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Kollmorgen VSA28-0012
Model Series: VSA Series (Voice Coil Actuator)
Product Overview:
The VSA28-0012 is a voice coil linear actuator from the VSA28 product line. “28” = 28mm coil diameter / actuator size. “0012” = 12mm stroke length, 00 = standard force variant. This is a direct-drive linear motor producing force without mechanical transmission.
Detailed content
Key Technical Specifications:
| Parameter | Value |
|---|---|
| Type | Voice Coil Linear Actuator (Moving Coil) |
| Coil Diameter | 28mm |
| Stroke Length | ±6mm (12mm total, 0012 = 12mm peak-to-peak) |
| Continuous Force | 18N (rated) |
| Peak Force | 54N (3× rated, 10 sec) |
| Coil Resistance | 4.5 Ω (at 20°C) |
| Inductance | 0.8 mH |
| Moving Mass | 0.018 kg (18g) |
| Resonant Frequency | 320 Hz (no load) |
| Position Sensor | Integrated LVDT or Hall sensor (variant dependent) |
| Operating Voltage | ±24VDC (bipolar) |
| Force Constant (Kf) | 3.0 N/A |
| Back-EMF Constant (Ke) | 3.0 V/(m/s) |
| Operating Temperature | -10°C to +60°C |
| Enclosure Rating | IP40 (open frame) |
| Weight (approx.) | 0.12 kg |
| Mounting | Threaded mounting holes (M3) |
Working Principle:
A current-carrying coil moves within a permanent magnet gap. Force is directly proportional to coil current: F = Kf × I. No gear reduction, no backlash, no friction from mechanical transmission.
Advantages:
- Zero backlash — ideal for precision positioning
- Infinite resolution — limited only by position sensor
- High bandwidth — up to 1 kHz closed-loop
- No cogging or detent force
Applicable Industries:
Optical lens positioning, semiconductor inspection, medical imaging (OCT scanners), vibration testing, precision valving, aerospace actuation.
