SG8220-G 20mm Laser closed loop galvanometer for 3d printer
The updated version of SG8220E. This 20mm laser closed loop galvanometer is with water cooling system. It is mainly used in 3D printer, laser welding and laser cleaning application.
SG8220-G 20mm Laser closed loop galvanometer for 3d printer
The updated version of SG8220E. This 20mm laser closed loop galvanometer is with water cooling system. It is mainly used in 3D printer, laser welding and laser cleaning application.
Product Features
Technical Parameters
Product Features
Features of Closed loop galvanometer
- Adopts all-aluminum integrated design with high sealing grade and strong adaptability to the environment.
- A water cooling circulation system is adopted to effectively control the working temperature of the galvanometer and ensure the whole machine runs continuously for a long time
- Differential photoelectric sensor for accurate detection of motor rotor position, good linearity, lower drift, high resolution and repeat positioning.
- Accurate load design for 20mm mirrors, high accuracy of motor assembly, reasonable structure, very small static friction coefficient and zero offset, all ensured the best dynamic characteristics for the whole system.
- The whole system adopted the optimization Designing of electromagnetic compatibility, with high signal-to-noise ratio and strong anti-interference ability.
Technical Parameters
| Aperture | 20mm |
| Wavelength | 355nm/532nm/1030nm-1080nm/9.4µm-10.6µm Broadband Coatings:350nm-12µm |
| Water cooling control | |
| Water temperature | 25±3℃ |
| Maximum water pressure | ＜3bar |
| Flow rate | >1L/min |
| Water pipe specification | Outer diameterφ6mm,Inside diameterφ4mm |
| Speed | |
| Marking Speed(1) | 6000mm/s |
| Writing Speed(2) | 300cps |
| Step Response Time(1% of full scale) | 700μs |
| Step Response Time(10% of full scale) | 1320μs |
| Tracking Error Time | ≤374μs |
| Precision and Error | |
| Linearity | 99.9% |
| Repeatability (RMS) | ＜8μRad |
| Gain Error | ＜5mRad |
| Zero Offset | ＜5mRad |
| Long-term Drift Over 8 Hours | ＜0.5mRad |
| Scale Drift | ＜40PPM/℃ |
| Zero Drift | ＜15μRad/℃ |
| Power and Signal | |
| Input Voltage | ±24VDC |
| Rated Current | 4A |
| Interface Signal | Digital:XY2-100 |
| Analog:±5V | |
| Mechanical Scan Angle(3) | ±12.5° |
| Working Current, Temperature, Dimension | |
| Working Temperature | 0℃–45℃ |
| Storage Temperature | -10℃–60℃ |
| Galvanometer Scanner Dimension (LxWxH) | 170x141x130mm |
| Galvanometer Scanner Weight | ≈4.13Kg |
Note: The above data are tested after 30 min warm-up
(1)With F-theta objective, F=160mm, marking 2mm height single character
(2) With F-theta objective, F=160mm, marking 1mm height single character per second
(3) The factory default value is ±12.5°. Other special requirement is available to be customized.
