Linear Motors

Q: What is the difference between iron-core and ironless linear motors?

Iron-core (slotted) motors use ferromagnetic laminations in the coil assembly, providing higher force density and better heat dissipation, but exhibit cogging force. Ironless (slotless) motors have no iron in the coil assembly, offering zero cogging, ultra-smooth motion, and lower moving mass, ideal for high-precision scanning applications.

Q: How do I select the correct linear motor for my application?

Start with your motion profile: move distance, move time, settle time, and payload mass. Calculate the required peak force (for acceleration) and RMS force (for continuous duty). Our application engineers can assist with detailed sizing calculations and motor selection.

Q: What type of feedback device is recommended for linear motors?

Linear motors require direct linear position feedback. Incremental linear encoders (analog or digital) are standard for most applications. Absolute linear encoders (BiSS, EnDat) are recommended for applications requiring immediate position recovery after power loss.

Q: Can you provide complete linear motor stages with bearings and feedback?

Yes. We offer complete linear motor stages including the motor, precision linear guides, linear encoder, cable management, and hard stops. Provide stroke length, payload, and performance requirements for a custom stage quotation.

Q: What is the maximum stroke length available?

Magnet tracks can be assembled in segments to achieve virtually unlimited stroke length. Practical stroke is limited only by the linear encoder scale length and cable management system. We have supplied stages with strokes exceeding 4 meters.

Q: What cooling is required for continuous operation?

Most iron-core motors require liquid cooling for continuous operation at rated force. Ironless motors can often operate with natural convection cooling, but liquid cooling may be required for high-duty cycles. We provide cooling plate and water circuit recommendations.

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Cat	Products Name	Price
AMS-GE-LMS-11	SL13012 High Thrust Linear Stage Peak 1680N
AMS-GE-LMS-12	SL13015 High Thrust Linear Stage Peak 2100N
AMS-GE-LMS-13	SL13030 High Thrust Linear Stage Peak 4200N
AMS-GE-LMS-14	SL5003 Linear Stage W15 Rail Peak 105N
AMS-GE-LMS-15	SL5006 Linear Stage W15 Rail Peak 210N
AMS-GE-LMS-16	SL5009 Linear Stage W15 Rail Peak 315N

Direct-Drive Linear Motors for High-Speed Precision Motion

AIMRSE linear motors provide direct electromagnetic linear force without mechanical transmission elements, enabling high-speed, high-accuracy motion with zero backlash and minimal maintenance. Our portfolio includes iron-core and ironless linear motors with continuous force ratings from 20 N to 10,000 N and peak forces exceeding 25,000 N. With accelerations up to 30 G and speeds exceeding 10 m/s, our linear motors meet the demanding requirements of semiconductor manufacturing, high-speed pick-and-place, and precision machine tools.

Every linear motor is manufactured with high-energy neodymium magnets and precision-wound coils for optimal force density and thermal performance. We offer standard motor modules, custom winding configurations, and complete linear motor stages with integrated feedback and cable management. Whether you need a single axis replacement or a complete multi-axis motion system, our application engineers provide technical support from sizing to commissioning.

Configure Your Linear Motor

Provide force, speed, and stroke requirements for a custom quote.

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Sizing assistance and CAD models available.

Up to 10 m/s Maximum Speed

Up to 30 G Acceleration

20 – 10,000 N Continuous Force

Iron-Core / Ironless Motor Types

Linear Motor Range & Technical Specifications

Select from our comprehensive lineup of iron-core and ironless linear motors. Custom winding configurations and magnet track lengths available.

Type	Continuous Force (N)	Peak Force (N)	Max Speed (m/s)	Coil Length (mm)	Key Features
Iron-Core (Slotted)	100 – 10,000	300 – 25,000	5	150 – 800	High force density, excellent heat dissipation, cost-effective
Ironless (Slotless)	20 – 2,000	60 – 6,000	10	100 – 500	Zero cogging, ultra-smooth motion, ideal for scanning and inspection
Iron-Core (U-Shaped)	200 – 5,000	600 – 15,000	6	200 – 600	High stiffness, low magnetic flux leakage, easy integration
Ironless (Flat)	50 – 1,500	150 – 4,500	8	120 – 400	Low profile, lightweight forcer, ideal for gantry axes
Ironless (Cylindrical)	30 – 800	90 – 2,400	7	150 – 500	Compact, no attractive force, simple mechanical integration
Moving Coil	5 – 500	20 – 2,000	3	50 – 200	Short stroke, high dynamics, ideal for fast focus and Z-axis

Typical Applications by Industry

AIMRSE linear motors enable high-speed, high-precision motion across demanding industrial sectors.

Ultra-smooth ironless linear motor stage for semiconductor wafer inspection

Semiconductor & FPD

Ironless motors for wafer stages, inspection systems, and lithography positioning.

Electronics Assembly Linear Motors

Electronics Assembly

High-speed iron-core motors for pick-and-place, dispensing, and PCB assembly.

CNC Machine Tool Linear Motors

High-Speed Machine Tools

Iron-core motors for high-speed machining, grinding, and laser cutting axes.

