Glass CO2 laser tube for a laser engraver and cutter

Which Laser Tube Does My OMTech Take? A UK Buyer's Guide

Measure the tube in your machine before you order: length and outside diameter, because sizes vary even within one model. Our older OMTech takes 1250 × 80mm and our Turbo-758 has a 1250 × 60mm YL H2, even though OMTech's current Turbo-758 listing quotes 1250 × 80mm. If omtech.uk shows out of stock, phone OMTech UK.

You need a new laser tube. The OMTech website says out of stock, Amazon has nothing, eBay draws a blank, and your machine is sitting cold while orders pile up. We've been there. This guide is what we wish had existed when we were searching.

Step one: find out what tube your machine actually takes

With the machine switched off, open the lid and measure the glass tube: its length and its outside diameter. Write both numbers down before you do anything else.

Don't rely on the product page, the spec sheet or even our post: tube sizes have changed between production runs of the same machine. Our Turbo-758 is a good example: bought in June 2024 (sold to us as 80W, now listed by OMTech as 90W), it has a 1250mm × 60mm YL H2, yet OMTech's current Turbo-758 listing quotes 1250 × 80mm. Our older OMTech (bought January 2023, a different generation, also sold as 80W) takes a 1250mm × 80mm tube. If we'd ordered from the spec sheet we'd have the wrong tube. Measure first, every time.

What tube brands are worth buying?

In our view, the CO2 laser tube market has a clear quality ladder:

Reci is, in our view, the benchmark that serious laser users refer back to: well built, consistent beam quality, and widely available. The W2 is sold for 80–90W machines; its spec is 90W rated (100W peak) and about 1200–1230mm × 80mm, so check it against your own measurements. If you're running a machine commercially and want the least risk, Reci is the name to reach for. It is also at the pricier end, which brings us to the next options.

Cloudray is currently our best-value choice for the 80mm tube. They stock Reci tubes as well as their own branded tubes, have a UK warehouse with free UK shipping (their site lists 5–7 processing days), and the quality has been solid in our experience. Worth checking their site and Amazon listing before anywhere else.

MCWlaser is one we've bought and can personally recommend. Their 80W CO2 glass laser tube (1250mm × 80mm) on Amazon UK arrived well packaged, was good quality and came with a metal head and pre-connected cables, which makes fitting straightforward. A solid choice when you want fast Amazon delivery and a brand you can trust.

Yongli (YL): our newer machine came with a YL H2, and OMTech sells YL-branded replacement tubes as well as its own. It's a decent mid-market tube and perfectly usable as a replacement if you want to match what came out. More on sourcing it below.

Ten High is budget-end. We've used it on the older machine in a pinch. It works, but if you're running commercial production we'd spend a little more on Cloudray, MCWlaser or Reci.

Avoid unbranded tubes with no manufacturer listed. Quality varies widely, so buy from established sellers: a dud tube costs you the downtime of fitting it as well as the price.

Where to buy, in order of preference

1. Phone OMTech UK directly first
We cannot stress this enough. When our Turbo's first tube, a 1250 × 60mm Yongli H2, needed replacing after about two years, the OMTech website showed out of stock. So did Amazon and eBay. We eventually found the same tube on AliExpress, paid £198 with a three-week lead time and placed a reluctant order. Then, as a last resort, we rang OMTech customer service, and they were brilliant. The UK warehouse called us back and confirmed stock, and the tube arrived two days later; we paid £260. More expensive than AliExpress, but here almost immediately, and the correct tube confirmed by the manufacturer.

For reference, in October 2026 omtech.uk listed its 80W and 90W replacement tubes at about £250–£260, all out of stock when we checked, so ring them. Check the current price.

  • OMTech UK phone: +44 7456 791497
  • OMTech UK email: support@omtechlaser.uk
  • OMTech tubes page: omtech.uk/collections/laser-tubes (often shows out of stock online; phone anyway)

Contact details checked October 2026.

2. Amazon UK
For the 1250 × 80mm tube, Amazon is a strong option. The MCWlaser 80W tube is one we've used and can recommend: fast delivery, well packaged, good quality. Cloudray also sell through Amazon. Always confirm the exact dimensions before ordering.

3. Cloudray UK warehouse
UK stock with free UK shipping, a good range of sizes, and competitive prices. For the common 1250 × 80mm tube this is currently our first stop when OMTech is out.

4. eBay UK
More variable in quality. Stick to established sellers with strong feedback and always confirm dimensions.

5. AliExpress: last resort, but it works
We paid £198 for our 1250 × 60mm Yongli H2 tube on AliExpress while also trying to source it through OMTech UK. The OMTech tube arrived first (two days; we paid £260), and the AliExpress tube arrived about three weeks later. We're pleased to report it was exactly as described: a genuine Yongli H2, well packed in a double-boxed carton with dense foam blocks along the full length of the tube, and undamaged. So AliExpress is a legitimate last resort for the harder-to-source tube sizes, just not a fast one. Budget three weeks minimum and don't rely on it when your machine is already down.

