Editorial Technical Reference

Stator Assembly

This page explains how Stator Assembly is classified within Electrical Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

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

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Stator Assembly

Definition
The stator assembly is the stationary part of an actuator motor that contains the windings or permanent magnets. When electrical current flows through the windings, it creates a magnetic field that interacts with the rotor's magnetic field to produce torque and rotational motion. In actuator motors, the stator assembly provides precise control over the motor's position, speed, and torque output. This directory entry covers stator assemblies used in electrical equipment manufacturing, typically for industrial motors. The assembly consists of electrical steel laminations, copper windings, insulation materials, and a structural steel frame. Key parameters include the number of poles (2–8), winding resistance (0.5–5.0 Ω), insulation class (F–H per IEC 60085), stack length (50–300 mm), rated voltage (220–690 V AC per IEC 60038), rated power (0.75–355 kW per IEC 60034-1), efficiency class (IE2–IE4 per IEC 60034-30-1), operating temperature (-20–40 °C), IP rating (IP54–IP65 per IEC 60529), core material (M270–M400 per IEC 60404-8-1), and weight (10–500 kg). These values are reference ranges and must be confirmed for the specific model and application. The stator's design determines the motor's speed, torque characteristics, and efficiency. When selecting a stator assembly, verify the required electrical and mechanical specifications with the legal manufacturer or supplier. Always check the applicable standards and ensure the component meets the intended duty cycle and environmental conditions.
Working Principle
The stator assembly operates by converting electrical energy into a rotating magnetic field. When alternating current is applied to the stator windings, it creates a magnetic field that rotates at a specific frequency. This rotating magnetic field induces currents in the rotor (or interacts with permanent magnets on the rotor), creating electromagnetic forces that cause the rotor to turn. The stator's design determines the motor's speed, torque characteristics, and efficiency.
Common Materials
Electrical steel laminations, Copper windings, Insulation materials, Structural steel frame
Technical Parameters
ParameterTypical rangeNotes & selection driver
Number of PolesRequired2–8Number of magnetic poles in the stator winding configuration
Winding ResistanceRequired0.5–5.0 ΩElectrical resistance of stator windings at specified temperature
Insulation ClassRequiredF–HTemperature rating of winding insulation (e.g., Class F, Class H)IEC 60085
Stack LengthRequired50–300 mmLength of laminated steel core in axial direction
Rated Voltage220–690 V ACStandard motor voltagesIEC 60038
Rated Power0.75–355 kWContinuous duty ratingIEC 60034-1
Efficiency ClassIE2–IE4IE4 for premium efficiencyIEC 60034-30-1
Operating Temperature-20–40 °CAmbient, derate above 40°C
IP RatingIP54–IP65Dust and water protectionIEC 60529
Core MaterialM270–M400Silicon steel gradeIEC 60404-8-1
Weight10–500 kgDepends on frame size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Stator Core Part
    Provides magnetic path for flux and supports windings
    Material: Electrical steel laminations
  • Stator Windings Part
    Conduct electrical current to create magnetic field
    Material: Insulated copper wire
  • Insulation System Part
    Electrically isolates windings from core and between phases
    Material: Polyimide film, epoxy, or varnish
  • Terminal Box
    Provides connection points for power supply cables
    Material: Plastic or metal housing

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stator Assembly.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 10 bar (sealed housing dependent)
other spec: Max voltage: 15 kV, Frequency: 50/60 Hz (or variable), Slurry concentration: Not applicable (dry operation only)
temperature: -40°C to 180°C (depending on insulation class)
Media Compatibility
✓ Clean dry air ✓ Inert gases (N2, Argon) ✓ Transformer oil (for immersed cooling)
Unsuitable: Conductive/abrasive slurries or wet environments
Sizing Data Required
  • Motor power rating (kW/HP)
  • Supply voltage and frequency
  • Required torque/speed characteristics

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Insulation breakdown
Cause: Thermal degradation from overheating, contamination by oils/coolants, or electrical stress from voltage spikes
Winding deformation/loosening
Cause: Electromagnetic forces during start-up/load changes, mechanical vibration from misalignment/imbalance, or thermal cycling causing expansion/contraction
Maintenance Indicators
  • Burning odor or visible smoke from windings
  • Unusual humming/buzzing sounds or increased vibration during operation
Engineering Tips
  • Implement regular infrared thermography scans to detect hot spots in windings before catastrophic failure
  • Use vibration analysis and motor current signature analysis (MCSA) to identify developing mechanical/electrical faults early

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 60034-1 Rotating Electrical Machines - Rating and Performance ANSI/EIA 364-13 Electrical Connector Test Procedures

Quoted from the published standard.

Manufacturing Precision
  • Bore Diameter: +/-0.015 mm
  • Stack Height: +/-0.1 mm
Quality Inspection
  • High-Potential (Hi-Pot) Dielectric Strength Test
  • Dimensional Verification via Coordinate Measuring Machine (CMM)

Manufacturers of Stator Assembly

5 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Lam365
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Lamistacks
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Lammotor
Jiaxing, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Motorneo
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Wuxi Newruichi Technology Co., Ltd.
Wuxi, Jiangsu, CN
Also makes: Stepper Motor, Servo Motor, Electric Motor and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

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Frequently Asked Questions

What is the function of a stator assembly in an electric motor?

The stator assembly is the stationary part that generates a rotating magnetic field when energized. This field interacts with the rotor to produce torque and rotation, enabling the motor to convert electrical energy into mechanical motion.

What materials are typically used in a stator assembly?

Common materials include electrical steel laminations for the core, copper windings for the coils, insulation materials to protect the windings, and a structural steel frame for support. Specific grades and types should be confirmed with the manufacturer.

What are the key parameters to consider when selecting a stator assembly?

Important parameters include number of poles, winding resistance, insulation class, stack length, rated voltage, rated power, efficiency class, operating temperature, IP rating, core material, and weight. These values must match the motor's application requirements.

How do I verify that a stator assembly meets my requirements?

Check the manufacturer's datasheet for the specific model and confirm that all parameters (e.g., voltage, power, insulation class) comply with your application's needs. Also verify compliance with relevant standards such as IEC 60034 and IEC 60085.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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