A linear motor is essentially an electric motor that produces linear motion directly—no need for rotary-to-linear conversion like with ball screws or belts.
Instead of spinning, it pushes or pulls a moving forcer (coil) along a stationary magnet track.
🏭 About Hiwin
Hiwin Technologies Corp. is a Taiwan-based company well-known for:
Linear guides
Ballscrews
Industrial robots
Linear motors (iron core, ironless, and tubular)
Hiwin offers several types of direct-drive linear motors, giving you smoother motion, faster speeds, higher accuracy, and zero backlash compared to mechanical systems.
🧲 Types of Hiwin Linear Motors
1. Iron Core Linear Motors (Model: LMC)
Forcer: Copper coil + laminated iron core
Stator: Permanent magnet track
Features:
High force output
Good heat dissipation
Excellent for heavy-duty applications
Applications: Machine tools, heavy-load automation, printing
2. Ironless Linear Motors (Model: LMU)
Forcer: Coil with no iron (less cogging)
Stator: Dual magnet track (U-shaped)
Features:
No cogging (very smooth)
Lightweight forcer
Ideal for precision/high-speed moves
Applications: Semiconductor, electronics, inspection
3. Tubular Linear Motors (Model: LMT)
Structure: Cylindrical – coil inside a tube with magnets
Features:
Compact
Easy to integrate
Good for linear actuators
Applications: Pick-and-place, packaging, actuators
📐 Key Specs (varies by model)
Spec Range (Typical)
Peak Force 30 N – 2500+ N
Continuous Force 10 N – 1000+ N
Speed Up to 5 m/s
Repeatability Sub-micron possible
Stroke Length Customizable (from cm to meters)
Cooling Options Natural or water-cooled
🛠️ Components in a Hiwin Linear Motor Setup
Forcer (moving part) – the coil assembly
Magnet track (stator) – fixed magnets
Linear encoder – for position feedback
Servo driver/controller – to manage power & motion
Cable carrier/drag chain – to manage wiring
💡 Advantages of Hiwin Linear Motors
✅ Direct drive = no backlash, no gear wear
✅ High acceleration/deceleration
✅ Smooth and precise (great for servo loops)
✅ Long life, less maintenance (no mechanical contact)
✅ Can operate in vacuum or cleanroom settings (ironless types)
📘 Example: Hiwin LMC Series (Iron Core)
Peak Force: Up to 2000+ N
Voltage: 230 V
Cooling: Optional water-cooled versions
Mounting: Easy integration with Hiwin linear guideways
📦 Common Applications
CNC machines (spindles, axes)
Semiconductor manufacturing
Flat panel displays (LCD/LED lines)
Laser cutting/etching
Medical automation
High-speed inspection systems
Robotics
🧠 Integration Considerations
Choose proper motor driver (servo amplifier) compatible with the coil specs
Pair with a linear encoder (optical/magnetic) for closed-loop control
Consider cooling requirements for high-duty cycles
Align the forcer precisely over the magnet track to avoid magnetic losses
📎 Helpful Extras from Hiwin
CAD models and datasheets available for each motor
Motion simulation tools
Application engineering support
Pairing kits with Hiwin linear guideways and carriages
