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This section provides an overview for grinders as well as their applications and principles. Also, please take a look at the list of 9 grinder manufacturers and their company rankings. Here are the top-ranked grinder companies as of June, 2025: 1.Granutech-Saturn Systems.
Table of Contents
A grinder is a processing machine used primarily for surface finishing and other polishing processes.
Various polishing methods exist, requiring appropriate grinding wheels and abrasives. Depending on the grinding method, the workpiece may be placed close to a high-speed rotating grinding wheel, so it is necessary to work with care to avoid burns from sparks or being caught in the grinder during the operation.
Grinders are mainly used to finish the surfaces of parts, but they can also be used for rough polishing to remove burrs. In addition to surface finishing, polishing is also used to finish the inside of cylindrical parts. This is because the smoothness of the polished surface improves the sliding properties of the parts.
Polishing is also used for cylinders, rail sliders, and many other parts that perform sliding movements. Recently, there are many desktop size grinders available, which are increasingly being used for polishing silver jewelry and removing burrs from plastic models at home, as well as in factories.
Abrasive grains contained in grinding wheels and abrasives used for polishing exert an effect similar to that of small blades, gradually shaving off the workpiece. The most typical type of polishing is "grinding wheel polishing," in which the workpiece is polished by placing it against a grinding wheel rotating at high speed.
Although this is a very simple polishing method, it requires a great deal of skill because the finish varies depending on small differences in the force and angle at which the workpiece is pressed against the grinding wheel. In addition, as processing proceeds, the grinding wheel itself wears out and is shaved away, so it must be replaced with a new grinding wheel at the appropriate time while monitoring the amount of wear and tear on the grinding wheel. In principle, filing with sandpaper is similar, but more efficient.
A similar procedure exists for "buffing," in which polishing is performed using a "buff" made of soft material such as cotton or felt instead of a whetstone. It is more effective in smoothing surfaces than whetstone polishing and is used for mirror finishing. On the other hand, polishing takes time, so it is not suitable for applications that involve reducing the thickness of the workpiece.
Since grinders work by moving the workpiece close to an object rotating at high speed, care must be taken to avoid injury during operation. In particular, when polishing with gloves, there is a possibility that frayed threads could get caught in the high-speed rotating parts. Even with a small grinder, the force of entrapment is so great that it is dangerous and can lead to serious injury. Also, depending on the material of the workpiece, sparks may be generated upon contact with the grinding wheel, so care must be taken to avoid burns.
Stainless steel is a metallic material with rust and corrosion resistance and heat resistance due to the several-nanometer-thick passive film formed on its surface by bonding with oxygen in the atmosphere. However, if the proper surface condition is not maintained due to machining, surface finishing, transportation, or storage, the passive film will not form evenly, resulting in defective products.
Electropolishing is a process that aims to cleanly remove impurities and roughness from the surface of stainless steel and form a passivation film with high properties. In a stainless steel electropolisher, the surface is electrochemically dissolved and cleaned in microns by passing a direct current through the stainless steel to be polished as an anode in an electropolishing solution.
Rough surface convexities are preferentially dissolved to reduce surface roughness, and defects that are difficult to remove by normal polishing, such as burr coverings and underlying voids caused by polishing or machining, can be smoothed out. It is also highly productive because the processing method is simple, and depending on the size of the electrolytic solution tank, large amounts of polishing can be performed.
Passive film has excellent corrosion resistance and heat resistance, but its thickness is thin and weak at only a few nanometers, so the smoother the stainless steel surface, the more uniform and highly adherent the film will be. Electropolishing is an important process to maximize the characteristics of stainless steel.
Electrolytic combined polishing, which combines physical polishing with abrasives, is effective when an even smoother surface than electropolishing is required. A rotating polishing disc is used as a cathode, and the surface of the workpiece is subjected to electrolytic solution and electric current while it is being moved and polished.
The passive film on the convex surface is mechanically removed and the metal is eluted from it, resulting in smoother polishing than when electrolytic and mechanical polishing are performed independently. The feature of this process is that it can achieve roughness on the order of nanometers.
Because it can polish not only flat surfaces but also curved surfaces such as pipes, it is widely used for semiconductor manufacturing-related parts, piping, valves, and medical equipment that require precision and durability.
*Including some distributors, etc.
