Inner-Rotor Core
Bore, tooth shape, slot opening and stator OD for housing fit are controlled to maintain the internal rotor air gap.
BLDC Motor · Low-Loss Stator Core
BLDC Motor Stator Core Manufacturer
Custom BLDC stator cores and lamination stacks manufactured from low-loss electrical steel to your drawings, for both inner-rotor and outer-rotor motor applications.
- BLDC stator core / lamination stack only
- 0.10–0.50 mm low-loss laminations
- 30–500 mm OD and 10–200 mm stack-height reference range
Core configurations
BLDC Motor Core Options
Each structure is reviewed against the electrical-steel lamination drawing, stack method, critical datums and inspection requirements.
BLDC Motor Stator Core Technical Specifications
| Parameter | Specification / Range |
|---|---|
| Product Type | BLDC motor stator core / electrical-steel lamination stack |
| Material Grade | 10A1200–50W470 non-oriented electrical-steel reference family (JIS C 2552 / GB T 2521); 0.10–0.20 mm high-frequency grades selected per project |
| Lamination Thickness | 0.10–0.50 mm; 0.10–0.20 mm for high-frequency BLDC, 0.35–0.50 mm for standard-frequency applications |
| Outer Diameter | 30–500 mm reference range |
| Stack Height | 10–200 mm reference range; selected special projects evaluated up to 300 mm |
| Slot Number | 6–72 slots; final slot/pole combination follows the motor drawing, including fractional-slot concentrated winding configurations |
| Magnetic Flux Density | ≥1.69 T at B₅₀ (5000 A/m), per IEC 60404; ≥1.60 T minimum across the grade range |
| Core Loss | 2.3–4.7 W/kg at 1.5 T, 50 Hz, grade-dependent (per IEC 60404-2); high-frequency loss tested at specified frequency and flux density |
| Burr / Flatness | Burr ≤0.02 mm (sheet ≤0.35 mm) / ≤0.03 mm (sheet 0.50 mm); Flatness ≤0.03 mm (OD ≤200 mm) / ≤0.06 mm (OD 200–500 mm), per drawing |
| Operating Temperature | –40°C to +180°C, subject to material coating and validation |
| Supply Boundary | BLDC stator iron core only; copper winding, terminals, bus bars, sensors, impregnation and electrical winding tests are excluded |
Core capability
Four Parameters for Initial Engineering Review
Each point combines a measurable range with its relevance to stator-core sourcing. Final values are confirmed against the approved drawing and test condition.
- Thin Laminations
- 0.10–0.50 mm laminations, including available 0.10 / 0.15 / 0.20 mm options for high-frequency loss control.
- BLDC Size Range
- 30–500 mm OD and 10–200 mm stack height cover common compact and industrial BLDC core projects.
- Slot & Magnetic Design
- A 6–72 slot screening range plus ≥1.6 T conditional flux target and grade-dependent core loss support drawing-level electromagnetic review.
- Precision Targets
- Conditional burr ≤0.02 mm and flatness ≤0.03 mm (size-dependent) support narrow air gaps and consistent stack geometry.
Product and supply scope
What is a BLDC Motor Stator Core?
A BLDC (brushless DC) motor stator core is the stationary magnetic circuit of a brushless DC motor, built from stacked low-loss electrical-steel laminations. It carries the slot geometry, tooth width, bore, outer diameter, stack height, material grade, and joining method defined by the motor design. BLDC stators often operate at higher frequencies than line-frequency induction motors, making low-loss material selection and thin-gauge laminations critical to motor efficiency.
GX supplies this stator iron core as a stamped and stacked lamination assembly, produced strictly to the customer's approved drawing. Copper wire, coils, winding, terminals, bus bars, sensors, VPI (Vacuum Pressure Impregnation), and winding electrical tests are excluded from the supply scope.
Core-only supplyThe deliverable is the stator iron core or lamination stack, manufactured and inspected to the approved drawing revision.
Material controlElectrical-steel grade, insulation coating, and lamination thickness are locked at initial sample approval and remain fixed for series production.
Dimensional controlOD, bore, tooth width, slot geometry, stack height, and reference datums are verified against the released drawing.
Excluded scopeCopper winding, coil insertion, VPI, winding-related assembly, and winding electrical tests are not included in the supply scope.
Core manufacturing route
From Drawing Review to Approved Stator Core
The route focuses on electrical-steel selection, lamination geometry, stacking, joining and dimensional inspection.
Drawing Review
OD, bore, slots, tooth width, yoke, stack height, datums and demand are checked.
Material Review
Electrical-steel grade, thickness, insulation coating, 50 Hz reference loss and high-frequency loss characteristics (per IEC 60404) are confirmed.
Tooling Route
Laser-cut samples for prototyping and thin-gauge (≤0.20 mm) laminations; stamping tooling for volume production and standard-gauge (≥0.35 mm) laminations — selected based on order volume and part geometry.
