SP-30 Flexure-Based Galvanometer

Square Design for Easy Mounting

Drop-in compatible with several industry square-body galvos


Nutfield Tech's SP-30 Flexure-Based GalvanometerExactly like our SilkScan-30, Nutfield Technology’s SP-30 Flexure-Based Galvanometer with capacitive position sensing offers exceptionally smooth scanning. With it’s square design, the SP-30 moving-magnet galvo is ideal for the most challenging applications such as small scan angle, high-duty cycle raster imaging, and printing. Cross-axis flexures replace ball bearings such that errors due to rumble and lubrication are eliminated, enabling smooth scanning, and long service life.

The SP-30 Flexure-Based Galvanometer is intended for large mirrors; recommended aperture is 20mm to 50 mm. It is ideal for use as the page scanner in raster imaging systems, having great smoothness at low velocity. It’s also great as a tracking scanner for viewing or marking moving objects or for stabilization in imaging systems.

When integrated with Nutfield’s QD-4000 servo amplifier, the SP-30 Flexure-based Galvanometer Scanners deliver excellent speed and accuracy. Due to the spring force inherent in the flexure pivot, some scanning modes, such as large angle point and shoot, are not recommended.

Contact Nutfield Technology for assistance with identifying a solution for your scanning application.


Key features of the SP-30 Flexure-Based Galvanometer:

Aperture range – 20mm to 50mm
Cross Flexure Pivot replaces ball bearings
Ideal for raster applications
Excellent cross-axis repeatability
Flexure pivot reduces on-axis jitter
No lubricants – useful in vacuum applications
Extended life in small angle applications


Specifications for the SP-30 Flexure-Based Galvanometer:

Rated Excursion - Raster±20*
Rated Excursion - Vector±10*
Rotor Inertia 8.25 gm-cm²
Recommended Beam Aperture20 - 50mm
Torque Constant 2.8*10⁵ dyne-cm/amp
Electrical Specifications:
Coil Resistance5.8 ohm
Coil Inductance (@ 1kHz)450 µh
Position Detector:
Angular Sensitivity100 µ amp/°
Gain Drift180 ppm/°C
Offset Drift30 µrad/°C
Repeatability5 µrad
Dynamic Performance:
Step Response Time
(1% of full scale, 99% settled)
20mm (Si) X-Mirror700 µs
50mm X-Mirror2000 µs
Cable lengths available:0.43 m to 0.6 m
Installation:electrically insulated
Storage Temperature:-10 to 50°C
Operating Temperature:0 to 40°C noncondensing
All specifications are using Nutfield Tech's QD-4000 Servo Amplifier.
* Due to spring force inherent in the cross flexure pivots, some types of motion are not recommended. Continuous raster scanning can be performed at larger angles than vector or point-and-hold applications.
Specifications subject to change without notice.


Nutfield’s SP-30 Galvos are ideal for the following applications:

Solar Scribing
High Speed Scanning

Ideal for high-duty cycle or small angle applications

Excellent for high-resolution imaging applications


Accessories available for the SP-30 Galvanometer:

Cables – available lengths 7″ to 24″ (0.0178m to 0.610m)
QD-4000 Servo Amplifier


Documentation for the SP-30 Flexure Galvanometer:

Nutfield Technology’s Flexure Galvanometer Scanners Data Sheet
Nutfield Technology’s QD-4000 Servo Amplifier Data Sheet
Littlefuse Specifications

U.S. patents apply to this product. For details, visit our Virtual Patent Marking page.