Now available in Australia through Waterjet Parts Australia, the Aqualon MAXJET 5i replacement cutting head is a high-performance, OEM-compatible upgrade built for demanding abrasive waterjet cutting applications. Designed and manufactured in Sweden with precision, it’s a drop-in replacement for the OMAX 5i style head — with some serious durability improvements.
What It Is

This head is a direct replacement for the OMAX 5i style (OMAX Part No. 320303-15). That means the same geometry, the same tip location, and the same clocked thread — so your abrasive feed lines up exactly like the original. Plug it in, and you’re back to cutting. No offsets. No recalibration.
Built with Better Materials
Where this head really steps up is in material quality and long-term wear resistance. Aqualon sources its diamonds from DTI (Diamond Technologies Inc.), a supplier known for producing some of the toughest and most consistent industrial diamonds on the market. These aren’t off-the-shelf synthetics — they’re carefully graded and spec’d for abrasive waterjet use.
Improved Wear Insert = Longer Life
One of the weak points in the OEM design is how exposed the diamond is to back-lash during operation. Aqualon’s redesign introduces an improved wear insert that shields the diamond from that kind of damage — a smart fix that extends service life and maintains cut performance longer between replacements.
Available Options
The Aqualon MAXJET 5i replacement head comes in multiple orifice sizes to suit your application:
– 0.25 mm — Aqualon 12785 (OEM Equivalent: OMAX 320303-10)
– 0.28 mm — Aqualon 12784 (OEM Equivalent: OMAX 320303-11)
– 0.30 mm — Aqualon 12783 (OEM Equivalent: OMAX 320303-12)
– 0.35 mm — Aqualon 12782 (OEM Equivalent: OMAX 320303-14)
– 0.38 mm — Aqualon 12779 (OEM Equivalent: OMAX 320303-15)
– 0.40 mm — Aqualon 12780 (OEM Equivalent: OMAX 320303-16)
– 0.50 mm — Aqualon 12781 (OEM Equivalent: OMAX 320303-20)
Why It Works
– Exact same geometry: Fits and functions like the original
– Clocked threading: Keeps abrasive inlet orientation locked in
– Same tip location: No need to touch your nozzle standoff or height calibration
– High-grade DTI diamond: Built to last under real-world cutting conditions
– Better protection: The wear insert adds real-world durability where it’s needed most
Bottom Line
If you’re replacing a MAXJET 5i head, the Aqualon version gives you everything the OEM offers — plus smarter protection and top-tier diamond quality. It’s a true drop-in replacement that performs like the original and lasts longer. No adjustments. No surprises.
If you’re unsure whether this fits your current setup or want help matching nozzles or mixing tubes, contact Waterjet Parts Australia — we’ll help you get it right the first time.
