Choose a grinder (angle grinder)
During construction, a tool with which you can cut various materials, namely a grinder, is extremely necessary.
Content
- General information
- The simplest Bulgarian economy - class
- Mid-level grinder
- Professional Bulgarian
- New items video
- Additional materials
- Safety measures during the work with the grinder
- Specialist advice video video
- Models of angle grinders (grinders)
General information
Before you buy a grinder, you need to submit a number of tasks that require this tool to complete. Work can be different, for example: installation of a metal fence, installation and dismantling of metal doors, punching walls for laying communications, cutting metal, etc.
It is important to consider the hardness of the material, the depth of cut - the quality and diameter of the cutting disc depends on these parameters.
When purchasing a grinder, pay attention to its weight, as professional tools usually have a lot of weight, and are hardly convenient for use in everyday life.
After analyzing all the tasks, select an adequate model.
The simplest Bulgarian economy - class
An angle grinder (angle grinder) or an economy-class grinder, costing up to 1400 rubles, does not have many important parts, devices, and is inferior to more expensive models not only in terms of functionality, but also in terms of safety and reliability.
The protective case of such a tool is usually made of thin steel. Fastening - with a clamp with a tightening screw and nut, it is strong enough, but not very convenient in operation, since it is necessary to use a suitable wrench and screwdriver.
The engine does not have protection against dust, as a result, small particles of the material with which they work cause abrasive wear of moving parts, and metal dust can even lead to a short circuit.
Based on the above, it is better to buy a little more expensive and purchase a more reliable household model with positive recommendations to be sure of your tool.
Mid-level grinder
Middle-class grinders of famous brands have prices up to 3500 rubles. It is a safe and convenient tool.
Such angle grinders, as a minimum, have sealing inserts and a varnish coating of the rotor, which prevents the penetration of dust. Such household machines for changing discs are equipped with a quick clamping mechanism without the use of an auxiliary tool, such grinders can quickly adjust the position of the protective casing, have large, convenient buttons for starting the engine and fixing the spindle, and respond to hand pressing in the tarpaulin gauntlet.
Depending on whether the owner is right-handed or left-handed, the handles of household grinders can be screwed on to the right or left, and in some models, for the convenience of working in difficult conditions, the handles are installed on top.
Professional Bulgarian
Professional models or premium household grinders have a powerful engine with a large resource for uninterrupted operation.
The mechanism is reliably protected from dust, has a soft start function, provides a gradual increase in the speed of rotation of the disk, this allows you to include the grinder even in a weak household power supply.
When the network is turned off, the auto-off system of the brushes stops the grinder, when the electricity reappears - the tool must be turned on.
This prevents injury to the master, simple models in this situation start themselves.
To prevent strong vibration, there is a self-balancing system of the moving disk, the removable handle has an anti-vibration insert.
Super models have a gagged body, the handles have a corrugated rubberized coating or pads.
This technique is expensive.
New items
Mobile angle grinders, which operate on removable and rechargeable batteries, have appeared on the market for construction tools.
Such independent compact equipment is very convenient when working in difficult conditions, in hard-to-reach places where the power cable cannot be reached.
Cordless grinders are equipped with an electronic system of protection against an overload and repeated inclusion.
Such models have a soft start function, a small diameter grinder is convenient to hold in your hands.
There are rubber pads on the plastic case, which prevents slipping of the hand.
These tools are equipped with powerful energy-intensive lithium-ion batteries, but they last for no more than 1 hour of operation.
It must be remembered that lithium-ion batteries tend to age, regardless of their frequency of use.
When purchasing a cordless grinder, pay attention to the date of manufacture, the fresher the model, the better.
The batteries of the grinder must be stored either fully charged or completely discharged, since half-filling leads to damage to the battery.
Additional materials
When using the grinder in the household, you need to purchase a variety of consumables.
Namely: cutting and grinding wheels, grinding plates, disk brushes to remove rust and paint, cup brushes for cleaning operations, conical brushes for processing hard-to-reach surfaces.
Use your consumables for each type of job, such as 3 mm cutting discs. They are used only for cutting metal; for grinding metal and stone, corundum circles with a thickness of 6 mm are used.
The price of supplies depends on many factors.
Disks of domestic production are cheap, and imported products are several times more expensive.
Safety measures during the work with the grinder
By injury risk, the Bulgarian is known for her leadership. Simple personal safety rules must be followed to prevent disasters.
1 When working with angle grinders, it is necessary to use protective equipment: glasses, a respirator, gloves, clothing should tightly cover the whole body.
2 Never use unsuitable supplies. Disks must match the type of angle grinder in terms of landing diameter, thickness and maximum speed.
3 The workpiece must be well fixed.
4 Hold the grinder with both hands.
5 Do not drop the tool, do not allow outsiders to the working angle grinder.
6 Do not use defective discs.
Specialist advice
When choosing a grinder, the power cable should be at least 2 meters.
The cable should be dressed in a protective rubber stocking at the point of entry into the tool body, all elements should fit snugly against each other, when inspecting the tool there should be no backlash, since even a slight looseness can lead to a breakdown in the connection and cable failure.
Remember that a grinder can do many work, but not every material is worth trusting.
For example, it is possible to cut black rolled steel with a grinder, and material with a protective and decorative coating, such as metal tile and corrugated board, is not recommended, since flying sparks burn out the polymer layer and zinc. As a result, foci of corrosion form, which grow into spots of rust.
If you buy a grinder for wood, counting on grinding work, experts advise you to purchase a model with adjustable disk speed. To process plastic or wood, a relatively slow regime is necessary, since at high speed the material can char or melt.
Models of angle grinders (grinders)
DEFORT DAG 901 N
Spindle lock; speed adjustment. Power consumption 900 watts. Idling speed 11000 rpm. The diameter of the disc is 125 mm. Weight 2.4 kg.
METABO W18LTX 125
Rotary battery pack for working in hard to reach places; restart protection. The voltage is 18 V. The rotation speed of the disk is 8000 rpm. The diameter of the disc is 125 mm. Weight 2.5 kg.
GRAD-M UShM 750
Spindle lock; the ability to work in continuous mode; 3 positions for fixing the handle; compact size. Power consumption 860 watts. The idle speed is 11000 rpm. The diameter of the disc is 125 mm. Weight 2 kg.
AEG WS 21-180 U
Protected against abrasive dust; soft start; spindle lock with safety mechanism. Power consumption 2100 watts. Idling speed 8300 rpm. Diameter of a circle is 180 mm. Weight 4.7 kg.
HAMMER USM 1200S
Spindle lock; additional handle; power button lock. Power consumption 1200 watts. The rotation speed of the disk is 660-3000 rpm. The diameter of the disc is 180 mm. Weight 3.7 kg.
