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Stator Laminations Component – Electrical Equipment Manufacturing

Component Specifications

Definition

Stator laminations are precision-stamped electrical steel sheets that are stacked and bonded to create the stator core in electric motors and generators. They provide a low-reluctance path for magnetic flux while minimizing energy losses through insulation between layers. The laminations feature precisely shaped slots to accommodate stator windings and maintain consistent air gaps with the rotor.

Working Principle

Stator laminations work by concentrating and directing magnetic flux generated by stator windings. The laminated structure prevents circulating eddy currents that would occur in solid metal cores, reducing heat generation and improving efficiency. Magnetic flux passes through the steel while electrical currents are confined to the windings.

Materials

Non-oriented electrical steel (NOES) grades such as M250-35A, M400-50A, or silicon steel alloys with 2-3.5% silicon content. Thickness typically ranges from 0.35mm to 0.65mm with insulation coatings of C-4, C-5 organic or inorganic types.

Technical Parameters

Core Loss ≤ 4.0 W/kg at 1.5T, 50Hz
Thickness 0.5mm
Burr Height ≤ 0.03mm
Material Grade M400-50A
Stacking Factor ≥ 0.97
Flatness Tolerance ≤ 0.1mm/100mm
Insulation Resistance ≥ 100 Ω·cm²

Standards

ISO 16124, IEC 60404-8-7, DIN EN 10106

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stator Laminations.

Parent Products

This component is used in the following industrial products

Rotor/Stator (Motor)

The rotating (rotor) and stationary (stator) electromagnetic components that form the core of an electric motor.

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Engineering Analysis

Risks & Mitigation

Magnetic saturation leading to efficiency drop
Interlamination short circuits reducing insulation
Mechanical deformation affecting air gap consistency
Corrosion in humid environments
Resonance vibrations at specific frequencies

FMEA Triads

Trigger: Insufficient insulation coating thickness or damage
Failure: Increased eddy current losses and overheating
Mitigation: Implement automated coating thickness measurement and visual inspection systems

Trigger: Improper stacking pressure during assembly
Failure: Reduced stacking factor and increased magnetic reluctance
Mitigation: Use controlled-pressure stacking fixtures with pressure monitoring

Trigger: Material impurities or inconsistent grain orientation
Failure: Localized magnetic saturation and uneven flux distribution
Mitigation: Implement material certification and magnetic property testing for each batch

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

Slot dimensions ±0.05mm, outer diameter ±0.1mm, angular alignment ±0.5°

Test Method

Epstein frame testing per IEC 60404-2 for magnetic properties, insulation resistance testing per ASTM A976, dimensional verification with CMM

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

Why are stator cores laminated instead of solid?

Lamination reduces eddy current losses by breaking up conductive paths. Solid cores would generate significant heat from circulating currents in changing magnetic fields, reducing efficiency by 15-25%.

What materials are used for stator laminations?

Non-oriented electrical steel with silicon content (2-3.5%) is standard. Silicon increases electrical resistivity while maintaining magnetic permeability. Coatings provide interlamination insulation.

How are stator laminations manufactured?

Manufacturing involves precision blanking/punching of electrical steel coils, deburring, insulation coating application, stacking with interlocking features or bonding, and heat treatment for stress relief.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Stator Laminations