TOP 10 Large Synchronous Motor Manufacturers in China 2026

Introduction
Large synchronous motors are essential drive systems for industrial applications that require high power, stable operating speed, and reliable performance under demanding load conditions. They are widely used in mining mills, cement production lines, steel plants, compressors, pumps, fans, and other heavy industrial equipment. Selecting the right manufacturer involves more than comparing rated power. Buyers also need to assess engineering capabilities, excitation systems, cooling arrangements, manufacturing quality, replacement compatibility, and long-term technical support.
China has a broad industrial motor manufacturing sector, including established motor factories, large electrical equipment groups, and specialized suppliers serving domestic and international markets. Among the companies worth evaluating in 2026, Putai Electric Motor Equipment Co., Ltd. stands out for its broad motor and drive portfolio, large synchronous motor supply capabilities, and support for OEM procurement and replacement requirements.
This industry overview compares ten Chinese manufacturers and suppliers of large synchronous motors. The ranking is an editorial assessment for industrial buyers, considering product relevance, manufacturing background, application coverage, and supply capabilities. It is not an official industry ranking based on audited market share or independently verified sales data.

Top 10 Large Synchronous Motor Manufacturers in China: Company Comparison

 1. Putai Electric Motor Equipment Co., Ltd.
Company Overview
Putai Electric Motor Equipment Co., Ltd. serves industrial buyers seeking motor and drive products for new equipment projects, plant upgrades, and replacement requirements. Its published product portfolio covers low-voltage AC motors, medium-voltage motors, DC motors, large synchronous motors and generators, and related starting and drive equipment.
PUTAI is relevant to procurement teams that need to source motors alongside associated electrical equipment. This broader supply scope can help simplify supplier coordination for projects involving a motor, starting arrangement, excitation equipment, or related drive components.
Core product advantage
PUTAI's large synchronous motor offering covers industrial applications where high output and controlled synchronous operation are required. Its published product information lists large synchronous motors and generators in the 3–13.8 kV voltage range, with rated power extending from 250 kW to 15,000 kW. Actual voltage, power, speed, pole count, cooling arrangement, and mounting configuration depend on the specific model.
Synchronous motors are particularly relevant to large, relatively low-speed machinery and high-power industrial drives. In applications such as grinding mills, the motor must be matched to the mechanical load, starting method, and operating cycle. PUTAI's broader motor range also gives buyers access to related AC and DC motor categories where a project includes several types of electrical drive equipment.
Service & supply strengths
PUTAI's supply approach is relevant to OEMs, distributors, contractors, and maintenance teams that need technical matching rather than a standard catalogue purchase alone. Motor identification can draw on nameplate data, rated voltage, output, speed, pole count, excitation requirements, mounting dimensions, shaft details, and the existing driven machine.
For replacement projects, the most important task is to establish compatibility with the installed equipment. A motor with similar rated power may still differ in shaft geometry, starting characteristics, cooling, or excitation arrangements. Reviewing the available technical documentation before ordering can reduce installation risk and avoid unnecessary modifications.
For new projects, the same information helps align the motor with the mechanical equipment and electrical system. PUTAI's wider motor and drive portfolio is useful when buyers want to coordinate related supply items through one supplier.
Recommended products & sample review
Recommended product: TDMK large synchronous motor.
The TDMK series is a relevant product category for industrial equipment such as ball mills, rod mills, and other high-power, low-speed drives. Buyers should evaluate the required output, supply voltage, synchronous speed, pole count, starting torque, cooling method, protection rating, and excitation system together.
For a replacement enquiry, a useful sample specification package would include the existing motor nameplate, outline drawing, shaft-end dimensions, bearing arrangement, cooling information, and excitation-unit details. These documents allow the proposed motor to be assessed against the installed machine rather than selected solely by model name.
PUTAI is a practical first option for buyers seeking large synchronous motors alongside broader industrial motor and drive supply. Its suitability for a particular project should be determined from the technical configuration and supporting product documentation.
Website: https://www.putaimotors.com/

