INDUSTRY COMPONENT

Stator/rotor

Core electromagnetic components in actuators converting electrical energy to mechanical motion.

Component Specifications

Definition
The stator and rotor are fundamental electromagnetic components in electric actuators (cylinders/motors). The stator is the stationary part containing windings that create a rotating magnetic field when energized. The rotor is the rotating part that interacts with this magnetic field, converting electrical energy into mechanical torque and rotational motion. Together they form the electromechanical heart of actuators used for precise positioning, force application, and motion control in industrial systems.
Working Principle
Electromagnetic induction: When alternating current flows through stator windings, it creates a rotating magnetic field. This field induces currents in the rotor (in induction motors) or interacts with permanent magnets (in PM motors), generating torque that causes rotor rotation. The rotational motion is then transferred to the actuator mechanism for linear or rotary output.
Materials
Stator: Electrical steel laminations (M19, M36 grades), copper/aluminum windings (Class H insulation), epoxy resin encapsulation. Rotor: Electrical steel laminations, aluminum/copper bars (squirrel cage), permanent magnets (NdFeB, SmCo for PM motors), steel shaft (AISI 1045, 4140).
Technical Parameters
ParameterTypical rangeNotes & selection driver
Voltage24V DC to 690V AC
Power Range0.1-500 kW
Speed Range100-18000 RPM
Torque Range0.1-5000 Nm
Cooling MethodIC411 (TEFC), IC416 (TEAO)
Efficiency ClassIE1 to IE5
Insulation ClassB, F, H
Protection ClassIP54 to IP67

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

Standards
ISO 9001, IEC 60034, NEMA MG1, DIN EN 60034

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Electromagnetic interference
  • Overheating and insulation breakdown
  • Bearing failure leading to rotor-stator contact
  • Demagnetization of PM rotors
  • Vibration-induced mechanical fatigue
FMEA Triads
Trigger: Insufficient cooling or overload
Failure: Stator winding insulation breakdown
Mitigation: Install thermal protection sensors, ensure adequate ventilation, follow rated duty cycles
Trigger: Bearing lubrication failure
Failure: Rotor eccentricity causing stator contact
Mitigation: Implement automatic lubrication systems, monitor vibration levels, use sealed bearings
Trigger: Voltage spikes or phase imbalance
Failure: Insulation puncture or rotor bar cracking
Mitigation: Install surge protectors, use phase monitoring relays, ensure balanced loads

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Air gap: ±0.05mm, Shaft runout: ≤0.02mm, Winding resistance: ±5% of nominal, Balance quality: G2.5 per ISO 1940
Test Method
Hi-pot test (2E+1000V), Megger test (≥100MΩ at 500VDC), Surge test, Vibration analysis, Thermal imaging, Dynamic balancing

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

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.

Manufacturers of Stator/rotor

7 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.

Hangzhou Kiron Motor Co., Ltd.
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Motor Stator Rotor”
View source page ↗ kironmotor.com · checked 2026-09-05
iMotorcore
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “stator and rotor”
View source page ↗ imotorcore.com · checked 2026-09-13
JYSTATOR
Dongguan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “215mm EV Stator & rotor”
View source page ↗ jystator.com · checked 2026-09-04
Lam365
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Stator and rotor Heat Treatment”
View source page ↗ lam365.com · checked 2026-08-31
Lamistacks
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “interlocking stator and rotor cores”
View source page ↗ lamistacks.com · checked 2026-08-31
Motorneo
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Glue Bonding Stator And Rotor”
View source page ↗ motorneo.com · checked 2026-08-31
Wuxi Newruichi Technology Co., Ltd.
Wuxi, Jiangsu, CN
Also makes: Stepper Motor, Stator Assembly, Servo Motor and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Motor Stator and Rotor Core”
View source page ↗ newruichi.com · checked 2026-08-31

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

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Frequently Asked Questions

What's the difference between stator and rotor in actuators?

The stator is the stationary component with windings that create the magnetic field, while the rotor is the rotating part that converts electromagnetic energy into mechanical motion. In actuators, this rotation is typically converted to linear motion through mechanisms like ball screws or gears.

How do I maintain stator/rotor components?

Regular maintenance includes checking winding insulation resistance (megger test), cleaning ventilation paths, monitoring bearing temperatures, checking air gaps, and verifying alignment. For PM rotors, avoid demagnetization by preventing overheating and mechanical shocks.

What causes stator winding failures?

Common causes include thermal overload, voltage spikes, moisture ingress, vibration-induced insulation wear, contamination, and manufacturing defects. Proper cooling, surge protection, and regular inspection can prevent most failures.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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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