Overview 8 kinds of the best grinding machines: how to choose what to buy, the pros and cons, features, rating

Qualitative cutter sharpening is performed using specialized equipment - grinding machines. If ordinary kitchen knife you can still grind of emery stone, then the overall cutting tools require a different solution. Electric emery are used both in the home and small workshops and in the industry.

How to choose a grinding machine

Emery characteristics must comply with the requirements which they are subject.

Types of grinding machines

All grinding machines, depending on the conditions of use are divided into:

• household;
• professional.

Household Emery thin, have compact dimensions and are used for sharpening tools common home, such as knives, drills, planers, band saws. The duration of continuous operation often does not exceed 15 minutes, whereupon the motor begins to overheat.

For household use is advantageously chosen pattern with two operating elements in the form of parallel grinding wheels of different granularity. To extend the functional manufacturer in place of the second circle often establishes a mechanism with the sanding belt, which allows to process different width blanks.

Emery divided by purpose into:

• universal;
• narrowly focused, for example, sharpening of circular saws, drills or knives only.

The first embodiment is an apparatus with a power unit, and various additional devices permitting sharpening wide range of tools, from the usual kitchen knives, Finishing chisels and chisels. By a universal machine also includes classical emery two abrasive wheels, as they allow you to solve a wide range of tasks. Narrowly focused tools sharpen "their" tool is much better than universal. But this is offset by their limited functionality.

Dimensions

Large machines are stationary and occupy a lot of space. They consume a lot of resources, are able to cope with the large front works, noisy. To install and comfortable work space will need to have the appropriate dimensions. More comfortable under a small workshop or garage will domestic or professional model low or medium power.

Power and type of engine

Soft Materials Processing engine requires less power than the work, for example, tungsten carbide cutting elements. The more powerful engine, the longer the grinding machine will work, the higher the speed of rotation of the grinding element. Suitable for domestic use models whose capacity does not exceed 0.5 kW.

Grindstone and tape

The functionality of the machine is also influenced by the parameters of its equipment:

• Material for grinding wheels. Ordinary abrasive options are used in most cases, while diamond disks are mainly used in the processing of carbide tools, where high accuracy.
• The size of circles. They differ in outer diameter, which is usually 125-250 mm. Important is the size of the seat, which determines appropriate circle for setting a specific machine or not. This size is specified in the documentation for the device. The most common is the landing of 32 mm. Also, there are dimensions of 20 mm, 12.7 mm and 16 mm. It is important to select a widely used option to not have difficulties finding suitable consumables in the future. Thickness range affects the machining accuracy. The smaller it is, the higher the accuracy.
• Grit range. The higher it is, the more processing will be coarser. For efficient removal of the upper layer is suitable granularity 40-60 and 80-120 for final processing.
• Dimensions sanding belt (if provided). Determined by the specific design of the machine, indicated in the passport.

Security

To work with sandpaper was secure, the device must be provided with protective covers, the purpose of which - preventing scattering sparks and particles of the material. Furthermore, transparent plates are important to allow completely block the free expansion of the metal dust toward the operator. The protective elements can not guarantee complete security, so that the use of glasses required.

options

• The presence of the bath for a cooling liquid.
• Illumination workspace if it is supposed to use the machine in conditions of poor visibility.
• engine speed control. Processing of various materials requires varying the speed of rotation of the grinding wheel.
• Ability angular adjustment stops, tables and sharpening elements themselves. These options allow to choose a certain grinding angle of the cutting portion of the tools.
• Set of wheels with different grit.
• The presence of the angular drive for the "wet" processing. Since its rotation speed is low, it is suitable for those artists who do not experience high dry sharpening tools.

Build quality

Perhaps one of the most important parameters when choosing a grinding machine. Here the important external inspection prior to purchase, as well as checking the device for the presence of background noise, and the overall volume of work. Any backlash winepress reduces the accuracy of the material processing. Drills on a beating circle altogether can result in unusable state operation. For this reason, the choice should be limited to machines with the exact path of rotation of the working elements.

Machine housing must be made of durable but lightweight material. All components must be protected from the negative effects of the environment. machine assembly should not take long. This applies to mounting the grinding wheel and any attachments, such as removable stops.

