Permanent Magnet Motor Lamination Stacks Manufacturer

Leveraging precision processes and trustworthy materials, Sino manufactures reliable laminations engineered to minimize your losses. This establishes us as a premier manufacturer of permanent magnet motor laminations, whose products find extensive application in diverse sectors.

Sino's Material Mastery: The Right Steel for Your Spin

At Sino, we guide you through Choosing the lamination material that matches the material’s characteristics to your motor’s job description, your performance targets, and your budget, ensuring the heart of your permanent magnet motor stator and rotor is perfectly tuned.

Here’s a quick rundown of some common material families we work with:

Material Type	Sino’s Perspective & Key Advantages	Potential Trade-offs	Common Scenarios We See
Silicon Steel (e.g., M19, M27, M36, M47 grades, up to high-frequency grades like 20JNEH1200)	Good magnetic performance, cost-effective, excellent for stamping and stacking. Sino stocks various grades for quick turnaround.	Higher losses than some exotics, especially at very high frequencies.	General industrial motors, appliances, HVAC, automotive auxiliaries, many permanent magnet motor stator designs.
Cobalt-Iron Alloys (e.g., Hiperco®, Vacoflux®)	The heavy hitter for power density. Fantastic saturation flux means more magnetic muscle in a smaller space. Great for high-temp scenarios. Sino can source and process these demanding materials.	Premium price point, can be trickier to stamp and anneal.	Aerospace motors, high-performance electric vehicle (EV) traction motors, specialized robotics.
Amorphous & Nanocrystalline Metals	The efficiency champions, especially at high frequencies. Super low hysteresis and eddy losses. Sino is equipped for handling these more delicate, often thinner materials.	More brittle, generally higher cost, lower saturation flux density than Co-Fe. Can require specialized stacking/bonding.	High-frequency inductors, ultra-high-efficiency motors, specialized medical devices.
Nickel-Iron Alloys (e.g., MuMetal®, Permalloy®)	Masters of permeability at low field strengths. Excellent for shielding.	Lower saturation limits, often expensive.	Sensitive sensor applications, magnetic shielding components, some very specialized small motor designs.

It's Not Just the Material, It's the Craft: Thickness & Insulation at Sino

Having the right electrical steel is just the start. Sino knows how to process it into your finished permanent magnet motor rotor or stator stack.

Lamination Thickness

Sino’s manufacturing prowess allows us to expertly handle a wide spectrum of thicknesses, from robust 0.65mm laminations for cost-sensitive, lower-speed motors, all the way down to ultra-thin 0.1mm materials for the most demanding high-frequency applications. But it’s a balancing act. More, thinner laminations for a given stack height can mean slightly higher assembly costs and a lower “stacking factor” (the actual amount of iron versus the total volume, due to insulation taking up space). We work with you to find that sweet spot for your permanent magnet motor stator and rotor.

Insulation Integrity

Each lamination in a stack must be electrically isolated from its neighbors. If this insulation fails, they’ll flow merrily, losses will spike, and your motor will heat up. At Sino, we utilize a range of industry-standard interlaminar insulation coatings (like C3, C5, and C6 coatings as defined by ASTM A976 standards).

C3 Coating: Often an organic varnish, good for general purposes.
C5 Coating: An inorganic coating, better for higher temperatures and for stress-relief annealing after stamping. Sino often recommends this for more demanding thermal scenarios.
C6 Coating: A thicker inorganic coating, sometimes used for even more robust insulation or where some level of self-bonding is desired during curing. Our coating application and curing processes are meticulously controlled to ensure uniform coverage and optimal dielectric strength. We don’t cut corners here, because a tiny flaw in insulation can have big consequences for your motor.

The Sino Edge: What Our Laminations Bring to Your Motor

So, when you partner with Sino for your permanent magnet motor laminations, what tangible benefits can you expect? It’s more than just precisely stacked steel.

Boosting Your Motor's Efficiency

By expertly minimizing both eddy current and hysteresis losses through careful material selection (like low-loss silicon steels for your permanent magnet motor stator), precise thickness control, and impeccable insulation, Sino’s laminations allow more of your input electrical power to be converted into useful mechanical work. Think better energy ratings, lower operating costs for the end-user, and a greener footprint.

Keeping it Cool

Less energy wasted as heat means your motor runs cooler. A cooler permanent magnet motor stator and rotor translates to longer life for bearings and winding insulation. It can even mean that your permanent magnets are less likely to suffer from irreversible demagnetization at elevated temperatures. This allows you to either build a more robust motor or, in some cases, reduce the complexity and cost of your cooling system.

Unlocking Higher Power Density

When losses are minimized, you can push more power through a motor of a given size, or, conversely, achieve the required power output with a smaller, lighter motor. This is absolutely vital in scenarios like electric vehicle traction motors, where every gram and cubic centimeter counts for the permanent magnet motor rotor and stator assembly, or in portable power tools where operator fatigue is a concern. Sino’s high-performance laminations are key enablers here.

Enhancing Motor Durability & Lifespan

Heat is the enemy of longevity. By keeping core losses in check, Sino laminations reduce the thermal stress on all motor components, contributing directly to a longer, more reliable operational life.

Predictable Performance

Our rigorous quality control, from incoming steel inspection to final stack dimensioning and electrical testing, ensures that the magnetic properties of your permanent magnet motor stator and rotor cores are consistent. This means your motors perform as designed, every single time, reducing your own production line variations and field issues.

Our Permanent Magnet Motor Lamination Products

Beyond the Stack: Sino's Partnership Approach

At Sino, we don’t just want to be your supplier; we aim to be your partner in motor innovation.

Design for Manufacturability (DFM)

Bring us your permanent magnet motor stator or permanent magnet motor rotor designs early. Our engineers can often suggest subtle modifications to lamination geometry or material choice that can improve magnetic performance, reduce manufacturing costs, or enhance assembly efficiency on your end.

Rapid Prototyping

Need to test a new concept? Sino offers quick-turn prototyping services, leveraging flexible tooling or laser cutting for initial samples, so you can iterate faster.

Customization is Key

From unique slot shapes and pole counts for your permanent magnet motor stator to complex rotor geometries with specific interlocking or skewing requirements, we have the capability to produce highly customized lamination stacks tailored to your exact needs.

The Sino Stamp: Quality and Expertise You Can Trust

Our commitment at Sino is underpinned by:

ISO-Certified Processes: Adherence to international quality management standards.
State-of-the-Art Manufacturing: Investment in high-speed presses, precision die-making, automated stacking, and advanced coating lines.
Rigorous Quality Control: From raw material verification to in-process checks and final inspection of every batch of permanent magnet motor laminations.

Your Motor's Best Performance Starts with Sino Laminations

The design and quality of your permanent magnet motor laminations are not afterthoughts; they are foundational to achieving the efficiency, power density, and reliability your customers demand. The intricate details of material selection, lamination thickness, insulation integrity, and stacking precision all play a critical role in how well your permanent magnet motor stator and permanent magnet motor rotor will perform.

At Sino, we live and breathe this stuff. We combine decades of specialized experience with cutting-edge technology to deliver lamination stacks that don’t just meet specifications but elevate your entire motor design.

Get in Touch with Us Today!

Ready to see how Sino can help you unleash the full potential of your permanent magnet motors? Let’s talk. We’re confident that our laminations can be the bedrock of your next breakthrough product.

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.

Let Sino's Lamination Stacks Empower Your Project!