Lacing Cell
Automatic Double Ends Stator Coil Lacing Machine (PLC Controlled, 10kW)
Dual-End Servo
10kW 220V/380V
Pump/Induction
Automated Equipment Portfolio
High-Efficiency BLDC & Induction Manufacturing Machinery
Engineered for high thermal endurance, precise slot fill factors, and rugged continuous output across high-volume industrial facilities.
Magnetics
Permanent Ferrite Arc Segment Magnet for DC/BLDC Motor Assemblies
12V–220V Rated
High Coercivity
Pump/Drive Core
Coil Inserter
Automatic Single Phase Motor Stator Coil Insertion Machine (CE Certified)
Simultaneous Wedge
PLC Core Station
1-Yr Warranty
Precision Hardware
Custom Precision Stainless Steel 608ZZ Single Row Deep Groove Ball Bearing
Dustproof 608ZZ
10mm ID/20mm OD
CCC Certified
EV Production
Automatic EV New Energy Hairpin Motor Stator Production Line (220V/380V)
Hairpin Geometry
High Slot Fill
CE Certified
Rotor Line
PLC-Controlled Armature Rotor Winding Machine for Industrial Electric Drives
Flyer Winding
Dynamic Balance
Heavy Duty
Commutation
24 Segments Hook Type DC Motor Commutator NDPJ-HXQ-640A (Angle Grinder)
8.4*25*16 mm
Copper-Silver Alloy
Tool Grade
Modular Turnkey
Electric Induction Motor Stator Non-Standard Modular Assembly Line
Modular Scalability
Fast Tooling Shift
PLC Integrated
Industrial Whitepaper: BLDC Automation Architecture for Chongjin's Industrial Base
As the primary industrial hub of North Hamgyong Province, Chongjin represents a critical nexus of metallurgical, mining, port logistics, and heavy machinery manufacturing. Historically reliant on traditional three-phase asynchronous motors and brush-commutated DC prime movers, manufacturing facilities across the Chongjin municipal district are confronting imperative upgrades toward high energy density, spark-free operation, and lower thermal dissipation. Brushless Direct Current (BLDC) and Permanent Magnet Synchronous Motors (PMSM) offer distinct thermodynamic advantages in coastal industrial environments characterized by high salinity, fluctuating thermal envelopes, and intensive dust concentration.
Establishing an OEM/ODM BLDC production line requires deep integration of servo-driven multi-axis needle winding, automated paper insertion, precision lead wire termination, and end-of-line (EOL) dynamometer verification. By automating stator tooth-winding and eliminating manual copper inserting mistakes, engineering plants achieve a continuous copper slot fill factor exceeding 78%, mitigating phase imbalances and dramatically extending operational MTBF (Mean Time Between Failures) within regional ventilation blowers, pump drive assemblies, and heavy haulage equipment.
Chongjin Regional Engineering
Localized Industrial Application Scenarios
Strategic deployment vectors for automated BLDC and induction motor assembly cells designed for Chongjin's core industrial sectors.
Metallurgical Blowers & Auxiliaries
Continuous-duty BLDC drives for cooling circulation pumps, blast furnace exhaust dampers, and ladle ventilation systems capable of handling ambient temperatures exceeding 65°C without dielectric insulation breakdown.
Port Cargo Cranes & Marine Hoists
Harbor-grade BLDC and PMSM motor lines engineered with IP67 sealing, high-torque rotor designs, and anti-corrosive copper/magnet alloys designed specifically for Chongjin Port bulk loading cranes and marine deck winches.
Rail & Mining Locomotion
Ruggedized outer-rotor wheel hub and traction BLDC motor manufacturing lines for underground mineral rail haulage, heavy ore vibrating screens, and continuous coal conveyor drives demanding high starting torque.
Municipal Water & Infrastructure
High-efficiency submersible pump drives and district heating fluid circulation motors engineered with automated coil lacing and precision varnish impregnating cells to eliminate moisture entry and insulation tracking.
