TOP 12 best grinding machines of different types: rating + tips on which grinding machine to choose

Craftsmen engaged in wood processing, as well as those who repair wooden floors, cannot do without a special tool, one of which is a grinder. Such equipment will not be superfluous in the workshop of a private home - it will help renew the surface of old wood, remove varnish from furniture surfaces, clean metal from rust, and much more. Therefore, those who purchase this instrument for the first time inevitably have a question: wood sander: which one to choose? However, to decide on the choice of device, it is worth considering several models from different manufacturers.

Wood sander: which one to choose?

Grinding machines are divided into orbital (eccentric), belt, vibrating (surface grinding) and brush. Each of the devices has its own specific functionality, ranging from rough initial processing to final fine grinding of surfaces to perfect smoothness. For those who plan to work with wood products professionally, it is best to have several tools with different functions. Next, PSMs will be presented with their advantages and disadvantages, the list of which was compiled based on reviews from real users.

TOP best grinding machines

Photo	Name	Rating	Price
TOP 4 belt sanders
#1		Hitachi SB8V2	⭐ 4.8 / 5	Find out the price
#2		BOSCH PBS 75 AE	⭐ 4.75 / 5 3 - votes	Find out the price
#3		Bort BBS-801N	⭐ 4.75 / 5 2 - votes	Find out the price
#4		Makita 9910	⭐ 4.5 / 5	Find out the price
TOP 4 surface grinders
#1		Hammer PSM 220 C	⭐ 4.95 / 5 2 - votes	Find out the price
#2		Interskol PShM-32/130	⭐ 4.85 / 5 2 - votes	Find out the price
#3		BOSCH PSM 200 AES	⭐ 4.8 / 5 1 - voice	Find out the price
#4		Makita BO3	⭐ 4.6 / 5 1 - voice	Find out the price
TOP 4 eccentric sanders
#1		DeWALT DWE6423	⭐ 4.9 / 5 10 — votes	Find out the price
#2		Rupes ER 05TE	⭐ 4.8 / 5 3 - votes	Find out the price
#3		Makita BO6040	⭐ 4.6 / 5 2 - votes	Find out the price
#4		Makita BO5031	⭐ 4.5 / 5 5 — votes	Find out the price

Which sander did you choose?

Take the survey

Makita 9741

at a price of RUB 25,310.

The low bristle brush included in the basic configuration of the Makita 9741 model shows good results when processing lumber from different types of wood, not only because of the special polymer bristles. Thanks to an acceptable combination of power and the tool’s own weight, quality will be present when working with each (appropriate for purpose) consumable.

Simple design
belt drive,
low center of gravity,
durable and comfortable handles

The tools do not leave even professional carpenters indifferent.
After all, comparing the predisposition of the 9741 model to intensive use, and the small volumes of materials that need texture cleaning (even in workshops), we can confidently speak about a fairly long service life of the brush grinding tool. Main technical characteristics of Makita 9741

Characteristics	Values
Brush dimensions (D-diameter, L-length), mm	D-100, L-120
Brush rotation speed rpm min	3500
Power, W	860
Model options	Smooth start and key lock Adjustable front wheel stop Brush niche with a hole for organizing forced dust removal
Additional equipment	Hex keys. Connection pipe for vacuum cleaner. Sanding brush with nylon bristles.
Weight, kg	4.2
Development/production	Japan / Japan, USA, Germany, China
Cost, rub.	25310

Watch a short video review of the features and configuration of the Makita 9741 model:

TOP 4 belt sanders

Belt models of machines are used for rough grinding, for removing thick layers and reliefs from large surfaces, as well as for cleaning metal products from rust.

#4. Makita 9910

Makita 9910
LSM Makita 9910 is lightweight and also has low power, but despite this, it easily performs the tasks of cleaning varnish, sanding and removing shallow irregularities. The speed of the machine can be adjusted. In addition, the device is equipped with a comfortable handle, an automatic dust collector and a convenient, simple mechanism for tensioning the tape. The simplicity of the design does not negatively affect the results, provided that the manufacturer's recommendations are followed and adjustments are made correctly.

