How to properly lubricate the gearbox angle grinder

What to grease the gearbox of an angle grinder angle grinder

Earlier mentioned that, there are many kinds of lubricants from both foreign and domestic manufacturer. A good lubricant for gears of power tools is produced by Bosh. It is called “Gear Lubricant” and packed in tubes of 65 grams. One such tube is enough for several services of angle grinder.

Gear lubricant for angle grinder of different brands

Of the greases intended for the gearbox of angle grinder, produced by domestic manufacturers, we can recommend products of the company “Nanotek”. It is called “Nanotech MetalPlak Elektra” and is designed for tools that work with heavy loads. And also from the domestic greases are widely used SchRUS or Tsiatim-221, but they require prior preparation and, in fact, are homemade lubricant.

Foreign lubricants

To determine what you can lubricate the gearbox of an angle grinder, it is necessary to consider a number of expert recommendations. They argue that you should choose an oil that is produced by the manufacturer of the equipment. Such compounds are not cheap. However, they have a balanced set of additives that provide long-lasting performance of the angle grinder. If the user of the equipment acquires for maintenance of the power tool other lubricants, the equipment may not even be covered by the warranty.

However, if desired, you can replace the compositions recommended by the manufacturer with similar means. For foreign models of angle grinder is quite suitable means, which include additives, identical to those used by the company-manufacturer of the angle grinder.

If there is molybdenum in the grease, it is necessary to buy the grease marked MoS2. NLGI2 composition is suitable for chainsaws that are serviced with consumables of the second viscosity class. Lubricants marked ISOL-XBCHB 2 meet ISO standards. If the tool was made according to the German DIN quality standards, the new oil must contain in the marking the indication DIN 51825-KPF 2 K-20.

Domestic greases

Considering, what to oil the gear reducer of angle grinder of domestic production, it is necessary to pay attention to locally produced compounds. Today Russian companies offer a wide choice of such products

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

Particularly popular are the means of the company “Nanotech Metal Plak Elektra”. However, there are other varieties of maintenance compositions for any angle grinder assembly, including the gearbox.

Homemade mixes

Situations where there is an urgent need to lubricate the elements of the angle grinder, are not uncommon. And yet, as luck would have it, there is no way to get a suitable lubricant for this purpose. Then the owner can try to make a remedy with their own hands from available materials.

To obtain required level of adhesion, automotive CV joint grease is used as a base. In addition to its excellent penetrating properties, it is allowed for use in conditions:

  • For high loads;
  • high humidity;
  • temperature fluctuations in a wide range;
  • Significant heating;
  • the impact of solid contaminants;. the impact of solid contaminants on the grinding machine.

To liquefy the material and obtain a suitable consistency for the reducer, it is recommended to add MS-20 oil. The liquid is introduced into the base gradually, preferably in drops, while constantly stirring the resulting composition with a mixer.

No less effective is the use of homemade material based on “Citiam-221” with the addition of TAD-17.

The role of grease and its characteristics

A distinctive feature of the angle grinder is the reducer, which consists of gears with a helical structure. This component is subject to considerable loads and wear more than any other. The rotor of the angle grinder generates a torque that travels from the small bevel gear to its large counterpart. The last gear has a shaft on which the working tool (cutter, emery wheel, brush) is attached.

When the gears rub against each other as they move, the temperature rises. And this leads to weakening of the metal and faster wear. To prevent negative consequences, special compounds are introduced into the rubbing nodes, which significantly reduce deformation and do not allow the parts to heat up intensively.

Lubricant for power tool gearboxes must have the following parameters:

How To Greasing Bevel Gear on Grinder Machine

  • Its viscosity must be no higher than 800 units.
  • the tensile strength exceeds 120 pascal.
  • The composition must be in the refractory category (above 100°C).
  • have water-repellent properties;
  • Hold firmly on the parts;
  • Not to cause corrosive processes;
  • be free of mechanical additives.
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But in addition to the gearbox, the angle grinder has two types of bearings that also need lubrication. One of them helps the electric motor. The other serves as a support for the spindle of the big gear in the gearbox. These bearings operate under different conditions and require different oil formulations.

homemade gear lubricant for angle grinders

Where does the common belief that modern lubricants are not very good, even unsuccessful come from?? Who says that the gear lubricants for hand power tools produced by dozens of enterprises and research-and-production associations are of such a low quality that you should immediately invent and make a new lubricant yourself? ?

