Outrunner Motor Stator Stamping Stack Supplier
Motor Stator Stamping — Precision Stamping & Stamping Stacks for Outrunner & Drone Motors | Reenives Stator Core Supplier
⚠️ Is your motor stator stamping suffering from excessive burrs, short die life, or inconsistent tolerances? Poor stamping quality — worn dies, incorrect clearance, or inconsistent material feed — can increase core loss, cause stacking problems, and drive up production costs, especially in high-volume outrunner BLDC motor manufacturing for drones.
✅ Reenives provides high-precision motor stator stamping and stamping stacks engineered for outrunner and drone motors. With imported high-speed progressive die stamping lines, precision carbide tooling, epoxy powder coating, and dust-free workshops, we deliver stamped stator cores with low burrs, tight tolerances, and long die life. As a reliable outrunner motor stator stamping stack supplier, we help 1000+ enterprises improve motor reliability and reduce production costs.
📋 Table of Contents
What Is Motor Stator Stamping?
Motor stator stamping is the process of cutting thin electrical steel sheets into precise stator core shapes using a stamping press and hardened steel dies. The stamped laminations are then stacked, interlocked or bonded, and coated to form the stator core of a motor. Each lamination is coated with a thin insulation layer to limit eddy currents between layers.
In outrunner BLDC motors used in drones, motor stator stamping is the most common and cost-effective production method for high volumes. The stamping process directly determines:
- Dimensional accuracy & stacking factor
- Burr height & inter-lamination shorts
- Core loss & motor efficiency
- Tooling life & production cost per piece
High-speed progressive die stamping with precision carbide tooling ensures consistent lamination geometry, minimal burrs, and long tool life — critical for high-volume outrunner drone motor production.
Precision motor stator stamping — manufactured by Reenives with imported high-speed stamping & epoxy powder coating lines.
Types of Motor Stator Stamping
Motor stator stamping can be performed using several methods, each suited to different production volumes, precision requirements, and cost targets. Reenives offers the following:
- High-Speed Progressive Die Stamping — Continuous coil feeding through a multi-station die. Highest efficiency for high-volume outrunner drone motor production. Low cost per piece, excellent consistency.
- Compound Die Stamping — Single-stroke die that cuts the entire lamination profile in one hit. Good for medium volumes, high precision.
- Segmented Stamping — Individual teeth stamped separately for separate winding, then assembled into a full core. Higher slot fill factor.
- Interlocked Stamping Stacks — Stamped laminations with integral dimples or dovetails for mechanical assembly. Cost-effective for high volume.
- Bonded Stamping Stacks — Stamped laminations bonded with adhesive instead of interlocking, reducing eddy current losses.
- Epoxy-Coated Stamping Stacks — Stamped laminations individually coated with epoxy powder for superior insulation and corrosion resistance.
- Laser-Cut Stamping Alternatives — No tooling cost, fast turnaround for prototypes and low-volume production.
- Custom Stamping Stacks — Private mould development for unique slot counts, outer diameters, and tooth profiles.
Whether you need high-volume progressive die stamping or low-volume prototype stamping, Reenives can supply the right solution.
Key Specifications & Data
Below are typical specifications for Reenives motor stator stamping. Custom values are available upon request.
| Parameter | Typical Range / Value | Notes |
|---|---|---|
| Lamination Material | Silicon steel (e.g., 35WW250, 50WW470) | Low core loss grades |
| Lamination Thickness | 0.20 mm – 0.50 mm | Thinner = lower eddy current loss |
| Outer Diameter | 20 mm – 200 mm | Customizable |
| Inner Diameter | 10 mm – 180 mm | Depends on rotor design |
| Stack Length | 5 mm – 80 mm | Affects torque & power |
| Slot Number | 6, 9, 12, 18, 24, etc. | Matches pole count |
| Stamping Method | High-speed progressive die | For high volume |
| Stamping Tolerance | ±0.05 mm (critical dimensions) | High-precision dies |
| Burr Height | ≤ 0.03 mm | Optimized die clearance |
| Insulation Coating | Epoxy powder coating | Uniform, pinhole-free |
| Core Loss (at 400Hz, 1T) | ≤ 25 W/kg | Material dependent |
| Die Life | 1–5 million strokes (typical) | Depends on material & maintenance |
Data source: Reenives internal testing & supplier material datasheets, 2024. Actual values may vary by design.
Applications of Motor Stator Stamping
Reenives motor stator stamping is used across a wide range of outrunner BLDC and drone motor applications:
- FPV Racing Drones — High RPM, lightweight stamped stators with low cogging torque.
- Cinematic & Photography Drones — Smooth, vibration-free stamped stators for stable aerial footage.
- Agricultural Spraying Drones — Corrosion-resistant epoxy-coated stamped stators for harsh chemical environments.
- Industrial Inspection Drones — High-torque stamped stators for long endurance and heavy payloads.
- eVTOL & UAV Propulsion — Custom high-power stamped stators for next-generation air mobility.
- Robot Actuators — Low cogging torque stamped stators for precise motion control.
- EPS Motors — Low NVH stamped stators for automotive electric power steering systems.
- General BLDC Motors — Fans, pumps, power tools, and automotive actuators.