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Granutech-Saturn Systems, founded in 1968 and located in Grand Prairie, Texas, is an innovator and manufacturer of machines. The company’s broad range of products includes heavy-duty shredders, grinders and granulators, and powderizers and refiner mills. These machines are essential for size reduction, shredding, grinding, and processing of materials like tires, metals, plastics, and more. The company’s products find applications in recycling facilities, waste management, manufacturing, and material processing that are used to increase efficiency and sustainability in a range of industrial processes.
Jinhua Lanbiao Tools Technology Co., Ltd., established in 2015 and located in Jinhua City, China, is a manufacturer of lithium battery tools. The company delivers brushless lithium electric drills, brushless lithium electric angle grinders, and brushless lithium electric wrenches. It also provides brushless lithium electric hammers, lithium battery brushless wrenches, and rare earth motors. Its brushless lithium electric drills have battery voltages of 16V, are complemented with LED lights, and can endure up to 35 N.m force.
Power Action Inc., founded on 1996 and based in Ningbo,China, is a manufacturer of power tools, hand tools, and accessories. The company offers a range of products such as Cordless Drill, Cordless Wrench, Combination Plier, Mini Diagonal Cutting Pliers, and TCT Saw Blade. These products are applicable in industries such as construction, automotive repair, woodworking, electrical work, and general maintenance. These products facilitate tasks like drilling, fastening, cutting, and gripping with efficiency and precision.
Bestwin Machinery Co., Ltd., established in 2011 and officed in Nanjing city, Jiangsu, China, is a manufacturer and supplier of power tools, garden tools, compressors and generators. The company offers a range of products such as Mini Saw, 1500W Rotary Hammer, 400W Sweeper, 20V Hedge Trimmer, and 10 pcs. Bi-Metal Hole Saw Set. These tools help professionals and DIY enthusiasts’ complete tasks efficiently and accurately in creating products such as in housework, facilitating to the overall quality of work in respective fields. Catering industries such as constructions, gardening, woodworking, landscaping, maintenance, and automotive.
WUYI CHUANGFENG TOOLS MANUFACTURE CO., LTD., founded in 1998 and located in Jinhua, China, is a manufacturer of integrated electric tools. The company offers a broad range of products, including drill series, cutting series, grinder series, and hammer series. These tools serve diverse applications in industrial, commercial, and consumer settings. The products are used for creating holes and fastening in construction and woodworking, for precise material cutting, for grinding and surface finishing tasks, and for drilling and chiseling in masonry and concrete. The company’s products cater to a range of applications, including construction, metalworking, woodworking, and DIY projects.
AWLOP TRADING CO., LTD., established in 1995 and located in Zhejiang, China, is a manufacturer and supplier of hardware. The company’s diverse range of products includes power tools, benchtop tools, garden tools, gasoline tools, and air compressors. These products serve diverse applications across industrial, commercial, and consumer sectors, enhancing efficiency, precision, and convenience in tasks such as construction, woodworking, metalworking, gardening, and landscaping. The company's hardware offerings cater to industries and everyday projects, meeting a range of needs in different applications.
Suzhou Wido Machinery Co., Ltd., founded in 2011 and located in Jiangsu, China, is a manufacturer of professional tools and small machines. The company offers a broad range of products, including power tools, cordless tools, garden tools, generators, and pumps. These products serve diverse applications in construction, woodworking, metalworking, gardening, landscaping, power generation, and fluid handling. The company’s offerings are essential for improving productivity, efficiency, and convenience in a wide range of industrial, commercial, and consumer tasks that are used in industries and everyday tasks.
Lishou Industrial Co., Ltd., established in 2015 and located in Shanghai, China, is a manufacturer of tools. The company’s broad range of products includes power tools and cordless tools. These products serve diverse applications across industrial, commercial, and consumer sectors. The company’s products are used for drilling, cutting, grinding, and fastening in construction, woodworking, and metalworking. These products offer mobility and flexibility, making them suitable for construction, DIY projects, and professional use. The company’s products are used to enhance productivity, efficiency, and convenience in a range of tasks and applications.
Makute Professional Power Tools, founded in 2007 in Yongkang City, Zhejiang Providence, China, is a manufacturer and supplier of power tools and accessories. The company produces tools in the construction, woodwork, gardening, and metalwork industries. It's product portfolio includes drills, grinders, sanders, electric saws, and impact wrenches. The products are durable, robust and efficient, which makes them ideal for heavy-duty applications. Again, the company consistently maintains product design to meet customer demand
Ranking as of June 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Granutech-Saturn Systems |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the grinder page as of June 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
7 | 87.5% |
|
United States of America
|
1 | 12.5% |
200 products found - Page 3
200 products - Page 3
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