An angle grinder (angle grinder - angle grinder) is a power tool designed for cutting, cleaning and polishing various materials. The tool is able to work with a variety of hard and soft alloys (steel, non-ferrous metals), concrete, brick and tiles. Among the best grinders there are models from different countries: Metabo, Makita, Bosch, Bort, DeWalt, Hitachi, Bison.
Content:
- Table: general characteristics
- The main parameters of grinders
- What is the difference between USMs. Problem of choice
- Model overview
- Safety
- Helpful Hints
- Conclusion
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Table: general characteristics
| Model | Power, W) | Min revolutions (rpm) | Max revolutions (rpm) | Clamp Nut Type | Handle type | Warranty (month) |
|---|---|---|---|---|---|---|
 Metabo WEV 15-125 Quick | 1550 | 2800 | 11000 | Quick release | Vibration-absorbing | 12 |
 Makita GA4530 | 720 | 11000 | 11000 | Full construction | Simple | 12 |
 BOSCH GWS 13-125 CIE | 1300 | 11500 | 11500 | Full construction | Simple | 12 |
 Bort BWS-950 | 900 | 12000 | 12000 | Full construction | Simple | 12 |
 Metabo WEV 17-125 Quick | 1700 | 11000 | 11000 | Quick release | Vibration-absorbing | 12 |
 BOSCH GWS 10,8-76 V-EC 0 | 300 | 19500 | 19500 | For hex key | Missing | 12 |
 DeWALT DWE4215 | 1200 | 11000 | 11000 | Full construction | Vibration-absorbing | 36 |
 ZUBR UShM-115-800 M3 | 800 | 11000 | 11000 | Full construction | Simple | 60 |
 ZUBR UShM-P180-2100 PV | 2100 | 8000 | 8000 | Full construction | Vibration-absorbing | 60 |
 Hitachi G13SN-NU | 840 | 10000 | 10000 | Full construction | Simple | 36 |
Scheme angle grinder
Reference: Bulgarians in the USSR (in the 60s of the XX century) began to be called the products of the company Sparky Eltos AD, whose production sites were located in the city of Lovech (People's Republic of Bulgaria). So they call angle grinders to this day, but only in the territory of the former Soviet Union.
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The main unit of any power tool is the engine, and its main parameter is power. The larger this value, the easier the angle grinder to cope with its duties. Even under high loads, the electric motor must spin quickly. The recommended average value when working with various materials is at least 1-1.5 kW and above. At home, you can be content with a less powerful device.
The maximum diameter of the disc to be installed is important if you need to cut through the material to a greater depth. It should be noted that the larger the diameter of the circle, the more difficult it will be to work in uncomfortable positions and it will not always be possible to crawl into some hard-to-reach places.
Quick Nut
The number of revolutions of the circle depends on its diameter. Small circles spin up to 12 thousand revolutions per minute. Many professional angle grinders allow you to adjust that value. As a result, the user can configure the tool to perform various jobs:
- cutting blanks – maximum speed is required, this increases the speed of work and reduces the likelihood of biting the circle
- Cleaning work - a rough (peeling) circle is used. Very often, after welding products, it is required to smooth the seams, and after cutting off the workpieces, to align the ends. The speed is set to either maximum or average
- Polishing - this operation cannot be performed at high speeds: the surface of the product will burn. Usually use flap discs or special polishing discs and set a low speed.
Additional useful options and features:
- Quick Nut – allows you to quickly change circles without using a special key
- Smooth start - is on most modern angle grinders. When turned on, the motor smoothly gains momentum and does not twitch in the hands of the owner
- Automatic shutdown - also present in almost all grinders. Even if the button is locked, if the instrument falls to the ground, it will turn off.
- Battery operation – the tool is self-contained, which will allow you to work far from sources of electric current
- Vibration damping handle – makes it easier to work with the angle grinder during operation
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What is the difference between USMs. Problem of choice
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The main parameter that determines the quality of two grinders, approximately equal in technical characteristics, is the assembly culture. Most household appliances and power tools are assembled in China, South America or Asian countries. But if the plant is able to provide tight control over the products, then the consumer has nothing to worry about. The tool will work for a long time.
When a manufacturer designs a power tool, it falls into one of two categories: professional or amateur. The difference lies in the estimated time of using the angle grinder during the work shift. The tool for professionals withstands heavy loads and is designed to function for 8-12 hours a day with short breaks.
Angle grinders for amateur masters should be operated in a gentle mode: an hour of work - half an hour break. It is important to understand that the quality of parts installed on non-professional specimens is not too high.
When buying an angle grinder, you should pay attention to its brand, and especially to the network of warranty workshops in the country of residence. When choosing a brand, the buyer overpays for the opportunity to repair or service the product near his home without any problems.
And if the manufacturer included spare parts (brushes) in the product kit, this is a big plus.
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Metabo WEV 15-125 Quick
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Metabo WEV 15-125 Quick
Professional and expensive tool. Flawless build. Suitable for daily use. On most Metabo models, the clamping nut is tightened by hand (without a special two-prong wrench) and securely holds the tooling. There is protection against overheating and automatic shutdown after a fall.
