Direct-drive in-wheel motors (outer rotor stators) demand specialized kinematics that standard internal-stator winders cannot deliver. Explore our tailored machinery engineered for optimal copper packing, zero wire stretch, and robust industrial continuous throughput.
Engineered expressly for multi-pole electric motorcycle and e-scooter hub drives. Features synchronized multi-axis servo coordination that moves the winding nozzle smoothly around external tooth slots. Equipped with programmable constant-tension feedback to wind single or multi-parallel enameled copper wires without varnish scuffing.
A full turnkey manufacturing solution bridging lamination insulation, precision stator winding, copper hook welding, lead wire soldering, PCB hall sensor integration, rotor permanent magnet insertion, motor case press-fitting, and end-of-line electrical & torque characteristic testing.
Designed for medium- to high-power brushless hub motors where rapid cycle times and automated transfer conveyors are essential. Integrates automatic stator loading, multi-nozzle needle winding stations, high-frequency end-lead stripping, intermediate shaping, and hipot breakdown testing into an interconnected workflow.
Global buyers sourcing equipment for light electric vehicles, commercial last-mile fleets, and specialized EV applications face shifting procurement criteria driven by thermal limits and high-efficiency benchmarks.
Traditional in-wheel hub motors suffered from thermal buildup under steep torque inclines. In response, Tier-1 powertrain procurement specialists now prioritize winding equipment engineered with precision layer-by-layer wire laying nozzles over conventional bulk flyer winding. Achieving slot fill factors between 48% and 54% lowers copper winding resistance ($R_{DC}$), cuts $I^2R$ heat dissipation, and drastically increases operational range without expanding hub diameter.
To overcome high-frequency skin effect and enable flexible heat dissipation, newer wheel motors mandate winding with up to 10–24 parallel fine copper strands simultaneously. Equipment buyers seek machines equipped with individualized multi-spool magnetic hysteresis or servo tensioners to eliminate strand crossover, slack loops, and tension variance across the winding bundle.
Given volatility in regional EV subsidies, procurement directors avoid monolithic unchangeable lines. The modern sourcing strategy favors modular, cell-based wheel motor stator winders that allow standalone manual loading during pilot pre-series runs, followed by rapid integration with robotic gantry loaders or pallet transfer systems when full production begins.
Direct in-wheel propulsion shifts mechanical complexity into electromagnetic and manufacturing precision. Key engineering evolutions are reshaping how stator cores are insulated, wound, and assembled.
While concentrated winding around teeth dominates light e-mobility, heavier commercial wheel hubs are testing segmented tooth construction and continuous wave winding geometries to optimize coil head dimensions and minimize resistive copper losses.
Modern winders eliminate mechanical friction tensioners in favor of brushless servo-driven wire feeding. Dynamic braking compensates in real-time for non-circular winding geometries, ensuring constant gram-force tension regardless of turret angular speed.
Hub motor housings provide minimal axial clearance. Modern production systems integrate cold-press coil compaction tooling directly after winding to compact end-turns radially and axially, ensuring zero interference with rotor magnets and outer end-bells.
High-resolution machine vision modules continuously inspect slot tooth entry and lead routing, while built-in impulse surge testers detect microscopic pinholes in enamel coatings before stators advance to encapsulation or impregnation stations.
A dedicated engineering manufacturer driving electric motor automation worldwide with proven custom tooling, turnkey line delivery, and complete component sourcing integration.
Founded in 2010 in Ningbo, Zhejiang, Ningbo Nakro Intelligent Equipment Co., Ltd. focuses on one core mission: making electric motor production streamlined, reliable, and cost-efficient for global manufacturers. We design, machine, assemble, and commission stand-alone machines, semi-automatic cells, and fully automated turnkey production lines for armature, stator, and complete wheel motor assembly.
Beyond specialized equipment, our buyers benefit from an integrated supply chain. We supply precisely matched motor components—including commutators, ball bearings, carbon brushes, insulation paper, precision shafts, high-grade NdFeB magnets, cooling fans, and aluminum die-cast covers. Backed by comprehensive technical consulting for novel hub motor R&D, Ningbo Nakro Intelligent Equipment Co., Ltd. shoulders total accountability from initial stator drawing review to high-yield series production.
Investing in motor winding infrastructure demands operational certainty. Here is why international powertrain manufacturers choose Ningbo Nakro Intelligent Equipment Co., Ltd.
Custom Nozzles & Chucks
Pre-Shipment Validation
Worldwide Commissioning
Transparent business terms, certified credentials, and factory operating parameters.
| Company Name | Ningbo Nakro Intelligent Equipment Co., Ltd. |
|---|---|
| Business Scope | Manufacturer, Turnkey Engineering Solutions |
| Year Established | 2010 |
| Facility Scale | 30,000 – 50,000 m² heavy assembly workshops |
| Workforce | 101 – 200 dedicated engineers, technicians & operators |
| Applicable Motor Types | Outer-rotor hub motors, e-mobility drives, BLDC, stators, armatures |
| Customization Scope | Tooling design, wire nozzle geometry, MES integration, turnkey automation |
| Payment Terms | T/T, L/C (USD, EUR, CNY) |
| Incoterms Supported | FOB Ningbo/Shanghai, CFR, CIF, DDU/DDP by agreement |
| Contact Email | [email protected] |
With over 13 years of overseas export experience, we mitigate the risks inherent to complex capital equipment sourcing.
Clear engineering answers to the technical and commercial questions global powertrain buyers and manufacturing engineers ask most.
Share your motor drawings, slot configurations, and target annual volume. Our powertrain engineering team at Ningbo Nakro Intelligent Equipment Co., Ltd. will provide a complete technical proposal and cycle time estimate.
[email protected]