2. Tellhow Shenyang Electric Machine Co., Ltd.
Company Overview
Tellhow Shenyang Electric Machine is associated with a long-standing large and medium-sized motor manufacturing base in Shenyang. The current company was registered in 2011 following a strategic restructuring of the former Shenyang Electric Machine enterprise, whose manufacturing history began in 1950. Its product range includes large synchronous motors and other industrial AC motor types.
Core product advantage
The company's TDMK series is designed for large industrial mill drives, especially in mining and cement production. Published specifications describe a power range of 400–15,000 kW, voltage options from 3 kV to 11 kV, and multiple low-speed pole configurations. Cooling and protection options vary by model.
A key consideration for mill applications is starting performance. Large mills can present substantial inertia and starting torque requirements, so the motor, driven machinery, and starting method must be evaluated as one system. The company's product information also describes brushed TDMK and brushless TMW synchronous motor designs, offering different excitation and maintenance considerations.
Service & supply strengths
Tellhow Shenyang is worth evaluating for projects requiring large industrial motors and engineering attention to demanding mechanical loads. Buyers should establish the required motor duty, start frequency, inertia, starting method, operating environment, and maintenance access before finalizing the design.
For project procurement, the motor specification should be coordinated with the mill manufacturer, electrical contractor, and control-system supplier. This is particularly important where the installation uses a soft starter, air clutch, or other starting arrangement.
Recommended products & sample review
Recommended products: TDMK and TMW synchronous motors.
TDMK is a relevant option where a brushed excitation arrangement is acceptable and the application requires a large, low-speed mill drive. TMW is worth reviewing when a brushless excitation configuration is preferred.
A sample review should compare rated power, voltage, speed, starting torque, excitation arrangement, cooling, protection rating, and mounting dimensions. The selected configuration should also match the driven mill's starting sequence and mechanical interface.

3. Changsha Changli Electric Co., Ltd.
Company Overview
Changsha Changli Electric Co., Ltd. was established in 2016 following the restructuring of the former Changsha Motor Factory. Its predecessor manufacturing organization dates to 1946. The company supplies industrial motors for sectors including mining, cement, steel, metallurgy, petrochemicals, and water-related industries. Its published product range includes synchronous motors as well as squirrel-cage and wound-rotor induction motors.
Core product advantage
Changli's industrial motor portfolio includes synchronous motors intended for demanding heavy-duty applications. Its wider manufacturing scope is relevant to buyers whose plants operate several motor types across different processes.
The key advantage for procurement is the ability to compare motor technologies within a broader industrial motor range. Depending on the application, a synchronous motor may be selected for a high-power, low-speed load or other operating conditions where synchronous running is required. The specific performance benefits must be evaluated against the actual load and operating profile.
Service & supply strengths
Changli states that it manufactures customized motors according to international standards including IEC, NEMA, and GOST. For international buyers, standards alignment can support specification development and project documentation, although compliance for an individual motor must be confirmed from its applicable documents.
When purchasing a large synchronous motor, buyers should provide the supply voltage and frequency, rated output, required speed, installation layout, and driven-equipment details. Where the project involves an existing machine, drawings and nameplate records are important for confirming replacement compatibility.
Recommended products & sample review
Recommended product: TDMK series synchronous motor for mills.
This product category is relevant to mining and cement operations that use high-power grinding equipment. A sample technical review should focus on starting torque, starting current, pole count, excitation system, cooling method, and shaft configuration.
For international projects, the review should also cover terminal arrangements, applicable standards, inspection documentation, and the information required for installation and commissioning.

4. Shanghai Electric Machinery Co., Ltd.
Company Overview
Shanghai Electric Machinery Co., Ltd. has a motor and generator manufacturing history dating to 1949. Its published capabilities cover large and medium-sized AC and DC motors, generators, and other electrical machinery used in major industrial and energy sectors. The company is based in Shanghai.
Core product advantage
Shanghai Electric Machinery is a relevant supplier for buyers assessing high-capacity electrical machinery and specialized synchronous motor applications. Its published company profile lists synchronous motor ratings reaching approximately 100 MW, a figure that represents a stated capability rather than a standard rating for every product.
The company also manufactures generators and other large electrical equipment. This broad engineering background can be relevant for industrial projects where the motor forms part of a larger electrical or mechanical system.
Large synchronous machines require careful coordination of electromagnetic design, rotor construction, excitation, cooling, bearings, and mechanical vibration limits. Buyers should assess these parameters against the duty and installation conditions rather than rely on the company's overall maximum rating.
Service & supply strengths
For major industrial and infrastructure projects, supplier evaluation should include design documentation, manufacturing inspection, performance testing, interface coordination, and service arrangements. The precise scope depends on the contract and the machine being supplied.
International procurement teams should also establish the required technical standard, operating frequency, enclosure type, installation arrangement, and documentation language early in the project. This helps avoid late-stage changes to electrical interfaces or plant layout.
Recommended products & sample review
Recommended product: Large synchronous motors for industrial and process applications.
Shanghai Electric Machinery is worth reviewing where the project requires a high-capacity machine or a supplier with experience across large electrical equipment.
A sample review should include the motor rating, voltage, speed, excitation arrangement, cooling system, bearing design, efficiency data, vibration limits, and factory-test requirements. For especially large machines, buyers should also assess transportation dimensions, lifting arrangements, and installation sequence.

