Editorial Technical Reference

Linear Motor

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

Technical Definition & Core Assembly

A direct-drive electromagnetic actuator that converts electrical energy into linear motion without mechanical transmission components.

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

Product Specifications

Technical details and manufacturing context for Linear Motor

Definition
A linear motor is a direct-drive electromagnetic actuator that produces linear motion without mechanical transmission components such as ball screws, belts, or gears. It is a core component of precision stages, providing high-speed, high-accuracy positioning through electromagnetic force. By eliminating backlash, friction, and wear associated with rotary-to-linear conversion, it enables superior dynamic performance and positioning repeatability in precision motion systems. The motor operates on the Lorentz force principle: current-carrying coils (primary part) interact with permanent magnets (secondary part) to generate direct linear force. By controlling the phase and magnitude of current in the coils, precise control of position, velocity, and acceleration is achieved along a single axis. Typical specifications include peak force from 500 to 5000 N, continuous force from 200 to 2000 N, maximum speed from 2 to 10 m/s, positioning accuracy from ±0.005 to ±0.02 mm, and repeatability from ±0.001 to ±0.005 mm. Rated voltage is 220–480 V AC (IEC 60038), rated current 5–50 A, ambient temperature 0–40 °C (IEC 60034-1), protection class IP54–IP65 (IEC 60529), and coil insulation class F–H (IEC 60085). Cooling can be natural or water-cooled. Materials include copper windings, neodymium magnets, laminated steel core, and aluminum housing. Stroke length ranges from 100 to 3000 mm, and weight from 10 to 100 kg. These values are directory reference ranges; verify model-specific data with the manufacturer. The motor is suitable for applications requiring high dynamics and precision, such as semiconductor manufacturing, electronics assembly, and machine tools. Selection requires defining load, speed, acceleration, stroke, and environmental conditions. Interfaces include electrical power, feedback (e.g., encoder), and cooling connections. Maintenance involves checking for contamination, cooling system integrity, and magnet condition. Failure modes include overheating, demagnetization, and coil insulation breakdown. Always consult the supplier for application-specific engineering data.
Working Principle
The linear motor operates on the Lorentz force principle. Current-carrying coils (primary part) are placed in a magnetic field generated by permanent magnets (secondary part). When current flows through the coils, a force is produced perpendicular to both the current and magnetic field directions, resulting in linear motion. By controlling the phase and magnitude of the current, the motor can precisely control position, velocity, and acceleration along a single axis. The absence of mechanical transmission components reduces backlash and friction, enabling high-speed, high-accuracy positioning.
Common Materials
Copper windings, Neodymium magnets, Laminated steel core, Aluminum housing
Technical Parameters
ParameterTypical rangeNotes & selection driver
Peak Force500–5000 NDetermines acceleration capability
Continuous Force200–2000 NLimited by thermal dissipation
Maximum Speed2–10 m/sHigher speeds require higher voltage
Positioning Accuracy±0.005–±0.02 mmDepends on feedback resolution
Repeatability±0.001–±0.005 mmCritical for precision applications
Rated Voltage220–480 V ACThree-phase supplyIEC 60038
Rated Current5–50 AContinuous current at rated force
Ambient Temperature0–40 °CDerate above 40°CIEC 60034-1
Protection ClassIP54–IP65Higher IP for harsh environmentsIEC 60529
Cooling MethodNatural–WaterWater cooling for high force density
Magnet MaterialNdFeBHigh energy product
Coil Insulation ClassF–HH class allows higher temperatureIEC 60085
Weight10–100 kgAffects moving mass and installation
Stroke Length100–3000 mmCustomizable per application

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
  • Coil assembly
    Primary moving part containing copper windings that generate electromagnetic field when energized
    Material: Copper, epoxy resin, laminated steel
  • Magnet track
    Stationary secondary part with alternating permanent magnets that interact with coil magnetic field
    Material: Neodymium magnets, steel backing
  • Hall effect sensors Part
    Provide position feedback for commutation and closed-loop control
    Material: Semiconductor materials
  • Cooling system
    Dissipates heat generated during operation to maintain performance and prevent thermal damage
    Material: Aluminum, copper, coolant

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Linear Motor.

