Products
Robot Joint Motor Stator And Rotor Cores
Product Description
The Robot Joint Motor Stator and Rotor Cores are the electromagnetic heart of high-torque frameless joint motors, directly dictating torque density and motor efficiency. To suppress eddy current losses and maximize magnetic flux density, we utilize premium 0.2mm or 0.35mm ultra-thin silicon steel laminations. Each set of Robot Joint Motor Stator and Rotor Cores is stacked and bonded under controlled hydraulic pressure using high-precision progressive dies. This meticulous process ensures a high stacking factor of over 97%, allowing the motor to generate maximum torque with minimal thermal buildup.
For motor manufacturers and robotic system integrators, the geometric concentricity of the Robot Joint Motor Stator and Rotor Cores is critical to eliminating cogging torque and acoustic noise. We utilize precision wire-cutting and stamping systems, validating the inner and outer diameters of the Robot Joint Motor Stator and Rotor Cores using our German Zeiss CMM. Our aerospace-grade AS9100D quality management ensures that our cores resist magnetic degradation and maintain strict dimensional stability over long-term continuous cycles. By sourcing directly from our factory, you ensure your motor assemblies deliver smooth, ripple-free motion.
Product Specifications
Lamination Material: Nippon Steel / Baosteel Ultra-Thin Silicon Steel (0.2mm, 0.35mm)
Stacking Factor: ≥ 97%
Concentricity (Inner to Outer Dia.): ≤ 0.015 mm
Coating: Self-bonding varnish or specialized C5/C6 insulating coating
Skew Angle Accuracy: ±0.2 degrees (For skewed rotor designs)
Application Fields
- Frameless Torque Motors: Core components for hollow-shaft joint motors.
- Humanoid Robot Actuators: High-efficiency, compact stator and rotor core packs.
- Precision Direct Drive (DD) Motors: Stator and rotor assemblies for high-precision rotary tables.
Customization Capabilities
We provide complete custom stamping, wire-cutting, and stacking services. Whether you require straight slots, skewed slots, specialized self-bonding lamination sheets, or integrated permanent magnet slots in the rotor, our engineering team can process your design. We deliver fully bonded sample cores within 7 to 45 working days.
Packaging & Shipping
Rust Prevention:
Vacuum-sealed in anti-corrosion barrier bags with high-absorption desiccants to prevent any oxidation of the raw steel laminations.
Support Core:
Packaged on specialized mandrel shafts to prevent lamination shifting or bending during transport.
Carton:
Robust export-grade wooden cases to protect against heavy vibrations.
Commercial Terms:
Standard EXW and FOB Nanjing/Shanghai, with complete customs classification codes provided for easy importation.
FAQ
What silicon steel grades do you typically use for high-frequency robotic motors?
We regularly process high-grade ultra-thin materials such as 20NO1200 and 35NO1550 to minimize core losses under high-frequency switching.
Can you handle skewed rotor stacking?
Yes, our automated stacking fixtures can programmatically skew rotor laminations at precise angles (up to ±0.2-degree accuracy) to minimize cogging torque.
What is the minimum order quantity (MOQ) for custom motor core laminations?
For customized prototypes processed via precision wire EDM, our MOQ is 10 sets. For large-volume progressive die stamping, we can negotiate based on tooling costs.
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