criteria for motor lamination rotary notching technology

The Five Key Criteria for Motor Lamination Rotary Notching Technology

Are you curious about the intricate world of motor lamination manufacturing and the technology that underpins it? Embark on a journey with us as we unravel “The Five Key Criteria for Successful Rotary Notching Technology.”

In this blog series, we’ll answer pressing questions, exploring the technological nuances that drive precision, efficiency, and materials in the realm of rotary notching.

What Are the Rotary Notching Motor Lamination Stacks?

Rotary notching motor lamination stacks involve a precision process using CNC technology to notch electric steel sheets for motor cores.

The CNC rotary notching machine guided by a servo motor, equipped with specialized notching tools, accurately cuts and shapes thin silicon steel sheets based on computer-designed patterns. 

Rotary notching is an economical choice for medium and large motor rotor and stator lamination core production, accommodating intricate designs and diverse specifications. 

Unlike progressive stamping and compound stamping,  the rotary notching process is suitable for low-to-medium volume production and prototypes. The single slot notching motor laminations are applied to automotive, aerospace, electronics, and military applications.

motor laminations rotary notching technology

The Five Key Criteria

Precision Engineering in Rotary Notching

In the intricate world of motor stator and rotor lamination manufacturing, precision engineering stands as the linchpin of excellence, especially in the realm of rotary notching. This precision is not just a requirement but a meticulous art form, defining the quality of electric motor laminations.

At its core, precision engineering in rotary notching involves the exacting execution of each notching operation. The goal is to achieve unparalleled accuracy in dimensions and angles, ensuring that each cut meets stringent standards.

Material Compatibility and Versatility

Motor laminations can be crafted from various materials, including silicon steel(electrical steel), which is commonly used for its magnetic properties. Successful rotary notching technology must exhibit versatility in handling different materials. Whether it’s silicon steel, aluminum, or other nickel, or cobalt alloys, the notching technology should be adaptable to a range of materials used in motor laminations.

motor lamination material selection

Production Speed and Efficiency in Motor Laminations

Efficiency is a key factor in modern manufacturing, the state-of-the-art CNC machinery is equipped with a servo driven indexer, showcasing a remarkable capacity to operate at speeds of up to 1,200 strokes per minute.

The servo driven indexer ensures unparalleled efficiency by delivering highly accurate parts with precise position indexing tolerance. The CNC Rotary Notching press not only accelerates the notching process but also guarantees a level of precision that meets the most stringent industry standards.

Durability and Reliability in Motor Core Laminations

Durability and reliability are crucial considerations for any industrial technology, and rotary notching systems for motor laminations are no exception. The components of the system should be robust and capable of withstanding the demands of continuous operation.

A rotary notching system for motor laminations should have a prolonged service life, offering reliable performance over an extended period. This longevity contributes to the overall cost-effectiveness of the technology, reducing the need for frequent replacements or extensive maintenance.

Ease of Use and Maintenance for Motor Laminations

An often overlooked but critical criterion for successful rotary notching technology in motor laminations is ease of use and maintenance. The system should feature a user-friendly interface that allows operators to set parameters easily, monitor the notching process, and make adjustments as needed. Intuitive controls enhance operator efficiency and reduce the likelihood of errors during setup and operation.

Our Rotary Notching Capabilities For Lamination Stacks

single notching laminations capabilities

As a professional manufacturer of motor cores in China, Lamnow specializes in lamination stamping and notching services. With a focus on precision and versatility, we offer a maximum outside diameter of up to 1250mm for our products.

We excel in advanced single-slot notching, ensuring precision across various lamination shapes and sizes.

In addition, every lamination is notched finished, we offer laser welding, riveting, cleating, glue, and self-bonding processes to bond and stack lamination together to the motor core.

Whether for large-scale or intricate designs, our capabilities ensure high-quality results. Count on Lamnow for cost-effective solutions, leveraging our expertise to meet the unique requirements of your lamination stamping and notching needs.


In conclusion, successful rotary notching technology for motor laminations hinges on several key criteria. Precision and accuracy, material compatibility and versatility, production speed, and efficiency, durability, and reliability, and ease of use and maintenance collectively contribute to the effectiveness of rotary notching systems in the electric motor manufacturing industry.

As technology continues to advance, meeting these criteria becomes increasingly important for ensuring the seamless production of motor laminations that power the devices driving our modern world.


What are the advantages of rotary notching motor lamination?

Rotary notching for motor lamination offers precision and consistency, ensuring optimal performance. It enables cost-effective production with the ability to handle diverse shapes and sizes, meeting specific industry requirements efficiently.

How does motor lamination rotary notching contribute to the efficiency of electric motors?

Motor lamination rotary notching plays a vital role in enhancing the efficiency of electric motors by ensuring that laminations are accurately notched. Well-notched laminations reduce energy losses through eddy currents and hysteresis, improving the overall performance of the motor.

Which industries use rotary slotting to produce laminates?

Rotary slotting is widely employed in industries such as electric motor manufacturing, automotive, aerospace, electronics, and military applications. The precise and efficient nature of rotary slotting makes it a preferred choice for producing laminates in these sectors, ensuring high-quality and tailored solutions.

Can motor lamination rotary notching be customized for different motor designs?

Yes, motor lamination rotary notching can be customized for different motor designs. The flexibility of the technology allows for adjustments in notching patterns and dimensions, accommodating various motor specifications and design requirements.

Look for quality motor lamination

To learn more about our motor lamination manufacturing capabilities for your industry, contact our team today.