Linear Motor Stator Core Laminations Manufacturer

The power, precision, and efficiency of any linear motor are fundamentally tied to the quality of its stator core. At Sino, we are specialists in manufacturing Linear Motor Stator Core Laminations that deliver superior magnetic performance. Let me show you how Sino’s meticulous approach to material selection and state-of-the-art manufacturing processes translates into tangible benefits for your linear motor applications, ensuring your motors operate at peak performance, efficiency, and reliability.

Precision Steel Grades

We at Sino meticulously select our raw materials, often working with grades like M-19, M-27, or even more specialized NGO (Non-Grain Oriented) or GO (Grain Oriented) electrical steels, depending on your specific performance targets and operating frequencies. We don’t believe in a one-size-fits-all approach. We’ll consult with you to understand your operational scenario – be it a high-frequency, high-precision wafer stage or a heavy-duty industrial actuator – to recommend and utilize the optimal material for your linear motor stator core laminations.

Sino's Superior Magnetic Materials

To combat hysteresis loss, the electrical steel we select for Sino’s linear motor stator core laminations boasts several key properties:

High Magnetic Permeability

Think of permeability as how “welcoming” a material is to magnetic fields. High permeability means the iron core can easily channel and concentrate the magnetic flux, leading to a stronger magnetic field for a given amount of electrical current in the windings. This translates to more force, or the ability to achieve the same force with less current (and therefore, less copper loss in the windings!)

Low Coercivity

Coercivity is a measure of how “stubborn” a material is to being demagnetized. A material with low coercivity snaps back and forth magnetically with minimal fuss and energy loss. This directly reduces hysteresis losses.

High Electrical Resistivity

Even within a single lamination, higher material resistivity helps to further discourage those mini eddy currents we talked about earlier. Adding silicon to iron (which is why it’s often called silicon steel) is a common way to boost this resistivity without wrecking its magnetic goodness.

The Payoff

What’s the bottom line for you, the designer or user of linear motors? When you choose linear motor stator core laminations from Sino, you’re not just buying stamped steel; you’re investing in performance, reliability, and efficiency.

Sky-High Efficiency

By dramatically slashing eddy current and hysteresis losses, our laminations ensure that more of the electrical power you feed into the motor gets converted into useful mechanical work (force and motion). This means lower energy consumption and operating costs.

Wicked-Fast Dynamic Response

Lower core losses mean the motor’s magnetic field can build up and change more rapidly. This gives you snappier acceleration, quicker settling times, and overall better responsiveness – crucial for applications like high-speed automation or precision positioning systems.

Greater Force Output

With a highly efficient magnetic circuit, thanks to Sino’s top-tier linear motor stator core laminations, your motor can generate more force for its size, or you can achieve your target force with a more compact design.

Sino's Typical Lamination Material Characteristics

To give you a more concrete idea, here’s a peek at what good looks like. The exact specs will vary based on the specific grade of electrical steel and your requirements, but this gives you a general sense:

Property	Sino’s Target Characteristic	Example Material (e.g., SinoGrade M250-35A)	Why This Delivers for You
Lamination Thickness	Ultra-Thin (e.g., 0.20mm, 0.35mm, 0.50mm)	0.35 mm	Drastically slashes eddy current paths for lower losses
Electrical Resistivity	Maximized for the Grade	Approx. 50 µΩ·cm (for silicon steel)	Chokes off internal eddy currents within each lamination
Max Core Loss (W/kg)	Minimized (e.g., @ 1.5T, 50Hz or 1.0T, 400Hz)	< 2.5 W/kg @ 1.5T, 50Hz	Directly translates to higher motor efficiency & less heat
Permeability (Relative)	High & Consistent	> 1500 (µr)	Enables stronger magnetic fields, more force, better control
Insulation Coating Type	Application-Specific (e.g., C5, SINO-Coat+)	C-5 Organic or SINO-Coat+ (High-Temp Inorganic)	Ensures robust inter-laminar resistance, withstands temps
Stacking Factor	High (typically >95%)	> 96%	More iron, less airgap in the stack for better magnetic performance
Burr Height	Extremely Low (<0.02mm typical)	< 0.015mm	Prevents insulation damage and inter-laminar shorting

(Note: Specific values are illustrative and depend on material grade and testing conditions. Sino can provide detailed datasheets for specific materials and lamination stacks.)

