WSX Protective Lens – D30 x T5 mm
A laser protective lens (protective window) is a sacrificial consumable mounted in the cutting head. It shields the expensive focusing and collimating optics from spatter, smoke, dust and high-pressure assist gas, keeping beam quality and cut consistency stable while cutting the cost of head maintenance.
Lower window for WSX NC / KD series heads.
Key features
- High-purity fused silica substrate with double-sided AR coating for 1064 nm
- Transmittance above 99.5% and a coating damage threshold over 15 J/cm2
- Precision-ground diameter and thickness for a play-free fit in the drawer
- Low absorption to limit thermal focus shift at high power
- Individually packed and inspected; drop-in replacement for OEM part numbers
Specifications
| Brand | WSX |
| Product type | Protective lens |
| Size | D30 x T5 mm |
| Wavelength | 1064 nm (900-1100 nm) |
| Coating | Double-sided AR |
| Packing | 1 pc / individual pack |
Material: high-purity fused silica (quartz), double-sided AR coating
Wavelength: 1064 nm (900-1100 nm)
Transmittance: > 99.5%
Surface quality: 20/10 (scratch-dig)
Coating damage threshold: > 15 J/cm2
Shape: round / planar, bevelled edge
Compatibility
Designed for WSX laser cutting heads that use this exact window size. Lower window for WSX NC / KD series heads. If your head has been upgraded or you are unsure, cross-reference the OEM part number or send us a photo of the old part and we will confirm before you order.
Installation & maintenance
- Upper (collimation) window: protects the collimating lens, replaced with the drawer cartridge.
- Lower (focus / process) window: the first barrier against spatter, replaced most often.
- Inspect every shift; replace at once on pitting, burn marks, haze, cracks or a sudden drop in cut quality.
- Handle by the edge only, clean with lint-free swabs and ethanol, and never wipe dry debris across the surface.
Why buy from us
- Factory-direct laser consumables with batch inspection
- Stock of the sizes used most on fibre laser cutters, ready to ship
- Volume pricing and mixed cartons for OEMs and service partners
- Technical support to match the part to your cutting head
Not sure which size fits your head? Send us the head model, the OEM part number or a photo of the old part and we will confirm the correct item before you order.