INDUSTRY COMPONENT

Stator Core

The stator core is the stationary magnetic component in electric motors and generators that houses windings to create electromagnetic fields.

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Component Specifications

Definition
The stator core is a laminated steel structure that serves as the stationary part of rotating electrical machines. It provides a low-reluctance path for magnetic flux generated by stator windings, minimizing eddy current losses through thin insulated laminations. The core's slots hold copper or aluminum windings that, when energized, produce a rotating magnetic field to interact with the rotor.
Working Principle
The stator core operates on electromagnetic induction principles. When alternating current flows through windings in its slots, it creates a time-varying magnetic field. The laminated steel construction concentrates this magnetic flux while minimizing energy losses from eddy currents and hysteresis. This magnetic field interacts with the rotor to produce torque in motors or induce voltage in generators.
Materials
Electrical steel laminations (silicon steel, M19, M36 grades), insulation coating (C-4, C-5), varnish for bonding, copper/aluminum windings, end caps (aluminum/steel)
Technical Parameters
  • Core Loss <2.5 W/kg at 1.5T, 50Hz
  • Slot Number 12-72
  • Stack Length 20-500 mm
  • Outer Diameter 50-1000 mm
  • Stacking Factor 0.95-0.97
  • Insulation Class F (155°C) or H (180°C)
  • Lamination Thickness 0.35-0.65 mm
Standards
IEC 60034, IEEE 112, ISO 8821, DIN EN 50332

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stator Core.

stator core electric motor stator generator stator laminated core electrical steel motor components electromagnetic core stator assembly Stator Core in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Stator Assembly

The stationary component of an electric motor that generates a rotating magnetic field when energized.

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Stator

The stationary part of an electric motor that generates a rotating magnetic field.

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Rotor/Stator Assembly (Motor)

The core rotating and stationary electromagnetic assembly within an electric motor.

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Engineering Analysis

Risks & Mitigation
  • Magnetic saturation reducing efficiency
  • Interlamination shorts causing hotspots
  • Core vibration leading to noise/fatigue
  • Improper alignment causing air gap issues
  • Corrosion in harsh environments
FMEA Triads
Trigger: Insufficient insulation between laminations
Failure: Eddy current increase, overheating, reduced efficiency
Mitigation: Quality control of coating thickness, proper stacking pressure, varnish impregnation
Trigger: Poor stacking alignment during assembly
Failure: Increased magnetic reluctance, vibration, noise
Mitigation: Precision stacking fixtures, alignment pins, visual inspection
Trigger: Material impurities in electrical steel
Failure: Higher hysteresis losses, reduced magnetic permeability
Mitigation: Material certification, supplier quality audits, incoming inspection

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm for outer diameter, ±0.1 mm for stack length, ±0.5° for slot angular position
Test Method
Core loss test (Epstein frame), insulation resistance test (megohmmeter), dimensional inspection (CMM), magnetic flux density measurement

Buyer Feedback

★★★★☆ 4.9 / 5.0 (8 reviews)

"Standard OEM quality for Electrical Equipment Manufacturing applications. The Stator Core arrived with full certification."

"Great transparency on the Stator Core components. Essential for our Electrical Equipment Manufacturing supply chain."

"The Stator Core we sourced perfectly fits our Electrical Equipment Manufacturing production line requirements."

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Frequently Asked Questions

Why are stator cores laminated instead of solid?

Laminations reduce eddy current losses by breaking up conductive paths. Thin insulated steel sheets minimize circulating currents induced by changing magnetic fields, improving efficiency.

What materials are used for stator core laminations?

Electrical steel (silicon steel) with 2-3.5% silicon content is standard. Grades like M19, M36, or M43 offer specific magnetic properties. Insulation coatings (C-4, C-5) prevent interlamination shorts.

How does stator core design affect motor performance?

Core geometry, slot design, and material quality directly impact efficiency, torque characteristics, cooling, and noise levels. Proper design minimizes magnetic saturation and losses.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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