INDUSTRY COMPONENT

Stator

Stationary electromagnetic component in servo/stepper motors that generates rotating magnetic fields to drive rotor motion.

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Component Specifications

Definition
The stator is the stationary part of an electric motor, specifically in servo and stepper motors, consisting of a laminated steel core with precisely wound copper windings arranged in slots. When energized with controlled electrical currents, it produces a rotating magnetic field that interacts with the rotor's magnetic field to create torque and precise rotational motion. In servo motors, stators enable high-torque, variable-speed operation with feedback control, while in stepper motors, they facilitate precise incremental positioning through sequential phase activation.
Working Principle
Operates on electromagnetic induction principles: when alternating or pulsed currents flow through the stator windings, they generate a rotating magnetic field. This field interacts with the rotor's permanent magnets or magnetic reluctance, producing mechanical torque. In servo motors, the stator's field rotation is synchronized with rotor position via feedback, while stepper motors use digital pulse sequences to advance the magnetic field in discrete steps.
Materials
Laminated electrical steel (M19-M47 grades) for core reduction of eddy currents, copper magnet wire (typically 18-24 AWG) with Class F (155°C) or higher insulation, epoxy or varnish impregnation for thermal and mechanical stability, insulating paper or slot liners (Nomex or polyester), and aluminum or steel housing.
Technical Parameters
  • Current Rating 1A-50A per phase
  • Voltage Rating 24V-480V AC/DC
  • Insulation Class Class F (155°C) or Class H (180°C)
  • Slot Fill Factor 70%-85%
  • Inductance per Phase 1mH-100mH
  • Resistance per Phase 0.1Ω-10Ω
  • Winding Configuration 3-phase for servo, 2-phase or 4-phase for stepper
Standards
ISO 9001, IEC 60034, NEMA MG1, DIN EN 60034

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stator.

stator servo motor stator stepper motor stator electric motor components electromagnetic stator motor winding industrial motor parts motion control Stator in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Servo/Stepper Motors

Precision electric motors that provide controlled rotational motion for positioning and speed control in industrial automation systems.

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Drive Motor

Electric motor that provides rotational power to drive the blending mechanism in pharmaceutical powder blending equipment

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Main Motor

The primary electric motor that drives the cutting blade of a panel saw.

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Engineering Analysis

Risks & Mitigation
  • Insulation breakdown due to overheating or voltage spikes
  • Winding short circuits from mechanical damage or contamination
  • Core saturation leading to efficiency loss
  • Misalignment causing vibration and reduced lifespan
FMEA Triads
Trigger: Thermal overstress from excessive current or poor cooling
Failure: Insulation degradation and winding short circuit
Mitigation: Implement temperature sensors, use high-temperature insulation materials, and ensure adequate ventilation or cooling systems
Trigger: Voltage transients from drive electronics
Failure: Insulation puncture and arc damage
Mitigation: Install surge protection devices, use reinforced insulation, and follow proper grounding practices

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Winding resistance ±5%, inductance ±10%, dimensional tolerances per ISO 2768-m
Test Method
Hi-pot testing (1500V AC for 1 minute), insulation resistance test (>100MΩ at 500V DC), winding resistance measurement, inductance verification via LCR meter, and thermal cycling tests

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

What is the difference between servo motor stators and stepper motor stators?

Servo motor stators typically use 3-phase windings for smooth, high-speed rotation with feedback control, while stepper motor stators have 2-phase or 4-phase windings for precise step-by-step positioning without feedback. Servo stators are optimized for dynamic torque, whereas stepper stators focus on holding torque and step accuracy.

How do stator windings affect motor performance?

Winding configuration, wire gauge, and turn count directly impact torque, speed, efficiency, and thermal characteristics. Higher turn counts increase torque but reduce speed, while thicker wire lowers resistance for higher current capacity. Proper winding design minimizes cogging, reduces losses, and ensures compatibility with drive electronics.

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.

Request Manufacturing Insight for Stator

Stationary Vanes Stator (Electric) / Housing (Hydraulic)