Desktop UV Laser Marker
An enclosed UV bench build with a motorised column for repeatable small-part marking.
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355 nm Cold Marking
Split UV Laser Marking Machine
At 355 nm a UV beam breaks chemical bonds instead of boiling material away, so the mark arrives with almost no heat left behind. That cold process is what lets this marker work on thin plastics, glass, silicon and sterile medical parts — and the split head lets it reach into the tightest work envelope on your line.
3/5/10WPower options
355 nmWavelength
0.55 mmBeam diameter
35 kgMachine weight
Cold Processing
Cold Marking at 355 nm
Shorter wavelength means a smaller focused spot and a photochemical reaction rather than a thermal one. The material is altered at the surface without a melt zone, which is why delicate substrates survive the process intact.
- Fine spot, fine detailA 0.55 mm beam diameter with M² of 1.2 or better produces very small features and sharp edges.
- Almost no heat-affected zoneThin plastics, glass and silicon wafers mark without warping, cracking or delamination.
- Permanent and readableMarks resist water, chemicals and high temperature, which matters for long-term traceability.
- Air-cooled UV sourceAn air-cooled head with smart speed control keeps the laser efficient and easy to install.
Process Comparison
Cold Processing Versus Heat-Affected Marking
The same part marked by three wavelengths. The difference is how much heat the process leaves behind.
| Aspect | UV 355 nm (cold) | Fiber 1064 nm (thermal) | CO2 10.6 µm (thermal) |
|---|---|---|---|
| Interaction | Photochemical bond breaking | Surface heating and oxidation | Absorption and ablation |
| Heat-affected zone | Minimal | Localised melt zone | Wider heat zone |
| Thin plastics | Safe, no distortion | Risk of melting or charring | Risk of melting |
| Glass and silicon | Clean, crack-free | Poor absorption | Frosts the surface |
| Typical mark | Fine, high-contrast, shallow | Dark, deep, durable | Engraved, frosted |
| Best suited to | Heat-sensitive, small, regulated parts | Metals and hard plastics | Organics and coatings |
Comparison is a general guide. The right source depends on the exact substrate, and some parts need more than one wavelength across their process route.
Remote Head in Small Spaces
Fitting the Head Into a Tight Workstation
A UV marker is usually wanted in the places with the least room: inside a clean bench, beside a conveyor on a crowded line, or over a fixture that holds a part the size of a fingernail. Splitting the machine in two is how you win that space.
- Only the head enters the cellThe bulky source and electronics stay outside, so the working envelope is set by the head alone.
- No chiller plumbingAn air-cooled source removes the water lines that would otherwise cross a clean area.
- 35 kg total machineLight enough to move between benches, cells and departments on a wheeled stand.
- Compact 110 mm fieldThe standard field covers small parts and dense arrays without a large gantry.
Material Coverage
Substrates That Prefer UV
Where the cold process does what a thermal laser cannot.
A
Glass and Sapphire
Smooth, high-contrast frosted marks that stay elegant and durable without micro-cracking.
B
Plastics and PCB
ABS and polycarbonate housings, plus circuit boards and fine electronic parts, marked precisely and cleanly.
C
Anodized and Coated Metal
Fine, durable patterns on anodized aluminium and other coated metals, with no damage to the substrate.
D
Silicon and Ceramic
High-contrast wafer marking and permanent, crack-free marks on ceramic that preserve the material quality.
Technical Data
KR-SU3, KR-SU5 and KR-SU10
Three power levels at 355 nm on the same split chassis. Every figure below is taken from the machine datasheet.
| Parameter | KR-SU3 | KR-SU5 | KR-SU10 |
|---|---|---|---|
| Rated Output Power | 3W | 5W | 10W |
| Laser Source | JPT | ||
| Centre Wavelength | 355 nm | ||
| Frequency Range | 20–150 kHz | ||
| Marking Area | 110 × 110 mm | ||
| Beam Quality (M²) | ≤1.2 | ||
| Beam Diameter | 0.55 ± 0.15 mm | ||
| Supply Voltage | DC 12V | ||
| Galvanometer | RC7110 | ||
| Cooling Method | Air-cooled | ||
| Net Weight | 35 kg | ||
| Packing Dimensions | 780 × 690 × 490 mm | ||
The product introduction lists 3W and 5W options, while the technical parameter table also includes 10W, which is used above. One FAQ entry in the source refers to a water-cooled system; the parameter table specifies air cooling, which is used here. Confirm the final configuration on your order.
Key Numbers
UV Numbers That Matter
Four figures that shape what this UV platform can do.
355nmUV wavelength
0.55mmBeam diameter
≤1.2M²Beam quality
150kHzTop frequency
Applications
UV Marking Across Regulated Industries
Where traceability, cleanliness and a fine mark all have to hold at once.
Medical Technology
Ideal for instruments and devices that need non-invasive, high-precision marking that stands up to sterilisation.
Electronics and Packaging
Small components, chips and packaging materials marked directly, improving appeal and meeting labelling rules.
Automotive and Jewellery
Part tracking and aesthetic branding for automotive, and delicate patterns engraved on precious metals and gemstones.
FAQ
UV Laser Marking Questions
Every unit is carefully wrapped in custom foam or padding, then fixed inside a solid wooden case or a high-strength corrugated carton with shock-absorbing material. This packing is built to survive rough handling and a long journey.
Yes. Our UV laser marking machines are covered by a warranty against quality problems and manufacturing defects, giving you confidence in the investment. The applicable term is confirmed in writing on your order.
Yes. We provide instructional videos, a detailed user manual and remote support to guide you and your team through setup and operation, so you can use every function of the machine.
Ordering is simple. You can order through our website or contact our customer service team. We hold a full inventory of parts and accessories and can help with installation or arrange a technician if needed.
Yes. Our technical team will discuss your requirements and configure the machine for a seamless fit into your production line, improving productivity and efficiency.
The machines are versatile and mark a wide range of materials including metals such as gold, silver and copper, plus plastics, glass, ceramics and silicon wafers.
Related Models
Specialist Marking Alternatives
If UV is more precision than your job needs, these neighbouring builds may suit better.
All-in-One UV Laser Marker
The same cold UV process in a single self-contained body for quick deployment.
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Split MOPA Laser Marker
Tunable pulse width for colour and deep black on metals when heat is not the constraint.
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