How to lubricate the makita rotary hammer reducer

How and with what to lubricate the gearbox and the chuck of the perforator?

Welcome to my site! This article will focus on lubricating a rock drill. The operation of this tool requires more than simple care. Be sure to periodically lubricate the gearbox and chuck.

In this case, the gearbox, of course, comes already lubricated from the factory. But over time, the lubricant leaks somewhere, dries somewhere. In addition, it is only intended to reduce friction, not to eliminate it. Therefore, one way or another, and the parts still rub against each other, due to which fine metal dust is gradually formed, which remains in the lubricant.

As a result of this mixing of metal and lubricant, the properties of the latter are gradually lost and wear of parts is accelerated.

Inexpensive Chinese rock drills can be poorly lubricated at the factory. Experienced masters of service centers recommend that after buying even a new such device, immediately disassemble and grease it.

The cartridge is dry from the factory. Here, in fact, not the cartridge itself is completely smeared, but only that place of it that comes into contact with the drill, since it is in it that strong friction occurs, without reducing which both the cartridge itself and the drill shank can be damaged.

So, below we will consider how and how to lubricate these elements. The SDS rotary hammer with a horizontal engine will be considered, since it is it that is used by home craftsmen in the overwhelming majority of cases, and the article is mainly written for them.

Drill lubricant

Everything is exactly the same here. Special greases for this purpose are called. for drills. And they are also usually produced by the same firms that make rotary hammers.

In the absence of a special lubricant, you can use graphite. But it does not remove heat from the shank so well, and this is important, since sometimes during prolonged operation the shank sometimes flattens, which is why it is difficult to extract it later.

Installation of electric brushes

Remove dirt from the grooves of the brush holder and reinstall the brushes, fixing them with latches.

Now is the time to check the performance of the hammer drill. Connect the punch plug to the outlet, turn on the punch for a while in the “drilling” mode. After making sure that the tool is working, turn it off. Set the mode switch to the “shock” position. Do not insert the tool. Check the operation of the punch in this position. At the same time, you checked the operation of the mode switch.

It remains to check the layout of the speed control button, make sure that the contact connections are reliable and you can start installing the cover plate.

The cover is secured with three M × 4 self-tapping screws of different lengths.

Connect the hammer drill to the 220 сети mains and check in all modes. The Makita 2450 or 2470 hammer is assembled and working properly!

Setting the mode selector lever

The mode switch is designed to transfer the clutch, pos. 39, to various positions and transfer the translational motion to the percussion shaft through the rolling bearing, pos. 41, to the cylinder, pos. 32.

Makita 2450 Punch Mode Switch Lever Assembly

On the axis of the inner case it is necessary to put the mode switch lever pos.82, from above the pressure spring pos.88, crush it with a flat washer pos.87. Install the circlip, pos. 86. and secure. The circlip must be carefully secured. Turning the intermediate shaft, it is necessary to carefully check the correct operation and free movement of the cylinder in the housing. This must be done now so that it does not become clear at the end of the assembly that the assembly is assembled incorrectly.

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Assembling the reducer assembly

The assembly of the gear unit is carried out on the inner casing, pos. 49.

5 kg Demolition hammer greasing problem /hammering problem

By the way, there are cases when the axles pop out of the inner aluminum housing. Both axles are pressed into the housing.

The assembled intermediate shaft is inserted into the housing of pos. 49, the rolling bearing lever of which must fall into the hole of the cylinder hinge.

In this case, the lever of the rolling bearing, pos. 41, of the intermediate shaft must fall into the joint of the cylinder, pos. 32, and the lower bearing of the intermediate shaft into the seat in the housing. This procedure is usually performed by rocking the structure until the parts completely fall into the indicated places.

Makita Rotary Hammer Lubricant

This Makita rotary hammer material meets the requirements for tool care and maintenance. It is originally used to prevent friction of parts in its most important nodes. At the same time, the wear of these parts is significantly reduced. The lubricant has an anti-corrosion effect and a washing function, since when dust and particles settle, the mechanism may break.