Characteristics of the Makita 9910 LBM:

type - tape;
power - 650 W;
abrasive belt width - 76 mm;
abrasive belt length - 457 mm;
Max. movement speed - 270 m/min;
operation of the device - from the network;
weight - 2.7 kg;
connection cable length - 3000 mm;
complete set - dust collector and sanding belt;
device length - 262 mm;
height - 130 mm;
warranty - 1 year.

pros

affordable price;
reliability, according to user reviews, the device serves regularly for 5-12 years;
high-quality performance of work;
light weight;
easy to replace the tape;
comfortable handle;
The belt is centered automatically.

Minuses

lack of tape rotation speed regulator;
insufficient quality dust collector;
the vacuum cleaner is difficult to clean;
rapid belt wear;
lack of dust bin full indicator.

Reviews and prices for the Makita 9910 grinder

#3. Bort BBS-801N

Bort BBS-801N
Bort BBS-801N can be called a budget option for a blade grinder, designed for performing primary processing of large areas of wooden products. The model is equipped with an adjustable handle, which increases the comfort of work. The speed of the belt is also adjustable, so you can choose a convenient mode for cleaning wood, metal or plastic. The machine has the function of processing cavities and recesses up to 80 mm. The device has a powerful motor, as well as a fixed start key, but despite this, it is not intended for long-term operation:

after working for half an hour, the machine needs a break for 10-15 minutes;
air ducts need to be blown out;
periodic maintenance - cleaning and, if necessary, lubrication of individual parts.

In a home workshop, subject to the manufacturer's recommendations, Bort BBS-801N will serve without fail for a long time.

Main characteristics:

type - tape;
power - 800 W;
abrasive belt width - 75 mm;
abrasive belt length - 457 mm;
Max. belt speed - 260 m/min;
operation of the device - from the network;
machine weight - 3.1 kg;
connection cable length - 3000 mm;
equipment - spare brushes, dust container and abrasive belt (3 pcs.);
warranty - 730 days.

pros

affordable price;
possibility of fixing on the table;
ability to select speed;
high power;
easy to replace the tape;
comfortable handle.

Minuses

speed can spontaneously increase;
The vacuum cleaner is not powerful enough, some of the dust remains on the table;
high noise level (98.4 dB);
The tape is weakly stretched and fixed, and can sometimes fly off.

Bort BBS-801N

#2. BOSCH PBS 75 AE

BOSCH PBS 75 AE
The Bosch PBS 75 AE 06032A1120 grinder has high efficiency and is used for grinding surfaces made of various materials. The tool starts working smoothly thanks to the presence of a function that limits the starting current. The ability to adjust the belt movement within the range of 200-350 m/min allows you to make precise settings for cleaning or grinding a specific type of surface. The device has a lever mechanism for securing the tape, which allows you to quickly and conveniently replace it. The presence of a microfiltration system reduces dust formation. The convenient removable handle allows you to comfortably perform the necessary work.

Makita 9910 Specifications:

type - tape;
power - 750 W;
abrasive belt width - 75 mm;
abrasive belt length - 533 mm;
Max. movement speed - 350 m/min;
operation of the device - from the network;
machine weight - 3.5 kg;
connection cable length - 3000 mm;
complete set - dust collector and tape;
warranty - 2 years.

pros

presence of a microfiltration system;
reliability;
the ability to perform large volumes of work without interruption;
grinding quality;
comfortable handle.

Minuses

high price;
heavy weight.

BOSCH PBS 75 AE

#1. Hitachi SB8V2

Hitachi SB8V2
The Hitachi SB8V2 grinder is used for leveling and grinding various surfaces, including their removal of varnish layers. The handle has a rubber coating and does not slip during operation, which provides a comfortable and reliable grip. The machine operates quietly, so it is comfortable to work with it for a long time in residential areas. The front of the tool has a transparent cover that covers the moving belt, but does not interfere with viewing the area being treated. The movement of the belt is smoothly adjustable.