Harbor Freight Drill Master Angle Grinder Gearbox Grease Replacement

In the videos posted on the pages of some websites, experts of unknown qualification question the quality of existing lubricants for bevel gears of spur, helical and hypoid gearing used in the construction of angle grinders. Having scolded, for example, Bosch VP729 grease, the specialist cooks his miracle-working composition with incredible properties right in front of your eyes.

The entire technical arsenal of his research laboratory is used: the workbench in the garage, plastic and tin cans, a wooden popsicle stick. The recipe is simple and accessible to every gullible user. It is suggested to take some kind of grease and make it “thicker” by mixing it with some oil.

The components. ready-made materials produced by industry. Mixing equipment. a can and a stick. Stability of the required temperature is ensured by the candle. The product quality is evaluated by organoleptic methods. There are no test benches because of the lack of testing.

properly, lubricate, gearbox, angle

Brief description of the process: Industrial oil I-20 is added drop by drop to the plastic CYATIM-221. With continuous stirring using a stick. CYATIM-221 is a silicon-organic based silicone oil with a complex calcium thickener. I-20 oil is a petroleum derivative with a mineral base. Mix more thoroughly to get a stable compound of polymer and inorganic matter. If you succeed, you will not only have a homemade grease for angle grinder, but also an international prize in chemistry.

However, there are clips of a slightly different nature on the web. “When the question arose about how to lubricate an angle grinder, I remembered that in the garage I have an iron can left over from my father.”. A jar is demonstrated. “It says on it: Lubricant 158.”. Close-up inscription. “I greased the gearbox with this grease”. What follows are pictures of the lubrication, and footage of the tests. “Now my angle grinder works like this”. Indeed, the angle grinder works quietly, evenly, the spindle speed drops smoothly after switching off, the machine stops almost silently.

Note: he didn’t invent anything, he didn’t mix anything, he applied a ready-made remedy, perhaps an analogue. He is not giving advice, but sharing his experience

Angle grinder gearbox lubrication

Angle grinder working under extreme conditions and high loads. Because of this, the periodic lubrication of the gearbox of an angle grinder is required, as the moving units of power tools make high demands on lubrication. Otherwise, if there is a shortage of lubricant, there is increased wear and shortens the life of the power tool.

The gearbox of an angle grinder is designed in such a way that the grease in the gear train is forced by centrifugal force onto the housing walls. Increased noise during operation of the angle grinder is a sign of “drying out” of the gearbox. The problem becomes evident upon opening the gear case. All factory grease is on the housing walls, helical gears are practically dry.

Check the degree of wear on the gear pair, and the damage to the teeth. Replace gears if necessary.

Clean gears surface from mechanical dust. Lubricate the closed bearings of the motor rotor and gearbox shaft with liquid motor oil. Scroll the rotor vigorously to evenly penetrate the grease inside the bearing. Remove excessive amounts of liquid lubricant with a clean rag. If this is not done, it will mix with the gear grease and make it more fluid. Liquid grease will not adhere well to the gear teeth.

If the oil in the gearbox is of normal quality, apply it as thickly as possible to the teeth of both gears. If there are signs of aging grease. flush the gearbox with kerosene or other penetrating fluid, and replace the grease.

If you think about how to grease the gear reducer of the angle grinder, you can use any high-temperature grease, for example, for greasing axle gears and wheel bearings of cars. At the same time don’t forget to apply it to the shaft support bearing.

Reassemble the gearbox and carefully tighten the fasteners. Leaving play in the pinion can cause the gearbox to seize.

Also, when servicing the angle grinder, lubricate the second rotor bearing and check the condition of the motor brushes.

