EV Stator Core Manufacturer
High-Precision EV Stator Cores for Electric Vehicle Traction Motors
Custom EV stator core solutions with high dimensional accuracy, low core loss, and excellent magnetic performance.
What is EV Stator Core?
The EV stator core is one of the most critical components in an electric vehicle motor. Manufactured from high-grade non-oriented electrical steel laminations, it forms the magnetic circuit that converts electrical energy into mechanical power. Precision manufacturing directly affects motor efficiency, torque density, thermal performance, and overall vehicle driving range.
EV Stator Core View
Our Product Features
High Dimensional Accuracy
Tight control of critical dimensions and slot geometry.
Low Core Loss
Optimized electrical steel and precision processing for improved motor efficiency.
High Magnetic Performance
Consistent magnetic properties for stable motor operation.
Precise Stacking
Controlled stack height, flatness, and concentricity.
Low Burr Height
Precision stamping minimizes burrs and reduces electrical losses.
Customizable Designs
Manufactured according to customer drawings and motor specifications.
Multiple Joining Technologies
Interlocking, laser welding, and bonding available.
Consistent Quality
Multi-stage inspection throughout the manufacturing process.
Fast Delivery Time
Within short time.
High-Precision EV Stator Cores Engineered for Efficient, Reliable, and High-Performance Electric Motors.
Product Specifications
Specification
Typical Options / Description
Core Type
EV Traction Motor Stator Core
Material
Non-Oriented Electrical Steel (NGO)
Steel Grade
Customized according to motor design
Lamination Thickness
0.20 / 0.25 / 0.30 / 0.35 / 0.50 mm
Outer Diameter (OD)
Customized
Inner Diameter (ID)
Stack Height
Slot Number
Customized
Customized
Customized
Slot Type
Open / Semi-Closed / Customized
Lamination Shape
Stator Lamination
Stacking Method
Interlocking / Welding / Bonding
Welding Method
Laser Welding, if required
Bonding Method
Adhesive Bonding, if required
Insulation Coating
According to electrical steel specification
Dimensional Tolerance
According to customer drawing / agreed specification
Concentricity
Controlled according to customer requirements
Flatness
Controlled according to customer requirements
Burr Height
Controlled according to agreed specification
Surface Treatment
As required
Inspection
Dimensional, flatness, concentricity, burr, stack height, appearance, core loss
Customization
OEM / ODM available
Application
EV Traction Motors, E-Mobility Motors
Material Selection
BAOSTEEL
SHOUGANG
TISCO
High-Performance Electrical Steel
Selected electrical steel grades with low core loss, high magnetic permeability, and stable magnetic performance for EV traction motors.
Low Core Loss — Reduced energy loss
High Magnetic Permeability — Improved motor efficiency
Controlled Lamination Thickness — Optimized electromagnetic performance
Custom Material Grades — Matched to motor design requirements
The material is sourced from
Our Manufacturing Capability
Precision Stamping
High-speed progressive stamping with tight dimensional and burr control for advanced EV motor applications.
Advanced Stacking
Automated stacking, compression and skewing technology for high-precision stator cores.
Precision Tooling
In-house progressive die design, manufacturing, maintenance and optimization.
Core Joining
Laser welding, bonding and mechanical joining technologies with controlled process parameters.
Quality & Inspection
Automated dimensional inspection, SPC, Cpk monitoring and full production traceability.
Magnetic Performance
Core loss, magnetic flux density and insulation performance verification.
Automation
Integrated automated production, robotic handling, vision inspection and MES traceability.
EV Motor Expertise
Specialized manufacturing solutions for high-speed, high-power-density and low-loss traction motors.
Advanced manufacturing capabilities for high-precision, high-performance EV stator cores.
Manufacturing Process
Electrical Steel Selection
Progressive Stamping
Lamination Inspection
Automatic Stacking
Interlocking / Laser Welding / Bonding
Compression & Forming
Final Quality Inspection
Packaging & Global Shipping
Select suitable non-oriented electrical steel according to the motor design, magnetic performance, core loss requirements, and lamination thickness.
High-speed progressive stamping produces precision stator laminations with controlled slot geometry, inner diameter, outer diameter, and burr height.
Stamped laminations are inspected for dimensional accuracy, burr height, surface condition, and critical geometric features.
Precision laminations are automatically aligned and stacked to achieve the required stack height, orientation, and dimensional consistency.
The stacked laminations are secured using interlocking, laser welding, bonding, or a combination of methods according to the motor design.
Controlled compression and forming help achieve the specified stack height, flatness, concentricity, and structural stability.
Finished stator cores undergo dimensional, flatness, concentricity, burr, appearance, stack height, and other required inspections.
Inspected stator cores are securely packaged to prevent deformation, contamination, and damage during transportation.
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Quality Control
Incoming Material Inspection
Verify electrical steel grade, thickness, surface condition, and material certificates before production.
Dimensional Inspection
Check critical dimensions including inner diameter, outer diameter, slot geometry, and key tolerances.
Burr Inspection
Control stamping burr height to minimize insulation damage, eddy-current losses, and assembly issues.
Flatness Inspection
Inspect lamination and core flatness to ensure stable stacking and accurate motor assembly.
Concentricity Inspection
Verify the concentricity of the stator core to maintain precise rotor-stator alignment and consistent air gaps.
Stack Height Inspection
Control core stack height and compression to ensure consistent magnetic performance and mechanical dimensions.
Core Loss Testing
Test electrical and magnetic performance when required to verify compliance with specified material and design requirements.
Final Inspection
Perform comprehensive dimensional, visual, and functional checks before packaging and shipment.
Consistent Quality for High-Performance EV Stator Cores
Applications
Designed for high-efficiency EV traction motors, supporting reliable performance across a wide range of electric mobility applications.
Frequently Asked Questions
Can you manufacture according to customer drawings?
Yes. We manufacture custom stator and rotor cores according to customer drawings, 2D/3D CAD files, specifications, and technical requirements. Our engineering team reviews critical dimensions, tolerances, electrical steel grade, lamination thickness, stacking method, welding or bonding requirements, and inspection criteria before production.
For new projects, we can also provide DFM (Design for Manufacturing) review to identify potential manufacturing risks and optimize tooling, stamping, stacking, and joining processes. This helps ensure the final core meets the required dimensional accuracy, magnetic performance, assembly requirements, and production consistency.
Do you support prototype production?
Yes. We support prototype and sample production for new stator and rotor core projects. Our engineering team can review customer drawings, material specifications, lamination geometry, tooling requirements, and assembly methods before manufacturing.
Prototype production helps customers verify core dimensions, stacking accuracy, welding or bonding quality, and magnetic performance before moving to small-batch or mass production. We can then optimize tooling and manufacturing parameters based on prototype results to support a smooth transition to volume production.
Which electrical steel grades are available?
We can work with a range of non-oriented electrical steel (NOES) grades from qualified steel suppliers, with material selection based on the required core loss, magnetic flux density, lamination thickness, motor speed, and application.
Common options include thin-gauge electrical steel for high-speed and EV motors, as well as standard grades for BLDC, servo, industrial, and other motor applications. We can manufacture according to customer-specified steel grades or agreed material specifications, with material certificates and incoming inspection available for quality verification.
For a new project, we recommend selecting the grade based on the motor's operating frequency, maximum flux density, efficiency target, temperature, and core-loss requirements, rather than choosing a grade based on thickness alone.
Upload your CAD files and detailed specifications for a rapid review by our metallurgical and die design engineers. We are ready to assess your project requirements with precision and efficiency.