INDUSTRY COMPONENT

Rotor/Armature

Rotor/Armature is the rotating component in electric motors and solenoids that converts electrical energy into mechanical motion through electromagnetic induction.

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Component Specifications

Definition
The rotor (in AC motors) or armature (in DC motors) is the central rotating part of an electric motor or solenoid, consisting of a laminated iron core with conductive windings or bars. When energized, it interacts with the stator's magnetic field to produce torque, enabling rotational motion. In solenoids, it functions as the movable plunger that creates linear motion when magnetically actuated.
Working Principle
Operates on electromagnetic induction: when current flows through windings, it creates a magnetic field that interacts with the stator's field, generating Lorentz force and producing rotational torque (in motors) or linear force (in solenoids).
Materials
Electrical steel laminations (M19-M47 grades), copper or aluminum windings (Class H insulation), steel shaft (AISI 1045/4140), balancing weights, and insulating varnish.
Technical Parameters
  • Power 0.1-500 kW
  • Speed 500-20000 RPM
  • Length 20-1000 mm
  • Voltage 12-690 V
  • Diameter 10-500 mm
  • IP Rating IP54-IP68
  • Insulation Class B/F/H
Standards
ISO 8821, IEC 60034, NEMA MG1, DIN EN 60034

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotor/Armature.

electric motor rotor DC armature solenoid plunger electromagnetic component rotating machinery motor parts industrial components Rotor/Armature Rotor/Armature in Electrical Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Motor/Solenoid

Electromechanical component that converts electrical energy into mechanical motion or force within an adjustment actuator system.

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Engineering Analysis

Risks & Mitigation
  • Electromagnetic interference
  • Overheating due to overload
  • Mechanical imbalance causing vibration
  • Insulation breakdown leading to short circuits
  • Bearing failure
FMEA Triads
Trigger: Insulation degradation from thermal cycling
Failure: Winding short circuit
Mitigation: Use high-temperature insulation materials (Class H), implement thermal protection sensors, and ensure proper cooling
Trigger: Unbalanced mass distribution
Failure: Excessive vibration and bearing wear
Mitigation: Dynamic balancing during manufacturing, regular vibration monitoring, and precision machining of components

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.05 mm for shaft diameter, ±0.1° for balance, ±5% for electrical resistance
Test Method
Hi-pot testing (dielectric strength), surge testing, dynamic balancing, thermal cycling, and vibration analysis per IEC 60034 standards

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 rotor and armature?

Rotor refers to the rotating part in AC motors, while armature specifically denotes the rotating winding assembly in DC motors that carries alternating current. Both serve similar functions but differ in construction and current type.

How do you maintain rotor/armature components?

Regular inspection for insulation damage, bearing wear, and balance issues; cleaning to prevent contamination; and testing winding resistance and insulation resistance periodically.

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.

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