How to know your tube is dying

Tubes usually fade rather than fail overnight. The pattern is gradual:

  • Cuts that used to go through cleanly in one pass start needing two.
  • You find yourself increasing power or reducing speed to compensate, and it works for a few days.
  • Then the same problem returns at the new settings.
  • If this cycle keeps repeating, the tube is going. Order the replacement now, before it stops working entirely.

OMTech's troubleshooting guidance adds two clearer signs: a tube that glows white when it fires, or a split beam spot, means it needs replacing. Don't open covers near the tube or power supply to look while the machine is powered. A tube can also fail suddenly if it cracks or leaks.

A failing power supply can look similar, so check before you buy a tube. With the lid and covers closed, press PULSE on the machine's control panel at about 25–45% power and watch the mA meter. Current rising with no beam points to the tube; current stuck at zero or not changing with the power setting points to the power supply. Our laser power supply guide covers the full diagnosis and replacement process.

Fitting it yourself

Check your warranty first. OMTech UK's warranty page (checked October 2026) gives one year on tubes and power supplies for 70W-and-above machines bought direct from OMTech UK, though the Turbo-758 product page still says six months, so check your terms. OMTech UK's warranty terms (checked October 2026) exclude faults caused by not using an OMTech-supplied water pump or chiller, and alterations or servicing by anyone OMTech hasn't authorised. If your machine is still under warranty, check with OMTech before swapping the chiller, pump or other parts, including the tube: one that fails inside the warranty may be replaced for free.

On the older-generation machines with a perspex lid, a tube swap involves a little wiring and some soldering, which is straightforward if you've used a soldering iron before. On our Turbo-series machine the connections are plug-in, so no soldering is needed at all. OMTech's YouTube channel has the tutorials and they're genuinely good.

Safety first: the laser power supply works at up to around 40 kV and its capacitors can hold a charge after the machine is switched off. Switch off, unplug and isolate the machine, treat the high-voltage lead and tube terminals as live, and follow OMTech's guide to the letter. The tube is fragile glass full of coolant, so drain it and handle it with care. If you're not confident, get a competent person to do it.

Prevention: the habits that extend tube life

Tubes die faster when they run hot and dirty. Keep your chiller topped up with distilled or deionised water at a steady temperature (we run ours at 18 °C; OMTech recommends 16–21 °C). Avoid running continuously at high power where you can: OMTech's FAQ says running a tube above 70% power for long periods significantly shortens its life. Run air assist on every job, and clean the lens and mirrors weekly. It's the maintenance routine behind our OMTech reliability record, and with it our older machine's tubes have lasted about 13 months each and the Turbo's first tube about two years, mostly cutting at high power. For the full list of products we use, see our CO2 laser maintenance guide.

Not sure what you need?

Both our machines are running at our OMTech showroom in Buckley, North Wales, where visits are free and by appointment only: email info@cherrygrovecraft.co.uk with a couple of dates, and the full address comes with our confirmation. Or email the same address with your machine model and we'll tell you what we know. And if you haven't bought your machine yet, our OMTech discount code Cherrygrovecraft saves you 4% at omtech.uk (checked October 2026).

Frequently asked questions

What size laser tube does the OMTech Turbo 758 take?
OMTech's current listing quotes a 1250 × 80mm tube, but our Turbo-758, bought in June 2024, has a 1250 × 60mm YL H2. Measure the length and outside diameter of the tube in your own machine before ordering.

Where can I buy a replacement OMTech laser tube in the UK?
Phone OMTech UK on +44 7456 791497 first, even if the website shows out of stock. After that, Amazon UK, Cloudray's UK warehouse and established eBay sellers; AliExpress works but took about three weeks for us.

How much does a replacement OMTech laser tube cost?
In October 2026 omtech.uk listed its 80W and 90W tubes at about £250–£260, all out of stock when checked. When our Turbo's first 1250 × 60mm YL H2 wore out, about two years after we bought the machine in June 2024, we paid £260 from OMTech UK and £198 on AliExpress.

How do I know if my CO2 laser tube is dying?
Cuts gradually need more power or more passes, a fix that works for a few days and then stops. A tube that glows white or gives a split beam spot needs replacing, and if the mA meter shows current rising with no beam when you press PULSE, the tube is the likely cause.

Can I fit a new laser tube myself?
Yes, if you're competent and careful: on our Turbo the connections are plug-in, and on the older machine it needs a little soldering. While your machine is under OMTech's warranty, talk to OMTech first, because servicing by anyone other than an authorised representative is excluded.

Disclosure: some links on this page are affiliate links, and we earn a commission from OMTech on purchases made with our code or link. It costs you nothing extra.

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