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This section provides an overview for rotors as well as their applications and principles. Also, please take a look at the list of 35 rotors manufacturers and their company rankings. Here are the top-ranked rotors companies as of December, 2024: 1.CENTRIC PARTS., 2.Mark Williams Enterprises Inc., 3.BRAKE PERFORMANCE..
Table of Contents
A rotor is a chemical-resistant magnetic laboratory device used to stir liquids. It is also called a stirrer or stirrer bar. The stirrer in the container rotates with the movement of the magnet of the magnetic stirrer, and the liquid can be stirred.
When using a magnetic stirrer, a rotor can be used to stir and homogenize the solution at a constant rotation speed.
Rotors are used in a wide range of fields, including organic synthesis, pharmaceutical synthesis, and chemical experiments, because they can easily homogenize liquids. Rotors in general use have the surface of the magnet coated with fluororesin such as PTFE, and can be used without being violated by a variety of reagents.
The rotator is used with a magnetic stirrer. The magnetic stirrer has a rotatable magnet placed under the stage, which is structured to rotate, and the liquid inside the container is stirred.
If the viscosity of the solution is high, the size of the rotor is not appropriate, or the bottom of the container is not flat, the rotor may not be able to keep up with the rotation of the magnetic stirrer.
The following magnets are known to be used in rotors:
Manufactured by sintering neodymium, boron, and iron, they have the best magnetic properties. Due to their low temperature characteristics, they should be used at temperatures below 80°C. It is used as a strong magnetic stirrer or super strong magnetic stirrer.
Manufactured by sintering barium and iron oxide. It is resistant to heat and produces stable magnetic field lines.
A magnet made of samarium and cobalt. Because it uses a rare metal, it is more expensive than neodymium magnets. It is also used as a stirrer material because its magnetism is stable even at high temperatures.
Rotors are commercially available in a variety of shapes. They come in a variety of sizes and can be used according to the liquid nature of the solution, capacity, and rotation speed.
In addition to fluororesin such as PTFE (polytetrafluoroethylene), which is commonly used for surface coating, there are also glass rotators. Fluoropolymers have excellent chemical resistance and can be used in a variety of solutions, including acids, alkalis, and organic solvents, but wear and discoloration occur over time, so they must be replaced.
Rotors come in a variety of shapes and sizes. It is necessary to select one that is heat resistant and chemical resistant to the solution to be agitated.
The most commonly used type of rotor is the standard type, which is a rod-shaped rotor. Among the standard types, the taper type and pivot ring type have a structure that prevents the rotor from jumping because it has little contact with the container. If the solution has a high viscosity or there are sediments, which require a heavy load for rotation or rotational force for homogenization, a type that is not affected by the shape of the bottom of the container or a type that diffuses sediments should be selected.
When stirring a solution, it may not turn well depending on the shape of the bottom. shape of the container.
To homogenize a solution with sediment, more stirring force is required than for normal solutions. It is relatively easy to homogenize by using a triangle type, a cross-shaped type, or a double-sided cross-shaped type, which are shaped to roll up sediments as they rotate.
Other types that can be used with test tubes and rotators with more complex shapes are also commercially available.
Rotors are a common source of contamination. After removal from solution, they should be cleaned by an appropriate method that removes the solution used.
Also, make sure the surface is clean before use and discard if there is any yellowing.
After using the rotor, remove it by placing a magnet against it from outside the container or by using a rod made of magnets.
*Including some distributors, etc.
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Arnold Magnetic Technologies is a manufacturer of magnets, magnetic assemblies, and precision thin metals based in New York since 1895. The company deals in permanent magnets, flexible composites, electromagnets, magnetic assemblies, and precision thin metal foils. The permanent magnets, such as L-Type Laminated ones have various applications in the aerospace, automotive, motorsport, and industrial markets. Similarly, alloy strips and foils are used in industries that need to improve the power density of motors, transformers, and batteries. The composite sheets and strips are used for X-ray and gamma-ray radiation absorption, and RFI/EMI shielding and electromagnets are vital for defense projects.
Mark Williams Enterprises Inc. is an American manufacturer based in Louisville, Colorado, specializing in automotive and industrial driveline components. The company's extensive product offerings include axles, brakes, chassis components, and modular rear ends. Moreover, the company provides components tailored for specific applications, such as classic or drag racing purposes, off-road driving, as well as the National Association for Stock Car Auto Racing (NASCAR). The company provides industrial services such as broaching, induction hardening, and torsional testing. Its expertise also extends to the manufacturing of custom parts, specifically addressing components like shafts and spines that might be challenging to source through conventional means.
Centric Parts, established in 1989 and headquartered in Carson, California, is a manufacturer and supplier of aftermarket brake components for various vehicles. Its product range includes brake friction and iron, hydraulics, remanufactured loaded and semi-loaded calipers, caliper kits, and wheel cylinder kits. These products cater to both professional technicians and various budgets. The company has garnered awards like the U.S. Department of Commerce's Export Achievement Award and AutoCare Association's Print or Electric Catalog Award.
Brake Performance, founded in 1937 in the United States, is a manufacturer of performance brake products. Its product range includes brake rotors, brake pads, brake calipers, as well as brake drums & shoes, and hardware & rebuild kits. These products are engineered to enhance stopping power and offer improved performance over stock brake components. All of its rotors are tested to meet or exceed G300/ISO9002/QS9000 and VDA6.1 standards. All of its brake pads are also put through dynamo-meter & fleet testing. The products are designed for use in light to medium-duty vehicles, including high-powered vehicles.
Accurate Specialties, Inc. A Division of Fisher Barton, founded in Watertown, WI, in 1906 is a manufacturer of high wear and cutting components. The company's product portfolio includes Wear Plates and Liners, Cutting Tools, precision-made metal forming dies to ensure accurate and repeatable shaping of metal components, Tungsten Carbide Components and Engineered Coating Solutions. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. The company also offers customer services that include support, custom research projects and customized services.
Bauer Springs, Inc. founded in Pittsburgh, PA in 1940 is a manufacturer of disc springs and subassemblies for vane pumps. The company's product portfolio includes Belleville washers, conical washers, high-grade steels and alloys, to ensure the durability and reliability of the products and tailor-made disc springs and subassemblies to suit diverse vane pump applications. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation.
Thomson Lamination Co., Inc. (TLC) is a supplier and manufacturer of specialty lamination stamping products originally founded in 1964 before its acquisition by Sterling A. Martin in 1993. Located in Maple Shade, New Jersey, the company produces various custom laminations, rotors, stators, and tooling fabricated from specialty alloys like nickel or cobalt. They also offer grinding, annealing, assembly, and engineering support services for customer projects. TLC primarily serves client companies and government contractors in the aerospace, military, and energy sectors.
Amalga Composites was founded in 1966 and headquartered in West Allis, Wisconsin. The company is an ISO 9001 2015 certified designer, engineer, and manufacturer of composite products that serve industries such as oil & gas, manufacturing, low-pressure air tanks, telecom, and subsea. Among the reinforcement materials the company works with are carbon, fiberglass, aramids, E-glass, and S-glass. The company is capable of manufacturing in all composite mediums as well as matrices such as epoxy, vinal, and ester.
Tolerance Masters is an ISO-certified contract manufacturer of CNC precision machining parts and subassemblies. TM is based in Circle Pines, Minnesota, and boasts a rich catalog of CNC parts and subassemblies such as servo actuation components, pump cover assemblies, block valves, valve bodies, and Airfoil components. Tolerance Masters serves many markets, including medical devices and high-end commercial products, electro-mechanical applications, and OEM products of Power Generation. As a service provider, TM offers vertical milling, gear shaping, custom deburring, gun drilling, and engine clean room services.
Everson Tesla Inc., established in Nazareth, Pennsylvania in 1926 is a manufacturer of coils, motors, magnets, superconducting magnets, and superconducting systems. The company's product portfolio includes electromagnetic coils, solenoids, and custom-designed coils, permanent magnets, electromagnets, and rare-earth magnets. Their products find applications in medical imaging, research, and high-energy physics. The company serves markets including Scientific Research and Laboratories, Medical Imaging, Industrial Automation, Aerospace and Defense. The company also offers customized services and technical support.
Alliance LLC is a supplier of permanent magnets and a manufacturer of customized magnetic assemblies for the automotive, industrial, medical, alternative energy, and communication industries. The company has several locations in the US, including Indiana, Kentucky, California, and Texas, and one outside the US, Mexico. Additionally, the company has ISO9001:2015 certification, and all suppliers within the Alliance LLC group are certified with ISO14001 Environmental Standards. Alliance LLC offers various neodymium discs and blocks for developmental and prototype projects. In addition to manufacturing custom designed magnetic assemblies, the company also has an extensive inventory of Ferrites, NdFeB, and Bonded magnets.
Integrated Magnetics was established in 1955 and based in Culver City, CA, as a manufacturer of permanent magnets, precision magnetic assemblies, electro-mechanical components, and custom electrical machines built for commercial, industrial, technical, and mission-critical applications. The company produces motors, rotors, halbach arrays, linear & rotary actuators, as well as motion & position sensors, alternators, and generators. The company serves the defense, aerospace, transportation, medical, and semi-conductor industries by offering services including finite element analyses, and quality planning & assurance. They also offer CNC machining, grinding programming, machine tooling & fixturing, and inspection tooling for industrial automation and energy sectors.
Precision Custom Components, LLC established in York, PA in 1876, is a manufacturer of large build-to-print pressure vessels and reactors. The company's product portfolio includes Heat Exchangers, Distillation Columns, Storage Tanks and Process Skids, used in industries such as Chemical and Petrochemical, Oil and Gas, Pharmaceutical and Biotechnology. The company also manufactures custom made cutting tools to be used for a wide array of materials, finishes and tolerances, fabrication equipment and provides welding services.
Windtech, Inc. is an American manufacturer of custom electric motor parts and components that was established in 1991 in Douglas, Arizona. The company primarily produces conventional and linear motors, self-supporting coils, electronic board assemblies, rotors, and stators. These are used in the design, prototyping, and assembly of electric motors that convert electrical energy to mechanical energy. Windtech, Inc. also offers custom design and fabrication services to their clients, which include companies in the green energy, aerospace, and electric car industries.
Columbia Research Laboratories, Inc. is an ISO 9001, AS9100, and MIL-STD-810-certified manufacturer of industrial sensors that was established in 1953 in Woodlyn, Pennsylvania, USA. The company’s product lineup includes piezoelectric accelerometers for measuring shock, vibration or acceleration in high-frequency, low shock environments, as well as dynamic pressure sensors for measuring pressure fluctuations in liquids or gasses. It also offers strain gage sensors for measuring stress in metal structures or components. The company chiefly serves clients in the defense, military, and aerospace industries. Some of its notable clients include NASA and the US Department of Defense.
Brake Parts Inc. (BPI), founded in 1902 to produce Raybestos Brakes and now with facilities in China, India, and Mexico and headquarters in the USA, is a manufacturer and distributor of brake system components to the automotive aftermarket industry. The company's product line includes vehicle brake pads, vehicle brake rotors, calipers, drum brake shoes, and trailer brake assemblies. Brake Parts Inc.'s product supply covers passenger cars, light trucks, medium-duty trucks, and commercial vehicle fleets. The company's brands include Raybestos, AIMCO, BRAKEPRO, Vortex, and American Brakeblok.
Maine Conveyor Inc., established in 1981 and headquartered in Gorham, Maine, is a custom manufacturer, distributor, and service provider of conveyor systems. They specialize in designing, fabricating, and installing conveyors for diverse industries, including pulp and paper, biomass, power generation, and wastewater treatment. Their product range includes screw conveyors, belt conveyors, roller conveyors, vibratory conveyors, drag conveyors, and accumulators. These conveyors are utilized for transporting various materials like ash, air, fuel, biomass, and wastewater, serving applications such as ash handling, air pollution control, biomass handling, and wastewater treatment.
Stephens Manufacturing was started in 1957 in Tompkinsville, Kentucky. Stephens is a manufacturer and distributor of concrete-related equipment. Categories include ready mix plants, precast plants, central mix plants, RCC, environmental, and material handling. Ready mix batch plants that generally have quicker installation. Precast plants are custom built. Portable mixers mix RCC and other mixes. Environmental components include dust collectors, reclaimers, and wash down racks. Material handling includes batchers, bins, hoppers, silos, conveyors, and vertical pigs. Stephens offers assistance in customer problem solving and delivers to customers globally.
Newport is a division of MKS Instruments, Inc. that was incorporated in 1961 and headquartered in Andover, Massachusetts. The company is a manufacturing company that serves the specialty industrial, advanced electronics, and semiconductor industries. The company markets its products through Spectra-Physics, MKS Instruments, Richardson Grating, and other brands. Their product categories include motion, optomechanics, optics, and vacuum instruments. Product categories include lasers, MKS vacuum & gas solutions, laser diode controls, and tables & isolation systems.
ARCoptix S.A is a manufacturer of optical measurement systems that was founded in 2005 in Neuchâtel, Switzerland. The company specializes in producing fourier transform infrared (FTIR) equipment and liquid crystal systems. Its products include FTIR spectrometers for analyzing organic and inorganic compounds, variable spiral plates capable of radial or azimuthal polarization, and modular gas analyzers for field measurement purposes. The company also offers product compatible software and accessories for added functionality, and OEM modules for customers with unique project specifications. Some of its notable clients include CERN, NASA, and the University of Tokyo.
Sumitomo Metal Mining Co., Ltd. was established in 1952 and is a manufacturer of battery materials based in Minato, Tokyo, Japan. The company produces various products related to the battery materials in a complete in-house system, such as mineral ore, low-grade nickel oxide ore, nickel sulfate, and cathode material. The company divide different products into three business divisions, which are Mineral Resources, Smelting and Refining, and Materials business. The minerals that are being the main commodities of the company are mainly copper, nickel, cobalt, gold, and silver.
EBC Brakes, a privately owned company, is a major manufacturer of brake components, established in 2003, based in the UK. The company’s product range includes brake pads for cars, trucks and SUV, brake rotors (discs) for wind farms, for military applications such as the Humvee, armored cars and tanks, railway brake products. Its rotor brake disc range includes cast iron brake rotors for automobiles, stainless steel brake rotors for motorcycles and bicycles and ATV brake pads made in the UK. With a worldwide workforce of over 400 people, it has also a network of fitting centers and stockists all over the world.
Hunan Dayoptics, Inc. is an OHSAS 18001-certified manufacturer of optical components and parts that was established in 2005 in Changsha, Hunan, China. The company offers optical lenses such as plano-convex and bi-concave models, optical prisms such as penta or right angle types, and optical crystals such as KTP and Nd:YAG for creating lenses for medical equipment. It also offers custom design and development services for unique projects. The company’s products are commonly used in the laser, defense, and communication industries.
Foctek Photonics, Inc., founded in 2002 and headquartered in Fujian, China, is a manufacturer of optical components and related products. The company develops and produces precision optical components, precision optical lenses, and special custom optical lenses. Its precision optical lenses include 3MP and 5MP HD zoom security surveillance lens, 20MP machine vision lens, and ADAS lens. These products are used in precision instruments, medical, and automation equipment. The company holds ISO/TS16949 and ISO14001 certifications covering quality and environmental management.
Hunter Industries, established in 1981, and based in California, USA, is a manufacturer and supplier of residential and commercial irrigation. Their product portfolio includes rotors, AT systems, nozzles, spray bottles, hydras, controllers, sensors, remotes, valves, and accessories. The company offers a range of water-efficient, easy-to-use irrigation solutions for residential, commercial, and golf course applications. The products are used in various industries which include irrigation systems, landscape lighting, and custom molding industries.
R1 Concepts Inc., established in 2002 and headquartered in Los Angeles, California, USA, is a manufacturer and retailer of automotive braking systems. The company has developed a comprehensive brake catalog in the industry for all foreign and domestic vehicle applications from 1930 to present. Its product range includes brake rotors, brake pads, brake calipers, brake drums, and brake shoes. Its components play a crucial role in ensuring the safety and performance of a vehicle’s braking system, helping vehicles slow down or stop by creating friction against the wheels, which is essential for safe driving in all conditions.
Jurid, founded in 1915 and headquartered in Glinde, Germany, is a manufacturer of brake parts. Its aftermarket range includes other key parts needed for repairs, such as brake discs, fluids, wear indicators, and Evo-Kits. These products are designed for all vehicles and are used in various applications, including light and commercial vehicles. With 14 OE production facilities worldwide, the company produces in excess of 40 million brake pad pieces per year.
Wagner, an innovator of braking technologies which started in 1891 in St Louis, Missouri, is a manufacturer of brakes and all brake components for passenger cars, medium-duty, and commercial applications. The company’s main products include brake pads which are designed with comprehensive coverage for different automobile types, driving habits and conditions with superior braking performance and lighting products including headlights, taillights, and all other vehicle lights which meet the SAE standards. Wagner also provides services such as brake system inspection, brake pad testing, as well as technical resource tips to guide their customers.
Accu-Grind of New England, is a full-service industrial blade manufacturer and sharpening company, located in Oxford, Massachusetts. The company produces various types of blades and knives, including saw blades, shredder blades, straight knives, serrated knives, and specialty knives. The offer resharpening, engineering, and customization of knives and blades, which are used in a various industries, including plastic, recycling, food processing, and industrial packaging. Accu-Grind is ISO 9001:2015 certified, ITAR registered, and GSA approved.
Artifex Engineering GmbH & Co. KG, a company established in 2001 and based in Emden, Niedersachsen, is a manufacturer and supplier of measuring instruments and optical components. Its specialization is manufacturing measuring instruments such as optical power meters, trans-impedance amplifiers, integrating spheres, and pulsed laser diode drivers. It also manufactures optical components, including beamsplitters, optical filters and lenses, polarization optics, laser lighthouses, and composite optics. The company has obtained ISO 9001:2015 certification. Its manufactured products are utilized for industrial and metrological industries across Germany and the UK.
Castech Inc. is a manufacturer and supplier of optics and laser components for photonics applications that was established in 1990 in Fuzhou, Fujian, China. The company’s product lineup includes precision optical components for the display and semiconductor industries, such as aspherical lenses, beam splitters, and diffraction gratings. It also offers laser components for laser systems, such as photoelastic modulators and acousto-optic devices. The company is ISO 9001, IAFT 16949, ISO 14001, and ISO 45001-certified, and chiefly serves the semiconductor and telecom industries.
Electro Optical Components Inc., founded in 1997 and based in Santa Rosa, California, is a distributor of special electronic components such as infrared detectors, electronic amplifiers, and gas sensors. It represents European companies in North America, some of which include IMM Photonics GmbH, LBP Optics, and LED Microsensor NT. The company has a turnover of between $2,000,000 and $5,000,000 and supports several charities around Sonoma County, including Windsor Rotary, The Living Room, and Salvation Army. It has also awarded over 100 scholarships to bright students from Sonoma State University and Santa Rosa Junior College.
Advance Auto Parts, Inc., founded in 1932 with headquarters in the USA, is a supplier of automotive aftermarket parts. The company's product line includes automotive replacement parts, engine parts, brake assemblies,car batteries, vehicle accessories, and tools. As of 2019, Advance Auto Parts operated 4,912 stores and 150 branches in the United States and Canada. The company's products are available through the company's online stores and distributor stores. Advance Auto Parts supplies both individual and wholesale customers and has sponsored racing teams such as Alex Bowman, Tommy Baldwin Racing, and JR Motorsports, as well as numerous automotive events.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | CENTRIC PARTS. |
7.4%
|
| 2 | Mark Williams Enterprises Inc. |
7.4%
|
| 3 | BRAKE PERFORMANCE. |
6.8%
|
| 4 | Accurate Specialties, Inc. A Division of Fisher Barton |
5.8%
|
| 5 | Arnold Magnetic Technologies |
5.1%
|
| 6 | Everson Tesla Inc. |
4.5%
|
| 7 | Columbia Research Laboratories, Inc. |
4.2%
|
| 8 | Precision Custom Components, LLC |
3.9%
|
| 9 | Alliance LLC |
3.5%
|
| 10 | Amalga Composites, Inc. |
3.5%
|
Derivation Method
The ranking is calculated based on the click share within the rotors page as of December 2024. 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 (%) |
|---|---|---|
|
United States of America
|
20 | 80.0% |
|
Japan
|
2 | 8.0% |
|
Switzerland
|
1 | 4.0% |
|
United Kingdom
|
1 | 4.0% |
|
Germany
|
1 | 4.0% |
