from premature failure, maximizing its service life.

However, there is a significant disadvantage in this. the price of branded formulations is quite high, which is why many people refrain from buying, preferring cheaper materials.

In addition, a large number of craftsmen use inexpensive Chinese equipment in their work, for which lubrication is not provided. However, it, like all electrical equipment, requires periodic maintenance.

What we would strongly advise you not to use is lithol or solidol. Since they are not designed to work in conditions of strong friction and high temperatures. The use of such materials leads to premature wear of the equipment and, consequently, to its breakdown.

How often to lubricate

If the tool is used intensively, then its prevention is recommended to be done every year. Since the gearbox is a rather complex mechanism that has to withstand regular heavy loads, dust can form in its internal component. With timely and correct lubrication, you will provide your device with guaranteed stable operation and a long service life.

Gearbox lubrication angle grinder (angle grinder), polisher, lawn mowers

Angle grinder reducer. high speed transmission requiring maintenance. To clarify this process, we took a new Interskol polishing machine. Due to the ratio of price and characteristics, it has earned popularity among amateurs. The spindle spins up to 2200 rpm. Just imagine, the gearbox rotates at a speed of 830 m / s, and the grease is scattered along the walls of the casing. It is logical that an unsuitable, thick grease will not return to the friction zone.

Getting started service

Remove the 4 screws holding the platform with the main gear and spindle.

Carefully remove the assembly, holding the spindle. Teeth are dry as expected.

Let’s clean out the remnants of the factory grease. A metal spatula works best.

The factory grease is too thick and not suitable for high speed operation. The machine would not have worked for a long time.

We will collect the remains with rags. It is important to avoid mixing lubricants.

Clean the gears with a brush moistened with gasoline or thinner.

Just in case, let’s go over the main gear again.

It is strictly forbidden to lubricate the assembly with greases with impurities. solid particles can jam the needle bearing.

For maintenance, we use a specialized grease VMPAUTO ULTRA-0, semi-fluid, in a stick package of 50 g is enough for two greases.

Or in a 200 ml tube.

Carefully fill each bearing.

Also, gear and casing cavities.

Let’s assemble the car in the reverse order.

And admire the result.

Your tool will last a long time if you choose the right accessories. Buy MC ULTRA.

How professionals do it, see Igor Negoda’s video: