Engineered for high-volume rotor, stator, and armature fabrication lines operating across Sihanoukville Special Economy Zone (SSEZ) facilities.
Ultra-reliable hook commutator engineered with high-copper alloy segments and resin insulation for 12V/24V micro-motors, delivering extended carbon brush lifecycle and thermal durability.
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Dual-spindle flyer winding station built for electric motorcycle wheel motors and brushless pump armatures, featuring digital wire tension modulation and CE compliance.
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Industrial heavy-duty armature rotor commutator tailored for starter motors and angle grinder assemblies, guaranteeing dynamic balance under 20,000+ RPM operations.
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Compact commutating element pairing with carbon brush stators in handheld drills, saws, and garden tools, precision-formed to minimize spark emission and contact resistance.
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Sintered rare-earth arc magnets exhibiting exceptional remanence and coercive field strength, custom cut for high-torque permanent magnet synchronous motors (PMSM).
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Corrosion-resistant wet-molded ferrite segments delivering cost-effective magnetic excitation in continuous-duty agricultural and marine washdown pump applications.
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Next-generation high-density copper hairpin production system incorporating automated wire forming, paper feeding, inserting, twisting, and laser welding for EV drives.
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Synchronous twin-needle slot lacing machinery configured for pump and industrial compressor stators, ensuring rigid coil end-turn binding and zero phase-to-phase shorts.
Explore SpecificationsRotor aluminum die casting serves as the quintessential baseline for determining synchronous and asynchronous electric motor efficiency. In traditional induction motor fabrication, the squirrel-cage rotor is created by casting molten aluminum (purity typically ≥99.7% A00 ingot) into the skewed slots of stacked electrical steel laminations. Within the expanding manufacturing zones of Sihanoukville, Cambodia, operations require an exceptional level of thermodynamic stability due to extreme ambient humidity, fluctuating shop-floor ambient temperatures, and the need to hit international standards such as IEC 60034-30-1 (IE3/IE4 super-premium efficiency).
Our custom OEM horizontal and vertical cold-chamber rotor die casting cells incorporate multi-stage hydraulic injection circuits controlled by closed-loop proportional valves. In traditional casting processes, gaseous porosities, air inclusions, and hot tearing in the conductor bars directly translate into high electrical resistance, increased stray load losses, and excessive motor vibration. By utilizing programmable multi-stage velocity injection curves (slow approach ≤0.2 m/s, rapid mold filling ≥3.5 m/s, and ultra-high intensification pressure reaching up to 120 MPa), our equipment guarantees uniform bar density, complete end-ring consolidation, and negligible electrical conductance variance across multi-cavity runs.
| Rotor Parameter | Standard Nakro OEM Spec | Advanced Vacuum-Assisted HPDC | Impact on IE3 / IE4 Compliance |
|---|---|---|---|
| Internal Micro-Porosity | < 2.5% Volumetric Total | < 0.8% with Integrated Evacuation | Eliminates parasitic resistance & hot spots |
| Conductor Bar Skin Effect | Optimized slot-skew angle tooling | Zero-flashing precision core clamp | Mitigates high-frequency harmonic loss |
| End-Ring Structural Density | > 2.68 g/cm³ (High-purity Al) | > 2.70 g/cm³ Controlled Chill | Prevents centrifugal crack propagation |
| Cycle Time (Medium Frame) | 22 – 35 Seconds / Cycle | 18 – 26 Seconds with Robotic Extract | Maximizes factory unit OEE in Sihanoukville |
Coupling these metallurgy-centric injection machines with our automated stator winding, hairpin inserting, and dynamic balancing systems establishes a truly uninhibited turnkey pipeline. Whether manufacturing small fractional-horsepower pumps or heavy industrial tractor motors, the synergy between precise thermal management in tooling and servo-controlled automation preserves strict dimensional tolerances under continuous multi-shift operations.
Adapting robust die-casting infrastructure to meet the operational demands of coastal logistics, green mobility, and agricultural export manufacturing in Preah Sihanouk Province.
Sihanoukville's rapid economic development has accelerated the deployment of electric scooters, delivery trikes, and tuk-tuks. Our rotor casting stations produce balanced BLDC outer-rotors and high-efficiency induction units, allowing local light-electric-vehicle assemblers to lower import duty footprints by sourcing drive cores locally.
As Cambodia's central deep-water seaport hub, coastal industries demand extreme resistance against saline corrosion. We engineer die-casting tooling specifically for copper-free aluminum rotors incorporated into submersible water pumps, marine aeration equipment, and port logistics refrigeration compressors.
Enterprises operating in the SSEZ rely heavily on continuous-duty conveyor systems, sewing machine drives, and centrifugal blowers. Nakro's turnkey lines deliver IE3-compliant squirrel-cage rotors that diminish total kilowatt-hour draw, insulating factory owners against local grid surcharges.
Transforming from an isolated coastal terminal into an integrated high-tech processing enclave under the Cambodia Industrial Development Policy (IDP).
The shift from low-complexity apparel cutting to electronic hardware and electrical machinery assembly is demanding domestic supply chain deep-tiering, placing rotor foundries at the core of value capture.
Export manufacturers leverage Sihanoukville's favorable trade agreements (RCEP, EBA pathways) to deliver complete motor systems globally, necessitating ISO 9001 and CE-traceable casting machinery.
As Cambodia implements stringent electrical standards, the phase-out of inefficient low-tier induction motors forces regional manufacturers to replace outdated casting rigs with closed-loop injection cells.
Modernized PLC touch-screen automation with dual-language interfaces bridges the technical skills gap, enabling Cambodian operators to run complex lamination press-fits and auto-ladling without manual hazard.
Founded in 2010 in Ningbo, Zhejiang—one of the world's most dense manufacturing clusters for electrical engineering—Ningbo Nakro Intelligent Equipment Co., Ltd. commands over 30,000 m² of specialized production plant area. As an ISO 9001 quality management certified organization verified on-site by international third-party auditors, we maintain an annual trade capacity between US$10M and US$50M, supplying machinery to plant owners across Southeast Asia, Eastern Europe, South America, and the Middle East.
Our competitive advantage rests in our dual-engine capability: we do not merely supply stand-alone machinery; we furnish complete turnkey engineering. From raw lamination slot insulating, high-speed flyer/needle coil winding, and commutator hook fusion, to high-pressure rotor aluminum die-casting, progressive lacing, and automated surge/hipot testing stations—every module is designed by our internal R&D team around your bespoke motor blueprints. In parallel, our supply chain division delivers the corresponding precision components, including hook-type commutators, carbon brushes, N52 neodymium magnets, permanent ferrite arcs, and balanced shafts, ensuring that clients in Sihanoukville achieve operational run-off within days of plant commissioning.
Direct technical answers addressing coastal environmental hurdles, machine commissioning, electrical requirements, and procurement terms.
Submit your rotor stack drawings, annual target output, and lamination geometries. Our sales engineering team will deliver a comprehensive machine station proposal, tooling estimate, and plant layout within 24 hours.
