Build Daily


August 12, 2017 18:08

Choosing a lubricant for grinders or better lubricated gearbox


  • 1 main characteristics of the lubricant for LBM
  • 2 Lubricants recommended by foreign producers tool
  • 3 Lubricants domestic manufacturers for bearings and gears bolgarok
    • 3.1 Bearing greaseLBM
    • 3.2 grease gear LBM
    • 3.3 grease gear grinders with their hands
  • 4 correct process grease packing in angle grinding typewriters
    • 4.1 When changing the grease in the Bulgarian
    • 4.2 How to remove the old grease in Bulgarian
    • 4.3 procedure for applying grease to the gearbox Bulgarian
    • 4.4 need to use How much grease when replacing the gearbox LBM
    • 4.5 Verifying the lubrication in the gearbox LBM
  • 5 Video repair grinders

widespread among amateurs tinkering received angle grinders machine (LBM), known popularly in the Bulgarians.With their help, handyman can not only perform the grinding work, but also to cut metal, plastic, stone.Angle machines produced by different manufacturers, including domestic ones.

Angle machine is a reliable tool that can work with proper

maintenance and timely replacement of grease, carbon brushes for a long time.

properly selected lubricant for Bulgarians not only extends the life of the tool, but also improves performance.

Knowing the rules for choosing a lubricant for Bulgarian or preparing their own hands, you can perform maintenance without contacting customer service.

main characteristics of the lubricant for LBM

The angle grinding typewriters primary node undergoing the greatest stress at work is a gear unit consisting of helical gears.

The torque generated by the rotor grinders, is transmitted from the rotor to the working tool through a small helical gear to a large helical shesterne.Pravilno selected gear lubricant significantly reduces the frictional force, heating temperature.

The grinder used bearings, which also requires periodic lubrication.This applies particularly to the support bearing spindle large spur gear.

Suitable such lubricant that meets not only these requirements, but also environmentally friendly.

Lubricants Angle cars are required to have certain characteristics and should be required consistency in their properties.

grease gear angle grinders must have:

  • viscosity of not more than 800 Pa's;
  • dropping point of not less than + 120 ° C;
  • tensile strength of at least 120 Pa.

grease LBM must not have any mechanical impurities, be corrosion resistant, firmly held on the lubricated parts, not melt at high temperatures to prevent scuffing at the contact parts, have water repellent properties.

The angle grinders every company uses two types of slide bearings: Bearings for motor and gearbox bearings for support.

Selection of lubricant for the motor bearings is different from the selection of lubricants for the gearbox bearing.It's all about the different operating conditions.

Table of lubricants for bearings

Lubricants recommended by foreign producers tool

Foreign manufacturers of tools including angle grinders, are recommended as lubricants for Bulgarians specially designed ointment.

One common foreign grease lubrication is marked MoS2 NLGI 2 ISOL-XBCHB 2 DIN 51825-KPF 2 K-20.

decipher coded:

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

Expensive imported lubricant for gearboxes LBM

lubricants manufactured with such characteristics are quite expensive.In the Russian market there are imported, less expensive lubricants.

Imported lubricant for angle grinders

Each instrument manufacturer, whether Bosch, Makita, Hitachi, DeWalt, Metabo, RedVerg, Interskol, E256, LEPSE recommends its lubricants.It is the manufacturer's policy.They insist that when performing maintenance to apply the grease as specified in the instructions.Moreover, failure to comply with these recommendations does not perform warranty repairs.

grease gear Makita angle grinders comes in tubes.Its high cost is proportional to the high quality and long life.

lubricants for domestic manufacturers of bearings and gears bolgarok

With the rise in prices for foreign lubricants, especially in demand of steel grease domestic producers.

Russian manufacturers of lubricants learned to produce high-quality lubricant, suitable for any tools.

developed lubricants for gearboxes sanders, drills, drills.

The most popular products Nanotech Metal Pluck Electra.Produces a number of lubricants by this company allows you to choose the right lubricant for each node

domestic lubricant

grease LBM

bearings in construction machines Angle set three bearings.Two bearings are mounted on the rotor tools, one bearing is mounted on a shaft driven spur gear of greater diameter.

General view of the Bulgarians in the context of

The LBM used bearings are already filled with grease.But by misuse, overheating tool lubrication follows.

How to choose the right lubricant for the bearings grinder?

Bearing grease must satisfy the following requirements: miniature grease

  • increase the slip;
  • reduce friction between components of the parts;
  • evenly distribute heat and act as a coolant;
  • prevent the occurrence of corrosion;
  • protected against ingress of dirt and dust;
  • operate in the desired temperature range up to + 150C;

conditions of the motor bearings are cast on operating conditions of the gearbox bearing is not only because of the temperature requirements, and modes of operation modes of loads, the frequency and speed of rotation.

