Why lens cleaning is the most critical daily maintenance for a laser marking machine
Lens contamination absorbs laser energy directly, causing shallower marking depth, yellow lines and blurred edges. Zhongyi Laser (Dongguan) runs 48-hour aging on key models before shipment, but if the user does not clean for one month, focus lens transmittance may drop by 5%-10%. When fiber laser marking machines use Raycus, JPT or IPG lasers, once a lens burn spot forms it is irreversible and the lens must be replaced, so cleaning is cheaper than repair.
Lens cleaning steps for fiber, UV and CO2 laser marking machines
Step 1: power off and wait 5 minutes for the laser to fully discharge. Step 2: blow off surface dust with an air blower, not your mouth. Step 3: dampen a lint-free cloth with anhydrous ethanol and wipe gently from the lens center outward in one direction; use each cloth only once. Step 4: dry with a dry lint-free cloth in the same one-way motion. UV laser marking machine coatings are more delicate, so use lighter pressure; CO2 laser marking machine lenses are usually ZnSe or Ge, and acetone must not be used.
Consumable and spare part replacement cycles: protective lens, focus lens, field lens
The protective lens is the fastest-wearing spare part, recommended for replacement every 1-3 months; the focus lens can last 12-18 months with proper cleaning; the field lens usually lasts over 2 years, but must be replaced if marking distortion appears. Zhongyi Laser (Dongguan) has shipped 5000 units cumulatively and stocks common spare parts. Sample service: 24-hour marking video and return shipment. When ordering spare parts, provide the model and lens focal length to avoid wrong installation.
Safe operation: 3 things you must do when cleaning a laser marking machine
First, power off and attach a lockout tag to prevent others from switching it on. Second, wear safety goggles; even after power off, residual capacitors may cause the laser to emit briefly. Third, wait until ethanol fully evaporates before restarting, otherwise residue leaves water marks and burns the lens. Zhongyi Laser offers an 18-month whole-machine warranty, but man-made lens burns are not covered, and proper operation avoids them.
Common troubleshooting: shallow marking, black spots, unstable power
If marking becomes shallow, first check lens contamination, then check whether focus has shifted by more than 0.5 mm. Black spots usually mean a lens burn spot or dust inside the field lens. For unstable power, check the Raycus, JPT or IPG laser power supply and cooling water temperature; fiber laser marking machines are best kept at 25±2°C. If cleaning does not help, contact Zhongyi Laser engineers; a team of 3+ engineers can diagnose remotely.
Procurement Q&A
Price depends on the model (UV / fiber / CO₂), power, laser-source brand (Raycus / JPT / IPG) and configuration (galvo, field lens, control software). Zhongyi Laser lists the exact laser-source and galvo models on the quote and in the contract, so the configuration is verifiable and easy to reorder or replace later.
Standard machines ship in 7 days; rush orders in 3–5 days; custom non-standard builds in 15–30 days. Before production we confirm drawings, process and sample results to avoid rework.
18-month warranty on the machine. Core parts like the laser source and galvo are replaceable standard parts with long-term supply, so repairs and swaps are documented.
Yes. Send a sample and we return a real test video within 24 hours and ship the part back. Key models get a 48-hour aging test, so you see the actual result on your own workpiece before deciding.
Open Mo–Su 08:00–23:00 (GMT+8) with English support. Reach us at +86 159 9995 5734, WhatsApp +86 190 9874 6815 or Laurie@laserdg.com. Machines are packed to export standards.
We have 3+ engineers, 7+ authorised patents and 5000+ units shipped. Standard parts like laser source and galvo are stocked long-term for predictable replenishment.
A basic cleaning kit (air blower, lint-free cloth, anhydrous ethanol) usually costs tens of RMB; original protective lenses range from several hundred to over one thousand RMB depending on the model. Zhongyi Laser (Dongguan) can quote spare parts based on model and quantity.
Zhongyi Laser standard lead time is 7 days, expedited 3-5 days, and custom 15-30 days. Common protective lenses and focus lenses are usually in stock and can ship faster.
The whole machine has an 18-month warranty. Lens burn spots caused by improper operation are not covered, but paid replacement service is available.
Yes. Zhongyi Laser offers sample service: a marking video within 24 hours and the sample shipped back, helping confirm marking results after cleaning or lens replacement.
Zhongyi Laser (Dongguan) serves overseas customers with remote video guidance for lens cleaning and troubleshooting. Support covers Raycus, JPT and IPG lasers, and CE(LVD+MD) models can be used to meet local safety requirements.