Description:
The AKI-CDF-MOD-10 is a modular ironless linear motor from Kollmorgen’s AKI product line. The CDF designation indicates a Compact Direct-drive Force configuration. MOD-10 specifies the modular frame size variant. This actuator eliminates all mechanical transmission elements (gears, belts, ballscrews) to deliver pure linear motion with superior dynamic performance.

Key Specifications:

• Motor Type: Ironless (Coreless) Linear Servo Motor
• Configuration: CDF (Compact Direct-drive Force)
• Modular Frame: MOD-10
• Continuous Force Output: Up to 340 N (varies by coil length)
• Peak Force Output: Up to 1,020 N (3× continuous, short duration)
• Magnet Track: Halbach Array Permanent Magnets
• Coil Construction: Copper Windings with Epoxy Encapsulation
• Maximum Continuous Velocity: Up to 10 m/s
• Maximum Acceleration: Up to 300 m/s²
• Positioning Accuracy: ±0.5 µm (with appropriate feedback)
• Repeatability: ±0.1 µm

Technical Features:

• Zero Cogging Force due to ironless coil design
• Conduction-Cooled via motor housing to machine structure
• Force Ripple: Less than 1% of peak force
• Thermal Time Constant: Approximately 8–12 minutes (depends on mounting)

Structural Characteristics:

• Moving Element: Forcer coil assembly with no iron core
• Stationary Element: Magnet track with Halbach magnet array
• Air Gap: Minimized for maximum force density
• Encapsulation: Fully potted coil for environmental protection
• Mounting Method: Direct bolt-on to machine base

Working Principle:
Electromagnetic Lorentz force principle. Current flowing through the ironless coil interacts with the permanent magnet field to produce linear force directly, without any mechanical conversion. Force = B × I × L (magnetic flux density × current × conductor length).

Advantages:

• Zero backlash, zero wear — no mechanical transmission
• Highest force density in the AKI class
• Ultra-smooth motion with zero cogging
• Low maintenance — no lubrication, no replacement parts
• Compact modular design enables rapid system integration

Applicable Industries: Semiconductor wafer handling, laser cutting and welding, medical device manufacturing, precision metrology, electronic assembly, optical alignment systems

Installation Requirements:

• Mount magnet track to machine base with precision flatness ≤ 0.02 mm/m
• Align forcer to track with lateral tolerance ≤ 0.05 mm
• Ensure adequate thermal conduction path to heatsink or machine structure
• Use non-magnetic fasteners only (stainless steel or titanium)

Usage Notes:

• Do not exceed rated continuous force to prevent coil overheating
• Maintain clean environment to prevent particle contamination in the air gap
• Verify encoder alignment and signal integrity before commissioning