Cloudray 40W Laser Tube 720mm Dia.50mm, CO2 Laser Engraver Tube 45W, Cable Preconnected with Coating,40 Watt CO2 Tube With Metal Head (CR35 35-45W)
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Availability:
Only 1 left in stock, order soon!
Arrives
Jun 7 – Jun 11
Size: 35-45W 720mm
Features
- Powerful Laser Tube: CR35 40w laser tube (max 45W), Length 720mm Outer Dia.50mm.Before ordering, pls confirm the Diameter and Length of the co2 tube,great replacement for the same power or same length 40w co2 laser tube (Pls make sure your machine has enough installation space, all spaces should be slightly larger than laser tube's size).
- After Sales: We are committed to providing superior service to our customers. If any issues arise within 4 months of receiving the laser tube (excluding man-made damage), please provide us with the laser tube serial number and proof of the problem via photo or video. Upon verification, we will promptly send you a new cloudray tube.
- Quality Assurance: Cloudray CO2 laser tube are coated with nano gold catalyst ,the output laser is the TEM00 mode, which has high quality beam spot concentration, high energy density as well as good and stable spot, making laser machine with better performance.Apply unique glass metal sealing technology, and ensure a longer service life of the CO2 laser tube.
Features
- Universal Model:Power:40W Length:720mm Outer Diameter:50mm.Before ordering, please confirm the Diameter and Length of the laser tube,great replacement for the same power or same legth laser tube (Please make sure your machine has enough installation space, all spaces should be slightly larger than laser tube's size).
- Quality Assurance:Cloudray CO2 laser tuber are coated with nano gold catalyst ,the output laser is the TEM00 mode, which has high quality beam spot concentration, high energy density as well as good and stable spot, making laser machine with better performance.Apply unique glass metal sealing technology, and ensure a longer service life of the CO2 laser tube.
- Attention:Each tube is tested before shipping and we will provide a safe packaging.CO2 Laser tube is consumable, a long-time storage may lead to power attenuation. Thus, we recommend to buy it when you need to use.
Brand: Cloudray
Material: Glass
Style: Laser
Item Weight: 5600 Grams
Operation Mode: Automatic
Package Dimensions: 57 x 10.75 x 10.7 inches
Item model number: 35-45W 720mm
Is Discontinued By Manufacturer: No
Item Weight: 12.35 pounds
Manufacturer: Cloudray
Date First Available: August 7, 2018
Brand: Cloudray
Material: Glass
Color: Cr35
Product Dimensions: 28.35"L x 1.97"W
Style: CR35
Brand Name: Cloudray
UPC: 669819722123
Manufacturer: Cloudray
Model Number: CR35
Manufacturer Part Number: LT07MCR35
Unit Count: 1.0 Count
Color: Cr35
Style Name: CR35
Item Dimensions L x W: 28.35"L x 1.97"W
Level Measurement Units: millimeter
Operation Mode: Automatic
Level Measurement Type: laser
Material Type: Glass
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jun 7 – Jun 11
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 35-45W 720mm
For about $20 more than the basic tube, I decided to go with this one over the ten-high tube which is very similar to what the machine came with. I chose the CloudRay tube because firstly, it has a metal head. After about 3 years of light use on my old tube, the head had cracked right at the end and the laser lost most of its power. Secondly, I purchased some mirror mounts from them a while back and found them to be excellent quality. So far, I think I made the right choice. When I first hooked up the tube I couldn't get it to fire. I was very particular about cable routing,used marine heat shrink connectors properly crimped, etc. I also replaced all of my cooling lines with slightly larger 7mm ID silicone for a little more flow. I knew had connected everything properly so I was pretty baffled. Thankfully I found that there is a test fire button directly on the power supply and pressing it fired the tube. Turns out my water pump had fallen over in the bucket and pinched the tube. Water was flowing and I could see it going through the tube, but it was just too slow to activate the flow switch. Well at least I know that works! After a rough alignment the tube produced some really great results-- better than ever actually. On the previous tube, to cut 1/8" birch ply, I would run the machine at 25% power and 8mm/s. With the new CloudRay tube, I'm getting really clean cuts at 20% power and 12mm/s. While installing the tube, I also went ahead and added an ammeter to the machine. 20% power equates to exactly 9mw on this tube. Well within specs. I'm curious to see what I can do if I push it up to maybe 12-15mw. Keep in mind that my machine is pretty tuned if your numbers aren't in that ballpark. I've added full drag-chain air assist, better gold mirrors and holders, adjustable depth cutting head with a much bigger and higher quality focus lens, full honeycomb bed, corner bracket that aligns the workpiece to home, etc etc etc. If like me you're curious about the red connector that comes with the tube, the whole connector actually just slides off. It is just a large two piece connector meant to cover the splice in the high voltage wire. I used a red marine heat shrink butt connector to splice the high voltage wire which perfectly slid down into the connector CloudRay provided and is very very safe and secure that way. I have only 1 complaint about the tube but it is very minor. I wish they would've provided a longer ground lead. The attached lead is not long enough to make it back into the electronics area, so there is a splice connector visible in the tube compartment. No big deal. Pick this one. Definitely seems like a nice upgrade for ~$20 more. If it fails early or starts misbehaving I'll be back to update my review, but for now I'm quite pleased with my purchase.
