Explore our premium catalog of commercial electric motors. Our range includes high-efficiency standard induction engines, permanent magnet synchronous designs, slip-ring variants, and customized converter-fed technologies manufactured under strict global standards.
With over 60 years of deep-rooted expertise in electric motor research and manufacturing, Shandong Sunvim Motor Co., Ltd. represents the pinnacle of industrial innovation. Following a strategic corporate transformation in 2022, we have rapidly established a high-standard, modernized production ecosystem tailored for the future of global industry.
Backed by the powerful resources of Sunvim Group—a multi-billion RMB conglomerate—Shandong Sunvim Motor Co., Ltd. benefits from strong financial stability and strategic growth. Our expansive facilities house over 400 sets of advanced manufacturing, precision testing, and automated supporting equipment, driving an impressive annual production capacity of up to 3 million kilowatts.
Today, Sunvim Motor has evolved into a premier enterprise seamlessly integrating R&D, world-class manufacturing, global distribution, and dedicated customer service. Driven by the excellence of Sunvim Group, the SUNVIM brand has earned widespread international recognition. Our high-performance electric motors are trusted by global OEMs and industrial buyers across premier markets, including Germany, Italy, Greece, Spain, Belgium, Denmark, South Africa, Slovakia, Australia, Singapore, Indonesia, Malaysia, and Taiwan.
Gaomi Electric Appliance Factory was established. In 1988, renamed as Weifang Electric Machinery Factory.
Mr. Sun, then the factory director, left the Gaomi Electric Appliance Factory and set up Gaomi Towel Factory, the predecessor of Sunvim.
Weifang Electric Machinery Factory was acquired by Sunvim, Shandong Sunvim Electrical Machinery Co. Ltd. was established.
A new factory was completed in Sunvim industrial park and renamed as Shandong Sunvim Motor Co. Ltd., scaling production capacity and implementing AI-driven processes.
Uncompromising reliability demands precise manufacturing. Sunvim Motor deploys automated, computer-numerical controlled (CNC) systems alongside high-precision coordinate testing to ensure micro-millimeter tolerance parameters in our 4-pole configurations.
In rotational machinery, a 4-pole motor utilizes two pairs of magnetic poles (North and South) acting across the stator winding geometry. Unlike a standard 2-pole motor that rotates at roughly 3000 RPM (at 50Hz grid frequency), a 4-pole electric motor operates at a synchronous speed of 1500 RPM at 50Hz (and 1800 RPM at 60Hz). This slower speed inherently shifts the output energy of the motor, yielding a significantly higher torque profile relative to its kilowatt frame rating.
Industrial machinery components like pumps, compressors, and ventilation fans typically demand operating speeds between 1000 and 1800 RPM. Selecting a 4-pole motor eliminates the need for expensive, high-maintenance reduction gearboxes. By operating closer to the load’s natural operating profile, system loss is minimized, resulting in enhanced system efficiency that satisfies IE3, IE4, or even IE5 regulations. Our OEM options leverage high-grade cold-rolled silicon steel laminations to lower core losses, accompanied by precise copper winding paths that decrease stator electrical resistance.
Slower speeds provide greater mechanical torque per frame footprint, protecting drive shafts and connected machinery from premature wear.
Designed for continuous S1 operation. Superior thermal distribution ensures windings operate within structural thresholds under prolonged loads.
Engineered for integration with Variable Frequency Drives (VFD). Suitable for variable-speed configurations without magnetic saturation issues.
Purchasing directly from an established Chinese motor factory provides substantial advantages in terms of supply chain integration and cost efficiencies. At Shandong Sunvim Motor Co., Ltd., we combine localized raw material access with strict European and American production control standards.
The global motor market is shifting toward higher efficiency ratings and smart controls. Major trends shaping 4-pole motor development include:
Under international standards, minimum efficiency regulations are rising. Sunvim leads this transition by offering ultra-high efficiency asynchronous models alongside advanced PM-Synchronous motors that lower operating costs.
Modern applications require variable-speed capability. High-performance models like the YVF series are designed to withstand the higher thermal loads and harmonic conditions associated with inverter controls.
Future operations rely on predictive maintenance. Sunvim motors can be configured with thermal sensors and vibration monitors, helping prevent unexpected downtime through real-time telemetry.
From heavy-duty marine propulsion to industrial chemical processing, our motor solutions are designed for demanding, continuous-duty environments.
Our manufacturing processes comply with strict quality control frameworks. Shandong Sunvim Motor holds key international certifications, ensuring compliance with global industrial safety and performance guidelines.
ISO9001:2015
CE Compliance
UKCA Certification
UL Listing
SABS Standard
CCS Marine Approval
ABS Marine Certification
DNV Quality Seal
Explore additional products from our specialized engineering range, designed to meet the requirements of energy-efficient projects worldwide.
Premium performance and high power density for standard industrial setups.
Rotor designs engineered without rare-earth magnets to deliver optimal mechanical efficiency.
Robust power solutions designed for heavy-duty mining, metallurgy, and water distribution networks.
Custom frames, specialized shafts, and specific IP enclosure protection ratings built for harsh process applications.
For procurement professionals, EPC contractors, and plant engineers, specifying an electric motor requires careful alignment of mechanical and electrical design parameters. Use this checklist to verify structural compatibility prior to placing volume orders:
Determine the required mounting layout according to IEC or NEMA guidelines (e.g., foot-mounted B3, flange-mounted B5, or face-mounted B14). Frame sizing (such as 80M through 355L) must align with shaft heights and keyway clearances in the existing assembly.
Ensure wind specifications match the local voltage and frequency (e.g., 380V/50Hz, 460V/60Hz). For speed-controlled applications, specify converter-fed designs (like the YVF series) equipped with insulated non-drive-end bearings to prevent damage from parasitic shaft currents.
Select protection levels based on operating conditions. Standards range from IP55 for moisture protection in ventilation ducts to IP56 or IP66 for saltwater exposure on ship decks. For high-humidity environments, integrated space heaters should be requested.
Specify Class F insulation with Class B temperature rise limits to provide thermal headroom during peak operation. For high-efficiency applications, request premium cold-rolled non-oriented silicon steel sheet cores to minimize losses.
Technical answers to help buyers evaluate performance metrics, efficiency ratings, and custom manufacturing options.
Sunvim Motor
