The nozzle wall chaser grinder on: the appointment, how to make their own hands

Wall Chaser - what it is and how it works

Structurally, wall chaser like a circular saw. It has a protective housing, engine block and two cutting disc facing each other at a distance. This gap can be adjusted, thus changing the width of future grooves. The depth of the same is not fixed and can be changed by increasing the disc dive angle into the material.

Wall Chasers have a high capacity, comfortable handle to create pressure on the discs during operation, system RAM disk replacement and adjustment of the width. Some models can be connected to a vacuum cleaner to remove dust and debris.

Wall Chaser model and how they work

Let's look at a few Wall Chaser Concrete for the understanding of the design, principle of operation and features.

Interskol PD-125 / 1400E

Wall chaser from domestic producers. Two disks of 125 mm capable to do the furrow depth of 30 mm and a width of 30 mm. The power unit is 1400 watts. A maximum number of revolutions - 9500 per minute. The cost of this tool is about 6000 rubles.

Bosch GNF 35 CA

A more powerful version of the hand-held wall chaser for aerated concrete, concrete and brick. 2 of the cutting disk 150 mm. Maximum slot width - 39 mm and the maximum depth - 35 mm. Device power is 1400 watts. The design involves the connection of a vacuum cleaner and the withdrawal of dust and debris. The cost of such a tool is quite high - 40 000 rubles.

makita SG150

Powerful and efficient wall chaser. Cutting depth can be up to 45 mm, and the width - 35 mm. Capacity is 1800 W, but the number of revolutions slightly less than usual - 7800 rev / min. To him, you can also connect a vacuum cleaner. It should be the instrument for about 42 000 rubles.

How not to buy an extra tool - Head shtrobleniya on grinders

Nozzle shtrobleniya to grinders - is a good alternative to help save money on buying expensive individual instrument. In the simplest case - it is a bit modified casing on the grinder and an additional drive on the tool shaft. In this case, angle grinder must meet the requirements of power - be not less than 1500 watts. Buy nozzle wall chaser on the grinders in the store does not work, since it is a multi-piece unit. But it is possible to find housing with increased distance to the secondary drive, with hood and automatic tilting mechanism casing for security.

As of Bulgarians make wall chaser

You can make a manual wall chaser and the hands. For aerated concrete, concrete and brick. It will be cheaper, but will require certain skills and the availability of other support tools, such as welding machine, drill, lathe. Drawings for wall chaser of Bulgarians with their hands, as a rule, no. Everything is done according to their own needs, the availability of a certain type of angle grinders and opportunities.

Manufacturing protective casing

Perhaps the most crucial moment in the whole process of manufacturing the nozzle wall chaser on the grinder. This will require the skills of the welder and welding machine. Metal is better to pick about 1-2 mm. This will give better protection from concrete fragments and disk in the event of the dispersion. FIELD placing discs must be wide with a margin on the two disks, with a way so as to adjust the overall width of up to 50 mm. The diameter of the conventional disk for cutting concrete is typically 125 mm. This is enough to furrow proshtrobit about 30 mm deep, which is enough for most communications. Therefore, the size of the housing should be slightly larger than the diameter of disks used.

The casing design must take into account the outlet, which is connected to the vacuum cleaner wall chaser. His hands can pick up the hole diameter required. In principle, it is possible to do without it, but it is noticeably degrade performance wall chaser and drive life. Yes, and work in the dust is not so comfortable.

A reference plane or outsole is also made of metal. It is a slot with a margin for the maximum width of the two discs. An ideal variant is to manufacture the sole of a fixed depth. This will allow Stroebe groove to the desired depth. It is also a good idea to take care of tilting the foot of the line of action of disks to avoid injury. This can help in the installation of the spring retention mechanism.

fastener system can be repeated with any of the original casing, which essentially is a clamp with bolt and fixed nut. As mentioned earlier, buy a nozzle for shtrobleniya on the grinder, as such, will not work. There are only modified casings which can speed up a little rework process.

Shaft or the nut

In order to secure the second disc grinder on, the standard length of the shaft may not be sufficient, especially for shtrobleniya wide grooves. Here you can go two ways: buy or produce an elongated shaft or buy or make a special nut to mount for the second disk.

Find the finished shaft would be quite difficult, because the manufacturers make them extremely rare. It can carve a lathe alone or to order this work in any lathe shop.

But most often used special nut. Find it or make easier. Structurally, it is a clamping nut on the other side of which there is another one with a small shaft. It put the second disc and secured another nut. To narrow grooves about 0.8-1 cm and all you can do two standard nuts. The first disc is placed as usual, and the second - from the top, and then a second nut is secured.

Approximate results from the finished wall chaser grinder with his own hands is on video:

Rules of operation and safety of the operator

Angle grinder - in itself a dangerous tool. A Bulgarian for shtrobleniya only increases the danger. Let's go through the basic rules of safety grinder using a nozzle wall chaser:

• the first and most important rule is often violated and entails grave consequences: Never remove the safety guard. Remove it, as a rule, access to difficult places, corners, etc., as well as for the installation of larger diameter disc, which generally can not be done;

• each disc has a certain speed norms and types of processed materials. Can not be broken and cut concrete on metal disc;
• you must use high-quality consumables;

• sawing grinder wall chaser with rotation must be directed along the direction of travel, not against;
• LBM power should correspond to the type of work. If needed Grooves 50 mm and a depth of 40 mm, the number of watts in the tool should be not less than 1500;
• goggles and gloves will protect hands and eyes from dust and flying out the disk fragments;

• before installing the drive on grinders need to make sure that it is intact and not deformed;
• disc changer, or increase the distance between them should disconnect grinder from the mains.