A hammer drill is far from always able to cope with making holes, especially large diameters in materials such as high-strength concrete. Therefore, during the performance of various tasks related to repair or construction, a special installation is used to perform the so-called diamond drilling. It is perfect for drilling, as well as drilling of various diameters of holes in materials with an increased level of strength (for example, in brick, concrete surface, stone). In addition, quite often, diamond-type drilling tools are actively used during indoor or outdoor work with artificial stone reinforced with concrete.
The mechanism of such devices consists of several different elements: a drive, a bed, and a special working surface (crown). Which company is the best device for performing diamond drilling, what types of such devices are, what are the main selection criteria, we will describe below.
Content
Tool description
The main components that make up the unit used for diamond drilling are a rigid bed, a motor or an electric motor (drive), as well as special diamond core bits or spiral drills, which act as a direct working tool. During work, the bed is rigidly fixed with a special plate directly to the surface in which drilling will be carried out. If necessary, this unit can be mounted near the surface that will be processed with it.
Depending on the model of the machine, its working mechanism can also consist of a gearbox, a manual or electric pump that supplies water, an oil tank, a dust removal system (dust collector).
There are several different types of these machines that are used for drilling. When drilling small holes, no more than 120 mm in diameter, on surfaces such as brick walls, concrete floors, as a rule, small hand-type drilling machines are used.
To make holes with a large diameter, units of a more complex design, of a bed type, are used. In such machines, the motor with diamond bits is fixed directly on the bed itself and is able to move smoothly during drilling directly along the axis of rotation itself.
On a note! Drilling machines are more versatile than similar hand-held tools. Thanks to their use, you can perform tasks of a wide variety of spectrum. In addition, when using them, the accuracy of the hole being made, relative to its diameter and angle, increases significantly.
Small-sized bed-type machines are stationary equipment that allows diamond drilling. However, it should be noted that to perform tasks of increased complexity, there are also special units, which, by their design, are mounted implements. As a rule, they are installed on excavators - loaders, special road construction machines, and so on.In the domestic construction market, as a rule, units equipped with wheeled chassis do not appear. However, in world practice, during construction work, such self-propelled machines are quite often used when working with materials of increased strength, for example, such as reinforced concrete.
As a drive in machines for performing diamond drilling, electric motors, internal combustion engines can be used. In addition, in some models, a hydraulic or pneumatic motor can be used as a drive.
Advice! The selection of the unit by type (electric, gasoline, etc.), as well as the power of the power drilling drive, primarily depends on such factors as the indicator of the diameter of the holes that must be made, and the strength indicators of the materials with which it is supposed to work.
The most powerful devices are of the hydraulic type. They are used in a wide variety of applications with monolithic, highly reinforced concrete or hard rock.
Feature of the units
Thanks to the development of modern technologies, there are universal tools, specialized equipment that allows you to make holes of different diameters in materials with high strength indicators, to cut a durable concrete coating accurately, in a short time and safely. The use of special drilling equipment with diamond coating significantly speeds up the surface treatment process, during both repair and construction activities. Also, quite often, such devices are used when dismantling structures or during redevelopment.
The principle of work, in which diamond-type drilling is actively used, is reduced to the use of a special unit consisting of a motor, a sputtered bit, and a device called a stand. Using this equipment, you can quickly drill holes of almost any diameter, cut special niches in the walls or, if necessary, create special openings.
Important! The use of such machines when processing hard surfaces (for example, when creating special niches, openings inside the walls) is absolutely safe for adjacent structures standing nearby. When using such installations, strong vibration loads do not arise that can destroy structures.
When using machines for diamond drilling, the destruction of the treated surface occurs pointwise, directly in the place where the drill of the unit works. Absolutely no cracks appear on the surrounding structures located near the surface that is being processed during the implementation of construction activities. Holes made with the help of such aggregates are absolutely even, with a smooth surface and do not need additional processing.
The advantages of diamond drilling include:
- Accuracy of adherence to all parameters while performing various tasks;
- The rate of the drilling process (1-5 cm per minute);
- Lack of loud noise;
- Absence of a huge amount of dust during surface treatment, drilling;
- The ability to drill, both in the horizontal and vertical planes at the required angle for the operator.
