40W~50W Sealed CO2 Laser Tube

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Other products by Lightobject
Item #: LSR-SPT45WCO2
Reg. Price: $295.00
Our Price: $195.00
31 units available


 1000mm (1M) laser tube with a maximum output of 50W  is a great candidate for industrial engraving and cutting leather, wood, and thin acrylic.


Note: This laser tube is not designed for the K40 machine which requires the 35W 700~720mm CO2 Sealed Laser Tube instead. It is shipped from the USA, while supplies last.



  • Power: Rated 40W~45W (50W peak)
  • Triggering Voltage: 20KV
  • Operating Voltage: 15KV
  • Current: 18mA max. Recommended 16mA
  • Length: 1000mm/ 39.4"
  • Diameter: 50mm/ 2"
  • Water Cooling required
  • Water temperature: 20~25'C(68-77F)
  • Warranty: 3 months 



Why buy Laser Tubes from LightObject?

1) We're located in USA (Sacramento, California). No U.S. Customs issues

2) We provide great tech support. We are knowledgeable, and we know what we're selling.  Check out our support forum at LightObject.info.  There you can ask us questions, tap into our vast customer network for support and visit our FAQ section as well!

3) Fast turn around time for tube replacement

4) Competitive pricing because we deal direct with the manufacturers

5) High quality and great packing


We test each tube with industry grade laser power meter before it is shipped.


 (Note: pictures are showing a test for a 60W laser tube)




Note: 600W water chiller (refrigerant) is highly recommened for cooling.  We recommend LightObject  LO-600 chiller


Shipping: Default shipping method is FedEX ground for all laser tube orders.  Please contact us for the price if faster service is needed.


Multiple Item Orders -  please add each item to the cart and then click on the "Shipping Estimator" to get the shipping cost.



Courtesy reminder: Any damage that happens during shipping, the buyer must report to us within 3 business days after receiving it. Failing to do so will result in rejection of all claims. Customers must file a report to the Carrier and keep all shipping materials handy for inspection. The buyer is responsible for the shipping cost of a replacement tube after 30 days of receiving the product.


Model C50
Description LO-45Watt CO2 Laser Tube
Power 45 Watt
Warranty 3 months (90 days)


Average Rating:
(based on 13 reviews)

Showing 1 - 5 of 13 Reviews:

by Mike
on 8/13/2018
2 years of heavy use ... still working
Our Makerspace installed this 45W tube in August 2016. After 2 years of daily use the tube is still working well with no perceived change in power.
by corky
on 6/1/2018
Buyer Beware
I ordered this to upgrade my laser from a 35w to 45w, the tube actually uses more power than a standard 45w and unless your powersupply is rated for higher than 45w I would recommend staying away. I had a lot of issues with trapped air on install as well but that is to be expected I suppose. Not my first laser was my first time ordering from LO and will definitely be my last. Reply(LO): First of all, this user know very little about a power supply and the laser tube. Most laser power supply rate 40W are capable to drive 50W without any issue. For a 45W laser tube, it only take 16mA while most 40W laser power supply can output as much as 20~22mA! Second, a higher output laser tube shouldn't be the reason that caused system halted. A laser tube doesn't draw more current because of higher output with the same current applied. It only means the tube is better and most people are happy to see higher output tube without paying an extra! We LightObject did that by providing better products without charging an extra! Anyway, system halted could be caused by poor grounding or bad connection on laser tube. Plus, controller card is easy to get interference without proper tube installation. He should be happy to get a higher output laser tube from us rather than complain. In fact, here is the fact: he used the tube over 3 months and then asked us to send him a new replacement. We declined it and then he asked for a big discount for a new purchase. We offered him $15 discount out of courtesy but he declined our offer. He threaded us for negative feedback. We suggested him to do more study before making 'nonsense' complain. We tried to educate him but he refused to take the true so we have no choice but to block him from making any purchase from us
by Matt
on 3/21/2018
Excellent tube
This is a replacement for what was supposed to be a 60 watt (really an overpowered 50 watt) tube. I've now made a couple dozen passes with this tube and the results are great. I will absolutely buy from lightobject again. Very impressed.
by Mike D
on 3/15/2018
First Impressions
I have not yet powered this up, but it is clearly a superior laser tube. While you can get cheaper 45watt lasers, you get what you pay for. It came with power wires connected which was a nice surprise. It was clearly tested because it did have some water droplets in it. It included the test sheet showing the output power for a given current. The tube was also packaged very very well, double boxed with a lot of packing. Anyone looking to buy a laser tube or anything else laser related can't go wrong with LightObject. I have purchased other items from them and I have been very happy with everything.
by Brendan
on 12/13/2017
Great replacement
I bought a second-hand FSL 5th Gen Hobby laser with a dying tube and needed a replacement (and an upgrade). This was cheaper than the 40W tube through FSL. Installation was pretty simple after popping out the FSL case's tub extension hole, and this thing's been rocking.
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