Industrial Modernization Trends: Transitioning Chongjin to Intelligent Winding Cells
Industrial procurement strategies within North Hamgyong have historically prioritized mechanically simple, repairable hardware. However, shifting electrical supply dynamics and localized efficiency mandates are accelerating the adoption of solid-state controlled, inverter-driven BLDC systems. Key emerging trends in the Chongjin production ecosystem include:
1. Shift to High-Frequency Needle Winding: Traditional manual winding or flyer winding for slotted BLDC stators results in uneven coil over-hang and wire crossover defects. Modern modular needle winders provide programmable CNC multi-axis trajectory control, allowing local technicians to wind complex 9-slot 6-pole or 12-slot 8-pole stators with uniform tension, minimizing hot spots.
2. In-Line Integrated Inspection: Given the geographical challenges of component sourcing, production lines engineered for Chongjin prioritize integrated real-time quality control (QC). Every automated cell features inline surge testing, high-potential (hipot) dielectric checks (up to 2500V), and micro-ohm coil resistance balancing before stator varnishing, eliminating systemic batch losses.
3. Tooling Flexibility for Multi-SKU Switching: As local factories produce diverse batch runs ranging from agricultural pumps to heavy industrial ventilation drives, lines equipped with quick-change tooling modules allow rapid transition between stack heights (15mm to 120mm) and wire gauges (0.15mm to 1.8mm) within 25 minutes.
Verified Quality Leadership
Why Industrial Procurement Officers Partner with Nakro
Founded in 2010 in Ningbo, Zhejiang, Ningbo Nakro Intelligent Equipment Co., Ltd. (operating with NIDE engineering excellence) has engineered and deployed full-process motor manufacturing equipment worldwide. Combining advanced CNC mechanical engineering with rigorous electrical testing integration, we deliver turnkey solutions customized for specialized regional manufacturing criteria.
ISO 9001 Certified System
Custom OEM/ODM Tooling
Component Supply Synergies
Complete In-House R&D Team
Beyond capital equipment, Nakro supplies matching motor components—commutators, precision ball bearings, permanent ferrite/NdFeB magnets, insulation papers, and carbon brushes—ensuring process stability from raw coil to dynamic spin balance.
Procurement Guide
Frequently Asked Questions for Chongjin Buyers
Detailed technical, logistics, and operational answers addressing local machine integration and maintenance requirements.
How do Nakro BLDC production lines accommodate electrical voltage and frequency fluctuations common in industrial zones? +
All our automated lines integrate multi-stage industrial power conditioning, oversized copper-wound isolation transformers, and wide-tolerance servo drives (rated for ±15% continuous line fluctuations). Critical PLC systems (Siemens/Mitsubishi/Delta) run on dedicated filtered 24V DC power rails protected by industrial surge suppressors, preventing controller crashes or program corruptions during plant brownouts.
Can the production line handle non-standard lamination geometries and varying stack heights? +
Yes. Our R&D engineering team designs custom modular fixtures, winding nozzles, and wedge guide tooling built precisely to your electrical steel drawings. Stack height changes are programmed directly via the HMI touchscreen with quick-clamp pneumatic adjustments, enabling changeovers between different motor series in under 20–30 minutes without remachining stations.
What is the standard procedure for pre-shipment FAT (Factory Acceptance Testing) for overseas clients? +
Every machine cell undergoes an intensive Factory Acceptance Test (FAT) utilizing either client-supplied or matching test-grade laminations, magnet wire, and terminal pins. We perform continuous 8-hour trial runs to verify cycle time, slot fill ratio, winding tension consistency, and dielectric hipot compliance. Clients receive full HD video verification, dimensional CMM inspection reports, and electrical test data prior to crating.
How is equipment crated and protected against sea-freight moisture and harsh coastal weather? +
All machinery is prepared under stringent export packaging standards: machine ways and bare metallic surfaces are treated with industrial anti-corrosion barrier coatings, vacuum-sealed in heavy-gauge vapor-corrosion-inhibitor (VCI) foil bags with silica gel desiccant packs, and enclosed in heavy-duty fumigated wooden export crates engineered for rail and crane lifting.
What spare parts, consumables, and on-site commissioning options are supported? +
We provide a standardized 2-year wear-and-tear consumable package including carbide winding needles, wire tensioners, stripping blades, pneumatic cylinders, and solenoid valves. We support commissioning through both on-site field engineering deployment and exhaustive digital wiring schematics, video commissioning modules, and ladder logic documentation.
Modernize Your Electric Motor Manufacturing with Nakro
Consult with our process engineers to design an optimized, turn-key BLDC or induction motor production layout tailored to your plant footprint and production targets.
