Industry-Verified Manufacturing Data (2026)

Stator/Rotor assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Stator/Rotor assembly used in the Electrical Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Stator/Rotor assembly is characterized by the integration of Stator core and Rotor core. In industrial production environments, manufacturers listed on CNFX commonly emphasize Electrical steel laminations construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The stationary and rotating electromagnetic core components of an electric motor or solenoid that work together to convert electrical energy into mechanical motion.

Product Specifications

Technical details and manufacturing context for Stator/Rotor assembly

Definition
A critical subassembly within drive motors and solenoids consisting of the stator (stationary electromagnetic component) and rotor (rotating electromagnetic component). In electric motors, this assembly creates the rotating magnetic field that drives mechanical output. In solenoids, it generates linear motion through electromagnetic attraction/repulsion between the stator and rotor components.
Working Principle
When electrical current flows through the stator windings, it creates a magnetic field. This field interacts with the magnetic field of the rotor (which may be permanent magnets or electromagnets), generating torque in motors or linear force in solenoids. The precise arrangement and timing of these magnetic interactions determine the motion characteristics.
Common Materials
Electrical steel laminations, Copper windings, Permanent magnets (neodymium, ferrite), Insulation materials, Structural steel/aluminum
Technical Parameters
  • Outer diameter of stator assembly (mm) Standard Spec
Components / BOM
  • Stator core
    Provides stationary magnetic field through wound coils
    Material: Electrical steel laminations
  • Rotor core
    Rotates within stator field to produce mechanical output
    Material: Electrical steel laminations or permanent magnets
  • Windings
    Carry electrical current to create electromagnetic fields
    Material: Copper wire with insulation
  • Insulation system
    Prevents electrical shorts between components
    Material: Polyimide, epoxy, or composite materials
  • End caps/brackets
    Provide structural support and bearing mounting
    Material: Aluminum or steel
Engineering Reasoning
0-180°C operating temperature, 0-15000 RPM rotational speed, 0-1000 V electrical potential
Lamination delamination at 200°C, bearing seizure at 18000 RPM, insulation breakdown at 1200 V
Design Rationale: Thermal expansion mismatch between copper windings (17×10⁻⁶/°C) and silicon steel laminations (11×10⁻⁶/°C) causing mechanical stress exceeding 350 MPa yield strength
Risk Mitigation (FMEA)
Trigger Electromagnetic force imbalance from 5% air gap asymmetry
Mode: Unbalanced magnetic pull exceeding 2 kN causing rotor-stator contact
Strategy: Precision grinding to maintain 0.5±0.05 mm air gap with laser alignment verification
Trigger Insulation degradation from partial discharge at 650 V/mm field strength
Mode: Inter-turn short circuit creating 1500 A fault current
Strategy: Vacuum pressure impregnation with Class H epoxy resin (180°C thermal rating)

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stator/Rotor assembly.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 10 bar (depends on enclosure)
other spec: Max rotational speed: 15,000 RPM (depends on balance grade)
temperature: -40°C to +180°C (Class H insulation typical)
Media Compatibility
✓ Clean dry air ✓ Industrial lubricants (non-conductive) ✓ Inert gas atmospheres
Unsuitable: Conductive/corrosive fluids (e.g., saltwater spray)
Sizing Data Required
  • Rated power/torque (kW/Nm)
  • Operating voltage/frequency (V/Hz)
  • Required efficiency class (IE1-IE4)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Insulation breakdown
Cause: Thermal aging from overheating, contamination by moisture or oil, or electrical stress exceeding design limits
Bearing failure leading to rotor-stator contact
Cause: Lubrication degradation, misalignment, imbalance, or improper installation causing mechanical wear
Maintenance Indicators
  • Excessive vibration or audible knocking/rubbing noises during operation
  • Overheating detected via thermal imaging or abnormal temperature rise in motor housing
Engineering Tips
  • Implement predictive maintenance with vibration analysis and thermography to detect early-stage mechanical and thermal issues
  • Ensure proper environmental controls (clean, dry, cool operating conditions) and follow strict lubrication schedules with correct grease type/quantity

Compliance & Manufacturing Standards

Reference Standards
ISO 1940-1:2003 (Balance quality requirements for rotors) ANSI/EASA AR100-2020 (Recommended practice for the repair of rotating electrical apparatus) DIN EN 60034-1:2010 (Rotating electrical machines - Rating and performance)
Manufacturing Precision
  • Bore diameter: +/-0.025mm
  • Rotor-stator air gap uniformity: +/-0.1mm
Quality Inspection
  • High-potential (hipot) insulation resistance test
  • Vibration analysis and dynamic balancing test

Factories Producing Stator/Rotor assembly

Verified manufacturers with capability to produce this product in China

✓ 98% Supplier Capability Match Found

T Technical Director from Singapore Jan 15, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from Germany Jan 12, 2026
★★★★☆
"As a professional in the Electrical Equipment Manufacturing sector, I confirm this Stator/Rotor assembly meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Brazil Jan 09, 2026
★★★★★
"Standard OEM quality for Electrical Equipment Manufacturing applications. The Stator/Rotor assembly arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

10 sourcing managers are analyzing this specification now. Last inquiry for Stator/Rotor assembly from Turkey (47m ago).

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Frequently Asked Questions

What materials are used in your stator/rotor assemblies?

Our assemblies use electrical steel laminations, copper windings, permanent magnets (neodymium or ferrite), insulation materials, and structural steel or aluminum components for durability and efficiency.

How do stator and rotor assemblies work together in electric motors?

The stationary stator creates a rotating magnetic field through its windings, which interacts with the rotor's magnetic field (from windings or permanent magnets) to produce mechanical rotation and convert electrical energy into motion.

What industries use your stator/rotor assemblies?

Our assemblies serve industrial equipment manufacturing, automotive EV systems, HVAC systems, industrial automation, power generation, and any application requiring reliable electric motor or solenoid components.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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