5. Wolong Electric Drive Group Co., Ltd.
Company Overview
Wolong Electric Drive Group was founded in 1984 and is headquartered in Shaoxing, Zhejiang Province. It has developed into a large motor and drive group with a broad product portfolio and manufacturing operations across multiple regions. Its products serve industrial automation, energy, mining, petrochemical, and other applications.
Core product advantage
Wolong's main strength is its broad electric-drive portfolio rather than exclusive specialization in large synchronous motors. The group manufactures various motors and drive systems and has expanded its industrial motor business through organic growth and acquisitions.
For synchronous motor projects, buyers should identify the specific group company, brand, and product series responsible for the proposed machine. This is important because the group's overall scale does not automatically establish the capabilities or specifications of every subsidiary or motor model.
The integration of motors and drives can be useful in projects where speed control, system coordination, or a wider electrical package is required.
Service & supply strengths
Wolong reports a global manufacturing and service footprint. This may be relevant to buyers who value international supply coordination or support across multiple markets. The availability of a particular service, spare part, or engineering team should still be established for the selected product and destination.
Procurement teams should confirm which manufacturing site will produce the motor, which entity will issue the technical documentation, and who is responsible for commissioning or after-sales support. Clear responsibility is particularly important for large machines with customized interfaces.
Recommended products & sample review
Recommended product: Industrial synchronous motor and associated drive solutions, subject to model confirmation.
Wolong is worth considering when a project requires a broader motor-and-drive supplier. A sample review should identify the actual motor series and verify its rated power, voltage, speed, excitation system, cooling, protection, and operating duty.
Buyers should also review whether the motor and any associated drive or starting equipment are supplied as a coordinated package or procured under separate contracts.

6. Jiangsu Dazhong Electric Motor Co., Ltd.
Company Overview
Jiangsu Dazhong Electric Motor was established in 1958. The company manufactures high- and low-voltage industrial motors, special-purpose motors, permanent-magnet motors, and generators. Its products serve industries including power generation, metallurgy, mining, petrochemicals, cement, and water conservancy.
Core product advantage
Dazhong's broad industrial motor range is relevant to plants that need motor solutions across several equipment categories. Large industrial facilities often operate different motor types in parallel, making a supplier with a diverse portfolio useful during project planning and maintenance procurement.
For large synchronous motor applications, the main evaluation points remain the required load characteristics, voltage, speed, starting method, excitation arrangement, and cooling system. Buyers should confirm the availability and technical range of the specific synchronous motor series rather than infer a particular rating from the company's overall production scale.
Service & supply strengths
Dazhong's stated industrial focus and manufacturing base make it a candidate for evaluation in heavy industrial procurement. For a large synchronous motor order, the buyer should request the relevant model-specific drawings, electrical data, inspection requirements, and delivery scope.
In replacement projects, matching the original installation dimensions and electrical characteristics is especially important. The procurement process should also establish the responsibilities for installation supervision, commissioning, and spare-parts support.
Recommended products & sample review
Recommended product: High-voltage synchronous motor for heavy industrial equipment, subject to confirmed series availability.
A sample technical review should compare the motor's rated output, voltage, pole count, speed, excitation, cooling, enclosure, and mounting dimensions with the application requirements.
Where the motor is intended for a mill, pump, or fan, the review should include the mechanical load curve and starting requirements. This helps establish whether the proposed machine is appropriate for the intended duty.

