SPT C70 70W CO2 Sealed Laser Tube

(You save $65.00 )
Bulk Pricing:

Below are the available bulk discount rates for each individual item when you purchase a certain amount

  • Buy 2 - 3 and get 5% off
  • Buy 4 - 7 and get 7.5% off
  • Buy 8 - 24 and get 10% off
  • Buy 25 or above and get 15% off
(6 reviews)
60.00 (in)
9.00 (in)
16.00 (in)
Current Stock:
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**Free Shipping for Continental US Only**

"SPT" is one of the most popular brands in the industry.

The C collection CO2 laser tubes have high optical quality, strong cutting force, and high stability.  It also provides stable laser sources for high-demand laser machinery manufacturers.

Why SPT Laser?

Click to know about SPT

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 directly with the manufacturers

5) High quality and professional packing

6) We test each tube with industry grade laser power meter before it is shipped from California


  • Power: 70W, peak: 78W
  • Triggering Voltage: 17-19KV
  • Operating Voltage: 15-16KV
  • Recommended Working Current: 15~18mA, max 20mA, peak: 22mA
  • Length: 1250mm (49") +/-10mm
  • Diameter: 55mm(2.16") +/-1mm
  • Water Cooling: chiller is required 
  • Water temperature: 15~25'C (59~77'F)
  • Warranty: 12 months  

Note: 600W or higher power with compressor (refrigerant) is required for cooling or warranty is void. Proof of owning a chiller is required. 


Default shipping method is UPS ground.  Please contact us for the price if faster service is needed.

Note: Shipping Rate provided by our system is applied to the continental 48 contiguous states in the USA. Hawaii, Alaska and rest of the world will be subjected to different shipping rate. Contact us to get a shipping rate before placing your order. 

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.


  • 5
    60w Laser Tube Review

    Posted by Amos Devonish on Nov 25th 2022

    Excellent product

  • 5
    SPT C70 60W CO2 Sealed Laser Tube

    Posted by John on Mar 11th 2022

    quick shipping. Packaged nicely, no damage. Install instructions would be helpful for us newbies Reply: Thank you for the feedback. You may check our youtube video for installation.

  • 5
    Perfect tube and customer service

    Posted by Kevin on Feb 11th 2021

    I have been using 2 of the lightobject 45 watt tubes for over 12 months without issue engraving daily. I picked this tube up to increase cutting speed and it has worked perfectly. I was able to pickup in person at LightObject where they tested and confirmed the power rating prior to me leaving. I cant say enough about how awesome the customer service is. I am planning to purchase a 3rd laser from LightObject this year. 10/23/2018

  • 5
    I Got The Power!

    Posted by Willie on Feb 11th 2021

    I purchased this in conjunction with a 60W power supply hoping to bring my struggling stock K40 laser some power, as having to try to cut 1/4" MDF and Birch was a definite struggle. Well, let's just say at 60% power, I can cut all I need to now! This tube does the job at less than 50% power than the stock K40 tube did being overdriven. It sticks out quite a bit from the stock K40 housing, but I made an extension to add to the extension from Light Objects. If you're looking to upgrade, you have to get this tube! I have about 8 hours of usage on it but have had zero problems so far!10/11/2018

  • 5
    Upgrade from 50w to 60w

    Posted by Bill N on Feb 11th 2021

    I blew out the power supply on my 50w laser and decided to take the opportunity to upgrade to a 60w tube. I purchased this tube along with a 40W~60W PWM CO2 Laser Power Supply (AC110V) . To reduce downtime, I elected to pick up these items personally. The people at Light Object were very friendly and took the time to tour me through their facility. The installation was relatively simple and I was up and running very quickly. Although I purchased these items at the beginning of Dec. 2017, I elected to withhold my review until I had some time with it and as of now I am very pleased with my purchase. I work primarily with wood and can now cut through wood that I previously was not able to. I should have upgraded sooner. This morning I measured the output, using my Comet 1k laser power sensor, I am measuring 67.5W at the table surface. Will definitely buy from Light Object again when the need arises.1/14/2018

  • 5
    Excellent quality and performance

    Posted by James Barber on Feb 11th 2021

    I bought this tube to replace one that failed due to an internal short. (different manufacturer and vendor) I only have a few hours on it, but so far it's performing much better than the old tube. After aligning the tube and mirrors and re-tuning my jobs, I'm cutting 3mm cast acrylic sheet at 10mm/second with 55% power. (13mA) The cut edge is nice and clean. There is an obvious difference in build quality between the new SPT tube and the "old" tube. Again, I only have a few hours on the tube, but so far, so good! LightObject tested the tube and measured the output power before shipping, which is a valuable service as well. Highly recommended. 9/28/2017