The assortment of the company includes several types of lubricants for various tool assemblies, of various sizes. For example, for a gearbox and drills, the type of substance will be different, since the operating conditions of these units are different. When buying material from Makita, you need to carefully study the instructions for use and purpose of the substance in order to use it correctly.

The range of lubricants of this brand includes:

  • Drill grease 196804-7;
  • Grease for gearboxes 183477-5 SDS;
  • Grease for gearboxes SDS max P-08361.

Features of maintenance of an electric drill with a perforator function

It is much more difficult to maintain an electric drill, which works with the function of a hammer drill. This hybrid of tools has some disadvantages as opposed to a conventional hammer drill:

  • they do not have special containers for pouring lubricant;
  • much more difficult to maintain the drill chuck.

Permanent lubrication is required only for the bit tip. The amount of lubricant is minimal: you just need to clean the drill from dust and apply a small (the size of a match head) amount of grease to the tip.

The same requirements apply to the lubrication of a conventional rotary hammer drill. An excess amount of grease on the drill will not harm the tool mechanism, but it will splatter in any case and can damage the repair of the premises.

But if the grease is brought into the gearbox in an excessive volume, then it will simply leak out.

There is little to say about professional rotary hammers. In home use, this tool, as a rule, does not exist.

Here, first of all, the price of the instrument plays a role, therefore, it is chosen much less often. But at the same time, this tool is considered the simplest and most unpretentious in operation.

There are usually no problems with the lubrication of this tool, because the design of the mechanism is very simple.

The gearbox also does not have any features that make it difficult to maintain. It’s simple: we unscrew the drain valve, pour the used grease into the container, rinse the punch grease container, tighten the drain hole and pour new grease to the desired mark. The gearbox of this rock drill is serviced in the same way as described above.

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Features of the choice of oil

One of the main parameters that is taken into account when purchasing a lubricant is the viscosity of the oil. High quality products are usually expensive, but in this case you do not need to save.

The perforator is an expensive tool, so you should constantly take care of its performance.

Usually, the types of grease are listed in the instructions, but if information is not available, then you can always consult the manager of the service center or the outlet where the device was purchased. Experts will select the optimal composition for the perforator.

There are also universal compounds that can be used to lubricate different types of drills. In recent years, graphite lubricants have been very popular because of their good viscosity and high quality level.

Experienced specialists confirm that many branded mixtures are of much lower quality than mixtures produced on the basis of graphite. In addition, they have a fairly affordable cost, so many people confidently make a choice in their favor.

For perforators, you should take substances such as grease and lithol. Litol. 25 is a high quality durable material with low cost. Therefore, it is very popular with power tool owners.

Do not forget that such mixtures can cause slight braking of rotating structures, and can also significantly increase the heating of the tool during operation.

If we talk about specialized lubricants, then it should be noted that to lubricate various parts, you need to use oils that are suitable for them. For example, oils that are used to treat the gearbox are unsuitable for lubricating drills.

Rotary hammer.Clean and Lubrication.DRILL

And in order to lubricate the gearbox, a more liquid composition is required, which must completely cover the contacting parts, filling the free cavities. But if there are plastic parts in the gearbox, then the lubricant can only be silicone.

The transmission mechanism can also be lubricated with plastic compounds, however, not every technique can function without interruptions when using means with a similar consistency.

Thicker mixes are suitable to reduce wear on the tail nozzles. Usually, the packaging indicates that they are designed to handle drills.

If you do not have the necessary funds at hand, you can stop at its graphite counterpart, although it removes heat much worse than specialized oil.

For cartridges, silicone grease options can be used. Lubricants are branded, which are made by manufacturers of electrical tools, for example, Hitachi or Metabo, as well as AEG, Bosch or Interskol. They can also be produced by enterprises specializing in the production of lubricant mixtures.

The most popular brands are:

  • Bosch. produces oils for gear lubrication and tail nozzles;
  • Makita. purchased for drills;
  • Lubcon Thermoplex. manufactures products for gearboxes;
  • Turmogrease. multipurpose greases;
  • Nanotek. used for shanks;
  • Interskol. optimal for drilling drills;
  • PRORAB. is a compound used for processing tail fittings;
  • Kress. used for lubrication greasing drills.