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Reviewed in the United States on April 13, 2021 by Leon
Size: 35-45W 720mm
I bought this to replace my dead K40 tube and it's more powerful than the K40 ever was. I was cutting through 3mm wood at 20%, I used to have to run at 80% to do that in the past. The quality is excellent and I would definitely recommend this even if your old K40 isn't dead. It's well packaged, the wiring is simple to figure out and water cooled end is well attached and works well too.
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Reviewed in the United States on April 15, 2024 by Rob
Size: 35-45W 720mm
I hooked up the new tube and ran some test cuts. It ran great. Then I had a job a little over a month later and it is barely etching at 90%. Vendor will not support their product because they say you have to buy from them and not Amazon.
Reviewed in the United States on November 21, 2023 by David Cirak
Size: 35-45W 720mm
I purchased a new Full Spectrum Laser Muse Core back in April '22 and paid for their upgraded 45W tube from the standard 40W for hobby use. Within 5 months, and less than 3 hours of actual laser use time (I have an ESP32 that counts the seconds the air assist is turned on to Home Assistant) the FSL tube died. I decided to give this a try and so far I am extremely happy that I did, although angry I paid extra for a piece of garbage FSL tube to begin with. I haven't even used this for 15 minutes yet, mostly all alignment and some test cuts for determining settings. This was almost a drop in replacement for the Muse tube. It does not have the same connector as the Muse, the red cover that they show in the picture is just a cover, not a plug for those that may be wondering. I did purchase a HV plug on Amazon along with the tube so that I wouldn't have to modify the HV line from the Muse power supply just in case it dies while under warranty. I did have to swap out the negative side though, but that was easy. The settings for the original "45W" FSL tube for cutting 1/8" clear acrylic was 30% speed, 100% power, 100% current. It would normally cut through, but if I had masking on both sides there would sometimes be a few fibers hanging on. I always felt that it was slower than the Glowforge Plus that I replaced with the Muse (GF power supply died after a little more than a year) even though the Muse was supposed to be higher power. With this Cloudray tube I can certainly say it feels at least as fast as the Glowforge since I can now cleanly cut the same 1/8" acrylic at 60% speed rather than 30% speed. Without masking on either side it was even fairly reliable at 70% speed. Now, it's impossible to say how long it will last, but they do at least give a brief warranty, which is more than I can say for FSL and their tubes. This looks like it is much better quality, and will hopefully last me for years. I didn't break out the calipers to measure the tube, it was supposed to be 50mm diameter. It does seem like the laser is a little further from the wall of the case so not as well centered on the first mirror as the original. I was still able to get it aligned though and am so far very happy with it. Otherwise I would have probably purchased aftermarket clamps to line it up better.
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Reviewed in the United States on September 14, 2022 by Jeepin
Size: 35-45W 720mm
There are a few things you should take into consideration when you purchase this tube. 1) Make sure you keep the foam ends for the "hot end". Do NOT install your tube without having something shielding the "hot end" from the metal base, as this tube is a tad longer than the factory K40 40 watt tube. 2) Do NOT replace the ceramic square cap on the "Hot" wire with a typical Romex wire cap, wire splice cap, wire splice box...etc..(Red wire on K40) and be sure to put the ceramic square cap back over the two newly spliced wires. If not, you will have arcing and shorting out. 3) The tube will have issues with the factory retaining/hold down plastic rings as it is a little bigger in circumference. Meaning, do not go crazy tightening it down! The one side of the retainers obviously have a stop point but not the other side, so you can hypothetically crush and break this tube if you are not paying attention. 4) This tube must be water cooled better than the previous iteration. She runs hot, cuts like a torch and is simply one major upgrade that will turn your machine into an animal, so make sure you cool it better than using the included aquarium pump and floppy hose system. I did an entire upgrade with stiff line, flow meter, water pump and water pump coolant (which is pretty expensive but it makes such a HUGE difference) and run your K40 at 35, using Lightburn settings at 100% for cut. I slice through clear acrylic now like it is butter. I have done other major upgrades to the machine using my own air assist system, honeycomb bed...etc...but regardless, this tube makes your K40 into an absolute beast as long as you respect its requirements and don't cheap out or make stupid rookie mistakes with its install and maintenance.
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Reviewed in the United States on June 1, 2023 by mike beck
Size: 35-45W 720mm
I bought this to replace my Muse 3D 45 watt tube. It fit perfectly with a few modifications. I had a friend who cut the two connectors off and soldered and put shrink heat wrap to protect the connections back of the new tube. It worked perfectly!! When I did the alignment test, it was perfect. It cuts like it is brand new again. (I guess it is...).
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Reviewed in the United States on November 8, 2025 by Teresa
Size: 35-45W 720mm
Seemed to work well at first, but very shortly after installing began having printing issues. During my diagnostics, I noticed arcing near the water outlet tube. I sent a message to the seller and will update if there is any resolution, but at this point, $170 for a tube that fails so early in use is not good.
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Reviewed in the United States on December 13, 2025 Reviewed in the United States on December 13, 2025 by RC
Size: 35-45W 720mm
It was definitely a little too long for my Monport K 40, but it fit perfectly fine if you know how to access the other panel and make them work. Came in amazing packaging within the timeframe that I need it not broken. They did a great job at packing it. If it did come broken it was on the courier not the company. It is great and is definitely worth the money. The insulation was pretty straightforward after where I had to do a couple of calibrations, but it was great.
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Reviewed in the United States on November 12, 2025 by Kirk Escobar