Home > Consumables > Protective Window > for Laser Welding Head
Product Name: Protective Window/Lens
Dimension: D18mm D20mm T2.0mm/3.0mm/4.0mm
Coating: AR/AR 1064nm
Material: Fused Silica
Application: WSX/Suplaser/Hanwei/Au3tech/Qilin Laser Welding Head
Description |
Used for |
Fused Silica PW D18.00 T2.0 AR/AR@1064nm |
WSX/Chaoqiang/Hanwei/Au3tech/Qilin welding head |
Fused Silica PW D20.00 T2.0 AR/AR@1064nm |
WSX/Chaoqiang/Hanwei/Au3tech/Qilin welding head |
Fused Silica PW D20.0 T3.0 AR/AR@1064nm |
WSX/Chaoqiang/Hanwei/Au3tech/Qilin welding head |
Fused Silica PW D20.00 T4.0 AR/AR@1064nm |
WSX/Chaoqiang/Hanwei/Au3tech/Qilin welding head |
| Size | Typical use |
|---|---|
| 18×2 mm | Compact handheld heads, 1–1.5 kW class |
| 20×2 mm | Q-head (dual wobble), most common, 1.5–2 kW class |
| 20×3 / 20×4 mm | Standard heads — thicker, longer service life |
| 30×5 mm | High-power / large-aperture heads, 3 kW and above |
Confirm the size from your old lens or the lens seat inner diameter, and select the grade matching your machine's power output.
Q: How do I know which size my torch needs?
A: Check the old lens — the size is marked as diameter × thickness (e.g., 20×2). Or measure the inner diameter of the lens seat with a caliper.
Q: Can it be used on different torch brands?
A: Yes. Lenses of the same size can be used across torch brands within the same power range; for different power levels, choose the corresponding power-rated grade.
Q: How often should it be replaced?
A: It depends on material and gas protection — every few hours in heavy aluminum/galvanized welding, days or longer in clean conditions. Replace at the first sign of burn marks.
Q: Do you offer OEM / wholesale?
A: Yes. OEM/ODM and bulk supply are available — contact us for pricing and lead time.
Contact us for MOQ, pricing and shipping. We also supply matching focusing lenses and complete torch spare parts — one-stop for your welding consumables.
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