Self-Bonding Electrical Steel Laminations

Lamnow is a leading manufacturer of self-bonding motor lamination stacks in China. With over 10 years of lamination manufacturing expertise, we specialize in producing high-quality motor laminations that are designed to meet the specific requirements of our clients.

lamination bonding services

self-bonding services

Precision And Innovation

Our self bonding technologies involve applying a thin coating of insulating material to the steel laminations used in electric motor cores. This bonding technique enhances the lamination’s resistance to corrosion and electrical insulation.

Customized Self-Adhesive Electrical Steel Laminations

Our customized self-adhesive motor stators and rotor laminations are specifically tailored to the needs of motor customers, offering precise fit and optimal performance. These laminations can be customized based on size, shape, and gluing properties, making them ideal for high-speed applications, such as electric vehicle motors, drone motors, and industrial machinery motors.

self bonding drone motor laminatioins

UAV Motor Self-Bonding Core Laminations

Our self-bonding core laminations for UAV motors are ideal for industrial, agricultural, and aerial photography drones, providing optimal performance and durability.

adhesive lamination for new energy vehicle hub motor

Self-Adhesive Motor Laminations For New Energy Vehicles

Our self bonding adhesive small and medium-sized motor cores for New Energy Vehicles (NEVs), including EV motors, Hybrid Electric Vehicles (HEVs) motors, and electric propulsion systems for vehicles with hub motors.

self-bonding segmented stator laminations

Self-Bonding Segmented Motor Stator Lamination Stacks

Segmented motor stator self-bonding iron core laminations are designed for use in high-performance electric motors, particularly in the automotive and industrial sectors.

transformer laminations

Bonding Transformer Core Laminations

We offer EI, and UI bonding transformer laminations that offer enhanced performance and reliability for various transformer applications, providing optimal efficiency and reduced noise.

BLDC motor lamination epoxy power coating for UAVs

BLDC Motor Self-bonding Lamination Stacks

The BLDC motor self-bonding lamination stacks are designed for brushless direct current motors, commonly used in electric vehicles, drones, and industrial machinery.

linear motor laminations for rail

Linear Motor Self-bonding Lamination Stacks

The linear motor self-bonding lamination stacks offer precision and durability for linear motion systems, including CNC machines, 3D printers, and industrial automation.

Our Full-face Bonding Lamination Stacks Capabilities

Full-face bonding of the laminations is a type of silicon steel lamination used in electric motors, generators, and transformers. These laminations have a special coating that allows them to adhere to each other without the need for additional adhesive or bonding agents. The process of creating self-bonding motor laminations typically involves several steps:

self bonding motor lamination process

The lamination bonding process uses a roll coat process that applies an insulating adhesive bonding agent to the motor lamination sheets. This material is typically a type of epoxy or polymer that is applied as a liquid and then cured.

The individual lamination sheets are stamped, wire-cut, or laser-cut to the desired shape and size.

Based on the requirements, a fixture is designed using CAD software or other design tools. The built fixture should be designed to securely hold the laminations in place and apply the required pressure evenly across the surface.

These laminations are then stacked together to form the core of the motor or transformer.

The coated laminations are second cured at a specific temperature and for a specific period to ensure that the bonding material has achieved its high bonding strength and formed a strong bond between the laminations.

Benefits Of Self-Bonding Motor Core Laminations

Self-bonding iron core laminates, also known as join stacked rotor and stator laminations, offer several benefits over traditional laminations that use adhesives or mechanical fasteners:

Enhanced Efficiency

Ensuring the structural integrity of laminate stacks through the use of bonding varnish (also known as backlack) and glue-dot bonding. This reduces core losses and improves the efficiency of the motor.

Cost Savings

While the initial cost of self-bonding laminations may be higher than traditional laminations, the overall cost of the motor can be reduced due to improved efficiency and reliability.

High Precision

Surface contact uniformity has been notably enhanced, while flatness and verticality have seen an improvement exceeding 50% (as measured by a 0.05mm feeler gauge).

Improved Thermal Conductivity

Self-bonding eliminates the need for adhesives or mechanical fasteners, which can act as thermal barriers. This improves the heat dissipation of the motor, leading to better performance and reliability.

Reduced Vibration and Noise

The tight bonding of the laminations reduces vibration and noise levels within the motor, resulting in quieter motor operation and more efficient motor operation.

Longer Service Life

The absence of adhesives or mechanical fasteners decreases the likelihood of delamination or mechanical failures, thereby significantly extending the service life of the motor. This design approach enhances reliability and durability.

Quality Control For Adhesive Rotor And Stator Laminations

electrical steel

Electric Motor Lamination Stacks Bonding Materials

We offer EB540, EB546, EB548, EB549, Magna-Tac E645, Magna-Tac F310, 3M™ Scotch-Weld™ 2290, MX-6272, Magna-Tac TR-8899, Suralac 9000, PE75W, PE49 used for bonding stack laminations used in stator, rotor.

The rotor and stator core laminations themselves are often made from silicon steel, nickel alloys, cobalt alloys, amorphous metal alloys, or other suitable materials that provide the required magnetic properties and mechanical strength.

Backlack Bonding Stator And Rotor Cores Explore Related Services

Motor Stamping

Motor lamination stamping includes progressive stamping, compound stamping, and rotary notching employs specialized dies to cut and shape silicon steel(electrical steel).


We use laser cutting and wire-cutting to cut silicon steel lamination prototypes and use adhesive bonding lamination. The lead time 7-15 days.

Insulation Coating

We offer motor stator injection molding and electrostatic epoxy powder coating processes to achieve electric motor iron core insulation.

Trusted Self-Bonding Motor Laminations Manufacturer

With extensive experience in the electric motor industry, our company specializes in producing high-quality self-bonding motor lamination stack in China that exceed industry standards. Our advanced manufacturing processes and precision engineering ensure tight tolerances and minimal eddy current losses. We offer a wide range of customization options to meet your specific requirements.

Build your Lamination Bonding knowledge

You’ll find the electric motor lamination stacks bonding dies resources with confidence on the Lamnow blog.

Bonding Lamination Core Stacks FAQS

Lamination bonding represents a groundbreaking advancement in motor manufacturing. Self-bonding motor laminations work through a heat treatment process that activates their bonding properties. When subjected to heat, the laminations bond together at the molecular level, creating a seamless and strong connection.

Yes, self-bonding motor components can be customized to meet specific requirements and optimal motor performance, such as size, shape, and magnetic properties. This allows for greater flexibility in motor design and optimization.

Self-bonding motor laminations can benefit a wide range of motors, including brushless DC motors, permanent magnet synchronous motors, and induction motors, among others.

The laminations use bonding varnish/backlack to bonded to create a stable core. Unlike traditional methods that rely on interlocking teeth or welding points to secure laminations, This bonding lamination technology is used to reduce interlaminar loss and corrosion.

In addition to self adhesive bonding process, we provide stator and rotor assemblies including laminates glue-dot bonding(spot bonding), welding laminations(laser welding, TIG welding, and MIG welding), riveting lamination process, cleating process, interlocking process, rotor shaft insertion, etc.

Enhance Your Motor Efficiency with Our Self-Bonding Laminations!

Upgrade your electric motor performance with our rotor and stator bonding lamination stacks services. Customize your laminations with us to meet your unique motor requirements.