What to Look for When Buying a Galvo Laser System

1. Galvo Scanner Specifications

Check these specs carefully:

• Step response time — <1 ms for marking applications
• Repeatability — ±0.01 mm or better
• Marking speed — 7,000+ mm/s for surface marking
• Long-term stability — Minimal drift over temperature range

2. F-Theta Lens Selection

Match the lens to your parts:

• Small parts (<100 mm) — 160 mm F-theta (110 x 110 mm field)
• Medium parts (100–150 mm) — 210 mm F-theta (175 x 175 mm field)
• Large parts (150–250 mm) — 254–330 mm F-theta (200–300 mm field)

3. Laser Source and Power

The galvo system is separate from the laser source. Common combinations:

• 20W Raycus + Sino-Galvo — Budget marking setup ($2,000–$3,000)
• 30W JPT MOPA + Scanlab — Professional marking with color capability ($5,000–$8,000)
• 50W JPT + Scanlab — High-power marking and engraving ($6,000–$10,000)

4. Software and Control

The marking software translates your designs into galvo movements. Key considerations:

• EZCad — Most common, included with most Chinese systems. Functional but dated interface.
• EZCad2/EZCad3 — Upgraded versions with better 3D support and file handling
• LaserCAD / proprietary — Some manufacturers offer custom software with better UX

5. Red Pointer Alignment

Essential for setup — a visible red laser diode co-aligned with the marking beam lets you see where marks will land before firing the main laser. Don’t buy a system without one.