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SPT 45W CO2 Sealed Laser Tube (1M)

Retail Price: $225.00
Price: $195.00
48 units available
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SPT C50,  1000mm (1M) laser tube with a maximum output of 50W  is a great candidate for industrial engraving and cutting leather, wood, and thin acrylic.

CE, FDA certified. video

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: 6 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  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 recommended 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 on the shipment; the buyer must report to us within 3 business days after receiving it. If failed to do so; this will result in the rejection of all claims. Customers must file a report to the carrier and keep all shipping materials handy for inspection. We're not responsible for any internal cracked after receiving, any damage caused during transportation covered by insurance.  The buyer is responsible for the shipping cost of a replacement tube if the order date is out of 30 days. Warranty acceptance or denial is subjected to the decision made by the tube manufacturers. Lightobject is not responsible for a denial under any circumstance.
Average rating 9 out of 10 ( based on 17 reviews )

SPT 45W CO2 Sealed Laser Tube

Review by Richard on 10/6/2020

Replaced my so called 45W Full Spectrum Laser tube with this one and it doubled my output. My laser has never cut wood this clean. Had to add a 12 inch extension to the side of the cabinet to fit this new tube which tells me I did not have a 40w laser. If you do this mod order 8X12 Silicone Flex Tube and a 30 mA meter. Runs great and time will tell how long it will last. Highly recommend this tube.

I've wasted so much time in my life...

Review by Matthew on 9/18/2019

I've bought a few 35w tubes from Marco over the years for my Full Spectrum Pro 20x12 and Hobby 5th Gen and they have all been great. I decided to try to fit this tube into my Pro laser, and I'm blown away. My jobs used to have to run at 1000 dpi, half speed to get the depth I was needing. Put this one in, first job was at 500dpi, 80% speed and it's way too deep! I'm going to be saving probably an hour on my big jobs, which I run up to 10 hours a day. Chances are I'll be able to double my production with this thing. Wish I didn't wait years on this...

3 years and still working well

Review by Mike on 9/4/2019

UPDATE: We've been running this tube in our Makerspace laser cutter for 3 years now. It gets heavy use and is still going strong. Highly recommende. We will definitely buy this tube again.

45w laser tube

Review by Tim on 12/12/2018

this tube is replacing a supposedly 40w tube (more like 25-30). this new tube performs much better than my old tube. Light Object has always been great to work with. had the new tube installed and running in about an hour.

Co-owner Devine Lasting Impressions

Review by Cristopher farrell on 12/5/2018

This is the second time in 2 years that Light Object has rescued me. This time it was my tube that failed. My "Factory" 50 watt was actually a 40 watt being "Pushed" to higher output, therefore it failed early. These guys got me an "Honest" 45 watt tube that actually tested out to 57 watts!!! Running it at 16ma or less, this tube is giving me incredible performance at lower wattages and higher speeds. I'm able to cut thicker materials at 35 - 40% power, that I couldn't even cut before at 100%. Their friendly and helpful staff have once again got my business up and going in record time. I will be a customer for life.

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