Angle Grinder 230 With Speed Control

angle grinder with speed control and smooth descent

angle, grinder, speed, control

Professional two-handled angle grinder for abrasive grinding with intermediate wheel size.

Rated power consumption, W: 1300
Maximum disc Ø, mm: 150
Grinding wheel idling speed, rpm: 8500
Speed ​​control: not
Weight, kg: 2.9

Professional two-handed angle grinder for abrasive grinding with intermediate wheel size.

Rated power consumption, W: 1800
Maximum disc Ø, mm: 180
Grinding wheel idle speed, rpm: 8000
Speed ​​control: not
Weight, kg: 4.5

Professional lightweight large 2-hand angle grinder for abrasive grinding.

Rated power consumption, W: 2200
Maximum disc Ø, mm: 230
Grinding wheel idling speed, rpm: 6500
Speed ​​control: not
Weight, kg: 5.2

Professional large two-handed angle grinder for abrasive grinding.

Rated power consumption, W: 2100
Maximum disc Ø, mm: 230
Grinding wheel idling speed, rpm: 6500
Speed ​​control: not
Weight, kg: 5.3

Professional large 2-hand angle grinder with closed main handle for abrasive grinding.

Rated power consumption, W: 2100
Maximum disc Ø, mm: 230
Grinding wheel idling speed, rpm: 6500
Speed ​​control: not
Weight, kg: 5.3

Professional large two-hand angle grinder for abrasive grinding.

Rated power consumption, W: 2300
Maximum disc Ø, mm: 230
Grinding wheel idling speed, rpm: 6500
Speed ​​control: not
Weight, kg: 5.9

Professional large two-handed angle grinder for abrasive grinding.

Rated power consumption, W: 2600
Maximum disc Ø, mm: 230
Grinding wheel idle speed, rpm: 6500
Speed ​​control: not
Weight, kg: 6.4

Professional lightweight large two-hand vibration-proof angle grinder for abrasive grinding.

Rated power consumption, W: 2600
Maximum disc Ø, mm: 230
Grinding wheel rotation frequency at idle speed, rpm: 6500
Speed ​​control: not
Weight, kg: 6.2

The angle grinder is a useful tool in any household. It is irreplaceable when it is necessary to cut various hard materials, as well as their grinding. Particularly relevant are models of an angle grinder with speed control and smooth descent, the price of which is quite affordable. A smooth descent helps to avoid jerking and also to reduce peak loads on the grid at the start. The rpm control helps to select the correct rpm depending on the type of disc. It will not be difficult to buy an angle grinder with speed control and smooth descent.

Tips for choosing

The variable speed angle grinder is one of the most popular and widely used tools. Since this tool is represented by different modifications, it is difficult to make the right choice in favor of this or that device. The first step is to decide how the device will be used for domestic or professional purposes. In the event that infrequent and simple work is planned, then a small low-speed machine will do. For the simultaneous implementation of high-quality cutting and grinding of the material, it is best to opt for professional models.

In addition, it is worth paying attention to the following characteristics of the device:

  • performance:
  • minimum and maximum number of revolutions;
  • additional functions;
  • disk parameters that can be used with the instrument.

An important criterion when choosing is the frequency of operation of the device. For constant and intensive work, it is necessary to buy models in which the outer case is made of durable metal and supplemented with brass inserts. When installing the pipeline, it is advisable to use devices with the maximum level of protection against water and dirt.

What is the adjustment for??

The quality of cutting and grinding of the material directly depends on the set speed of rotation in the angle grinder. Since hard and thick workpieces lend themselves well to cutting at maximum speeds, and aluminum, on the contrary, can melt when heated, then when working with them, the speed of rotation of the disk should be adjusted. Control of operating modes is provided only in models equipped with a special controller. This function is useful and used in several cases.

  • When processing stone. This material is well cut and grinded at low speeds; for each type of stone, its own disc speed is selected separately.
  • For finishing delicate surfaces that require careful handling. At high speeds, such products can deteriorate.
  • When replacing one circle size with another. In this case, a speed adjustment is needed.
  • When using in the work of crowns and discs with diamond dusting. To avoid their overheating and breakage, workpieces must be processed at low speeds.

If the tool is only planned to carry out cutting operations, then there is no need for a speed controller. When used universally, the angle grinder is irreplaceable. The speed control system in the angle grinder is represented by integrated microcircuits. They are reliable in use, function with a soft starter and a tuned module.

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Models and their characteristics

Today, angular grinders equipped with speed control are in great demand among craftsmen. This type of tool is well suited for cutting, polishing and grinding workpieces. The construction market is represented by an angle grinder manufactured by both domestic and foreign companies. Models from several brands have proven themselves well.

