Introduction
We built a replacement gallium lamp for MHM exposure systems. The whole point? Give you a part that slides right in, works like the original, but actually outperforms it—with better output, more reliability, and a price that makes sense.
What makes it tick
Inside, it runs at400V and 2500W, because exposure work needs serious intensity. That power level creates the right heat to fire up the gallium-doped filament, and the result is a steady blast of shortwave UV that cures inks and coatings fast. The tube is300mm long, cut to match MHM machines exactly. So the beam hits the whole target area cleanly, without forcing you to overhaul the chamber.
Materials and design—built for the real world
We wrapped it in quartz. Why? Because it handles the heat and keeps UV transmission strong. Inside, the gallium doping focuses the spectrum where it matters—less wasted IR, more of what your photopolymer actually responds to. TheR7s connectoris a straight, two-contact fit. It wires up quickly and stays solid even when your machine is vibrating and moving. And yes, this lamp runs hot. That’s intentional. The heat is part of the job. Just make sure your fixture can keep up with the cooling.
What it feels like on the shop floor
You get exposure that stays consistent across the platen. That means fewer rejects, and less downtime spent re-exposing the same job. Because it’s a true drop-in, swapping lamps is quick—no fiddling with the holder. The gallium spectrum helps you get a sharp cure, fast, and the quartz envelope is tough enough for high-cycle work.
The one thing to keep in mind
This is a2500W, 400Vlamp, so it needs a stable power supply and enough airflow. If your cooling setup is undersized, you’ll shorten the lamp’s life. Match it to a system that’s up to the task, and you get a replacement that not only matches the original—it outperforms it, in testing and in daily production.