18mm CO2 Laser Lens/Mirror Mounting for K40


There are no subcategories.

Acceptance Mark


Pin It
  • 18mm Laser Head w/Air Assist. Ideal for K40 Machine

click on thumbnail to zoom
Other products by Lightobject
Item #: LSR-LH1820B
Our Price: $16.50
239 units available


This is a laser head with air-assist . The laser head is capable of hosting a 18mm focus lens and a 20mm reflection mirror. Air tube fitting is 5mm in diameter.


This is a GREAT replacement for K40 or D40 that comes with no air-assist in original packing!


Air plug O.D: 5mm


Mounting plate cut hole requirement : 14mm in diameter


Suggested tubing:  5X8 Silicon Flex Tube for CO2 Water Cooling



Average Rating:
(based on 16 reviews)

Showing 1 - 5 of 16 Reviews:

by Ed
on 12/30/2016
Perfect upgrade
Before I purchased the K40 I saw this air assist head and decided I would try to make my own first. I thought it worked well until I got this head. The lightobject air assist is amazing! I bought it and the Improved 18mm ZnSe Focus lens (F50.8mm). The laser performance increased dramatically. I am able to cut at a third less mA with zero build up on my lens. I waited longer than I should have to buy this. If you're getting a K40 laser I suggest you set aside the money to order this head and a new lens at the same time.
by Graeme
on 12/8/2016
Streets ahead
There is no comparison with the original k-40 head. The machining on the original was abysmal with the mirror recess 1mm deeper on one side than the other and the nozzle outlet drilled offcentre. Excellent replacement.
by Mark Borden
on 11/21/2016
Great value
Nice construction. The lens cap was screwed on too tight and it was a bit of a job to get it off without damaging the threads on the housing mount but with some care, it was possible. You may need the lens adapter for the 12mm K40 lens. You can get an STL from Thingiverse.
by Régis
on 11/18/2016
Bon produit.Correspond bien à la description.Vendeur sérieux, livraison rapide.A recommander.
on 11/17/2016
18mm Laser Head w/Air Assist. Ideal for K40 Machine
Thank you so much, took longer to come from London than U S A .But one happy husband, well worth the delay
Review and Rate this Item