To use such a machine, you will need to be connected to the mains power supply as well as a water supply (to eliminate the generated dust). Such devices can be used to make holes for water pipes or other engineering communications.
Review of the best popular manufacturers and models of diamond drilling rigs
What is the best diamond drilling machine to buy, how much does it cost? The modern construction equipment market is represented by many such units from a large number of manufacturers of different price categories.The most popular, best manufacturers of such units, which hold a high rating among other companies, are:
- BOSCH. A company popular all over the world that produces a convenient, reliable and high-quality tool. The rigs presented by this company are perfect for both dry drilling and for various construction tasks using water. Additionally equipped with a soft start system, dust removal.
- Hilti. The equipment presented under this brand is considered one of the highest quality, as well as productive. Basically, this company is engaged in the production of compact and lightweight models that are suitable for hand drilling.
- WEKA. A popular German manufacturer that produces equipment with an increased level of wear resistance and reliability. Units manufactured under this brand have a long service life and increased power engines.
- Elmos. The machines manufactured by this company are used for drilling large-diameter holes in materials of increased strength (for example, granite, stone, asphalt, concrete). The devices are equipped with variable speed rotation and can be used to perform various tasks on inclined planes.
- CARDI. Under this brand, mainly industrial-type machines are produced, which are designed for operation in conditions of increased complexity. They are equipped with several speeds and can create holes up to 600 mm in diameter.
- DIAM. The installations of this manufacturer are distinguished by their quality and reliability. As a rule, most of the models produced under this brand are equipped with a special inclined stand, which allows you to perform surface drilling work within the range of 30-150 degrees.
Best diamond drilling rigs for 2020
Diamond drilling is used not only during large construction activities, but also during small repairs in offices or buildings. As a rule, special diamond drills are used to make small diameter holes. Drilling rigs are used for:
- Laying a variety of engineering communications (communications, heating, plumbing);
- Installation of a variety of fences, railings;
- Making ventilation holes.
Unlike light drills, the use of special installations allows you to perform work, make even holes of large diameter, both on a flat and on a curved surface.
When choosing such an installation, it is recommended to pay attention to the bed. After all, the full functioning of such a high-power unit is impossible without this element. The bed ensures that the machine is positioned in a certain position during drilling. If the installation starts to move during drilling, this is fraught with jamming of the crown.
In powerful devices, the weight of the electric motor reaches 10 kg or more. Therefore, it is problematic to independently hold such a unit in one hand, and even in the switched on state. Therefore, to work with them, frame installations are used, which, according to the type of their fastening, are anchor, vacuum and universal.
DIAM ML - 200A
This popular, according to buyers, inexpensive model of the diamond drilling rig belongs to the professional class of drilling equipment. This machine is designed for making holes in brick, reinforced concrete or in-situ concrete. It can also be used to drill holes in blocks made of natural or artificial stone.
The weight of this power tool is 19 kg (the weight of the interchangeable tool is not included). During the execution of work, it is permanently installed and fixed with anchors. Thanks to the availability of replaceable diamond bits, this unit is capable of making holes with a diameter of 20 to 200 mm (brick, concrete). In reinforced concrete structures, this installation is capable of making holes with a diameter of no more than 180 mm.
During drilling, a water supply is connected to the installation, which is necessary to cool the device. The surface drilling angle of this model of diamond machine is from 0 to 45 degrees. The device is equipped with only one speed and is additionally equipped with a special electronic overload protection. The power level of the device is 2800 W. The maximum number of revolutions during idle is 617 rpm. in one minute.
Advantages:
- Reasonable price for professional equipment (average cost is 51,500 rubles);
- Power;
- The presence of water cooling;
- Possibility of drilling at an angle.
Disadvantages:
- Large weight (19 kg);
- No speed adjustment function (only one speed).
Rotorica Didri 330
Reliable, high-performance 3,300 W diamond drill. Equipped with 3 speed modes of operation. The maximum hole diameter (when working with a reinforced concrete surface) is 352 mm. Additionally, the unit is equipped with a special hand pump, water cooling. The weight of the device stand is 19 kg. The weight of the entire unit is 34.5 kg. Depending on the selected speed mode, the rotation speed of the device, the working stroke of the chuck is 400, 800, 1200 revolutions per minute.