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 1.5 bar (typical), IP65/IP67 sealed variants available
other spec: Max velocity: 10 m/s, Max acceleration: 200 m/s², Force constant: 50-500 N/A, Continuous force: 100-2000 N, Peak force: 300-6000 N
temperature: -20°C to +80°C (operating), -40°C to +100°C (storage)
Media Compatibility
✓ Clean dry air environments ✓ Vacuum applications (special variants) ✓ Non-corrosive gas atmospheres
Unsuitable: Submerged or high-humidity corrosive environments without proper IP68+ sealing
Sizing Data Required
  • Required continuous force (N)
  • Maximum travel length (mm)
  • Required positioning accuracy/repeatability (μm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Coil Overheating and Insulation Degradation
Cause: Excessive current due to overloading, poor cooling, or electrical imbalance leading to thermal breakdown of insulation materials.
Magnet Demagnetization or Damage
Cause: Exposure to high temperatures beyond Curie point, mechanical shock, or corrosive environments affecting permanent magnet strength and alignment.
Maintenance Indicators
  • Unusual high-pitched whining or grinding noises during operation indicating bearing wear or coil issues
  • Visible arcing, discoloration, or burning smell from motor windings suggesting electrical faults
Engineering Tips
  • Implement precision alignment procedures and regular thermal monitoring to prevent mechanical stress and overheating
  • Maintain clean, dry operating environment with proper filtration to prevent contamination and corrosion of critical components

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
ISO 9409-1:2004 (Mechanical interface for automation systems) IEC 60034-1:2022 (Rotating electrical machines - Rating and performance) EN 61800-5-1:2007 (Adjustable speed electrical power drive systems - Safety requirements)

Quoted from the published standard.

Manufacturing Precision
  • Positioning accuracy: +/-0.005 mm
  • Flatness of mounting surface: 0.01 mm/m
Quality Inspection
  • Laser interferometer positioning accuracy test
  • Vibration analysis and thermal imaging test

Manufacturers of Linear Motor

12 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.

Changzhou Jkongmotor Co., Ltd.
Changzhou, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
DGR Electric Cylinder Technology Co., Ltd.
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
FUYU Technology
Sichuan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
GIGAGER
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Hearken Flow
Tianjin, CN
Also makes: Butterfly Valve, Ball Valve, Pneumatic Actuator and 9 more
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
Ningbo Alpha Automation Co., Ltd.
Zhejiang, CN
Also makes: Translation Actuators
Listed on the company's own website · profile compiled by CNFX from public sources
NUODUN Linear
Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Datian Valve Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Suzhou JiuJun Intelligent Equipment Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Wuxi St.Hans Pneumatic Valve Actuators Maker Co.,Ltd.
Wuxi, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
View All Factories

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

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Frequently Asked Questions

What is the typical peak force range for this linear motor?

According to the directory reference, the peak force ranges from 500 to 5000 N. However, the exact value depends on the specific model and application. Always verify with the manufacturer.

What cooling methods are available?

The cooling method can be natural or water-cooled. Water cooling is used for high force density applications. The choice depends on thermal requirements and must be confirmed with the supplier.

What is the positioning accuracy and repeatability?

The positioning accuracy is ±0.005 to ±0.02 mm, and repeatability is ±0.001 to ±0.005 mm. These values depend on feedback resolution and system configuration. Verify with the manufacturer for your application.

What standards apply to this linear motor?

Relevant standards include IEC 60038 for voltage, IEC 60034-1 for ambient temperature, IEC 60529 for protection class, and IEC 60085 for insulation class. These are reference standards; compliance must be confirmed with the supplier.

Data Basis

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

Preliminary Technical Classification
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