Characteristics of the Hitachi SB8V2 blade:

type - tape;
power - 1020 W;
abrasive belt width - 76 mm;
abrasive belt length - 533 mm;
Max. movement speed - 450 m/min;
operation of the device - from the network;
machine weight - 4.3 kg;
complete set - dust collector and tape;
warranty - period not specified.

pros

high power;
reliability;
affordable price;
the ability to perform large volumes of work without interruption;
grinding quality;
comfortable handle.

Minuses

heavy weight, which complicates the processing of vertical surfaces;
lack of balance, falls on one side during work;
The cord is too tight and short.

Hitachi SB8V2

Bison ushm 125-950

at prices starting from RUB 2,020.

By equipping the Zubr Ushm 125-950 model with a thick (grinding) disc, you can:

clean weld seams from slag
get rid of pockets of corrosion
grind large burrs on metal and irregularities on stone.

Using thin (cutting) wheels, this tool can quickly cut sheet and shaped metal products.

The ability to install an additional handle on the left or right side of the gearbox housing and fix the protective casing in any position makes working with the tool convenient and safe in different situations.
But the most important feature of the 125-950 model is that there is no second such angle grinder (with similar characteristics) for non-intensive use on the domestic market. Main technical characteristics of Bison ushm 125-950

Characteristics	Values
Disc, mm	125
Disk rotation speed, rpm min	11000
Power, W	950
Model options	Simple fixation of the start key Spindle lock key Safety guard with eccentric clamp
Additional equipment	Special wrench for the fixing nut. Hexagon for the adjusting screw for securing the protective casing. Additional handle.
Weight, kg	2.6
Development/production	Russia, Russia
Cost, rub.	2020

Watch a video review of the model Zubr ushm 125-950:

TOP-4 surface grinding machines (PSHM)

Surface grinding (vibrating) devices are intended for cleaning planes of different sizes; they are suitable for grinding and cleaning wood, plastic and metal, and even plastered surfaces. PMSH can have different shapes of soles, which are used not only for free areas, but also for hard-to-reach areas.

#4. Makita BO3

Makita BO3 surface grinder
PShM Makita BO3 is equipped with an effective system for removing dust from the surface being sanded and adjusting the oscillation frequency, so it is often chosen by professionals. However, this model is not suitable for sanding internal corners, narrow areas, or raised surfaces. Makita BO3 is designed for cleaning wide surfaces made of different materials, while the machine is not limited in time and volume of work.

Characteristics of Interskol Makita BO3:

type - vibration;
power - 190 W;
sanding sheet width - 93 mm;
abrasive sheet length - 228 mm;
Max. oscillation speed - 11000 kol/min;
method of fixing the nozzle - clamps;
operation of the device - from the network;
machine weight - 1.6 kg;
equipment - dust collector;
warranty - 1 year.

pros

convenient attachment of attachments;
quiet operation of the machine;
good vibration range;
collects dust well;
affordable price;
grinding quality;
availability of connection to a vacuum cleaner;
adjustment of oscillation speed.

Minuses

low productivity;
The device is more suitable for finishing sanding rather than rough cleaning of surfaces.

Makita BO3

#3. BOSCH PSM 200 AES

Surface grinder BOSCH PSM 200 AES
PShM BOSCH PSM 200 AES is a universal device, the set of which includes soles of different shapes and sizes (rectangular and deltoid). Therefore, the machine can be used for large surfaces, as well as hard-to-reach areas. Replacement of soles is carried out without the use of tools. The rear part of the sole is fixed, and the delta-shaped part of the sole has the ability to rotate.

