Applications

Motor Lamination Stacks Stamping

At Sino, we build the powerful hearts of electric motors. Our precision motor lamination stacks stamping service gives your motors more power and wastes less energy. Inside every great motor and transformer is a carefully made magnetic core. How well it works depends on a few key things. We carefully choose the right materials. We use modern production methods. And we pay close attention to every tiny detail. We help companies all over the world in areas like cars, factories, airplanes, and power plants make their products better.

By working with Sino, you get perfect rotor and stator parts delivered fast. Our work is based on knowing a lot about metals and magnets. We help you from start to finish. We begin by helping you choose the right materials. We finish by delivering complete stator and rotor cores that are tested and ready to use. Our complete service makes your supply chain safer. It also helps you get your products to market faster and makes them perform better. Let Sino be your partner in power and success.

How Sino Makes Your Motor Cores Better

The motor core is the key to a great motor. We use special skills and advanced tools for our motor lamination stamping process. This ensures every core from Sino is the best it can be. Our work helps lower energy loss and makes your motors run smoothly and quietly. To do this, we offer a big advantage in four main areas: technical knowledge, modern manufacturing, quality checks, and all-in-one solutions.

1. Top-Level Technical and Metal Knowledge

Understanding Materials: We give you expert advice on all types of electrical steels. This includes common M-Grades and new materials like amorphous and nanocrystalline alloys. We help you pick the best one for performance and price.

Keeping Magnetic Qualities: We use carefully controlled methods to reduce stress on the metal. This protects the material’s natural magnetic ability and keeps energy loss low.

Designing for Easy Production (DFM): We work with your engineers right from the start. We give them important feedback to improve the lamination shape. This makes it perform better magnetically and also makes it easier and cheaper to produce through motor lamination stacks stamping.

2. Advanced Motor Lamination Stamping for Perfect Parts

Motor lamination stamping is how we cut the thin metal sheets for your motor. Our factory has fast presses of many sizes (60 to 300+ tons). We use these for different types of motor lamination stamping, like progressive die stamping and compound die stamping. We also offer notching for different project sizes and shapes.

Progressive Die Stamping: This is great for making many parts very quickly. A long strip of metal goes through a machine that punches out the shape step-by-step. It is perfect for big orders for the automotive industry. When you need to make a lot of parts, progressive die motor lamination stamping is what we do best. It is very fast, saves money, and makes every part the same.

  • Very Fast: Our presses can run up to 800 times a minute.
  • Saves Money: Putting many steps into one process reduces work and handling costs.
  • Always the Same: Making every part identical is very important for automatic assembly later on.

Compound Die Stamping: This method is good for complex shapes. It makes all the cuts in one go. This results in parts that are very flat and even, which is key for good performance.

High-Speed Press: Our fast presses help us make your parts quickly, so you can sell your products sooner. We use top-quality press machines from the best makers. We also have a highly skilled team that makes the tools and dies needed for the motor lamination stacks stamping process.

3. More Than Just Motor Lamination Stamping

Sometimes, a project needs a different touch. For new ideas or very large parts, we also offer:

  • Making Quick Samples (Prototyping): For research and new products, we can use laser cutting and wire EDM. This lets you test and change your designs quickly without needing to pay for expensive tools.
  • Notching: A process for cutting slots into the edge of a round part, often used for large generators.
  • Photochemical Etching: Uses special liquids to carve out metal parts. This is good for very thin or complex designs.

Below is a guide to our manufacturing methods:

Manufacturing Method

Best Suited For

Typical Volume (Parts)

Initial Tooling Cost

Laser Cutting / Wire EDM

Rapid Prototyping, R&D

1 – 1,000

None

Notching

Small to medium volume round cores

1,000 – 50,000

Low to Medium

Progressive Die Motor Lamination Stamping

High-volume, mass production

50,000 – 10,000,000+

High

4. All-in-One, Complete Services

We make your supply chain simpler by offering many services in one place. We do everything from designing the tools to processes after stamping, like heat treating and coating. We also handle the final assembly of the core. Working with just one partner like us makes things less complicated. It also speeds up delivery time and guarantees good quality control from start to finish.

The Best Materials for a Powerful Motor

The material of the core decides how well it performs. We are experts at working with many kinds of metal alloys to get the best performance out of them. At Sino, we use only the best electrical steel. This special steel is the secret to a highly efficient motor after our motor lamination stacks stamping process. It helps guide the magnetic energy and lowers energy loss.