Our Products

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Sino's Craftsmanship is Where Precision Meets Performance

The journey of a Sino lamination involves several exacting steps:

Precision Stamping or Laser Cutting

We employ high-speed, high-precision stamping presses with meticulously maintained dies, or advanced laser cutting systems for complex geometries or rapid prototyping. Our goal is to produce laminations with incredibly tight dimensional tolerances and clean edges. Sloppy cutting can lead to burrs.

The Burr Battle

Burrs are tiny, sharp protrusions of metal left on the cut edge of a lamination. These little villains can be a huge problem. If they’re big enough, they can pierce the delicate insulation layer between laminations when the stack is compressed. This creates an electrical short circuit, effectively undoing all the good work of laminating in that spot! At Sino, our tooling is top-notch, and we often incorporate secondary deburring processes to ensure burr heights are minimal, well within industry standards like those specified by ASTM A976.

Insulation Integrity

The insulation coating (often designated as C-3, C-5, or C-6, each with different properties for adhesion, temperature resistance, and dielectric strength) must be uniformly applied and robust enough to withstand the pressures of stacking and the operating environment of the motor. We ensure our coatings provide excellent inter-laminar resistance.

Stress-Relief Annealing

The stamping or cutting process, no matter how precise, introduces mechanical stresses into the electrical steel. These stresses can mess with the material’s magnetic properties, increasing coercivity and, consequently, hysteresis losses. For many high-performance linear motor stator core laminations, especially those from cold-rolled electrical steels, we perform a stress-relief annealing cycle. This involves carefully heating the laminations in a controlled atmosphere furnace to relax these stresses and restore the material’s optimal magnetic characteristics.

Stacking and Joining

Once the individual laminations are perfect, they need to be stacked into a core. This isn’t just a random pile! Alignment is critical. We utilize various techniques:

Interlocking: Some laminations are designed with small protrusions and recesses that lock them together, ensuring alignment and providing mechanical strength.
Bonding: Applying adhesive between laminations can create a very solid, quiet core.
Welding: If welding is used, it’s done with extreme care, typically along the outer periphery of the stack, far from the main magnetic flux paths, to minimize the creation of shorted turns between laminations. We often employ laser welding or TIG welding for precise control.
Cleating or Riveting: For some designs, mechanical fasteners are used.

Cooler Operation

Less energy wasted as heat means your motors run cooler. This can translate to:

Longer motor lifespan due to reduced thermal stress on insulation and bearings.
Higher power density – you can get more power out of a smaller motor, or use a smaller motor for the same job, saving space and weight.
Reduced need for complex or oversized cooling systems (fans, water cooling), simplifying your machine design and cutting costs.

Quiet Confidence

A well-built, efficiently operating motor is often a quieter motor. Solid cores or poorly made laminated cores can sometimes contribute to unwanted noise due to magnetostriction effects being exacerbated by losses. Our precision stacks help minimize that.

Your Experts in Linear Motor Stator Core Laminations

At Sino, we don’t just manufacture linear motor stator core laminations; we partner with you to optimize your linear motor designs. Whether you’re developing a brand-new, cutting-edge system or looking to enhance the performance of an existing motor, our team is ready to collaborate.

Custom Designs

From simple shapes to complex, multi-part stator segments.

Material Expertise

Guidance on selecting the ideal electrical steel for your frequency, flux density, and loss targets.

Prototyping to High-Volume Production

We can support your project from initial concept through to full-scale manufacturing.

Unwavering Quality

Our commitment to precision and quality control is embedded in every lamination stack we produce.

Partner with Sino

The world of linear motors is dynamic and demanding. Don’t let substandard stator cores hold you back. Elevate your motor performance with linear motor stator core laminations from Sino – where precision engineering meets real-world power.

Get In Touch With Sino Today!

Ready to discuss how Sino can help you achieve your next performance breakthrough? Get in touch with us. Let’s talk slices – the kind that power the future.

Note: To speed up your project, you can label Lamination Stacks with details such as tolerance, material, surface finish, whether or not oxidized insulation is required, quantity, and more.

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