40W~50W Sealed CO2 Laser Tube

click on thumbnail to zoom

Other products by : Lightobject
 Item# :   LSR-SPT45WCO2
31 units available
  MSRP :   $295.00
  Price :   $195.00
 Quantity :  


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


Average Rating:
(based on 11 reviews)

Showing 1 - 5 of 11 Reviews:

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.
by Jeff
on 12/13/2017
Just bought another one. Great laser tube!
Mt previous review for this tube was for my K40. I've since gotten a Chinese 50W machine that clearly doesn't have a 50W tube. I bought another one of these and I'm very happy with the results. With a rating of 45W, this tube is significantly more powerful than the stock tube claiming 50W. It produces more power even at much lower mA. I've set my max power to be 12mA and that seems to be the sweet spot. The Chinese machine needs an extension to house the extra length of the tube just like the K40 does, however, the extension doesn't need to be as long.
by Bill
on 11/13/2017
Replacement tube for blue and white China laser
I installed this tube in my "50" watt blue and white China laser about 2 weeks ago and it is working extremely well. I had already upgraded the power supply to a 40-60W unit and I had already made a 6" extension housing and tube supports. I am very pleased with the tube as it really brought this machine to life. The tube arrived quickly and was VERY well packed. Any future needs for my laser or CNC router will be from Lightobject!
Review and Rate this Item

Top Sellers