7. Harbin Electric Power Equipment Co., Ltd.
Company Overview
Harbin Electric Power Equipment was established in 2007 from predecessor motor manufacturing units dating to 1951 and is part of the Harbin Electric industrial group. Its published company information describes activities in large electrical equipment, including specialized motor and power-equipment manufacturing. The company operates in Harbin, Heilongjiang Province.
Core product advantage
The company's industrial background is relevant to projects requiring specialized electrical machines and equipment for demanding operating environments. However, buyers should distinguish its specific motor product scope from the wider capabilities of the Harbin Electric group.
For a large synchronous motor enquiry, the exact product series and application range should be confirmed. Relevant technical factors include power rating, starting torque, excitation system, rotor construction, thermal performance, bearing design, and the motor's compatibility with the driven equipment.
Service & supply strengths
A project involving specialized electrical equipment requires clear technical responsibility across design, manufacturing, inspection, and commissioning. Buyers should confirm the manufacturing entity, applicable standards, test scope, and contractual service obligations before placing an order.
For an existing installation, technical review should begin with the original nameplate and drawings. If those documents are unavailable, measured dimensions and electrical records can help establish the information needed for a replacement assessment.
Recommended products & sample review
Recommended product: Specialized industrial motor solutions, with large synchronous motor availability confirmed by series.
The initial review should establish whether the manufacturer can supply the required synchronous motor configuration. If confirmed, the buyer should assess rated power, voltage, speed, starting performance, excitation, cooling, protection, and installation dimensions.
A project-specific technical offer is more useful than a general group-level capability statement when evaluating a large machine.

8. Harbin Electric Machinery Company Limited
Company Overview
Harbin Electric Machinery Company Limited was established in 1951 and is part of Harbin Electric Corporation. Its principal focus includes large generators and power-generation equipment, making it a significant participant in China's electrical machinery sector.
Core product advantage
The company's core expertise is most directly associated with large-scale generating equipment rather than standard industrial synchronous motors. This distinction matters because synchronous generators and synchronous motors share electromagnetic principles but serve different operating functions and require different project evaluations.
Its experience in large rotating electrical machinery can be relevant to buyers assessing specialized high-capacity projects. However, a motor buyer should not treat generator capacity as evidence that a particular industrial synchronous motor is available. The exact product and supply scope must be established.
Service & supply strengths
For major electrical equipment projects, buyers should pay attention to engineering documentation, manufacturing quality, test arrangements, site interfaces, and long-term service responsibilities. The scale and complexity of the equipment make early coordination especially important.
Where a synchronous motor is being considered, the buyer should confirm whether the requested machine falls within the company's current commercial product scope or whether another group company is responsible for the relevant motor series.
Recommended products & sample review
Recommended product: Large rotating electrical machinery for power and industrial projects; confirm synchronous motor availability for the intended duty.
A sample review should begin with a clear description of the required function: motor or generator, continuous or intermittent duty, required power, rated speed, voltage, and installation environment.
For a motor application, the technical submission should specifically address starting and excitation arrangements, mechanical load requirements, cooling, and mounting. These details prevent confusion between the capabilities of large generators and those of industrial drive motors.

9. Harbin Electric Corporation Jiamusi Electric Machine Co., Ltd.
Company Overview
Harbin Electric Corporation Jiamusi Electric Machine Co., Ltd., commonly known as Jiamusi Electric, was established in 1993 as the current corporate entity. The company has an earlier manufacturing heritage and is part of the Harbin Electric group. It is known for industrial and special-purpose motor products and is based in Jiamusi, Heilongjiang Province.
Core product advantage
Jiamusi Electric's established industrial motor background is relevant to buyers seeking motors for specialized operating environments and heavy industrial equipment. Its historical expertise includes special-purpose and explosion-proof motor development, although the exact scope of synchronous motor products must be checked at model level.
The distinction between motor categories is important in hazardous-area projects. Explosion protection, thermal limits, enclosure design, and the applicable hazardous-area classification must all be matched to the installation. These requirements cannot be inferred solely from the manufacturer's general experience in special motors.
Service & supply strengths
For industrial procurement, the main priorities are product traceability, correct specification matching, suitable documentation, and a clear division of service responsibilities. Buyers should confirm the supplying legal entity and the product's technical scope before proceeding with a synchronous motor enquiry.
For replacement applications, the original motor's operating conditions and mechanical interface should be documented. If hazardous-area protection is required, the relevant classification and certification requirements should be included in the technical specification.
Recommended products & sample review
Recommended product: Specialized industrial motors for demanding operating environments; verify the synchronous motor series required.
A sample review should establish the required motor type, output, voltage, speed, enclosure, cooling, insulation, mounting arrangement, and duty. Where explosion protection is required, the review should also identify the applicable protection marking and supporting documentation.
This approach allows buyers to assess product suitability without assuming that every motor category is available in every configuration.