  • Bosch GWS 850 CE. This device is lightweight for easy handling. The machine has a power of 850W and is good for polishing marble and granite The complete set of the tool includes a disc speed regulator with six positions. The minimum speed of revolutions is 2800, the maximum is 11000 per minute, a special nozzle designed for high speed is used for processing wood with a machine. The manufacturer additionally equips the device with a handle, a wrench, discs and washers for attaching nozzles.
  • Makita GA5030. This is the lightest grinder (weighs 2 kg) and is designed for simple household work. With the device, you can easily handle cutting, grinding and polishing various materials. Thanks to the additional handle, the workflow is greatly simplified, this model can accommodate discs with a diameter of 115 and 125 mm. The tool has a power of 1400 W, thanks to the speed control it is classified as a professional model. In addition, the angle grinder has a switch-on lock, a speed stabilization system, in order to protect the device from overheating, it is recommended to switch it off periodically during intensive work.
  • Metabo WEV 10-125 Quick. This modification is produced with the ability to change the speed and maintain a power of 1200 W, the design provides an electronic engine overload protection system. The speed of rotation of the cutting wheel automatically changes depending on the type of work and is fixed at variable loads. Of all the 125 mm cars produced, this model is the best, it has a large number of revolutions and adjustable speeds. The angle grinder also has a safety clutch and replaceable brushes that turn off when the power supply voltage drops. In addition, the manufacturer has supplemented the tool with an overheating indicator, a stabilizer and a long cable.

The Hitachi G13SS modification can complete the review of the popular variable speed angle grinder. Due to its high power indicators and the possibility of using it with discs with a diameter of 150 and 230 mm, it occupies a high rating among the types of this equipment. The device is perfect for both renovation and construction work. The device can cut metal workpieces and grind parts from different materials. A distinctive feature of the device is a narrow grip and low weight, which makes it comfortable to work.

angle grinder with speed control: models, characteristics, subtleties of choice

  • Features:
  • What is the adjustment for??
  • Advantages and disadvantages
  • Models and their characteristics
  • Tips for choosing
  • How to use?

Every master has at hand such a reliable tool as an angle grinder. With the help of this device, you can not only perform high-quality cutting of material, sand the surface, but also sharpen kitchen knives. Since certain types of work require minimal rotation of the disc, it is recommended to purchase a device with a speed control.

Features:

The variable speed angle grinder is a versatile and multifunctional tool that makes it easy to tackle any task in construction and renovation. The main difference between such an angle grinder is the ability to independently set the speed of rotation of the disk, depending on the type of material being processed. Manufacturers produce a device with an electric motor, the power of which can range from 500 to 1500 W. For cutting workpieces, you can choose machines with an average performance of 800 W, but if you plan to carry out grinding, then it is recommended to give preference to more powerful models, since the area of ​​contact with the surface of the material being processed is larger in this case.

The angle grinder with speed control is an absolutely safe device to use, since all models are equipped with a full range of protective systems that prevent injury. Let’s list the main.

  • Soft start device. It is responsible for the smooth operation of the tool after pressing the start button. This device can also act as an inrush current limiter, which extends the life of the device.
  • Safety clutch. In the event that, when processing the material, the disc of the angle grinder begins to “bite” or wedge, this device starts an emergency stop.
  • Emergency brake. When machining hard material, the tool can twist and pull out of the hand. The brake helps to stop the rotation of the disc in 3 seconds.
  • Coil impregnation with a special compound. Since cutting and grinding of the material is accompanied by the appearance of abrasive dust, its penetration into the device is prevented by additional processing of the coil with a protective layer. This avoids short circuit problems.
  • Heat dissipating slots. Protect the device from overheating during intensive work.
  • Balancing system. The circles of the machine may be ground unevenly, after which trembling and beating of the machine may occur during the processing of workpieces. Special automatic balancing helps to smooth the work.
  • Overload fuse. When the cutting part heats up to a temperature above 160 degrees, the automatic system is triggered, and the rotation speed of the disc first decreases to 200 rpm, then completely stops.
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angle grinders with speed control weigh from 2 to 5 kg, their performance depends on the diameter of the disc and the number of revolutions. Mini-models are very popular among craftsmen, which are suitable for working with 115 and 125 mm wheels. Their speed ranges from 10,000 to 11,000 rpm. The 115mm disc angle grinder is generally used for cutting material up to 28mm thick and is well suited for sanding wood, tiles, porcelain and glass. Devices with 125 mm discs are considered the most popular, as they perfectly cope with grinding the surface of any material and cutting parts with a thickness of 30 mm. If it is necessary to cut and grind steel pipes, bricks and concrete, then it is recommended to use a device with a circle of 150 mm, while metal processing should be carried out at high speeds, and stone at lower speeds.

The attachment of the cutting disc to an angle grinder with speed control is carried out using a spindle stopper and a protective key, in some models there is also a self-clamping system. Additionally, manufacturers also equip the tool with a casing that protects the craftsman from dust, sparks in the eyes and breaking the circle on the go.

Advantages and disadvantages

Angle grinders with speed control are presented on the construction market in a huge range. Depending on the design features and technical characteristics, they can have both pros and cons. So, household models are compact and lightweight, but their functionality is limited. In such devices, productivity is also reduced, during operation they quickly overheat and require constant stops.