Medical Linear Motors

Medical & Life Sciences

Smooth ironless motors for diagnostic imaging, lab automation, and surgical robots.

Flat Panel Display Linear Motors

Flat Panel Display

Long-stroke ironless motors for glass handling and inspection gantries.

3D Printing Linear Motors

Additive Manufacturing

High-dynamics motors for high-speed 3D printing and laser powder bed fusion.

Performance Validation & Field-Proven Reliability

We retrofitted our pick-and-place machines with AIMRSE LM-IC iron-core linear motors. The increase in acceleration and speed reduced our placement cycle time by over 30%, significantly increasing throughput. The motors have operated for over 25,000 hours with zero maintenance, far exceeding the reliability of our previous belt-driven systems.

He**

30% faster cycle time, 25,000+ hrs reliable

Our wafer inspection stages require sub-nanometer velocity ripple to achieve the required imaging resolution. The AIMRSE LM-IL ironless motors with advanced commutation and high-resolution encoders have consistently delivered velocity ripple below 0.01%, enabling us to meet our most demanding customer specifications.

Yu**

< 0.01% velocity ripple

Advanced Electromagnetic Design & Thermal Management

AIMRSE linear motors are engineered with optimized magnetic circuits and advanced thermal management to deliver high force density and reliable continuous operation.

High-Energy Neodymium Magnets
N52H grade neodymium magnets with high coercivity provide exceptional magnetic field strength and thermal stability up to 120°C.
Optimized Coil Winding
Precision-wound copper coils with high slot fill factor maximize force constant (N/A) and minimize electrical losses.
Advanced Thermal Management
Iron-core motors feature integrated cooling channels for liquid cooling. Ironless motors use thermally conductive potting for heat dissipation.
Hall Effect & Thermal Sensors
Integrated Hall sensors for commutation and optional thermistors for real-time temperature monitoring and protection.

Linear motor force and velocity testing Fig. 1. Linear motor undergoing force constant and velocity ripple characterization.

Custom Linear Motor & Stage Engineering

Need a custom winding, special magnet track, or complete linear stage? Our engineering team provides:

Custom Winding Configurations: Optimized force constant, resistance, and inductance for specific drive/motion profiles
Special Magnet Tracks: Custom lengths, curved tracks, or segmented designs for long stroke applications
Complete Linear Stages: linear guide bearings, bearings, encoder, and cable management in a precision base
Multi-Axis Systems: Gantry and stacked-axis configurations with synchronized motion control
CAD & Sizing Support: 3D models and detailed motor sizing based on your motion profile

Explore Custom Motion Systems →

Linear Motor Sizing & Application Support

Proper sizing is critical for optimal performance. Our application engineers provide:

Motion Profile Analysis: Calculation of RMS and peak force requirements based on your duty cycle
Thermal Analysis: Prediction of motor temperature rise and cooling requirements
Drive & Amplifier Selection: Matching linear motor electrical characteristics to advanced servo drives.
Feedback Device Integration: Linear encoder selection and alignment guidance
Commutation & Tuning Support: Assistance with Hall sensor alignment and servo tuning

Explore Sizing Support →

Frequently Asked Linear Motor Questions

What is the difference between iron-core and ironless linear motors?

Iron-core (slotted) motors use ferromagnetic laminations in the coil assembly, providing higher force density and better heat dissipation, but exhibit cogging force. Ironless (slotless) motors have no iron in the coil assembly, offering zero cogging, ultra-smooth motion, and lower moving mass, ideal for high-precision scanning applications.

How do I select the correct linear motor for my application?

Start with your motion profile: move distance, move time, settle time, and payload mass. Calculate the required peak force (for acceleration) and RMS force (for continuous duty). Our application engineers can assist with detailed sizing calculations and motor selection.

What type of feedback device is recommended for linear motors?

Linear motors require direct linear position feedback. Incremental linear encoders (analog or digital) are standard for most applications. Absolute linear encoders (BiSS, EnDat) are recommended for applications requiring immediate position recovery after power loss.

Can you provide complete linear motor stages with bearings and feedback?

Yes. We offer complete linear motor stages including the motor, precision linear guides, linear encoder, cable management, and hard stops. Provide stroke length, payload, and performance requirements for a custom stage quotation.

What is the maximum stroke length available?

Magnet tracks can be assembled in segments to achieve virtually unlimited stroke length. Practical stroke is limited only by the linear encoder scale length and cable management system. We have supplied stages with strokes exceeding 4 meters.

What cooling is required for continuous operation?

Most iron-core motors require liquid cooling for continuous operation at rated force. Ironless motors can often operate with natural convection cooling, but liquid cooling may be required for high-duty cycles. We provide cooling plate and water circuit recommendations.

Accelerate Your Motion System with Direct-Drive Linear Motors

From high-force iron-core motors to ultra-smooth ironless designs, our application engineers will help you select the optimal linear motor for your high-speed, high-precision requirements. Provide force, speed, stroke, and payload details for a detailed quotation, sizing report, and 3D CAD model.