Reenives motor stator stamping powers FPV, agricultural, cinematic, and industrial UAVs worldwide.
How to Select the Right Motor Stator Stamping Process
Choosing the right motor stator stamping process for your outrunner drone motor involves several engineering and commercial decisions. Follow these steps:
- Determine Production Volume — High volume favors progressive die stamping; low volume or prototypes favor laser cutting or compound dies.
- Specify Lamination Material & Thickness — For high-RPM outrunner drone motors, use 0.20–0.25 mm low-loss silicon steel. For lower RPM, 0.35–0.50 mm is cost-effective.
- Define Critical Tolerances — Inner diameter, outer diameter, and slot dimensions typically require ±0.05 mm. Burr height should be ≤ 0.03 mm.
- Evaluate Die Design & Maintenance — Progressive dies with high-quality carbide inserts last longer and maintain precision. Ask about die maintenance schedules.
- Check Coating Capabilities — Epoxy powder coating for insulation and corrosion resistance. Ensure uniform, pinhole-free coverage.
- Request Sample Laminations — Test for burr height, dimensional accuracy, and magnetic performance before committing to production.
- Consider Logistics & Lead Time — Ensure the supplier can meet your production schedule and ship globally with export qualifications.
- Request Samples & Test — Reenives provides free samples for qualified projects. Test core loss, temperature rise, and mechanical fit.
FAQ — Motor Stator Stamping Parameters
Q1: What is the difference between progressive die stamping and compound die stamping for motor stators?
A: Progressive die stamping uses a multi-station die that performs cutting, notching, and forming operations sequentially as the coil feeds through. It offers the lowest cost per piece at high volumes and excellent consistency. Compound die stamping completes the entire lamination profile in a single press stroke, which is suitable for medium volumes and offers high precision with simpler tooling. For outrunner drone motor production above a few thousand pieces, progressive die stamping is usually more economical.
Source: Reenives engineering team, based on production experience.
Q2: What burr height can you achieve with your motor stator stamping process?
A: Our high-speed progressive die stamping process typically achieves a burr height of ≤ 0.03 mm with optimized die clearance and regular maintenance. This ensures clean stacking, reduces inter-lamination shorts, and minimizes vibration. Tighter burr control can be achieved for specific applications upon request.
Source: Reenives quality control standards, 2024.
Q3: What lamination thickness do you recommend for high-RPM outrunner drone motors?
A: For high-RPM outrunner drone motors (above 10,000 RPM), we recommend 0.20 mm or 0.25 mm silicon steel laminations. Thinner laminations significantly reduce eddy current losses, which helps keep the motor cool and improves efficiency. For lower RPM applications, 0.35 mm or 0.50 mm can be more cost-effective.
Source: Reenives engineering team, based on motor design guidelines and material datasheets.
Q4: What is the typical die life for progressive stamping of motor stators?
A: Die life depends on the material grade, thickness, and maintenance schedule. For standard silicon steel (e.g., 35WW250) at 0.20–0.50 mm thickness, a high-quality carbide progressive die typically achieves 1–5 million strokes before major refurbishment. Regular maintenance and sharpening extend die life and maintain precision.
Source: Reenives tooling engineering data, 2024.
Q5: Do you offer epoxy powder coating for stamped motor stators?
A: Yes. We use imported epoxy powder coating equipment to apply a uniform, pinhole-free insulation layer on individual laminations. This coating improves corrosion resistance, enhances wire adhesion, and protects against moisture — critical for agricultural and marine drones.
Source: Reenives production specification.
Q6: Can you develop custom motor stator stamping for my specific outrunner drone motor?
A: Absolutely. We support private mould development. Provide us with your required outer diameter, inner diameter, stack length, slot number, tooth profile, and any mounting features. Our R&D team will design and produce custom stamping dies and stator stacks tailored to your motor. Tooling lead time is typically 15–25 days.
Source: Reenives custom development process.
Summary — Get Your Motor Stator Stamping Quote Today
Ready to Improve Your Outrunner Motor Performance with Precision Stator Stamping?
Reenives is a reliable outrunner motor stator stamping stack supplier with 4 years of manufacturing experience, 100+ R&D patents, and 3 production bases. We serve 1000+ enterprises worldwide with high-precision motor stator stamping for UAV and BLDC motors.
📦 Bulk purchasing · 🔧 Private mould development · 🧪 Free samples
🌐 Official Website: www.reenives-bldcmotor.com
📧 Email: linda_reenives@163.com
Contact us now for a free sample and tailored solution for your production scenario.
Dongguan Runlu Motor Technology Co., Ltd.
Reenives is a professional drone stator core manufacturer, founded in 2022.
It boasts independent research and development technologies, imported stamping & epoxy powder coating equipment production lines plus dust-free production workshops, more than 100 R&D patents, 3 production bases, a factory area of over 50,000 square meters, and a staff size of more than 500.
From production to sales, we support bulk purchasing, private mould develop, and samples making, and can provide tailor-made perfect solutions for your production and usage scenarios. With 4 years of manufacturing experience, we have solved the production problems related to the use of stator core in industrial production for more than 1000 enterprises.
We can ship globally (with complete export qualifications). Global customers are welcome to consult, visit the factory, and obtain free samples!
Reenives Runlu Motor Motor Stator Stamping
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