Galvanometer Scanners
QS-30 Moving Magnet Galvanometer
The "workhorse" of galvos
Nutfield Technology’s QS-30 Galvanometer is a moving magnet galvo offering strong performance and value for steering 30mm and 45mm aperture galvo mirrors. When integrated with Nutfield’s QD-4000 servo amplifier, the QS-30 galvanometer scanners deliver accuracy and speed in compact, affordable configurations.
- Recommended apertures20mm, 30mm, 45mm
- Product familyOptical Position Detector Galvos

Overview
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.
Key Features
Key features of the QS-30 Galvanometer:
- Aperture range – 20mm to 50mm
- Ceramic rotor for faster scanning
- High Linearity – >99.9%
- Dynamic Performance – 440 µs
- High Accuracy Capacitive Sensor
- Available as component in scanning subsystems
Specifications
Values as published by Nutfield Technology.
Specifications for the QS-30 Galvanometer:
| Specifications: | Value |
|---|---|
| Mechanical Specifications: | QS-30 Galvanometer |
| Rated Excursion (±34 max) | ±22.5 °Optical |
| Rotor Inertia | 5.1 gm-cm² |
| Torque Constant | 180,000 dyne-cm/amp |
| Electrical Specifications: | |
| Coil Resistance | 5.8 ohm |
| Coil Inductance (@ 1kHz) | 450 µh |
| Position Detector: | |
| Linearity* | >99.9% |
| Gain Drift | <100 ppm/°C |
| Offset Drift | 15 µrad |
| Repeatability | 15 µrad |
| Dynamic Performance: | |
| Step Response Time | |
| (1% of full scale, 99% settled) | |
| 20mm (Si) X-Mirror | 440 µs |
| 30mm X-Mirror | 650 µs |
| 45mm (Si) X-Mirror | 700 µs |
| Cable lengths available: | 0.43 to 0.6m |
| Storage Temperature: | -10 to 50°C |
| Operating Temperature: | 0 to 40°C noncondensing |
| All specifications are using Nutfield Tech’s QD-4000 Servo Amplifier. |
Applications
Nutfield’s QS-30 Galvos are ideal for the following applications:
- Laser Cutting
- Laser Welding
- Solar Scribing
- Micromachining
- Textile Cutting and Embossing
Accessories
Accessories available for the QS-30 Galvanometer:
- Cables – available lengths 7″ to 24″ (0.0178m to 0.610m)
- QD-4000 Servo Amplifier
Downloads
Documentation for the QS-30 Galvanometer:
PDFNutfield Technology’s QS-30 Galvanometer Scanners Data SheetDatasheet / PDF / 328 KBPDFNutfield Technology’s QD-4000 Servo Amplifier Data SheetDatasheet / PDF / 415 KBPDFLittlefuse SpecificationsDatasheet / PDF / 520 KB
U.S. patents apply to this product. For details, visit our Virtual Patent Marking page.
Need help choosing the right scanning solution?
Contact Nutfield Technology for assistance with identifying a solution for your scanning application.