Grease the motor bearings should have protective properties that prevent the ingress of dirt, dust, moisture on the bearing components.

the Russian market a wide range of foreign lubricants designed for bearings operating under different conditions.But their cost makes the search for cheaper, are not inferior in quality, domestic lubricants.

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From domestic lubricants recommend pay attention to the lubrication Ciatim-221, VNIINP-246 (GOST 18852-73), VNIINP-235.

Well established lithium grease.

With high water-repellent properties, they have a wide temperature range.The role of thickener therein operate organic and inorganic substances.For closed bearings are best used grease CIATIM-203 VNIINP-242.

From pigment lubricants for motor bearing lubrication widespread blue VNIIMP-246 and dark purple ointment VNIINP-235.First lubrication due to high prices is less common than the latter.

In today's Russian market of domestic producers of lubricants are widely represented.

Domestic bearing grease.

grease gear LBM

grease gear grinder is different from the lubrication of bearing the main feature, enhanced adhesion.It should keep your teeth for a large gear rotates.

general process of the gear grease in the angle grinding typewriters is due to the small spray lubricant and suspensions.The gearbox operates as if in a mist.Therefore, the requirements for the lubricant for gearboxes differ.Furthermore

increased adhesion gear lubricant should have a high heat resistance and rasslavlyatsya at elevated temperatures.

Patriotic gear lubricant for angle grinders

grease gear grinders with their hands

These lubricants domestic production although affordable, but not always at hand.

Is it possible to make grease Angle gear machines with their own hands?

And this question has an affirmative answer.

Since the main specifications of lubricants for gearboxes LBM presented above, they can be taken as a basis for drawing up the required lubricant characteristics of their hands.

basis homemade lubricant for gearboxes should be grease, having high adhesion.It must hold fast to the adjoining parts.

improve adhesion has grease for CV joints.CV joint is a hinge in the front-wheel car, working in conditions of increased pollution, shock loads, temperature fluctuations and humidity.

Taking the grease for constant velocity joints, it is necessary to add a liquid lubricant (MS-20) to give the weight of the desired consistency.MS-20 oil should be fed drop by drop, carefully vymeshivaya mass by means of a self-made mixer.

Good results are obtained mixture is a mixture of grease Ciatim-221 and TAD-17, where the foundation is Ciatim.

Grease for gear grinders with their hands

Proper lubrication process of packing in angle grinding typewriters

packing lubrication units Angle machine has its own rules.It is necessary to know not only the procedure for its application, but also how and where to lay her.

When changing the grease in the Bulgarian

lubrication grinder varies according to plan maintenance tool, the replacement of defective parts or gear rotor bearings.

old grease is dirty dark color.This is due to the ingress of foreign particles into it or metal dust.

How to remove the old grease in Bulgarian

old grease is always completely removed regardless of its color.For details should not be traces of old grease and particles in the cavities of the body parts destroyed.

To remove the old grease can be used a variety of wash-off liquid, used by motorists to wash the engine and its components.At home, it is recommended to use a kerosene or kerosene and gasoline solution.

All parts and cavities should be thoroughly washed and dried.

procedure for applying grease to the gearbox Bulgarian

new grease before application thoroughly mixed and applied in a thin layer.The bearings are grease is applied by printing.If grease in a plastic tube, the neck of the tube put to the side bearing cage and squeezed to leak from the back side.

How much grease should be used when replacing the gearbox LBM

If the amount of lubricant in the bearings is controlled by streaming it from the reverse side, the LBM gearbox stuffed a certain amount of grease.Excess grease will flow in the process.A small amount of it does not provide quality work gear.

in the gearbox should be left as much grease to the teeth of the gears were covered.

To Apply a landmark as the lubricant, so that it takes a little less than half the volume of the cavity of the gearbox.

The consistency of the grease with their hands

Verifying the lubrication in the gearbox LBM

control volume packed with grease in the gearbox is carried out trial inclusion collected grinder briefly in idle mode.

lubrication Norm - less than half the volume

If the gearbox started to warm up, from seals and gaskets appear traces of grease leakage, the conclusion is clear.You moved the grease.Open the gear case and remove excess grease.All excess lubricant will be placed on the covers of the gearbox housing.Lack of lubrication in the gearbox is determined by the high noise reducer operation.

With prolonged use angle grinders lubrication in the gearbox housing is allocated on the walls and on the external impact of losing its properties.

Opening the cover gear, carefully inspect the condition of the lubricant, gear tooth profile.If you know how to check the gears the contact patch.

presence of particles of dry or dried in the field or on the gear case lubricant suggests that the changing of the grease it.

Video repair grinders