As for professional tools, they are very powerful and endowed with additional functions that allow them to be used for a long time without overheating the mechanism. These angle grinders are of excellent quality, easy to operate, and are designed for both cutting and grinding workpieces. The disadvantages of these models are the high price and high weight, since the frame of the device and additional components are made of durable material.

The main advantage of an angle grinder with speed control, regardless of their modification, is the ability to set a certain operating mode. Thanks to this, the device becomes multifunctional and allows processing of various materials.

How to use?

Despite the fact that all models of the variable speed angle grinder serve flawlessly, they still require proper care and operation. Therefore, it is periodically necessary to replace the working attachments and contact brushes, add oil to the gearbox and clean the engine compartment from dirt. In addition, a technical check of the instrument is also provided; it should be carried out at least once a month.

When replacing the disks, the device must be turned off, the gearbox must be locked with the button, then the old nozzle must be removed and a new one must be installed, pressing it tightly with a nut. Filling with oil is simple: to do this, remove the gearbox cover, having previously unscrewed the mounting bolts. As for cleaning the case from dust, it is carried out using a vacuum cleaner.

Work with an angle grinder must be carried out in accordance with all safety regulations. The technician must wear protective gloves, goggles or a face shield. Do not start cutting material with a broken or cracked blade as it could cause injury. Grinding with a cut-off wheel is also not allowed, and cutting with a stripping.

For cutting and polishing various materials, a certain speed of rotation of the disc is required, it can be adjusted using a special automatic system, which is controlled on the body by moving a lever. Thus, the revs can be easily decreased or increased. In addition, you can reduce the speed using large diameter discs.

For information on how to correctly adjust the speed of an angle grinder with your own hands, see the next video.

Proxxon Battery-Powered Angle Grinder LHW-A. Product Overview

As the owners of the tool note, it contains almost all modern technological solutions for the “angle grinder”. In this list, users highlight the possibility of stable speed support under high load, effective vibration damping, semi-automatic tool change, etc. True, the cost at which the Makita angle grinder with speed control in the WEA 17 version is available on the Russian market is also impressive. 125. For it you will have to pay the amount of 11-12 thousand.

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In the segment of angle grinders (angle grinder) today you can find models for a variety of tasks. Large manufacturers of the level of “Bosch” and “Makita” release modifications with effective functionality and ergonomic means of setting the operating parameters. One of the latest and most successful optional additions to this kind of technology is the adjustment of the rotational speed of the disk. Models with this feature are distinguished by their versatility in use and increased convenience for the operator. At the same time, the variable speed angle grinder is presented in different versions, so before buying it is worthwhile to familiarize yourself with the market offers in advance.

As for the revolutions themselves, the range from 2.8 to 11 thousand rpm makes the model almost universal in terms of domestic use. Although the manufacturer himself positions the angle grinder with Bosch speed control in the GWS 850 version as a professional one, experts still do not recommend purchasing it for solving complex tasks that require high power and tool endurance.

Tool characteristics

The implementation of the speed control system largely depends on two parameters. the diameter of the working disc and the power of the tool. As for the sizes of nozzles, they vary from 115 to 180 mm. A typical model of an angle grinder 125 with speed control allows you to work at a frequency of 3 to 10 thousand rpm. But as the diameter of the disc increases, the corridor of adjustment of the “angle grinder” in terms of revolutions is also reduced. For example, equipment equipped with 180-mm discs rarely surpasses the 8 thousand rpm limit. Another thing is that the power potential in the form of power can maintain this level.

Harbor Freight Tools router speed control

In household models, most often the power does not exceed 1500 watts. Typically, this category is represented by 1200 W units designed to work with small format discs. This can be the same speed-controlled 125 angle grinder, which allows you to shallow stone, cut thin metal, and gently sand wood. productive equipment with a capacity of about 3000 W is not only equipped with large disks, but also characterized by high efficiency. up to 5 hours a day with short breaks.

Features of models with speed control

In contrast to traditional models without the possibility of adjusting the speed of rotation of the cutting element, such an “angle grinder” allows a more accurate selection of operating parameters. In particular, the variable speed angle grinder is effective when you need to serve materials of different qualities in the same work area. So, in working with metal, the operator uses a frequency in the range of 2-3 thousand rpm, and the stone is optimally ground and cut at a speed of 7 thousand rpm.

At the same time, it is not always the highest frequency setting limit that testifies to the high quality of the angle grinder. For example, an angle grinder with speed control in the range of 2-6 thousand rpm can also be effective in wood and plastic processing. Even manufacturers do not recommend adjusting the malleable material due to the negative impact on the work equipment.

The functionality of the power tool and the options available are those characteristics that buyers first look at. But, not all of the proposed technologies are really useful in practical application. An example of the effective use of additional options is just shown by an angle grinder with speed control. Reviews of such machines note that the ability to adjust the rotational speed of the disk not only saves time on performing work operations, but also improves the quality of the result. Another issue is that different models provide their own range of adjustments, suitable for the corresponding set of operations. Therefore, in addition to the very possibility of adjusting the speed when choosing an “angle grinder”, it is also important to take into account the engine power and the maximum disc diameter. the range over which the operator can choose the optimal operating frequency depends on these parameters.