No Products in the Cart
Aftermarket upper protective window for Raytools high power cutting heads. Replaces Raytools 211LCG0086, the 15 kW version of the D24.9 x 1.5 mm upper window.
The upper window sits between the collimating optics and the fiber connector side of the head, so it stays far cleaner than the lower window. When it does get marked, usually from contamination during a fiber or lens change, it scatters power before the beam reaches the focusing lens.
It fits the BS08K, BD08K, BM115 and BS12K heads that use the 15 kW upper window. The standard 211LCG0020 is the same size but is only rated to 4 kW, so do not swap the two on a high power head. Sold in packs of 1, 5 or 10.
| Replaces | Raytools 211LCG0086 |
| Size | D24.9 x 1.5 mm, 15 kW |
| Power Rating | Up to 15 kW (Raytools 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 | Raytools Part No.(SPM Part No.) | Fits |
|---|---|---|---|
| D24.9 x 1.5 mm, 15 kW | D24.9 x 1.5 mm, 15 kW | 211LCG0086(SPM-LAS-2159) | BS08K, BD08K, BM115, BS12K |
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.
Found this part cheaper elsewhere? Send us the listing and we will beat it under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes. It is the same D24.9 x 1.5 mm size with a higher power rating, so it can replace the standard window. The standard window should not be used in a 15 kW head.
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.
