Precision-engineered solutions factory-direct from Dongguan, tailored to DIN EN 60034 industrial standards and CE regulatory requirements for the Zagreb industrial hub.
HONGFANG Motor Stator Coil Forming & Shaping Machine 1 kW
Technical Whitepaper: Precision Stator Coil Forming Dynamics in Modern Electrification
In modern rotary machine assembly, stator coil shaping (also referred to across European mechanical sectors as end-turn forming or coil head profiling) governs both the electromagnetic air-gap tolerance and the dielectric safety margins of the machine. The industrial basin surrounding Zagreb, extending across Sisak-Moslavina, Karlovac, and the northern Croatian manufacturing corridors, maintains rigorous engineering benchmarks for low-voltage industrial drives, high-torque traction assemblies, subsea pumps, and domestic ventilation systems.
During automated coil insertion, copper magnet wires experience dimensional expansion along the axial boundaries of the lamination stack. If left unformed, the flared end windings interfere with outer cast-aluminum end brackets, breach creepage clearances to ground, and suffer uneven mechanical resonance under high inverter switching frequencies (PWM-induced surge voltages). Zunqi's automated stator coil shaping systems utilize a progressive dual-stage forming protocol: Intermediate Cold Expansion and Final Hydraulic Multi-Axis Sizing.
Controlled Expansion Cycle
Multi-segmented internal expanding fingers gently widen the inner bore clearance, clearing an unobstructed path for the rotor insertion stage without scuffing slot liners.
Enamel Film Integrity
Custom polished tooling finished with TiN (Titanium Nitride) micro-coatings eliminates the friction risk that causes micro-cracking in grade 2 polyester-imide wire insulations.
Radial Compacting Force
Hydraulic downward and circumferential clamping consolidates end coils to fixed envelope heights, enabling streamlined casing clearance and enhanced heat convection.
Unlike rudimentary pneumatic presses that deliver inconsistent terminal heights across varying slot fill rates, our flagship HF-W120H Second Shaping Machine incorporates closed-loop hydraulic displacement feedback. When manufacturing stator stacks with lamination heights spanning 10 mm to 160 mm and outer diameters up to 160 mm, our mechanical positioning stops ensure axial repeatability within ±0.05 mm. This volumetric consistency eliminates hot spots within enclosed IP55/IP66 terminal housings standard throughout the EU market.
Zagreb Regional Engineering Trends: Eco-Design Directives & Automation Upgrades
As Croatia integrates deeper into the Central European technological supply chain, manufacturers based in Zagreb, Samobor, Velika Gorica, and Sesvete are undergoing rapid mechanical re-tooling. The transition driven by the European Union's Commission Regulation (EU) 2019/1781 (mandating IE3 and IE4 efficiency standards for induction and synchronous electric motors) demands substantially higher slot fill factors—frequently exceeding 75% to 80%.
Higher slot copper density directly escalates the mechanical difficulty of manual or semi-automated coil insertion and subsequent forming. Thick gauge winding configurations or tight multi-parallel stranded wire arrays exhibit violent elastic springback. Traditional manual hammering or lever-actuated fixtures cause slot insulation paper slippage, inter-turn partial discharge, and phase-to-phase shorts under CE dielectric tests.
IE3 & IE4 Premium Efficiency Lines
Designed to compress bulky, high-fill copper bundles without deforming slot closure wedges, maintaining rigid winding symmetry for superior magnetic flux uniformity.
HVAC & Clean Energy Pump Systems
Ensuring ultra-compact end-turn dimensions for specialized hermetic compressor stators and submersible circulators built by Croatian OEM exporters.
Custom Servo & E-Mobility Assemblies
Equipped with configurable CNC-interpolated servomotors suitable for custom-wound BLDC and permanent magnet stators requiring non-symmetrical axial clearance.
Headquartered in the global manufacturing epicenter of Qishi Town, Dongguan, China, Zunqi Intelligent Equipment Co., Ltd. (incorporating HONGFANG machinery technologies) has delivered dedicated motor line manufacturing solutions for more than 17 years. Our facility bridges advanced high-capacity automation manufacturing with custom European technical compliance.
Tooling Tailored to Spec
Every set of shaping dies, expansion mandrels, and guide jaws is precision-machined from hardened Cr12MoV die steel according to your 2D/3D CAD laminations and winding schedules.
Unified Motor Line Architecture
We deliver an end-to-end synchronized ecosystem: slot insulation inserting, automated multi-spindle coil winding, simultaneous coil & wedge insertion, intermediate forming, double-side lacing, and final hydraulic sizing.
Global Component Architecture
To assure seamless operational integration in Croatian manufacturing plants, our PLC control cabinets, HMI panels, and switchgear can be configured directly with Siemens, Schneider, Omron, SMC, or Airtac units.
Operating across a verified footprint staffed by 51 to 100 seasoned engineering and assembly specialists, Zunqi maintains complete pre-shipment trial-run transparency. Before any machine destined for Zagreb is packaged in anti-corrosion VCI barrier foil and fumigation-free sea containers, we run your physical sample laminations on our factory floor, delivering comprehensive video testing and coordinate metric validation.
Procurement Clarity
Frequently Asked Questions by Zagreb Motor Manufacturers
Addressing the technical, commercial, and operational considerations of importing factory-direct motor equipment into Croatia.
What electrical grid parameters are supported for installation in Croatia?
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Our machinery is configured to meet European CEE standards natively: 400V Three-Phase ±10% or 230V Single-Phase at 50Hz. All control cabinets adhere to strict low-voltage directives, featuring clean terminal layouts, CE-marked safety contactors, and industrial emergency stop circuits. Tell us your facility's exact on-site voltage before engineering kick-off.
How do you prevent insulation paper damage during intermediate and final shaping?
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Our forming tooling incorporates dedicated slot-wedge holding fixtures and synchronized boundary limiters. During downward hydraulic expansion, the machine securely grips the teeth faces and slot openings, preventing slot cell liners (such as DMD, NMN, or Nomex) from shifting axially or flaring outward. This preserves creepage distance integrity and eliminates flashover defects.
Can one shaping machine handle multiple stator stack heights and frame sizes?
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Yes. Our forming machines feature modular, quick-change tooling cartridges. Stators with identical internal/external diameters but varying stack heights (e.g., IEC 80 short, medium, and long frames) require only a simple digital height offset adjustment on the HMI screen and mechanical spacer tuning, achievable in under 10 minutes. For different lamination diameters, a complete die set changeover takes less than 30 minutes.
What is the typical shipping lead time and customs protocol to the Port of Rijeka or Zagreb?
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Manufacturing lead times for custom-tooled machines typically range between 25 and 35 working days. Ocean freight from Shenzhen/Guangzhou to the Adriatic hub of Port of Rijeka spans approximately 28 to 32 days, followed by customs transit to the Zagreb inland container terminal. We provide complete CE declarations of conformity, export documentation, packing lists, and commercial invoices to simplify customs clearance under Croatian import procedures.
What warranty and technical commissioning guarantees do you offer overseas buyers?
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All Zunqi equipment includes an unconditional 1-year mechanical and electrical parts warranty. We provide comprehensive remote commissioning support via real-time high-definition video walkthroughs, accompanied by full English schematic drawings, PLC logic descriptions, and operational manuals. In addition, critical wearing parts (such as forming springs, seals, and guide pins) are packed in redundant quantities inside the shipping crate.
Modernize Your Stator Line with Factory-Direct Engineering
Consult with our senior tooling engineers today. Send your stator CAD drawings, wire configurations, and production volume targets to receive an exhaustive technical quotation within 9 hours.