Best Grinding Machine chains

brigadier GM4P - professional machine with high performance for sharpening saw chains, which is recommended for use in logging and industrial enterprises. A powerful motor provides a constant number of revolutions of the disk under a load. Among the features noted improved chain locking system, as well as quality LED-lighting the working area, allows to work in rooms with insufficient lighting. The machine is set up quickly, and the height adjustment is carried out by pressing just one button.

The engine develops 6300 rev / min, which allows you to quickly grind even long chains. Installed on the machine 104-mm discs of 3.2 mm thickness and 22.2 mm in bore diameter. Rotational drive angle is 30 °.

Characteristics

• motor power - 0.65 kW;
• Rotation speed - 6.3 thousand. rev / min;
• maximum rotation angle - 30 °;
• Disc dimensions: diameter - 104 mm, thickness - 3.2 mm;
• Weight - 3.25 kg.

pros

• use grinding discs up to 104 mm in diameter and 3.2 mm thick;
• The duration of continuous operation;
• full illumination of the working space;
• Easy height adjustment.

Minuses:

• not found.

Best grinding machine for knives

Machine ENKOR Corvette-470 designed for sharpening of knives and planer planer equipment made from high-speed steel and carbide. High accuracy due to a convenient holder and robust design. Using asynchronous motor allowed to achieve low noise and small size. Grinding Machine This model is suitable for professional use, it sets itself apart from similar small size options.

The machine is equipped with a system coolant that retains the properties of the processed material, preventing overheating of the blade of the tool. Adjusting the distance to the grinding wheel is performed conveniently pulley and loop fasteners provide resistance to base.

Characteristics

• Motor Power - 550 W;
• Engine type - asynchronous;
• type of transmission - direct;
• dressing wheel parameters: diameter - 100 mm, bore diameter - 20 mm;
• weight - 70 kg.

pros

• ease of use;
• reliable fastening of sharpened tool;
• high accuracy;
• wide angle adjustment range of sharpening;
• the use of the diamond or abrasive grinding wheel.

Minuses

• difficult to find in the sale of the grinding wheel.

Best sharpening machine for saws

Inexpensive but effective JMY8-70 machine It designed for sharpening circular saw blades made of hard metal. Processing is performed on both faces of the tool. There is also the possibility of sharpening a scythe. The tool holder is tilted in the range of 85 °. Processing accuracy is high due to the high strength of the cast base with rubber inserts, reducing noise and vibration. Sharpening angle is maintained by the use of bearings in the guide mechanisms and inclined tool holder. All adjustments are made manually.

The machine features include detailed instructions on setting up and operation, as well as adapters for planting size of the grinding wheel and additional fasteners.

Characteristics

• Motor Power - 250 W;
• number of revolutions - 2850 rev / min;
• diameter saws - from 80 mm to 700 mm;
• parameters of the grinding wheel: diameter - 125 mm;
• tilt motor on both sides: 20 °;
• slope desktop - from 30 ° to 45 °;
• weight - 33 kg.

pros

• a wide range tilting holder saws;
• high precision machining;
• low noise level and vibrations;
• simple adjustment.

Minuses

• fairly high cost, which does not affect the popularity of this model.

Best grinding machine for drills

Model DRILL DOCTOR 750X intended for sharpening in a domestic environment drill of hard metal (titanium nitride, cobalt), carbon and high speed steel HSS. Supported tool diameter 2,4-19 mm. Rigid fixation drill chuck is provided with a V-shaped groove. Work machine element is a 24 mm diamond drum width 19 mm and a grain size of 180 grit. For quick sharpening drills drum easily be replaced by a variant with 100 grit grit.

machine housing stability is provided by silicone legs, powerful motor keeps the speed under load. The model allows to sharpen drills rear surface with angles of 115 ° -140 °. Thanks to a special screw adjustment can be carried out thinning slightly blunted instrument.

Characteristics

• motor power - 80W;
• rotation speed - 15 thousand. rev / min;
• diameter of sharpened drill - from 2.4 mm to 19 mm;
• weight - 1 kg;
• sharpening angle range: 115 ° -140 °.

pros

• improved design of the cartridge;
• adjustment values ​​being ground material;
• patented system of sharpening;
• adjustable leveling system.