Review grinder metabo WEV 15 125 Quick
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
Makita GA4530
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Makita GA4530
Reliable angle grinder from a Japanese company. Not everyone will be familiar with the location of the start button - on the side. Quite powerful and noisy.
Angle grinder angle grinder MAKITA GA4530
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
BOSCH GWS 13-125 CIE
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BOSCH GWS 13-125 CIE
Powerful professional tool. Electronics stabilizes the speed of the electric motor, so the user will not feel jerks during operation. The protective cover can be removed and rearranged without the use of a wrench or screwdriver. There is a speed control.
Bulgarian Bosch GWS 13-125 CIE
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
Bort BWS-950
Bort BWS-950
Budget angle grinder of medium power is suitable for home and summer cottages. The set includes a set of spare brushes. You can change the speed of rotation of the electric motor using the wheel on the end of the housing.
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
Metabo WEV 17-125 Quick
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Metabo WEV 17-125 Quick
Professional angle grinder with traditional quick-lock nut. There is a soft start function. The protective cover is fixed with a latch and can be easily moved to the desired position. The speed of rotation of the electric motor is regulated by a wheel. Noisy at idle.
Review Metabo WEV 17-125 + Mechanic
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
BOSCH GWS 10,8-76 V-EC 0
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BOSCH GWS 10,8-76 V-EC 0
Lightweight cordless tool from a German manufacturer. Weight - less than 1 kg. It is convenient to work in hard-to-reach places, it is easily held with one hand. It is useful for minor repairs at home and in the country, as well as when repairing a car.
The angle grinder comes with a plastic case for storing the kit, extra battery, charger, tool changing key and spare blades (for cutting steels and ceramics). There is a protective cover.
GWS 10.8-76V EC. Practice
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
DeWALT DWE4215
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DeWALT DWE4215
Reliable and powerful angle grinder for professionals. There is a soft start system and voltage drop protection. Works quietly, vibration within normal limits. A long cable in a frost-resistant braid that will not become stiff in the winter outside.
Angle grinder DeWALT DWE4215
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
ZUBR UShM-115-800 M3
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ZUBR UShM-115-800 M3
Budget option angle grinder for home and garden. The tool is lightweight and the motor runs smoothly. A bit noisy. It is not recommended to heavily load the tool.
Overview grinder ZUBR ushm125-800
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
ZUBR UShM-P180-2100 PV
ZUBR UShM-P180-2100 PV
Angle grinder with soft start system. Comfortable handle that can be rotated around its axis. The brushes are easy and quick to replace. For use at home or in the country in a sparing mode.
ZUBR UShM-P180-2100 pv
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
Hitachi G13SN-NU
Hitachi G13SN-NU
Lightweight angle grinder that can be operated with one hand. Holds up well during use. Quality build. With active use, it heats up quickly.
Hitachi angle grinder after 4 years of operation.
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
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Safety
The result of a security breach
When working with angle grinders, it is important to adhere to the following rules:
- You can not work in unbuttoned clothes. In the process of work, a sleeve or other element of overalls can get into the area of the rotating parts of the grinder
- Be sure to use glasses: not only pebbles from circles, but also metal shavings can get into your eyes
- It is forbidden to remove the protective cover: if the cutting wheel of the angle grinder bites into the part being cut, the tool may escape from the hands. The protective cover will rest against the part and the grinder will turn off without damaging the owner's hands
- Before work, you should carefully inspect the cord: there should be no bare wires
Bulgarian. Safety precautions angle grinder. What are discs
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Secure workpiece clamping reduces the risk of disc bite
Sometimes during operation, the circle bites between the clamping nuts and it cannot be dismantled either manually or with a wrench. If there is a vice at hand, then, having broken off the remnants of the circle along the entire diameter, the upper nut should be clamped in the jaws. Then, pressing (and holding) the latch, the grinder body must be turned counterclockwise.
You can expand the functionality of the tool by making a minicircular out of the angle grinder. Now she will cope with the processing of small wooden blocks, boards and other similar materials.
It is easy to determine that the brushes will soon require replacement: first, sparks will appear in the area of \u200b\u200bthe electric motor collector, which is visible through the longitudinal slots of the housing (the more, the greater the load). Then the tool will stop responding to pressing the button, but when manually scrolling the shaft, it will “pick up” the current and rotate.
What to do if you can’t unscrew the jammed circle on the grinder (second method):
How to easily unscrew a jammed disc on a grinder
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
How to make a mini circular:
Bulgarian circular
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
Do-it-yourself replacement of graphite brushes in grinder makita
TOP 10 Best grinders for home and work | Overview of popular models for 125 and 180 mm + Reviews
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Only someone who clearly understands why the tool is being purchased and in what mode it will work can buy the best grinder for himself. It is not always advisable to buy an expensive professional tool. The experience of many people suggests that even budget angle grinders can fully satisfy their owners and serve them for many years.
