Even a person who has a vague understanding of construction understands that concrete or brick cannot be taken with an ordinary drill. For this you need special devices - diamond crowns. For their work, hammer drills, drills or diamond installations are used. The crowns will quickly and quietly make a smooth hole in the wall without nicks or chips. At the same time, they leave almost no fragments of stone and dust behind them. The price of diamond crowns cannot be called low, but it is justified by the quality of work and almost eternal service life.
TOP 16 best diamond crowns for socket boxes
| Photo | Name | Rating | Price | |||
| The best diamond crowns for premium socket boxes | ||||||
| #1 | PRACTICE 917-293 162 mm | ⭐ 5 / 5 1 - voice | Find out the price | |||
| #2 | HILTI SPX-L DIAMOND FOR CONCRETE X-CHANGE 82 MM | ⭐ 4.95 / 5 4 - votes | Find out the price | |||
| #3 | Dr. Schulze DS-LB Premium 82 mm | ⭐ 4.9 / 5 6 — votes | Find out the price | |||
| #4 | Crown Messer 06-20-082 82 mm | ⭐ 4.85 / 5 3 - votes | Find out the price | |||
| The best budget diamond drill bits for socket boxes | ||||||
| #1 | Wolverine 500068 68mm | ⭐ 5 / 5 1 - voice | Find out the price | |||
| #2 | Bison29865-73 73 mm | ⭐ 4.95 / 5 5 — votes | Find out the price | |||
| #3 | d28 KURS | ⭐ 4.9 / 5 | Find out the price | |||
| #4 | HRD150 42x150 mm, M16 Niborit v1007 | ⭐ 4.85 / 5 1 - voice | Find out the price | |||
| The best diamond bits for socket boxes in terms of performance | ||||||
| #1 | Diamond bit (102/150 mm M16) KEOS DC102.150 | ⭐ 5 / 5 1 - voice | Find out the price | |||
| #2 | Crown (68/70 mm M16) KEOS DC068.70 | ⭐ 4.95 / 5 7 — votes | Find out the price | |||
| #3 | New Formula 68 mm TRIO-DIAMOND NF068 | ⭐ 4.9 / 5 6 — votes | Find out the price | |||
| #4 | Diamond bit for concrete Hilberg Laser (68 mm) TRIO-DIAMOND | ⭐ 4.85 / 5 4 - votes | Find out the price | |||
| #5 | Diamond bit for concrete (80 mm) TRIO-DIAMOND GC788 | ⭐ 4.8 / 5 2 - votes | Find out the price | |||
| #6 | DIAM 311103 M16-SDS+ (82x70 mm) | ⭐ 4.75 / 5 5 — votes | Find out the price | |||
| #7 | Diamond bit for concrete (68x70 mm M16/HEX12) Diam 311116 | ⭐ 4.7 / 5 4 - votes | Find out the price | |||
| #8 | Diamond bit (68 mm SDSplus/M16) Enkor 48280 | ⭐ 4.65 / 5 3 - votes | Find out the price | |||
Which crown would you choose or recommend for drilling socket boxes?
Take the survey
Features of using crowns for concrete
Carbide bits are effective when paired with a hammer drill. Hammer chucks use the SDS fastening standard using locking and rotating grooves in the shank of the nozzle. This fastening system allows you to quickly change attachments without using clamping keys and provides it with free movement along the drilling axis, necessary for the full release of impact energy into the material being processed.
Before starting work, you need to make sure that there is no reinforcement at the drilling site that could damage the crown. If you have a centering drill, place it at the point corresponding to the center of the future hole and begin drilling. If the crown does not have a centering drill, then you need to attach its cutting edge to the wall surface with all teeth at the same time.
Until the crown cup is deep enough into the wall to stabilize the desired direction, do not apply excessive pressure to the tool. To effectively remove dust, it is advisable to use a construction vacuum cleaner with a special hose attachment. The peculiarity of drilling holes with a crown is that it does not need to be periodically removed from the hole for cooling or inspection, but should be drilled to the desired depth continuously.
