Sunvim Motor
Sunvim Motor
Unlike standard squirrel-cage motors, Slip-Ring (Wound Rotor) motors are essential for applications requiring high starting torque and low starting current. This technical "Information Gain" is critical for heavy-load industrial machinery where mechanical stress reduction is paramount.
Established in 1963, Shandong Sunvim Motor Co., Ltd. brings 60+ years of Experience and Expertise. Our Authoritativeness is backed by Sunvim Group’s multi-billion RMB investment, ensuring Reliability for global procurement.
Our 53,000 m² construction footprint houses the latest in automated machining. We bridge the gap between traditional reliability and future-ready digital control, offering efficiency levels reaching IE5 standards.
The global demand for Slip-Ring motors is undergoing a significant transformation. As industries move toward Decarbonization, the focus is no longer just on raw power but on Energy Efficiency (IE3/IE4/IE5) and intelligent control. Global buyers in mining and metallurgy are increasingly seeking "Wound Rotor" solutions that can integrate with modern Variable Frequency Drives (VFDs) while maintaining the mechanical robustness that only a slip-ring design can provide.
Supply Chain Resilience: In the post-pandemic era, procurement directors are looking beyond price. They prioritize "Supply Chain Resilience." Shandong Sunvim’s vertical integration—from raw material processing to final type testing—provides a buffer against global logistics volatility. Our China Factory 4.0 initiative utilizes laser cutting and 3D coordinate measuring to ensure that every motor meets the exact tolerances required by European and North American standards.
Localized Application Scenarios: Whether it's high-altitude mining in Chile, agricultural irrigation in Southeast Asia, or chemical processing in Germany, the Slip-Ring motor remains the "workhorse" of industry. Its ability to handle long-duration starts and frequent stop-start cycles makes it irreplaceable in heavy-duty conveyor systems and large-scale crushers.
ISO9001:2015
CE Certification
UL Listed
DNV Marine
Slip-ring motors allow for the insertion of external resistance in the rotor circuit, enabling high starting torque (up to 200-250% of full load torque) with a relatively low starting current. This is vital for heavy-load startups like cement mills or large fans.
Our Type Test Center conducts rigorous load testing, vibration analysis, and insulation resistance checks. Every motor undergoes a series of inspections aligned with ISO9001 and international standards (UL, CE, DNV) before shipment.
Yes. We manufacture motors for various voltages (380V to 11kV) and frequencies (50Hz/60Hz) to meet the industrial requirements of Europe, North America, Southeast Asia, and Africa.
Thanks to our Factory 4.0 automation and massive 68,000 m² facility, we offer highly competitive lead times, typically ranging from 4 to 12 weeks depending on the complexity and customization level.
