I have a 50w fiber laser with a 110mm lens. I bought a 300mm f-theta lens that I thought would work. It didn’t. The threads on the 110 are at the rear of the lens and the 300 threads are near the front. I have looked at lenses online but they all seem to be like the 300 with the front threads.
What type is mine? I checked with the mfg (Chinese) but have yet to hear back. The docs just say 110.
There is an extension on the galvo the lens screws into… in the right hand drawing, the red line is where my lens screws into the machine. The part above (green line) it also unscrews.
It might be nice if you posted a link to your machine, since we are clueless …
My bad. It’s a Max 50W fiber laser with a 110 lens. MAX 50W Fiber Laser Metal Mark Engraver Machine Ezcad 2 JCZ FDA | eBay
Looking at your drawing, my lens screws/unscrews from the skinny end or top on the drawing, not where your red arrow is pointing.
1 Like
Is there any chance that you’ve unscrewed the lens mount/holder/sleeve thing that the lens screws into instead of just unscrewing the lens itself? That ring with “CZOPTC-1064-160-110” markings looks like the front ring of my lenses, which have threads right above that ring. They screw into a roughly cylindrical black “lens holder”, that itself screws into the bottom of the galvo head.
See, for example, the black part of this galvo head assembly. The black part is the lens mount, but at least on mine when it was new, I had it unscrew once at the holder, not the lens.
Well, let me go look. Hope I’m not that stupid.
Damn, I guess I am that stupid. Took some effort to get them apart, but apart they came.
Thank you.
Welcome to the forum…
Glad you solved it… I was suspicious that may have been the case.
LOL I was cursing myself for “buying the wrong lens” for like 2 hrs until I noticed that seam. Like you, I was unscrewing the wrong part, taking the spacer and the lens off instead of just the lens.
Same as you, the lens was tightened much harder into the spacer. The spacer with the lens separated easily from the head. Getting the spacer separated from the lens took a bit of effort.
Yes, indeed.