Lamination Production
Slot profile, bore, OD, burr (process-dependent: laser-cut ≤0.01 mm, stamped ≤0.02 mm), and lamination flatness follow the drawing requirements.
Stack and Join
Interlocking, bonding, welding, riveting or clamping is applied as specified.
Core Inspection
OD, bore, tooth width consistency, slot opening symmetry, stack height, flatness, concentricity, runout, burr, and core loss verification are inspected and recorded.
Core inspection
Inspection Connects Lamination Quality to Motor Fit
The control plan follows the approved drawing and customer-approved dimensional or magnetic test conditions.
| Inspection Item | Control Approach | Buyer Relevance |
|---|---|---|
| OD / bore / slots / tooth width | OD and bore checked by CMM or precision gauges; slot profile and tooth width consistency verified against the drawing | Controls housing fit, rotor clearance, slot consistency and cogging torque |
| Stack height | Measured after the specified stacking and joining process | Controls active length and motor assembly position |
| Burr / flatness | Burr ≤0.02 mm (sheet ≤0.35 mm) / ≤0.03 mm (sheet 0.50 mm); Flatness ≤0.03 mm (OD ≤200 mm) / ≤0.06 mm (OD 200–500 mm), per drawing | Supports lamination contact, interlaminar insulation and stack fit |
| Concentricity / runout | Bore and outer datums evaluated against the approved inspection plan | Supports stable rotor air gap for low-noise BLDC operation |
| Material / loss | Material grade records, 50 Hz reference loss, and high-frequency loss verification linked to the project electromagnetic design | Connects supplied steel to the approved motor efficiency target |
Application fit
Where BLDC Motor Cores Fit Motor Projects
Application suitability depends on material grade, lamination thickness, slot geometry, stack dimensions, joining method and operating duty.
Drone and RC Motors
Thin laminations and compact slot geometry are evaluated for speed, loss and weight constraints.
Pumps and Fans
Bore, stack height and housing interfaces are controlled for repeatable air-gap assembly.
Power Tools
Material grade, tooth geometry and stack joining are matched to high-speed intermittent duty.
Robotics and Servo Drives
Low-loss materials and precise datum control support compact BLDC motor architectures.
Quality-system support
Drawing and Change Control for Stator Iron Cores
GX Magnet applies its IATF 16949 quality system to drawing revision, material confirmation, sample approval and project-defined core inspection.
Revision ControlMaterial, lamination geometry, stack method and datums follow the approved revision.
Sample ApprovalInitial dimensions and agreed inspection results are recorded before recurring production.
Production InspectionInspection scope and sampling expectations are aligned before release.
Project-specific inspection records and magnetic data can be provided according to the approved drawing and agreed test conditions.
Buyer communication
Bring the Stator-Core Drawing, Not Only a Product Name
GX uses industrial exhibitions to discuss electrical-steel materials, stator-core structures and drawing-based manufacturing with OEM engineers and sourcing teams.
Bring OD, bore, slot profile, stack height, material grade, annual demand and inspection requirements to define the quotation route.
Core ReviewCompare one-piece, segmented, straight and skewed stack options.
Engineering DiscussionReview material, slots, datums, fit and operating duty.
Supplier EvaluationPlan drawing control, samples, inspection evidence and recurring communication.
GX Magnet
Magnetic-Material and Motor-Core Experience Since 1992
GX Magnet supports drawing-based stator iron-core and magnetic-component projects for automotive, appliance, pump, HVAC and industrial applications.
Material ReviewElectrical-steel grade, thickness and coating are matched to the stated duty.
Drawing-Based ProjectsGeometry, tooling, samples and inspection criteria follow approved revisions.
OEM CommunicationEngineering and sourcing teams receive a clear RFQ input list and core-only supply boundary.
30+ Years Serving Clients Worldwide
FAQ
BLDC Motor Stator Core Sourcing Questions
These answers define the stator iron-core supply scope and initial engineering review.
What does GX supply on this page?
GX supplies the electrical-steel stator iron core or lamination stack defined by the approved drawing.
Does the supplied stator core include winding?
No. Copper wire, coils, winding, terminals, bus bars, VPI and winding electrical tests are not included.
Are the published ranges guaranteed for every design?
No. They are initial screening ranges. Final capability depends on material, geometry, tooling, stack method and inspection requirements.
What should an RFQ contain?
Provide 2D/3D drawings, material grade, lamination thickness, OD, bore, slot geometry, stack height, critical tolerances, sample quantity and annual demand.
Request for quotation
Request a Quote for BLDC Motor Stator Core
Include the stator-core drawing, material, dimensions, stack method, inspection requirements, sample quantity and annual demand.
- OD, bore, slots, tooth, yoke, stack height and datums
- Electrical-steel grade, thickness, coating and loss target
- Joining method, burr, flatness, concentricity and runout
- Operating duty, sample quantity and annual demand