Characteristics of BOSCH PSM 200 AES:

type of tool - vibrating;
power - 200 W;
abrasive sheet width - 92 mm;
abrasive sheet length - 182 mm;
Max. oscillation frequency - 26,000 kol/min;
the method of fixing the nozzle is Velcro;
operation of the device - from the network;
machine weight - 1.4 kg;
The kit includes a dust collector;
warranty - 1 year.

pros

power;
possibility of grinding smooth and embossed surfaces;
convenient attachment of attachments;
grinding quality;
comfortable handle;
availability of connection to a vacuum cleaner;
adjustment of oscillation speed.

Minuses

inflated cost of the device and consumables;
short cord.

Reviews and prices for the BOSCH PSM 200 AES grinding machine

#2. Interskol PShM-32/130

Delta sander Interskol PShM-32/130
Interskol PShM-32/130 is a compact device equipped with a delta-shaped sole, which allows for fine grinding work in hard-to-reach areas and embossed surfaces, for example, paneled doors. High results of work are ensured due to low vibration frequencies of the sole. To achieve professional quality, it is necessary to use various abrasive consumable attachments with grain of different fractions. For example, if it is necessary to remove one layer of coating, then a consumable with a coarse grain is installed.

To process relief surfaces, you will need fine-grained sandpaper, and for sanding varnished products, a soft nozzle is suitable. The consumables are fixed to the sole using Velcro, which holds them securely during the work. If a nozzle of the desired shape is not found, it can be easily cut out from a sheet of sandpaper equipped with a felt layer. To ensure high-quality dust removal during grinding, holes should be made in the cut out attachments. It is very important not to overload the tool with heavy loads and clean the holes with compressed air upon completion of work.

Characteristics of Interskol PShM-32/130:

type - vibration (delta);
power - 130 W;
abrasive sheet width - 80 mm;
abrasive sheet length - 140 mm;
Max. oscillation speed - 11000 kol/min;
the method of fixing the nozzle is Velcro;
operation of the device - from the network;
machine weight - 0.95 kg;
The kit includes a dust bag and sanding belt (2 pcs.);
warranty - 2 years.

pros

collects dust well;
reliability;
light weight;
affordable price;
the ability to grind relief and hard-to-reach areas of surfaces;
grinding quality;
long periods of work without interruption.

Minuses

you have to cut out the nozzles yourself;
low-quality dust collection bag.

Interskol PShM-32/130

#1. Hammer PSM 220 C

Surface grinder Hammer PSM 220 C
PShM Hammer PSM 220 C is equipped with a reliable metal platform for attaching attachments, which has holes for dust removal. The vibration frequency of the metal sole is adjusted depending on the type of material being processed. The manufacturer included a special hole punch with the device for making holes in abrasive nozzles. The machine is equipped with a plastic dust collector, which is convenient to clean from dirt. The comfortable handle allows you to perform long-term work without straining your hand.

Characteristics of Hammer PSM 220 C:

type of tool - vibrating;
power - 220 W;
sanding sheet width - 90 mm;
abrasive sheet length - 187 mm;
Max. oscillation speed - 11000 kol/min;
method of fixing the nozzle - clamps;
operation of the device - from the network;
machine weight - 1.5 kg;
The kit includes a dust collector, hole punch and abrasive attachments;
warranty - period not specified.

pros

light weight;
good power;
convenient attachment of attachments;
grinding quality;
comfortable handle;
does not overheat during operation;
The plastic dust container is easy to clean;
adjustment of oscillation speed.

Minuses

There is no information about the disadvantages.

Hammer PSM 220 C

AEG EX 150 ES

at prices starting from RUB 8,683.

AEG EX 150 ES is one of the universal sanders that has:

vibration intensity adjustment,
2 vibration amplitude options,
the ability to connect a bag or vacuum cleaner to the dust removal system;

Simplicity and reliability in use thanks to the Velcro abrasive fastening, durable plastic and molded base of the sole, as well as dust-proof controls. When an amateur simply uses a tool for a long time and gets an acceptable result, then professionals use the potential consciously, because they know that:

“strangling” this grinder is not easy (the stabilization system instantly recognizes even insignificant pressure and regulates engine speed, preventing equipment wear);
smooth start, sole brake eliminates damage to the surface being treated
Properly implemented dust removal prevents premature wear of the working parts of the tool.