Minuses

• it is impossible to sharpen the drill diameter less than 2.5 mm;
• the high cost of consumables.

Best Universal Grinding Machine

An efficient and powerful (600 W) grinder ELITECH CT600C It designed for different operating conditions. Suitable for sharpening any metal tool, for example, drills, chisels, axes. machine and precision machining stability is ensured by adjustable supports, reliable fixation disc made by using metal sleeves. Security workflow responsible spark arrestors and filters, as well as work light lamp on a flexible stem. Sharpening small tool over one of the circles is located magnifying glass.

When the machine does not vibrate as manufacturers have taken care of the rotor balancing. Grinding wheels for uniform density and adapters for them and landing coaxially machined. Due to the high quality of execution model has a relatively high cost.

Characteristics

• Motor Power - 600 W;
• rotation speed - 2850 rev / min;
• the amount of the grinding wheel - 2;
• Disc grinding parameters: diameter - 200 mm, thickness - 25 mm bore diameter - 32 mm;
• weight - 14.3 kg.

pros

• the ability to adjust the support;
• low vibration;
• the presence of spark arresters;
• metal sleeve to lock the disc;
• high quality manufacture.

Minuses

• Unbalanced wheels that is fixable;
• the engine heats up pretty quickly;
• small volume container for the cooling liquid.

Best belt grinding machine

Poppet-belt machine JET JDBS-5-M It designed for domestic use. It has a small size and weight, as well as two working surfaces: sanding disk and tape. Among the benefits should be allocated a table with adjustable tilt angle. The process simplifies the work area of ​​the solid support and the steering angle stop.

The machine is easily mounted on any flat surface. Quality version of the product is at a high level, which eliminates vibrations. There is a mechanism to connect dust extraction. The model is perfect for grinding and polishing small metal items, such as knives.

Characteristics

• motor power - 0.25 kW;
• maximum speed - 2850 r / min;
• disk parameters: diameter - 125 mm;
• limits tilting desktop 0 ° -45 °;
• weight - 7 kg.

Pros:

• small size and weight;
• adjustable desk.

Minuses:

• slightly hanging angle stop.

Best Disc grinding machine

A great tool to use in a workshop or garage - Machine ZUBR ZTSHM-150 / 686L. Compact size, high reliability and simple design. Functional expands so that the pair of grinding with grinding belt drive is present, which allows a larger area to grind the workpiece. In sturdy metal housing mounted on the induction motor 250 watts. Secure fixation of blanks provides a support table with adjustable. For protection against sparks have a transparent screen.

The model is suitable for grinding and polishing of cutting tools and a variety of metal workpieces. To secure the emery in its basis there are special holes.

Characteristics

• Motor Power - 250 W;
• rotation speed - 2950 rev / min;
• dressing wheel parameters: diameter - 150 mm, thickness - 20 mm bore diameter - 32 mm;
• type of transmission - direct;
• weight - 8.2 kg.

pros

• the presence of the sanding belt;
• switch protected against dust;
• Resistant table with adjustable.

Minuses

• absence of backlight;
• low power.

Best table grinding machine

Multifunctional table grinder Energomash TC-6010S designed for sharpening cutting tools in everyday life. Suitable straightening scissors, Knife planers and drills 2-10 mm in diameter. The unit has a compact size and weight, making it easy to transport or move it manually. Working element - the grinding wheel diameter of 49.3 mm.

The package contains blocks for sharpening drill bits, knives, scissors, blades, chisels and chisels, as well as directly power block. The machine can be attached to the bench by means of openings arranged in the support surface.

Characteristics

• Motor Power - 100 W;
• rotation speed - 6700 rev / min;
• grindstone parameters: diameter - 49.3 mm, bore diameter - 10 mm thickness - 7.5 mm, grain - 180 grit;
• type of transmission - direct;
• weight - 1.8 kg.

pros

• possibility of adjusting the grinding angle;
• low weight;
• functionality;
• good stability;
• ideal for the home.

Minuses

• It requires fixing on the desktop because of the small weight;
• the complexity of using baits.

The choice of grinding machine is always based on the specific purpose of its use. It makes no sense to buy a professional model only for sharpening kitchen knives twice a month. Such Emery never be repaid, it will take free space in the garage which is never enough. Better then look at the table and a low-power compact embodiments.