Also, this unit is equipped with a special indicator that allows you to monitor the oil level, laser positioning. For longer, more reliable operation, the device is equipped with overload protection.
Advantages:
- Availability of 3 speed modes;
- Power;
- Torque (minimum 400, maximum - 1200 rpm);
- Functional;
- The presence of a quick-change mount for the motor;
- The ability to connect water cooling;
- Equipment.
Disadvantages:
- Cost (125,000 rubles);
- Weight (34.5 kg).
Prodiamond PRO303EL - N
Designed for making holes in reinforced concrete, brick, stone and other surfaces. It is possible to work with the unit exclusively on the bed, with the presence of a water cooling supply. This model is equipped with a 3-speed gearbox, which allows work to be carried out at an optimal level.
The engine of the device is equipped with a soft start system, and its body is made of aluminum. The gearbox of the device is made of high strength steel. The power of the installation is 3420 W. The maximum drilling diameter is 300 mm. The maximum number of idle revolutions (depending on the selected speed) is 380, 870, 1620 per minute. The weight of the device is 20 kg.
Advantages:
- High power;
- The presence of a three-speed gearbox;
- Electronic and mechanical engine protection;
- Equipped with a soft start system.
Disadvantages:
- Do not work at an angle;
- High cost (153,630 rubles).
Messer KDM52D
The device is designed for making holes in reinforced concrete structures, as well as in concrete with a diameter of no more than 120 mm. A feature of this apparatus is that it is capable of performing work without supplying coolant. To do this, a construction vacuum cleaner must be connected to the engine of the unit. To perform work without coolant, special diamond core bits must be used.
Also, this device is capable of performing work with a connected pneumatic tanker, which, under pressure, supplies cooling liquid to the unit. The power of the device is 1800 W, and the maximum number of revolutions per minute is 3600. This tool is equipped with a two-speed mode of operation, as well as an electronic overload protection function. The stand of the device is equipped with the ability to tilt, which allows drilling holes at the desired angle.
Advantages:
- Drilling capability with or without coolant supply;
- Light weight (14 kg);
- The presence of two speeds;
- Cost (102,460 rubles).
Disadvantages:
- Low power;
- The maximum drilling diameter is only 120 mm.
AT - S SU - 255N
Modern budget professional-type drilling apparatus.Perfect for drilling, drilling holes with a diameter of no more than 255 mm in walls, roofs, floors. With the help of this device, you can conduct channels for plumbing, ventilation, communication cables and other engineering structures. The "N" designation that appears in the name of this machine indicates that it can tilt and work from 0 to 45 degrees. For each material (metal, wood, concrete), it is recommended to use special drill bits designed for working with it.
The power of the installation is 4350 W. It is equipped with a water cooling system and operates in one speed mode. The maximum number of revolutions of the device is 550 per minute. Additionally, it is equipped with a special electronic type system that protects the devices from overloads. The weight of the device is 21.8 kg.
Advantages:
- Low cost (62,595 rubles);
- Power;
- Possibility of drilling at an angle.
Disadvantages:
- Large weight (21.8 kg);
- Works in single speed mode only;
- Low RPM in one minute.
Comparative characteristics of diamond drilling rigs
| Model name (description) | Power, W) | Maximum drilling diameter (mm) | Maximum number, number of revolutions per minute | Cost, rub.) |
|---|---|---|---|---|
| DIAM ML - 200A | 2800 | 200 (brick, concrete); 180 (reinforced concrete surface) | 617 | 51500 |
| Rotorica Didri 330 | 3300 | 352 | 1200 | 125000 |
| Prodiamond PRO303EL - N | 3420 | 300 | 1620 | 153630 |
| Messer KDM52D | 1800 | 120 | 3600 | 102460 |
| AT - S SU - 255N | 4350 | 255 | 550 | 62595 |
What to look for, how to choose and what mistakes to avoid when choosing such equipment When choosing a diamond drilling machine, you should first of all take into account the goals and types of work on which it will be used. Also, these devices do not significantly differ from each other in technical characteristics, ranging from engine power and ending with the diameter of the hole they can make in the surface. For simple work, you can purchase an inexpensive mid-price diamond drilling rig, which will pay off in the shortest possible time. If you use a device presented in our rating, or you have experience in using installations from other manufacturers, please leave a review and share with us your opinion and recommendations in the comments.