Main technical characteristics of AEG EX 150 ES

Characteristics	Values
Platform, mm	D-150
Amplitude / Oscillation frequency, mm / count. in a minute	3.2-6.4 / 8000-20000
Rotation speed at idle, rev. min.	4000-10000
Power, W	440
Model options	Smooth start Speed controller Stabilization of operation with increasing load Switching the amplitude of the eccentric stroke
Additional equipment	Additional handle, 3 sanding sheets
Weight, kg	2.8
Development/production	Germany / Germany, China
Cost, rub.	8683

Watch a video review revealing all the features of the AEG EX 150 ES:

TOP 4 eccentric sanders

Eccentric machines for grinding surfaces are used to prepare them for painting, applying subsequent layers of decorative coating, that is, intermediate treatments, as well as polishing wood, plastic and metal.

#4. Makita BO5031

Eccentric sander Makita BO5031
ESHM Makita BO5031 is a professional tool designed for durability and quality of work. The device has low weight, low vibration, convenient location of control elements on the body, smooth start-up, and also provides safety for the user in the event of a decrease in network voltage.

Characteristics of EShM Makita BO5031:

machine type - eccentric;
power - 300 W;
diameter - 125 mm;
Max. rotation speed - 12000 rpm;
the method of fixing the nozzle is Velcro;
The device is powered from the mains;
machine weight - 1.3 kg;
The kit includes a dust collector and an abrasive attachment;
warranty - 1 year.

pros

does not overheat;
good build quality;
presence of a case;
convenient dust collector, easy to remove, clean and install;
affordable price;
high power;
convenient attachment of attachments;
ease of use;
speed adjustment.

Minuses

heavy weight;
lack of warranty card;
uneven grinding;
short cord;
The fabric dust collector is not sealed enough.

Makita BO5031

#3. Makita BO6040

Eccentric sander Makita BO6040
ESHM Makita BO6040 is a universal tool, as it includes two types of grinding, a speed stabilization function and the ability to change the speed mode of rotation of the sole. Using the machine, you can perform rough surface cleaning, as well as fine grinding and polishing of materials such as metal, plastic and wood. This model of the device is connected to a vacuum cleaner, into which dust generated when cleaning surfaces is removed. The tool is well balanced and equipped with a rubberized handle, which makes long-term work easier and more comfortable.

Characteristics of EShM Makita BO6040:

machine type - eccentric;
power - 750 W;
diameter - 150 mm;
Max. rotation speed - 5800 rpm;
the method of fixing the nozzle is Velcro;
The device is powered from the mains;
machine weight - 2.7 kg;
The kit includes a case;
warranty - 1 year.

pros

low noise level;
affordable price;
high power;
good quality of work on cleaning smooth surfaces;
convenient attachment of attachments;
ease of use;
reliability;
speed adjustment.

Minuses

heavy weight;
does not clean heterogeneous, uneven surfaces well;
does not remove dust well.

Makita BO6040

#2. Rupes ER 05TE

Rupes ER 05TE eccentric sander
EShM Rupes ER 05TE is perfect for working on wood, as well as for car body repairs. The tool has light weight, a comfortable vibration amplitude, a powerful engine, a high-quality system for removing dust waste, and also cooling the engine. The rotation speed is adjustable, the body is properly balanced, which allows you to use the device not only at home, but also as a professional tool.

Characteristics of EShM Rupes ER 05TE:

machine type - eccentric;
power - 450 W;
diameter - 150 mm;
Max. rotation speed - 10000 rpm;
the method of fixing the nozzle is Velcro;
The device is powered from the mains;
machine weight - 2.1 kg;
warranty - period not specified.

pros

excellent build quality;
good power;
convenient fastening of nozzles and dust collector;
The dust collector reliably holds dust;
ease of use;
reliability;
does not overheat during operation;
low vibration does not interfere with work;
speed adjustment.