Most popular among users are Bosch and Makita.

Functions of lubricants

Many tools used for chiselling, drilling, sawing and cutting building materials require lubrication. The reason is simple. fine dust and particles of various substances get into the gearbox and the working body of the tool, increasing the friction between its moving parts. To keep your tool from breaking down and lasting for years, not months, you will need regular cleaning and lubrication for Makita drills, as well as lubricant for gear parts, which will significantly reduce wear of parts. There are several types of technical lubrication, and, as a rule, Grease for a Makita breaker is different in its properties from grease for a drill gearbox. Often, liquid technical oil acts as a lubricant. it is poured into the gearbox housing and spreads evenly between the parts. Grease for Makita drills can be consistent. in this case, it is formed from a mixture of technical oils and a specific thickener, has a high penetration ability and reduces friction between details. The grease released by Makita protects tools from corrosion, repels water and increases the mechanical stability of moving parts, and during its operation, almost no oil separates.

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Assembling the intermediate shaft assembly

lubricate, makita, rotary, hammer, reducer

Intermediate shaft

To assemble the intermediate shaft, it is necessary to put the rolling bearing, pos. 41, on the shaft, pos. 40, with the teeth to the shaft splines, and put the coupling, pos. 39, on the shaft splines.

Transmission of translational motion

On the opposite side of the shaft, put on helical gear 26 pos. 42, flat washer 8 pos. 45, bearing 608zz pos. 46 and retaining ring 8 pos. 47. The intermediate shaft is assembled.

What kind of tool is this

With the help of a jigsaw, you can quickly cut plywood, boards, pipes of small thickness. Every man with hands must have this tool in his arsenal.

It is very convenient, we ourselves were convinced of this last year, when we began to equip our dacha. Then my husband bought a Makita jigsaw, in my opinion for 3000 rubles, somewhere like that. Since then, all sawing activities have been carried out exclusively with a jigsaw. Rarely do I hear the sound of a hacksaw

Makita Gear Lubricant

The assembly of any mechanism should be started after careful preparation. It is necessary to prepare not only the parts, but also the tools, the place, the lubricant.

Of the tools, you can not do without pliers, screwdrivers, a hammer, a brush for applying lubricant.

And what is the assembly diagram of the Makita 2450 and 2470 rotary hammer?

Do-it-yourself assembly of a Makita rotary hammer can only be performed if the attached instructions are followed.

The task of the assembly process is to replace failed parts with suitable ones and ensure the interchangeability and operability of the tool.

The order of assembling the punch Makita 2450

Assembling the reducer assembly

The assembly of the gear unit is carried out on the inner casing, pos. 49.

Inner body

By the way, there are cases when the axles pop out of the inner aluminum housing. Both axles are pressed into the housing.

The assembled intermediate shaft is inserted into the housing of pos. 49, the rolling bearing lever of which must fall into the hole of the cylinder hinge. In this case, the rolling bearing lever pos. 41 of the intermediate shaft must fall into the cylinder hinge, pos. 32, and the lower bearing of the intermediate shaft into the housing in the housing This procedure is usually performed by rocking the structure until the parts completely fall into the indicated places.

Setting the mode selector lever

The mode switch is designed to transfer the clutch, pos. 39, to various positions and transfer the translational motion to the percussion shaft through the rolling bearing, pos. 41, to the cylinder, pos. 32.

Makita 2450 Punch Mode Switch Lever Assembly

On the axis of the inner case it is necessary to put the mode switch lever pos.82, from above the pressure spring pos.88, crush it with a flat washer pos.87. Install the circlip, pos. 86. and secure. The circlip must be carefully secured. Turning the intermediate shaft, it is necessary to carefully check the correct operation and free movement of the cylinder in the housing. This must be done now so that it does not become clear at the end of the assembly that the assembly is assembled incorrectly.

Marking the cut line

It is best to mark the line of the cut with a marker, since the pencil is erased from flying sawdust, and if the surface is smooth, such as chipboard, then the pencil is erased instantly. It sticks with the boards, but it still fades. So the marker will fit perfectly.