Hairpin Motor Flat Winding Wire for High-Efficiency Electric Drive Motors
Ever-increasing power density and efficiency requirements of electric vehicles led to adoption Hairpin Motor Flat Winding Wire as the mandated conductor for present-day traction motors. Hairpin winding has pyked up slot fill factor, thermal management, mechanical strength, and automated manufacturing efficiency when roferred against traditionalround magnet wire.
LP Industry HAIRPIN MOTOR FLAT WINDING WIRE High Purity Oxygen-Free Copper and Modern Insulation System of Enamel is utilized for the production of Hairpin Motor Flat Winding. Flat magnet wires designed for high speed electric motors to give excellent electrical characteristics, bending life and performance.
LP Industry can tailor the winding according to your production needs for electric traction motors, hybrid motors, commercial vehicle motors and industrial servo motors.
What Is Hairpin Motor Flat Winding Wire?
Hairpin Motor Flat Winding Wire is a rectangular enameled copper conductor. It has been specially engineered for hairpin stator winding technology. Instead of winding any flexible round wire directly into the stator, separate one piece of straight rectangular conductor is shape formed into hairpin shape, inserted into the slot of the stator, rotated then laser welded. This may be carried out until the full windings may be formed. Hairpin Motor bars these enameled copper wire bars are also called as hairpins.
This manufacturing method offers numerous advantages:
Higher slot fill factor by increasing the conductor cross-section in a rectangular shape (fill factor can be as high as 73% which is much higher compared with a 45-50% fill factor in traditional winding stators).
Increased electrical efficiency, higher copper content and improved conductor shape allow for reduced DC resistance and therefore achieve higher efficiency in traction and industrial motors.
The improved heat dissipation also improves the thermal pathways and heat dissipation due to improved conductor packing. This will then result in stable motor running under load.
An increase in the motor efficiency, small winding head leads to an increase the relative active material and the percentage that generates power.
Good availability to automated production lines. Hairpin winding (forming, inserting, twisting, welding) processes very suitable for high speed automated production line for R&D to high volume production.
These advantages make Hairpin Flat Wire the best choice for future electric drive systems.
LP Industry Hair-PIN Motor Flat Winding Wire Parameters
| Name | Hair-PIN Motor Flat Winding Wire |
| Conductor | Copper and Aluminum |
| Single wire Dimension | Thickness (a): 0.5mm – 5.6 mm Width(b): 2.0 mm -12 mm |
| Thermal Class (℃) | 180(Class H), 200(Class C), 220(Class C+), 240(Class HC) |
| Standard | IEC, NEMA, JIS, GB, UL |
| Packing | Ply30kg-150kg ply-wood spool(250400 / 250500/ 250600/ 250730) |
| Application | Hair-PIN Motor |
Advantages of Hairpin Flat Winding Technology
Compared with traditional round winding wire, Hairpin Motor Flat Winding Wire delivers significant improvements throughout motor production and operation.
| Feature | Hairpin Flat Wire | Round Magnet Wire |
| Slot Fill Factor | Excellent | Moderate |
| Motor Efficiency | Higher | Standard |
| Heat Dissipation | Better | Normal |
| Power Density | Higher | Lower |
| Automated Production | Excellent | Limited |
| Mechanical Strength | High | Moderate |
| High-Speed Motor Performance | Excellent | Good |
For high-power electric drive systems, these advantages directly contribute to improved energy efficiency, reduced losses, and increased driving range.
Applications
LP Industry Hairpin Motor Flat Winding Wire is widely used in:
Electric Vehicle (EV) Traction Motors
Hybrid Electric Vehicle (HEV) Motors
Plug-in Hybrid Motors
Commercial Vehicle Drive Motors
New Energy Vehicle Powertrain Systems
High-Speed Permanent Magnet Motors
Industrial Servo Motors
Robotics Motors
Aerospace Electrical Motors
Rail Transit Drive Motors
Frequently Asked Questions
What is the advantage of hairpin winding over round wire?
Long pitch winding: higher Copper fill factor, lower electrical resistance, better cooling, higher automation in production, higher motor efficiency.
Which insulation systems are available?
YES. We manufacture special rectangular magnet wire, where we need customer drawing, conductor size, number of insulation layers, thermal class.
Can you manufacture custom sizes?
System for PEI, PAI, AIW and all high performance insulator systems with classes up to Class 220.
Are your products suitable for EV motors?
Yes. Our Hairpin Motor Flat Winding Wire is targeted for use in electric vehicle traction motors, hybrid motors, and other high-performance drives.
What certifications do you provide?
The products have IEC, NEMA, GB standards etc. manufacturing with full inspection report, QA documents if needed.
Request a Quote
Searching for a knowledgeable and trustable Hairpin Motor Flat Winding Wire manufacturer? LP Industry offers quality rectangular magnet wire for size, high thermal capability and dependable electrical performance for electric vehicle and industrial motor. Whether you are working on prototype or mass production, LP industry will help you to find out suitable winding solution with quick delivery of quote and expert technical support.