Minuses

heavy weight.

Rupes ER 05TE

#1. DeWALT DWE6423

Random orbital sander DeWALT DWE6423
ESHM DeWALT DWE6423 is equipped with a round sole with a diameter of 125 mm. The device has high power, which is necessary when processing surfaces with high hardness. The speed of the car is controlled by an electronic system. The device comes with a dust collector, but it can also be connected to a regular vacuum cleaner. The device power button can be locked, which increases the level of operational safety. The comfortable handle facilitates the work process, since the hand is not under constant tension.

Characteristics of EShM DeWALT DWE6423:

type - eccentric;
power - 280 W;
diameter - 125 mm;
Max. rotation speed - 12000 rpm;
the method of fixing the nozzle is Velcro;
operation of the device - from the network;
weight - 1.28 kg;
complete set - abrasive attachments and dust collector;
warranty - 1.5 years.

pros

light weight;
good power;
convenient fastening of nozzles and dust collector;
The dust collector reliably holds dust;
ease of use;
grinding quality;
long and flexible cord (5000 mm);
does not overheat during operation;
low vibration does not interfere with work;
speed adjustment.

Minuses

lack of a case for storing tools;
inconvenient switch button;
lack of warranty card and instructions in Russian.

Reviews and prices for the DeWALT DWE6423 grinder

Interskol UShM-230/2100M

at a price of 5,340 rub.

The declared potential and impressive appearance of the 230/2100 model indicate the advisability of using heavy angle grinders only by professional builders. This CMM is capable of:

Cleaning deep cuts, from 6 mm wide
rough grinding of planes and welded joints
sawing metal structures and chipping concrete walls,

The main handle, which rotates (with locking) by 1800, allows you to work without reducing productivity in any position. The relatively low spindle speed does not affect the quality of work. It is designed in such a way that the optimal speed of movement of the abrasive edge (no more than 80 m/s) is maintained at the edges of the installed disk (D 230 mm).

Protection against accidental start-up provides an additional level of safety when operating heavy equipment.
Main technical characteristics of Interskol UShM-230/2100M

Characteristics	Values
Disc, mm	230
Disk rotation speed, rpm min	6500
Power, W	2100
Model options	Smooth start Protection against accidental activation Rotation of the main handle around the longitudinal axis of the tool Quick access to motor brushes
Additional equipment	Additional handle. Wrench for the nut holding the disc.
Weight, kg	5.3
Development/production	Russia, Russia
Cost, rub.	5135

View an overview of the capabilities of the Interskol UShM-230/2100M model:

Criteria for selecting a grinding machine

As you can see from the models presented above, they differ from each other not only in their design, but also in their characteristics. Therefore, when choosing a tool, you should pay attention to the following factors.

Criterion	Description
Application area	The first thing you need to do is decide for what purpose you are purchasing the tool. If you plan to work professionally with a machine, you may have to buy different types.
Tool power	This characteristic is also selected depending on the intensity and nature of the work.
Balancing	It is very important that the machine is properly balanced, otherwise it will fall on one side or the other. However, you can check the balancing only during work or by carefully studying user reviews for a specific model.
Vibration level	If the tool vibrates strongly, it will be very difficult to work with it, and the quality of cleaning or grinding will be poor. This characteristic can also only be verified in practice or through reviews.
Noise level	You should not choose a device with a high noise level, since it will be difficult to use it in a residential area for a long time.
Comfortable grip	This factor is important if the tool will be used for a long time. Your hand will get tired quickly if the handle is slippery or has an awkward shape.

When choosing a grinding machine, you need to take into account several parameters at once.
If you don’t have the opportunity to understand the intricacies of choosing a grinding machine, you can purchase any model from our rating, because only the best tools are included in it. You can be sure of the high quality of the grinder and that it will serve for a long time and faithfully.

Sturm! AG1014P

at prices starting from RUB 8,209.

