stator and rotor cores
High-Precision Motor Cores for Industrial Applications
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Get comprehensive details on material certification, dimensional tolerances, manufacturing processes, quality inspection, and packaging & delivery.
View technical detailsProduct Overview
Our stator and rotor core products are manufactured from premium cold-rolled silicon steel, offering low iron loss, high magnetic induction, and high efficiency. Through precision stamping processes and rigorous quality control, we ensure every core meets international standards.
Our products are widely used in the core components of various motors, serving as key elements that determine motor performance. We operate a complete production line and testing equipment to provide customized solutions based on customer requirements.
Core Advantages
Precision Manufacturing Processes
Utilize advanced stamping equipment and precision molds to ensure product dimensional accuracy reaches IT6-IT7 grade.
Premium Material Selection
Uses premium silicon steel sheets from renowned steel mills such as Baosteel and Wuhan Steel to ensure stable magnetic performance.
Wide Range of Applications
Suitable for industrial motors, automotive motors, home appliances, power tools, and more.
Application Areas
Industrial Motors
Iron cores for various three-phase asynchronous motors, DC motors, and servo motors
Automotive Motor
Electric vehicle drive motors, starter motors, and generator motor cores
Home Appliances
Air conditioner compressor, washing machine motor, fan motor core
Power Tools
Motor cores for handheld tools such as electric drills, angle grinders, and circular saws
Technical Specifications
Detailed technical specifications to ensure precise product selection for your needs.
| Material Grade | B35A250 / B35A300 / 50W470 (Baosteel / Wugang) |
| Material Thickness | 0.35mm / 0.50mm / 0.65mm |
| Outer Diameter Range | Φ50mm - Φ500mm |
| Stack thickness range | 1mm - 20mm |
| Accuracy Class | IT6-IT7 (Critical Dimension) |
| overlapping coefficient | ≥98% |
| Iron loss value P1.5/50 | ≤1.5 W/kg @ 50 Hz |
| Magnetic flux density B50 | ≥1.65T (0.35mm) / ≥1.62T (0.50mm) |
| Insulation Class | Class B (130°C) / Class F (155°C) / Class H (180°C) |
| Ingress Protection Rating | IP20 - IP65 (customizable on demand) |
| Surface Treatment | Phosphating / Epoxy Coating / Insulating Varnish Impregnation |
| Applicable Standards | IEC 60034 / GB/T 755 / JIS C 2521 |
IT6 Precision Technical Data
Per ISO 286-1 tolerance standards, critical dimensions are controlled to IT6 grade. Below are the tolerance ranges and inspection methods for each dimension range.
IT6 Tolerance Reference Table (Based on ISO 286-1)
| Basic Size Range (mm) | IT6 Tolerance (μm) | Typical Measured Value (μm) | Device Detection |
|---|---|---|---|
| >6 - 10 | ±9 | ±3 ~ ±4 | Coordinate Measuring Machine (CMM) |
| >10 - 18 | ±11 | ±4 ~ ±5 | Coordinate Measuring Machine (CMM) |
| >18 - 30 | ±13 | ±5 ~ ±6 | Coordinate Measuring Machine (CMM) |
| >30 - 50 | ±16 | ±6 ~ ±8 | Coordinate Measuring Machine (CMM) |
| >50 - 80 | ±19 | ±7 ~ ±10 | Coordinate Measuring Machine (CMM) |
| >80 - 120 | ±22 | ±8 ~ ±12 | Coordinate Measuring Machine (CMM) |
| >120 - 180 | ±25 | ±10 ~ ±14 | Coordinate Measuring Machine (CMM) |
| >180 - 250 | ±29 | ±12 ~ ±16 | Coordinate Measuring Machine (CMM) |
| >250 - 315 | ±32 | ±14 ~ ±18 | Coordinate Measuring Machine (CMM) |
| >315 - 400 | ±36 | ±16 ~ ±20 | Coordinate Measuring Machine (CMM) |
| >400 - 500 | ±40 | ±18 ~ ±22 | Coordinate Measuring Machine (CMM) |
Environment Detection
- Climate-Controlled Lab: 20°C ± 1°C
- Humidity Control: 45% - 65% RH
- Vibration isolation platform, eliminating environmental interference
Detect Device
- Zeiss CONTURA Coordinate Measuring Machine (Accuracy 1.5μm)
- Mitutoyo Roundness Tester (Accuracy 0.1μm)
- Mitutoyo Roughness Meter (Ra 0.01μm)
Detection frequency
- First Article Inspection: 100% dimensional inspection of the first 100% of each batch.
- Process Sampling: Inspect 5 key dimensions per every 500 units
- Final Inspection: Sample inspection per GB/T 2828.1 AQL standard
Quality Assurance System
Raw Material Testing
Critical Dimension Inspection
Rapid Response Service
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