small angle grinder with speed control

Small angle grinder with speed control

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, surface grinding, but also sharpen kitchen knives. Since certain types of work require minimal disc rotation, it is recommended to purchase a device with a speed control.

Models and their characteristics

Today, angle 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 made 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. It 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 for 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 varying loads. This model is the best of all the 125 mm cars produced, it is distinguished by 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 takes 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.

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 speed, 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 correction 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.

How to control angle grinder speed || motor speed control || angle grinder speed regular

If the tool is only planned to carry out threaded 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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Which manufacturer of angle grinder is the best?

Criteria for Selecting a Good Angle Grinder

Selection Tips

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.

Additional features

A quality angle grinder has useful functions that make the work easier and prolong the life of the angle grinder. Their presence indicates the professional purpose of the tool and significantly affects the price. They are also found in a good household tool:

  • “Soft start” (start without jerking);
  • auto-shutdown of brushes in case of short-term power outages;
  • self-balancing of the disc (reduces the runout of the disc during uneven erasure, and therefore vibration in the hands);
  • the ability to fix the power button for long-term operation;
  • the ability to change the casing without tools;
  • automatic (electronic) regulation of the disk rotation speed;
  • improved dust protection of the stator and armature;
  • dust removal system (the presence of a special nozzle for connecting a construction vacuum cleaner).

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.

Selection Tips

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.

Number of handles

The convenience and safety of work depends on this parameter. The angle grinder comes in one-handed and two-handed. The first option is common among relatively light models, both household and professional. The lightweight angle grinder can be simply supported with the other hand on the body. The two-hand angle grinder is a heavy professional and semi-professional model that requires physical strength and a secure grip to work effectively and safely. It is good if the handle / handles of any angle grinder have a rubberized coating or vibration damping system.

Disc diameter

The disc is the main consumable for the angle grinder. It is he who cuts, grinds, cleans. When choosing a diameter, it is important to take into account that the “useful area” of the disc, and hence the cutting depth, is about four times less than its diameter. That is, it cuts only the extreme 1 / 3-1 / 4 of the disc. There are 5 diameters of discs:

  • 115 mm is the smallest disc. It is not suitable for main cutting due to its shallow cutting depth (less than 25 mm), but good for small jobs and grinding. There are also machines with 100 mm discs, designed exclusively for grinding and polishing, but they are narrowly specialized and are not widely used in everyday life.
  • 125 mm is the most popular disc size for a household angle grinder with a cutting depth of about 40 mm. With discs for different purposes, it allows you to cut almost all materials;
  • 150 mm is convenient for cutting concrete, brick, metal pipes;
  • 180 mm is useful for those who started repairs or construction;
  • 230 mm. discs for professional angle grinders with a cutting depth of up to 70 mm, rarely used for household needs. Generally, the larger the disc the angle grinder is designed for, the greater the weight of the tool assembly.
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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.

small, angle, grinder, speed, control

When replacing the discs, 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 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.

Models and their characteristics

Today, angle 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 made 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. It 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.
small, angle, grinder, speed, control
  • 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 for 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 varying loads. This model is the best of all the 125 mm cars produced, it is distinguished by 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 takes 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.

See also  Angle grinder attachment for cutting circles

Additional features

A quality angle grinder has useful functions that make the work easier and prolong the life of the angle grinder. Their presence indicates the professional purpose of the tool and significantly affects the price. They are also found in a good household tool:

  • “Soft start” (start without jerking);
  • auto-shutdown of brushes in case of short-term power outages;
  • self-balancing of the disc (reduces the runout of the disc during uneven erasure, and therefore vibration in the hands);
  • the ability to fix the power button for long-term operation;
  • the ability to change the casing without tools;
  • automatic (electronic) regulation of the disk rotation speed;
  • improved dust protection of the stator and armature;
  • dust removal system (the presence of a special nozzle for connecting a construction vacuum cleaner).

Hammer USM 1200 E

High-performance angle grinder for discs up to 125 mm in diameter. It is characterized by high performance, the user can easily perform both cutting and grinding work. Speed ​​control allows the angle grinder to be adjusted to suit the operator.

A feature of the grinder is the handle, which can be fixed in two positions. left or right, making it more convenient to use. Also, the spindle lock makes the unit more attractive, making it easier to change equipment.

Hammer USM 1200 E

  • Sufficient power (1200W).
  • Keeps revs well under load.
  • Spare brushes available.
  • The start button must be pressed throughout the entire operating time.
  • Rigid network wire.

Bort BWS-905-R

The compact 125 mm angle grinder that attracts attention with its low cost and high power. Light weight (1.8 kg) allows you not to be distracted by fatigue and work for a long time, without rest and respite.

The model is variable speed, you can install the spindle. The angle grinder is equipped with a protective cover, additional brushes and a handle, a key for changing discs. On the body there is a button designed to block the inclusion when accidentally pressed.

  • A light weight.
  • Convenient one-handed operation.
  • Low price.
  • Sturdy case.
  • Short network cable.
  • Heats up quickly.

BISON angle grinder-125-1100 TM3

In addition to adjusting the rotational speed of the disk, the device is equipped with a button that blocks accidental activation, as well as overload protection.

The simple way to control the speed An Angle Grinder

BISON angle grinder-125-1100 TM3

  • Good power.
  • Smooth start.
  • Convenient ergonomics.
  • 5-year warranty.
  • Tight power button.
  • Short network cable.

TOP 10 best variable speed angle grinder of customer choice

Sturm! AG9512P

Easy-to-use 125 mm angle grinder with speed control at an attractive price. It will become an indispensable assistant to its owner in performing a variety of types of work: cleaning surfaces or grinding them, trimming metal and other materials.

The tool is equipped with a detachable auxiliary handle that can be mounted on the unit body in three different positions. It also has a protective cover to prevent dust, debris and sparks from reaching the operator and spreading over long distances. The angle grinder’s turn-on lock protects all family members from injury if the button is accidentally pressed.

  • Ease of use.
  • Soft network cable.
  • Installing the handle in 3 positions.
  • Short brushes.
  • Short cord.

BOSCH GWS 850 CE

Simple and reliable angle grinder with 125 mm disc, attractive for its low cost and high performance. It is easy to cope with the processing of any surface, cutting various materials. Discs and brushes are easy to remove and install.

The angle grinder is equipped with an ergonomic grip for even easier and more comfortable operation and a protective cover to prevent spraying and sparks flying over long distances.

BOSCH GWS 850 CE

  • Small weight (1.9 kg).
  • Reliability.
  • Compact dimensions.
  • Long cord.
  • No protection against accidental activation.
  • Inconvenient casing attachment.

Metabo WEV 15-125 Quick

Reliable, functional unit. Its price may confuse the buyer a little. However, it is well worth the money spent. The user will never regret the choice made for a long time of operation.

The model is characterized by high performance due to the incredible engine power of 1550 watts. At the same time, the angle grinder fits perfectly in the hand, since it is small in size. It is easy to operate thanks to a comfortable body and an ergonomic detachable two-position handle.

Metabo WEV 15-125 Quick

small, angle, grinder, speed, control
  • Safe to use.
  • Reliability
  • Good build.
  • Long network cable (4m).
  • High price.
  • Flimsy speed control mechanism.

Angle grinder CHEAP speed controller