Depending on the intensity of use, this procedure (lubricating the gearbox of the angle grinder and checking the condition of the moving parts) must be performed regularly. This will extend the life of your power tool.

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Angle grinder works in extreme conditions and under heavy load. For this reason, periodic lubrication of the gearbox of an angle grinder is required, because the moving units of power tools make high demands on the lubricant. Otherwise wear and tear occurs and the service life of the power tool is reduced in the event of a lubricant shortage.

Gearbox of angle grinder is designed in such a way that grease of gear pair under the action of centrifugal force moves to the walls of the housing. A sign of “drying out” of the gearbox is increased noise during operation of the angle grinder. Opening the gearbox casing reveals the problem. All of the factory grease is on the housing walls and the helical gears are nearly dry.

Check the degree of wear on the gears and damage to the teeth. If necessary, replace gears.

Clean gears surface from mechanical dust. Lubricate the closed bearings of the motor rotor and gearbox shaft with motor oil. Spin rotor vigorously to penetrate grease evenly into bearing. Remove excess liquid lubricant with a clean rag. If this is not done, it will mix with the gear grease and make it more fluid. The liquid grease will not adhere well to the gear teeth.

If the factory grease for angle grinder in the gearbox is of normal quality, apply it to the teeth of both gears as thick as possible. If there are signs of grease aging. flush the gearbox with kerosene or other penetrating fluid and replace the grease.

How to grease angle grinder gearbox. any high-temperature grease will do, for example for greasing axle gears and hub bearings of a car. Don’t forget to apply it to the shaft support bearing as well.

Assemble the gearbox, carefully tightening the fasteners. If you leave play in the gear set, the gearbox might jam.

Also, when servicing the angle grinder, lubricate the second rotor bearing and check the condition of the motor brushes.

Depending on the intensity of use, this procedure (lubricating the gearbox of the angle grinder and checking the condition of the moving parts) must be performed regularly. This will extend the life of your power tool.

Fresh concrete mortar fills all the corners of the mold and the voids between the reinforcement very well. It can also grip the formwork just as well, trying to turn.

When developing designs for the living room, anyone who has undertaken to design and perform the work himself, should remember the peculiarities of this.

Information on how to level walls with plaster with your own hands will be useful to everyone: and an experienced finisher, and a novice master. At the same time, the very.

Characteristics and features of grease for bolt cutters

When servicing any hand tool that has moving parts, a lubricant with the following characteristics and features is used:

  • It must be free of abrasive particles that could cause chipping of the moving parts.
  • Temperature at which the lubricant becomes liquid must be above 120 degrees.
  • The oil must not absorb moisture, must form a strong film that protects parts from corrosion.
  • Also, most importantly, the oil must be of such a viscosity that it has the ability to adhere to moving parts.

The consistency or viscosity of lubricating greases is categorized according to NLGI (National Lubricating Grease Institute), whereby in certain cases it is necessary to use oil of a certain thickness. Oil viscosity depends on gearbox speed, the higher the speed, the more fluid the oil must be. So, depending on the tool, you choose the viscosity:

  • Drills, rotary drills, impact drills, jigsaws, where the gearbox is slow. Lubricant with NLGI-2 index, which is soft.
  • Lightweight drills and impact drills. NLGI-1 class, very soft consistency.
  • angle grinder, circular saws, brush cutters. NLGI-0 class, consistency. semi-liquid.
  • Heavy pehorators, demolition hammers. NLGI-00 grade, consistency of liquid.

Recommendations of specialists

Experienced experts give recommendations, what is the best way to lubricate the gearbox of an angle grinder. They argue that if it is impossible to serve the tool with branded grease, you can choose another composition. The second most popular in our country is recognized grease for CV joints. It is mostly used for tools of domestic manufacture. Some craftsmen choose a grease for the gear reducer and for foreign angle grinder. But the quality of original compositions will be much higher.

Worse, if the handyman has preferred compositions such as lithol or solidol. These products are universal. They are not able to properly serve the gearbox system of the angle grinder. If they are used, the tool can not work properly. At the beginning of operation the difference will not be noticeable. But over time there can be serious problems with the operation of the machine.