If the hole must be through, then the drilled concrete will remain inside the cup and will be removed along with the crown. When the hole is not made through, the concrete remaining in the center of the drilled circle must be removed by chipping with a chisel or chisel. To speed up the work, after deepening the crown to a small depth, you can remove it and make several holes along the contour of the circle of the required depth with a Pobedit drill, the diameter of which is equal to the width of the teeth of the crown. Next, continue drilling with a crown.
Diamond crowns require the use of complex technical devices and devices that allow drilling without vibration and shock. Typically, the drilling device is fixed in a certain way, which greatly facilitates the work of the operator, who does not need to hold the tool, but only move it in the specified direction. At the same time, high accuracy and quality of the holes made are achieved.
How to choose the right high-quality and reliable diamond crown for socket boxes
Construction stores and markets now offer a huge number of diamond bits from different brands, to suit a variety of preferences and any budget. Most people, when choosing a diamond crown, take into account, of course, the price. But first of all you should pay attention to:
- internal thread;
- size of the socket box;
- what materials to work with;
- what holes are you planning to drill?
Video - Test and comparison of diamond drill bits for socket boxes
It is better to give preference to diamond bits from trusted brands. For the democratic segment, these are the companies Zubr, Wolverine, Praktika, Diam. If you need a more powerful device for professional drilling of durable reinforced coatings, you should consider Bosh, Makita, Hilti.
Criteria for choosing a crown for concrete
- If you are buying a crown for drilling holes in the wall for electrical sockets and switches, then before purchasing, check the diameter of the plastic or metal socket boxes that you are going to install. For standard sockets, the diameter of the mounting boxes is 68mm.
- When purchasing an attachment, you should also clarify that it is intended specifically for drilling concrete, since there are similar bits used by furniture makers for drilling chipboard and wood, which cannot cope with hard materials.
- When choosing toothed attachments, you need to carefully examine the fastening of the teeth. The deeper they are seated in the tube, the longer the crown will last.
- The choice of nozzle according to the working diameter is made based on the size of the holes in the concrete, as well as the correspondence to the power of the hammer drill. Tools with a power of 1 kW can be equipped with attachments with a diameter of up to 25 cm. The use of bits with a large diameter can lead to failure of a low-power hammer drill motor due to excessive load. This possibility should be taken into account when using commercially available adapters for mounting large attachments on small cartridges.
- Before purchasing, you need to pay attention to the shank of the nozzle, which can be solid for installation in drill chucks or with a different number of closed and open grooves, corresponding to various modifications of the SDS fastening system (with prefixes plus, top, max, quick).
Before using the bit for its intended purpose, you need to insert a centering drill with a Pobedite tip into the shank, which is secured with a clamping bolt, and then tightly screw the bowl itself along the thread and install the assembled bit into the drill chuck.
Voting for the best crown for drilling socket boxes
Which crown would you choose or recommend for drilling socket boxes?
PRACTICE 917-293 162 mm
1.89 % ( 1 )
HILTI SPX-L DIAMOND FOR CONCRETE X-CHANGE 82 MM
7.55 % ( 4 )
Dr. Schulze DS-LB Premium 82 mm
11.32 % ( 6 )
Crown Messer 06-20-082 82 mm
5.66 % ( 3 )
Wolverine 500068 68mm
1.89 % ( 1 )
Bison29865-73 73 mm
9.43 % ( 5 )
d28 KURS
0.00 % ( 0 )
HRD150 42x150 mm, M16 Niborit v1007
1.89 % ( 1 )
Diamond bit (102/150 mm M16) KEOS DC102.150
1.89 % ( 1 )
Crown (68/70 mm M16) KEOS DC068.70
13.21 % ( 7 )
New Formula 68 mm TRIO-DIAMOND NF068
11.32 % ( 6 )
Diamond bit for concrete Hilberg Laser (68 mm) TRIO-DIAMOND
7.55 % ( 4 )
Diamond bit for concrete (80 mm) TRIO-DIAMOND GC788
3.77 % ( 2 )
DIAM 311103 M16-SDS+ (82x70 mm)
9.43 % ( 5 )
Diamond bit for concrete (68x70 mm M16/HEX12) Diam 311116
7.55 % ( 4 )
Device
A concrete crown (CB) is a glass made of a high-strength steel alloy, into the bottom hole of which an adapter - a cylindrical rod - is inserted. Its one end is clamped into the hammer drill chuck. On the other side of the shank there is a head into which a centering drill is installed.