Specialization in Silicon Electrical Steels (M-Grades)

This is the best choice for most motors. It has great magnetic features, like being easy to magnetize and demagnetize.

  • M19: For high-performance uses like EV traction motors and servos where very low energy loss is important.
  • M27 & M36: A good balance of performance and cost for general motors and transformers.
  • M47 & Higher: Lower-cost options for appliance motors, solenoids, and ballasts.

Leaders in New Metals like Amorphous and Nanocrystalline

These alloys have very, very low energy loss. They are used in high-tech motors and transformers. For products that need to be very efficient at high speeds, we have special ways to work with new but fragile materials. These include amorphous metals and nanocrystalline alloys. They are used in things like solar power systems, EV chargers, and special transformers.

Other materials we work with include

  • Non-Oriented Electrical Steel: Perfect for parts where the magnetic field moves around, like in a spinning rotor.
  • Cold-Rolled Grain-Oriented (CRGO) Steel: Best used for a transformer core, where the magnetic field flows in a straight line.
  • Thin-Gauge Electrical Steel: The best choice for high-speed motors, like those in electric vehicles (EVs).
  • Soft Magnetic Composites (SMCs): This lets us make complex 3D shapes that are hard to do with normal stamping.
  • Cobalt Alloys & Nickel Alloys: Used in tough jobs like airplane parts that need to be strong and handle heat.

Building the Core: Stacking and Assembly

After the motor lamination stamping is done, we assemble the parts to build the motor core. Sino uses modern ways to build your lamination stack.

  • Automated Stacking: We use robots and special tools for this job. Using robots means every stack is the same. This gives you consistent quality.
  • Joining the Stack: We need to hold the thin sheets together. We can do this through Interlocking (like puzzle pieces), Welding (for a very strong stack), Bonding (using special glue like Backlack to lower noise), or Cleating (using small metal keys).

After the stack is built, it becomes the main part of the stator (the part that stays still) or the rotor (the part that spins).

Quality You Can Trust at Sino

A motor is a machine that requires great precision. Being precise is key to good performance. We control tiny flaws that can cause more energy loss, noise, and make the motor less efficient.

The Keys to Precision: Exact Sizes, Burr Control & Flatness

  • Controlling Burrs: Burrs are small, rough edges. If not controlled, they can cause short circuits between the metal sheets. To keep burrs small, we use high-quality tools, set our machines with extreme accuracy, and take very good care of our equipment. We check burr size with special tools, keeping them under 10% of the material’s thickness. For important projects, we can get them below 5%.
  • Exact Sizes: We hold very strict size measurements. This means every part is the exact size and shape it needs to be.

Geometric Feature

High-Precision Size Capability

Stator Bore (ID) / Rotor OD

Up to ±0.01 mm

Slot Geometry & Position

Up to ±0.025 mm

Concentricity (ID to OD)

Up to 0.02 mm TIR

Overall Stack Height

Up to ±0.05 mm

Our Strong Commitment to Quality

  • Proven Quality: We are certified with ISO 9001 and IATF 16949. This shows we meet the tough quality rules for the worldwide car and factory industries.
  • Advanced Measurement: Our quality labs have high-tech machines like CMMs and optical systems. We use them to carefully measure and check all important details, like burr size and flatness.
  • Full Tracking: We can track every part from the original metal coil to the finished core. This means we are accountable and makes quality checks easy.

Testing for Top Performance: We also test how the parts will work in your motor. This includes tests for energy loss, magnetic qualities, and insulation. To protect the core, we also offer different finishes. These include insulation coating, varnish, and epoxy or powder coating.

Motor Lamination Stacks Stamping for Any Industry

Sino provides motor lamination stacks stamping services for many fields. Our parts are used in:

  • Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs)
  • Industrial Motors
  • Aerospace and the Defense Industry
  • Renewable Energy (e.g., wind turbines)
  • Medical Devices
  • Robotics
  • Appliance Motors
  • Power Tools
  • Transformers
  • Electronics and Consumer Goods

Your Key Partner for a More Efficient Future

Sino is more than just a parts maker. We are experts in designing for the best magnetic performance. Our special mix of material knowledge, large-scale production, and focus on tiny details gives you a big advantage. We help the world’s top companies build products that are more powerful, use less energy, and are more dependable.

Talk to our engineering team to see how working with Sino can power up your next project. Contact Sino today. Let’s build the future of electric motors together.