Precision-Grade M350-50A Silicon Steel Laminations – Ultra-Thin (0.5mm) Grain-Oriented Cores for High-Efficiency AC
Motors with <0.8W/kg Iron Loss
Product Description:
Our motor laminations are engineered from high-grade,
grain-oriented silicon steel that keeps eddy-current losses
exceptionally low—under 1.2 W/kg at 1.5 T and 50 Hz—so your
machines run cooler and more efficiently. A proprietary,
precision-controlled annealing cycle realigns the crystal lattice,
boosting peak magnetic flux density to 1.8 T and sharply cutting
harmonic distortion, which translates into higher torque with
quieter operation. Each lamination is supplied with a uniform,
high-dielectric insulation coating applied in-line at the mill;
this “stack-ready” finish eliminates the need for post-varnishing
and reduces stator or rotor build time by roughly 40 percent. The
result is a lightweight, low-loss core that raises motor
efficiency, simplifies assembly, and delivers long-term reliability
in demanding applications—from high-speed traction drives to
compact HVAC compressors.
Features:
⚡ Low Core Loss — Up to 30 % lower than standard laminations
Our grain-oriented silicon-steel stack keeps hysteresis and
eddy-current losses to an absolute minimum, delivering a
cooler-running, higher-efficiency motor—especially at the elevated
switching frequencies typical of modern drive inverters.
⚡ High Saturation Flux — Engineered for demanding EV traction duty
With a saturation flux density approaching 1.8 T, the laminations
maintain torque under peak load and high RPM, allowing designers to
shrink active‐material mass without compromising power output.
⚡ Custom Geometry — Ready for skewed, helical, or stepped slots
Precision laser blanking and progressive-die stamping support
intricate tooth profiles and axial skews that mitigate cogging
torque, reduce acoustic noise, and smooth electromagnetic torque
ripple.
⚡ Integrated Vibration Damping — Multi-layer adhesive bonding
option
An optional viscoelastic inter-layer bonding system sandwiches each
lamination in a micro-thin damping film, suppressing
structure-borne vibration and cutting overall motor noise by up to
6 dB while improving mechanical robustness during high-speed
operation.
Technical Parameters:
| Technical Parameter | Description |
|---|
| Equipment | CNC Punching Machine, CNC Bending Machine, Stamping Machine |
| Application | Automotive, Electronics, Home Appliance, Medical |
| Drawing Format | PDF, DWG, IGS, STEP |
| Surface Treatment | Polishing, Anodizing, Plating, Sandblasting |
| Material | Stainless Steel |
| Design Software | AutoCAD, Solidworks, Pro/E |
| Tolerance | ±0.01mm |
| Thickness | 0.2mm-3.0mm |
| Delivery | By Sea, By Air Or By Express |
| Lead Time | 7-15 Days |
Applications:
| Sector | Typical Use-Case | Why Our Laminations Stand Out |
|---|
| Electric-Vehicle Drivetrains | Main traction motors, e-axles, integrated starter–generators | - 30 % lower core loss extends driving range and keeps batteries
cooler, while 1.8 T saturation flux maintains torque during hard
acceleration and hill climbs. |
| Precision Industrial Servo Motors | Robotics, CNC, pick-and-place actuators | Ultra-low hysteresis loss improves position accuracy and thermal
stability; skewed-slot capability minimises cogging for
silky-smooth motion control. |
| HVAC Compressor Units | Scroll, rotary, and centrifugal compressors | Stack-ready insulation slashes assembly time by 40 %;
adhesive-bonded laminations damp vibration, reducing audible noise
in residential and commercial spaces. |
| Wind-Turbine Generators | Direct-drive and geared PM generators | High flux density allows compact stator designs, while
grain-oriented steel cuts loss at variable frequencies, boosting
annual energy production. |
Customization:
| Category | Available Choices | Benefits to Your Project |
|---|
| Core Shapes | • Circular stator/rotor rings
• Segmented arc segments for large-diameter windings
• Rectangular / racetrack blanks for linear motors and transformers | Match any topography, from compact traction motors to utility-scale
generators, while minimising scrap and tooling cost. |
| Slot Patterns | • Closed-slot designs for maximal flux containment and low leakage
• Semi-closed slots that balance winding accessibility with magnetic performance
• Fully skewed or helical variants to cut cogging torque | Optimise the electromagnetic signature—higher power factor, quieter
running, and smoother torque ripple—without redesigning the entire
stator stack. |
| Post-Processing Finishes | • Phosphating for enhanced paint adhesion and corrosion resistance
• Electroless nickel plating for superior conductivity shielding and salt-spray durability | Extend service life in harsh environments such as coastal wind
farms, EV powertrains exposed to road salts, or high-humidity HVAC
systems. |
Support and Services:
Our Product Technical Support and Services for the Sheet Metal
Progressive Die include:
- Assistance with installation and setup of the progressive die
- Troubleshooting and diagnosing issues with the die
- Maintenance recommendations to ensure optimal performance
- Training sessions for operators on how to use the progressive die
efficiently
- Updates and upgrades to improve the functionality of the die
Packing and Shipping:
Product Packaging:
The Sheet Metal Progressive Die product will be carefully wrapped
in protective material to prevent any damage during transportation.
It will then be placed in a sturdy cardboard box with adequate
cushioning to ensure its safe delivery.
Shipping:
Once the Sheet Metal Progressive Die product is securely packaged,
it will be shipped via a reliable courier service. Customers can
track their shipment using the provided tracking number to monitor
its delivery status.
FAQ:
Q 1: What is the minimum order quantity for custom stamping dies?
A: The minimum order for each design is 5,000 pieces. After
receiving the final drawings, the mold making and the confirmation
of the first piece will be completed in approximately 15 working
days.
Q 2: Can small-batch trial production be provided before mass
production?
A: OK. After the mold is accepted, a trial production batch of 200
to 300 pieces can be delivered first to facilitate your
installation and testing.
Q 3: Will the insulating coating reduce the heat dissipation
performance?
A: According to the test of IEC 60404-8, the coating reduces the
vertical thermal conductivity by less than 3% and has almost no
effect on the core heat dissipation.
Q 4: What are the optional thicknesses of silicon steel sheets?
A: Always have 0.20mm, 0.27mm, 0.35mm on hand; Thinner
specifications can be supplied on demand.
Q 5: Can laminated components that have been bonded or welded be
provided?
A: Yes, it supports various full-stack delivery forms such as
adhesive bonding, laser welding, and interlocking with clips.