Diamond or pobedite segments are soldered along the rim of the sleeve, which simultaneously cut through the concrete in a circle and pierce the mass in depth. The shanks (holders) have grooves for longitudinal movement and rotation of the design unit by the hammer drill chuck. Side holes are made in the glasses to dump crumbled concrete into the sleeve so that debris does not interfere with the sliding of the side surface of the crown in the hole.
Before starting work, the end of the holder entering the chuck must be coated with a special lubricant. If this is not done, the moving metal parts in contact will quickly wear out and become unusable.
Main characteristics
Attachments for grinders vary in size. The most popular standard cup diameter is 125 mm. Other options include diameters from 110 to 180 mm. The power of the tool used to work with the cup must be at least 1500 W. Large nozzles significantly speed up surface treatment, but their cost is higher and they require the use of a more powerful unit. Small-sized products are used by engravers to process workpieces. The diameter of the mounting hole located at the base of the cup varies from 19 to 22.2 mm.
Working elements - cutters - are produced with the addition of small fractions of diamonds to the metal alloy. The mixture is pressed in special forms, which gives it special strength. Large diamond grains (200/160 or 160/125 microns) are used for the manufacture of cutters used for rough processing of concrete surfaces, or roughing. Fine and medium fractions (125/100 and 100/80 microns) are used in the production of finishing attachments.
The advantages of diamond grinding cups for concrete include:
- high strength;
- efficiency;
- durability;
- ease;
- balance.
Builders consider the ability to use a cup without using water to be especially important. The nozzles have special holes on the base that remove air and prevent overheating.
Recommendations from experts
To work with solid structures made of concrete, brick or stone, you should use a power tool with a power of 1500 watts or more. If an impact mode is provided for a particular crown, then the optimal force is considered to be approximately 14 J. Rotary hammers have these characteristics and the best performance.
An example of a hammer drill with an impact force of 13 J Source 220-volt.ru
Principles of working with a diamond cylinder for drilling concrete
Working with a hammer drill, drill, if a cutting edge is used, requires compliance with a number of rules that eliminate the risk of equipment breakdown:
Do not put pressure on the tool while working with it, because
this may cause increased heating of the nozzle, and will additionally accelerate its wear, in addition, pressing on the drill/hammer will not provide the desired effect - cutting will not be performed faster; if the structure is made of reinforced concrete, it is permissible to work with such material only using the dry cutting method; in this case, contact with water can lead to the formation of corrosion in the future; if moisture penetrates deep into the wall, this will cause its destruction; you need to pay special attention to fixing the nozzle on the surface of the structure, if during the drilling process the cutting edge moves, the integrity of the bowl will be damaged, and it will be impossible to restore it.
overheat protection
To prevent premature wear of the nozzle due to an increase in its temperature during the drilling process, it is recommended to use the tool for working with materials of the types specified in the accompanying documentation of the equipment. If water cooling is provided, care must be taken to ensure that a sufficient volume of liquid is supplied. Its decrease or increase can cause complications in the drilling process.
The amount of water is determined taking into account the diameter of the nozzle. The higher the value of this parameter, the more intense the heating of the cutting edge occurs, which is due to an increase in the surface area of the crown entering the concrete. This requires more efficient cooling. To operate the equipment, water is supplied from the water supply system. In this case, the pressure is sufficient to ensure the required effect.
