Grain Oriented Electrical Steel Motor Stator Core in China
We are a China manufacturer of grain oriented electrical steel motor stator core teeth for high-performance motors. Focused on high-power-density PMSM motor and drone motor, we produce GOES stator cores, including segmented tooth-yoke structures and customized lamination designs.
We deliver low-loss, high-efficiency GOES stator stacks to global customers in new energy, industrial drives, and high-efficiency motor industries.
Customize Grain Oriented Electrical Steel Stator Stacks
We specialize in manufacturing high-performance grain oriented electrical steel (GOES) stator core teeth, mainly including dovetail slot embedded teeth (DSST) and snap‑fit embedded teeth (SOST).
Most traditional PMSM stators use non‑oriented electrical steel (NOES), which has disordered grain structure and limited magnetic performance. With the trend toward smaller, higher‑density motors, NOES can hardly meet demands for high saturation flux density and low iron loss. Amorphous alloys offer low high‑frequency loss but are difficult to machine.
In contrast, GOES features strong magnetic anisotropy, extremely high permeability and ultra‑low core loss along the rolling direction.
In addition, magnetic flux in axial flux motor stator teeth flows mainly in a single axial direction, which allows the use of grain-oriented electrical steel. This material offers extremely high magnetic permeability and ultra-low loss in the rolling direction, which can improve efficiency by 1%–2%.
Also, we can manufacture GOES transformer lamination, if you need it, please contact us.
Grain Oriented Electrical Steel dovetail slot embedded teeth
GOES stator snap‑fit embedded teeth
Grain Oriented Electrical Steel Stator Core
GOES Material for Stator Lamination Stacks
We adopt high-quality GOES materials from renowned Chinese steel mills, including Baosteel grades such as B23R070, B23R075, B23R085, B27R080, B30R095.
We also provide Shougang grades like 18SQG075, 20SQG075, 23SQG090, 27SQG100, with corresponding thicknesses to meet diverse motor design needs.
Stamping Process of Grain Oriented Electrical Steel Stator Core
We can provide laser cutting and wire EDM services for prototyping GOES motor stator core. For mass production, we can provide compound stamping and progressive stamping.
For compound stamping, individual laminations are first punched as loose pieces. These laminations are then stacked using dedicated tooling. Adhesive bonding can be applied during stacking to ensure strong interlaminar insulation and structural stability.
For progressive stamping, we can use in-die bonding technology. In addition, we also offer interlocking (self-locking) stacking, providing a reliable mechanical bonding option.
Grain Oriented Electrical Steel Stator Teeth Winding
We can provide stator winding services for GOES motor stator core. The winding process of grain oriented electrical steel (GOES) stator teeth follows these key steps:
Inject insulating bobbins first: We usually use high-temperature resistant, high-insulation materials like nylon (PA6, PA66) and PBT. For demanding applications, we choose glass fiber–reinforced or flame-retardant materials to ensure safety and durability.
Install bobbins on GOES stator teeth: Fit the pre-injected bobbins tightly onto the processed GOES teeth to form a full insulation layer between the winding and the core.
Wind the teeth: we use a winding machine to wind enameled copper wire on the bobbin, with uniform tension to keep the winding neat and even. We can do round winding and flat wire winding.
FAQ About GOES stator cores
Yes, GOES stator cores are often bonded using adhesive or self-bonding coatings. This method:
• Avoids welding stress
• Improves stacking accuracy
Reduces additional losses caused by mechanical deformation
Compared with NOES, GOES stator teeth feature much higher permeability and lower iron loss in the rolling direction. They effectively reduce core loss and temperature rise in PMSMs, delivering higher power density and torque density.
GOES also provides better saturation flux density, improving motor efficiency, high-speed stability and overload performance, making it ideal for high-performance permanent magnet synchronous motors.
Axial flux motor stators are designed with segmented tooth-yoke assembly mainly to improve winding manufacturability and performance.
Separated teeth allow pre-winding with high slot fill factor, especially for flat wire. The tooth and yoke can use different magnetic materials—teeth with grain-oriented silicon steel for low loss, yoke with non-oriented steel for cost efficiency.
This structure also reduces material waste, eases assembly, enhances motor power density, and better meets high-efficiency requirements for new energy and high-performance drive applications.
Choosing between GOES (Grain Oriented Electrical Steel) and NGOES (Non-Grain Oriented Electrical Steel) depends on the motor design, magnetic flux direction, and performance priorities.
GOES has superior magnetic properties in the rolling direction, offering lower core loss and higher permeability. It is suitable for applications where the magnetic flux is mainly unidirectional, such as transformer cores or segmented stator teeth with aligned flux paths. However, GOES is less effective when flux direction varies.
NGOES provides more uniform magnetic properties in all directions, making it ideal for conventional motor stator cores where the magnetic field rotates. It ensures stable performance and is easier to manufacture.
GOES stator cores are suitable for High-speed motors , High-efficiency industrial motors, EV traction motors (with segmented design), Aerospace and precision motors.
Common thicknesses include 0.23 mm,0.27 mm,0.30 mm,0.35 mm.
Thinner materials generally provide lower core loss but increase manufacturing complexity and cost.
Contact us for GOES Stator Core
If you need high-performance GOES stator teeth, segmented tooth-yoke cores, or customized solutions for axial flux motors and PMSMs, our professional engineering team is ready to support you.
Contact us today to get your optimized Grain Oriented Electrical Steel stator core solution and improve your motor efficiency and power density.