A powerful motor and a relatively low brush rotation speed characterize the impressive potential of the most inexpensive of the popular Sturm CMMs! AG1014P. The purpose of such equipment is for rough cleaning or gentle grinding (depending on the consumables used) of textured (wooden, metal and plastic) surfaces. But this model is most often used for brushing (aging) wood.

Locking the start button in the pressed position,
convenient additional handle above the brush guard,
rotation speed adjustment,
Impressive torque from a powerful engine.

This set of functions in affordable equipment arouses a certain interest among those who like to create non-trivial products with their own hands.
Main technical characteristics of Sturm! AG1014P

Characteristics	Values
Brush dimensions (D-diameter, L-length), mm	D-120, L-100
Brush rotation speed rpm min	3000
Power, W	1400
Model options	Smooth start Fixing the start button Speed adjustment Spindle lock key Screw caps providing access to the motor brushes Protective cover
Additional equipment	Side handle with bracket. Additional set of motor brushes. A set of necessary keys. Sanding brush
Weight, kg	3.35
Development/production	Russia / China
Cost, rub.	8209

Watch a video review of the capabilities and configuration of the Sturm model! AG1014P:

Vote

Which sander did you choose?

Hitachi SB8V2

0.00 % ( 0 )

BOSCH PBS 75 AE

9.68 % ( 3 )

Bort BBS-801N

6.45 % ( 2 )

Makita 9910

0.00 % ( 0 )

Hammer PSM 220 C

6.45 % ( 2 )

Interskol PShM-32/130

6.45 % ( 2 )

BOSCH PSM 200 AES

3.23 % ( 1 )

Makita BO3

3.23 % ( 1 )

DeWALT DWE6423

32.26 % ( 10 )

Rupes ER 05TE

9.68 % ( 3 )

Makita BO6040

6.45 % ( 2 )

Bosch GSI 14 CE

at prices starting from RUB 35,265.

The rated power of the Bosch GSI 14 CE tool allows you to count on the effective operation of the torque stabilization system. The electronics monitor changes in the drive rotation speed under uneven load and make the necessary adjustments to the operation of the low-speed electric motor. Therefore, working along the fibers, even at minimum speed, the master receives exceptionally high-quality results.

Balanced design
precision shaft rotation indicators,
the ability to quickly replace consumables without the use of tools,

have made this tool in demand among specialists who work with hardwood.
Main technical characteristics of Bosch GSI 14 CE

Characteristics	Values
Brush dimensions (D-diameter, L-length), mm	D-115, L-100
Brush rotation speed rpm min	750-3000
Power, W	1400
Model options	Replacing consumables without tools Rotation speed adjustment Electronic control of engine torque as load increases
Additional equipment	Branded case. 2 sanding sheets, 2 brushes. Additional handle.
Weight, kg	3.4
Development/production	Germany / Germany, China
Cost, rub.	35265

Watch a video describing the potential of the Bosch GSI 14 CE model:

Useful videos

Comparative analysis of three types of wood sanders:

Sanding is a mandatory procedure to give parquet a presentable appearance. With its help you can level a wooden surface, clean out scratches and cracks. Of course, grinding is not done manually, but using special equipment - grinding machines. There are a large number of similar units on the market, differing in type of design, purpose, and mode of operation. Let us outline their main technical characteristics for the optimal choice.

There are a huge number of varieties of parquet sanders, but all of them can be combined into several groups:

drum - the working surface is represented by a cylindrical shaft on which an abrasive belt (sanding paper) is installed;
belt - the working surface is formed by an abrasive belt moving between two moving shafts (rollers);
disc – grind the surface with discs (one or more);
vibrating – equipped with a vibrating working sole, which makes “troweling” movements during the grinding process;
eccentric (orbital) - the working sole simultaneously rotates and vibrates.

Each of these types of equipment solves its own problems and has operating features. Let's look at these nuances more clearly.

Types and characteristics

Wood sanders vary in design and operating principle , which determines their specific characteristics.
Taking into account the power and complexity of the configuration, they are divided into household and professional . Based on their purpose, we can distinguish devices of a universal nature and highly specialized instruments.