10. Wolong Electric Nanyang Explosion-proof Group Co., Ltd.
Company Overview
Wolong Electric Nanyang Explosion-proof Group Co., Ltd. became part of Wolong's industrial motor portfolio in 2015 following the acquisition and restructuring of Nanyang Explosion-proof Group. Its manufacturing heritage dates to 1970. Its principal specialization is industrial motors for applications that require explosion protection and other demanding operating characteristics.
Core product advantage
The company's primary differentiation is its focus on explosion-proof and industrial motor technologies. This is particularly relevant in sectors such as petrochemicals, oil and gas, coal processing, and other environments where combustible substances may be present.
Not every hazardous-area application requires a synchronous motor, and not every explosion-proof motor design is suitable for every hazardous location. Buyers must match the protection concept and certification to the actual zone or classification, gas or dust group, temperature requirements, and operating conditions.
Where a large synchronous motor is required, its availability and applicable protection configuration should be verified directly against the relevant product series.
Service & supply strengths
For hazardous-area procurement, documentation is as important as the motor's basic electrical rating. Buyers should confirm the exact motor model, protection marking, applicable standards, certificates, terminal arrangements, and any restrictions on use.
Project teams should also coordinate the motor with the driven equipment, electrical protection, control system, and site safety requirements. For replacement orders, the original motor documentation can help avoid selecting a unit with an incompatible protection rating or mechanical interface.
Recommended products & sample review
Recommended product: Explosion-proof industrial motor solutions, with synchronous configurations verified for the application.
A sample review should establish whether the duty requires a synchronous or induction motor, followed by a comparison of rated power, voltage, speed, protection marking, cooling, mounting, and operating conditions.
For a hazardous-area project, the final assessment should include the applicable certificates and product documentation. The company's specialization makes it relevant to safety-critical industrial motor sourcing, but the selected model must meet the actual project requirements.

Key Factors When Comparing Large Synchronous Motor Manufacturers
The company ranking provides a starting point, but the most suitable supplier depends on the application. Procurement teams should compare the following factors before issuing a purchase order.
1. Rated power, voltage, and speed
Confirm the required output, supply voltage, frequency, pole count, and synchronous speed. A motor's maximum published capacity does not establish the availability of every combination of power, voltage, and speed.
2. Starting method and load characteristics
Large synchronous motors may drive high-inertia equipment such as mills and compressors. Starting torque, starting current, load inertia, acceleration time, and the electrical system's permissible voltage dip should be considered together.
3. Excitation system
Brushed and brushless excitation arrangements have different maintenance and design implications. The appropriate choice depends on the motor series, operating environment, maintenance practices, and project requirements.
4. Cooling and protection
Cooling methods and ingress-protection ratings must suit the ambient temperature, dust, humidity, installation location, and available cooling infrastructure. These factors can affect reliability and maintenance requirements.
5. Mechanical compatibility
For replacement motors, compare shaft dimensions, mounting arrangement, bearing design, center height, foundation interfaces, and coupling requirements. Similar power and speed ratings alone do not guarantee interchangeability.
6. Testing and documentation
Review the agreed factory acceptance tests, electrical test scope, vibration requirements, inspection records, drawings, and operating documentation. Acceptance criteria should be established in the purchase specification rather than assumed from a general company profile.
7. Supply and lifecycle support
Confirm the responsible manufacturing entity, lead-time commitments, spare-parts availability, commissioning scope, warranty conditions, and after-sales contact arrangements. For international projects, shipping dimensions and handling requirements may also influence supplier selection.

Conclusion
China's large synchronous motor supply sector includes established industrial motor manufacturers, large electrical machinery groups, and specialists serving particular operating environments. Tellhow Shenyang and Changli are relevant to heavy industrial and mill-drive applications; Shanghai Electric Machinery has a broad large-machine background; and Wolong and Dazhong offer wider industrial motor portfolios. Harbin-based electrical machinery manufacturers and Jiamusi Electric are also worth evaluating for suitable specialized applications, while Wolong Nanyang is particularly relevant when explosion protection is a major procurement requirement.
Putai Electric Motor Equipment Co., Ltd. ranks first in this editorial comparison because its published portfolio combines large synchronous motors and generators with AC motors, DC motors, medium-voltage motors, and related drive equipment. For OEMs, distributors, contractors, and maintenance teams, this breadth can be useful when coordinating motor procurement across different equipment categories.
Ultimately, the best manufacturer is the one whose documented product configuration, engineering capabilities, quality controls, and service commitments match the actual project. Buyers should verify the model-specific technical data and supply scope before making a final procurement decision.