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Aftermarket protective window for Precitec welding, cladding and cutting heads. Replaces Precitec P0251-1419-00001, protective glass OG Y D50 d2 1064.
It is the process side window for the YW50 and YW52 welding heads, the YC52 cladding head and the YK52 cutting head. Welding and cladding throw a lot of spatter at this glass, so it is changed often.
D50 x 2 mm fused silica, anti reflection coated on both faces for 1064 nm. Sold in packs of 1, 5 or 10.
| Replaces | Precitec P0251-1419-00001 |
| Size | D50 x 2 mm, 1064 nm |
| Power Rating | The supplied window is rated to 30 kW. |
| Material | Fused silica, AR coated both faces |
| Wavelength | 1064 nm fiber lasers |
| Pack Options | 1 pack, 5 pack, 10 pack |
| Pack | Dimensions | Precitec Part No.(SPM Part No.) | Fits |
|---|---|---|---|
| D50 x 2 mm, 1064 nm | D50 x 2 mm, 1064 nm | P0251-1419-00001(SPM-LAS-2169) | YW50, YW52, YC52, YK52 |
Routine window changes
The protective window is the most frequently replaced optic in a cutting head. Change it at the first sign of spatter, pitting or a burn mark. A contaminated window absorbs laser power, heats up and can crack.
Protecting the focusing lens
The window sits between the focusing lens and the cut. Keeping it clean protects a lens that costs many times more and keeps the focal spot and cut width consistent.
Recovering lost cutting power
If piercing slows, the kerf widens or the machine needs more power for the same plate, inspect the window before changing parameters. A dirty window is the most common cause.
Stocking for every head in the shop
Single windows for an urgent change, 5 packs for a machine running one shift, 10 packs at the lowest price per piece for busy production lines.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| American Photonics | USD 43.00 | 6 Oct 2026 |
| Spare Part Mart | USD 16.33 | Today |
Our price of USD 16.33 is approximately 62% less than this seller.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Both are D50 x 2 mm windows for the same heads. Precitec lists them under separate numbers with different coatings. Order the number shown on your current window.
Check the part number on the old window's packaging or in your parts list, or measure the diameter and thickness of the window you are replacing. Both must match the size shown.
No. It is an aftermarket window made to the same size. The OEM part number is shown so you can match the window you are replacing.
It is the same window in each. The 10 pack has the lowest price per window and suits machines that change windows every shift.
Hold it by the edge with clean gloves and keep it in its case until fitting. Clean only with lens tissue and optical grade alcohol.
Yes. Shipping options and costs for your country are shown at checkout.
Prices depend on your ZIP or postcode.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