That’s why experienced craftsmen do not recommend cutting corners on gearbox grease. The cost of acquiring the original or other high quality products pays off over a long period of operation of the equipment.

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Review of angle grinder grease

Previously mentioned that, there are many types of lubricants from foreign producers, as well as from domestic. A good lubricant for gears of power tools is produced by Bosh. It is called “Gear Lubricant” and comes in tubes of 65 grams. One such tube is enough for several services of the angle grinder.

Gear lubricant for angle grinders of various brands

Of the greases intended in the gearbox of angle grinder, produced by domestic manufacturers, we can recommend products of “Nanotek” company. It is called NanoTec MetalPlak Elektra and is designed for heavy-duty tools. Also from the domestic greases are widely used SchRUS or Tsiatim-221, but they require preliminary preparation and, in fact, are a homemade lubricant.

Foreign lubricants

To determine what can be used to lubricate the gearbox of an angle grinder, you should consider a number of expert recommendations. They say that you should choose an oil that is produced by the manufacturer of equipment. Such compounds are not cheap. However, they have a balanced set of additives that ensure the long service life of the angle grinder. If the equipment user purchases other lubricants for maintenance of the power tool, the equipment may not even be covered by the warranty.

However, if desired, you can replace the manufacturer’s recommended compositions with similar means. For foreign models of the angle grinder is quite suitable means, which include additives that are identical to those used by the manufacturer of the angle grinder.

If molybdenum was present in the grease, you must buy the compound marked MoS2. NLGI2 composition is suitable for grinders that are serviced by consumables of the second viscosity grade. ISO standard greases are marked ISOL-XBCHB 2. If the product was manufactured according to DIN German quality standards, the new oil must contain in its marking the indication DIN 51825-KPF 2 K-20.

Domestic greases

Considering, what to grease the gear reducer of the angle grinder of domestic production, it is necessary to pay attention to the locally made compositions. Today Russian companies offer a wide range of such products. They are notable for their affordable price.

properly, lubricate, gearbox, angle

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

Particularly popular are the means of the company “Nanotech Metal Plak Electra”. However, there are other varieties of maintenance compositions for any node of the angle grinder, including the gearbox.

homemade mixtures

Situations where there is an urgent need to lubricate the elements of an angle grinder, are not uncommon. And at the same time, as luck would have it, there is no way to get a suitable lubricant for this purpose. Then the owner can try to make means own hands from available materials.

To achieve the desired level of adhesion, a lubricant for CV joints is used as a base. In addition to its excellent penetrating properties, it can also be used for applications involving

  • Significant loads;
  • high humidity;
  • temperature fluctuations in a wide range;
  • considerable heat;
  • exposure to solid contaminants.

Adding oil MS-20 is recommended to liquefy the material and to obtain the desired consistency for the reducer. The liquid is introduced into the base gradually, preferably in drops, while constantly stirring the resulting mixture with a mixer.

No less effective is the use of homemade material based on “Citiam-221” with the addition of TAD-17.

homemade mixes

Situations where there is an urgent need to lubricate the elements of the angle grinder are not uncommon. And at the same time, as if by chance, there is no way to get a suitable lubricant for this purpose. Then the owner can try to make a remedy with his own hands from the materials available.

To ensure the required level of adhesion, a grease for automobile CV joints is taken as the basis. In addition to its excellent penetrating properties, it is allowed to use it for operation in conditions:

  • of significant loads;
  • high humidity;
  • temperature fluctuations in a wide range;
  • Significant heat;
  • The following is less effective using a homemade material based on “Citiam-221” with an additive of TAD-17.

Adding oil MS-20 is recommended to thin the material and obtain the proper consistency for the gearbox. The liquid is added to the base gradually, preferably in drops, while constantly stirring the resulting mixture with a mixer.

No less effective is the use of homemade material based on “Citiam-221” with the addition of TAD-17.

What kind of gear lubricant do you use?? Have you ever made your own lubricant?? Please share your experiences with us.