行业组件数据 · 2026

背铁

Back Iron is a ferromagnetic component in linear motors that enhances magnetic flux density and structural stability.

技术定义与适配语境
典型 背铁 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

The Back Iron is a critical component in linear motor systems, specifically in Mover/Forcer assemblies. It serves as a magnetic return path, concentrating and directing magnetic flux from permanent magnets or electromagnets to optimize force generation and efficiency. This component provides structural rigidity to the moving element while minimizing magnetic leakage and eddy current losses.

组件规格

定义
The Back Iron is a critical component in linear motor systems, specifically in Mover/Forcer assemblies. It serves as a magnetic return path, concentrating and directing magnetic flux from permanent magnets or electromagnets to optimize force generation and efficiency. This component provides structural rigidity to the moving element while minimizing magnetic leakage and eddy current losses.
工作原理
The Back Iron operates on electromagnetic principles, completing the magnetic circuit in linear motors. When current flows through windings, it creates magnetic fields that interact with permanent magnets. The Back Iron's high permeability material provides a low-reluctance path, concentrating flux lines to maximize Lorentz force on the mover while maintaining structural integrity during high-speed linear motion.
材料
Electrical steel (silicon steel laminations)Soft magnetic composites (SMC)or high-permeability alloys like Permendur. Typical specifications: 0.35-0.5mm thickness laminationssilicon content 3-3.5%core loss <2.5W/kg at 1.5T/50Hz.
Core Loss
<3.0 W/kg @ 1.5T, 400Hz
Surface Finish
Ra 1.6-3.2 μm
Flatness Tolerance
≤0.05mm/100mm
Thermal Conductivity
20-40 W/m·K
Magnetic Permeability
>4000 μr
Operating Temperature
-40°C to 150°C
Saturation Flux Density
1.8-2.0 Tesla
标准
ISO 14887DIN 17405IEC 60404-8-7

行业分类与别名

背铁 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Insufficient lamination insulation->Increased eddy current losses leading to overheating->Implement proper interlamination insulation coating and quality control
Material impurities in electrical steel->Reduced magnetic permeability and increased hysteresis losses->Source materials with certified purity levels and implement incoming inspection
Improper assembly pressure->Delamination and reduced structural integrity->Use controlled torque/pressure during assembly with monitoring systems

工业生态与工程逻辑

0
Magnetic saturation at high currents
1
Eddy current heating
2
Mechanical resonance at high speeds
3
Corrosion in humid environments
4
Delamination under thermal cycling

合规与检测

tolerance
±0.02mm dimensional, ±0.5° angular alignment, <0.1mm flatness deviation
test method
Magnetic flux density measurement (Hall probe), eddy current testing, thermal imaging, vibration analysis per ISO 14887

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the primary function of Back Iron in linear motors?

The Back Iron serves as a magnetic return path that concentrates flux, enhances force density, and provides structural support to the moving element in linear motor systems.

Why are laminations used in Back Iron construction?

Laminated electrical steel reduces eddy current losses by interrupting current paths, improving efficiency especially at higher frequencies in linear motor applications.

How does Back Iron affect linear motor performance?

Proper Back Iron design increases force density by 15-30%, reduces cogging forces, improves thermal management, and extends operational lifespan through reduced magnetic saturation.

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URN:CNFX:ME:UNIT:BACK_IRON