Corner

The most popular among home craftsmen and professionals is the angle grinder (angle grinder) , which is better known as the “grinder” . This universal tool, after the development of cutting discs, is more often used as a cutting tool, forgetting that it was originally developed for grinding work.

The operating principle is based on processing the workpiece with the edge of a rotating disk. The main design feature of an angle grinder is the location of the disk spindle (grinding or cutting) perpendicular to the electric motor shaft.

Changing the plane of rotation and transmitting torque is provided by a gearbox. For grinding and polishing, discs with a diameter of 11-13 cm of maximum width are used, and for cutting, narrow discs with a diameter of 17-24 cm are used.

The main advantage of an angle grinder is its versatility and the ability to process surfaces of any configuration . Disadvantage: small working surface area.

Tape

Processing of workpieces using a belt sander ( LSM ) is carried out with sanding (emery) paper , which is pulled onto the rollers. The principle of its operation is reminiscent of a plane - when the tool is progressively moved while pressing on the surface of the workpiece, the moving abrasive blade cuts off the top layer of wood. The depth of processing depends on the grain size of the skin and the force applied.

The LSM allows you to easily level a wooden surface by removing wood to a depth of several millimeters; process the edge, incl. round it up; remove old coating from wooden structures. It is not suitable for fine polishing. Household LShKs use a sanding element with a width ranging from 6-12 cm. The most common length of the sanding belt is 76 cm.

The advantages of the tool are a significant coverage area of the surface being processed , the ability to level and simultaneously grind rough surfaces. Disadvantages - work at high speeds leads to the appearance of defects, the impossibility of polishing the surface.

Vibrating

A vibrating or surface grinding machine ( PVM ) uses a rectangular sole as a working element. The sanding cloth is installed on this base using a special clamp or adhesive tape.

The operation of the device is based on reciprocating (oscillatory) movements of the sole, at a speed of up to 22,000 vibrations per minute, i.e. about 340 Hz. The amplitude of movement is 2-5 mm.

The degree of surface treatment depends on the grain size of the sanding paper and the amplitude of vibration of the sole. For rough processing, coarse-grained sandpaper is used, and the amplitude is maintained in the range of 3.5-5 mm. To carry out polishing, a fine-grained sanding cloth is installed, and the amplitude does not exceed 3 mm. The oscillation speed can be adjusted over a wide range.

One of the varieties of PShM is a delta grinder . Its main difference is the triangular shape of the sole. This design allows you to expand the capabilities of the tool when processing hard-to-reach elements - corners, protrusions, etc.

The advantage of the PShM is the ability to polish the surface and cover a fairly large area. The disadvantage is that the device is designed for processing flat surfaces, and it is quite difficult to process cylindrical workpieces and complex shapes efficiently.

Eccentric

An eccentric or orbital sander ( ESM ) occupies an intermediate position between a LSM and a PShM. In it, as in the case of the PShM, there is a sole on which the sanding blade is installed, but it has a round shape. An important difference is the presence of special eccentrics that provide complex movement of the sole. It rotates around an axis and performs orbital motion.

Household electric grinders can have a working element with a diameter of up to 16 cm, which provides a significant coverage area of the surface being processed. Complex motion improves machining accuracy. One drawback is the formation of a large amount of fine dust , which requires the inclusion of a special dust collector in the design. Difficulties also arise when grinding corners.

Oscillatory

The use of oscillatory technology in grinding machines is typical for new models. The principle of their operation is based on the fact that the engine performs not rotational, but oscillatory motion . The oscillation range (oscillation angle) is more than 3º, which provides an amplitude of more than 5-6 mm.

The main advantages of such models:

low dust formation with the exception of its emission in the centrifugal direction;
the ability to process complex areas ;
smooth operation;
possibility of performing deep cutting .

The capabilities of the tool are increased when using an electric motor with a power of more than 0.3 kW.