40W~50W Sealed CO2 Laser Tube

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Other products by : Lightobject
 Item# :   LSR-SPT45WCO2
17 units available
  MSRP :   $265.00
  Price :   $215.00
 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
  • Life Span: 1500~1800 hrs
  • 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 5 months (150 days)


Average Rating:
(based on 6 reviews)

Showing 1 - 5 of 6 Reviews:

by Jeff
on 4/13/2017
Great tube for modified K40
This tube has the correct diameter and power requirements to be used with a Chinese K40 laser cutter. I cut a hole in the side of the case, extended the water tube and high voltage wire and added a box on the side to protect it. I'm seeing a dramatic increase in power, about twice the power of the original stock tube when it was new. Obviously the specs of the original K40 tube were a lie. I am very pleased with this tube!
by Anthony
on 11/29/2016
First impressions.
I just put this tube into my "50 W Chinese Laser" to replace the supposed, not really 40W tube, that came with my unit. This thing is awesome. I upgraded my power supply a short time back with the 40-60W supply from Light Objects (as after 2 weeks of owning the machine it died. And with this tube, I am using way less power and running much faster compared to my old tube. Also I am finding my cooling water maintains it temperature much better, which my old tube warmed up my cooling water much faster. I looks like my running time will increase with less time for the down time for the system to cool down. I highly recommend this tube.
by rogue
on 10/19/2016
Great product
I have used this tube in my machine for 12+ months running 5 days a week. Never have had a issue, still running strong. Just purchased a second tube for a new machine I am building. Lightobject has been great to work with.
by Richard
on 7/9/2015
This is what a 50w machine should be equipped with
Perfect replacement tube for ebay 50w CO2 laser. It's what they should have put in the machine in the first place. Can't say enough good things about Marco and his expertise. My 502 laser is working better than ever using this tube.
by Ian
on 5/17/2015
Upgrade for my Shenhui SH G350 eBay Laser
Purchased one of these 45 Watt tubes and a suitable power supply to replace the spent tube in my 12 month old Shenhui machine. This tube is a bit longer than the 850mm original, but I knew it would fit once I'd removed the hatch in the case for this 1000mm tube. There is no way the original tube was 50 Watt. This Lightobject tube is so good compared to the old one - even when new, the old tube wasn't this powerful! It arrived in the UK within three days but customs caught the tube and the Power Supply package, so I had to pay two lots of UK customs charges - £80.00 (or $126.00)! Both items were very well packaged, and both are working beyond expectations. Many thanks for getting me laser cutting again!
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