Stop Fighting Heat Fluctuations in Your Sidel SBO Series 2
If you’ve spent any time running a Sidel SBO Series 2, you know the headache of uneven heating. One minute everything is fine, and the next, you’re seeing pearlescence or weird wall thickness in your PET bottles. It’s frustrating. Usually, this happens because of a common mistake: mixing and matching lamps from different vendors. Here’s the thing. If the wattage isn’t a perfect match for the original specs, you get “cold spots” in the oven. It ruins the consistency of the preform, and suddenly you’re spending your whole shift fighting the machine.
Why Power Matching Actually Matters
We build our replacement lamps to hit the exact voltage and wattage the SBO Series 2 expects. Why does that matter? Because if you drop in a lamp with slightly different resistance, the current draw shifts. That shift messes with the heat profile across the preform. By keeping the tolerances tight, your oven settings actually stay put. You can stop obsessing over the PLC settings and just let the machine run. It’s a relief to just set it and forget it.
The Nitty-Gritty on the Build
We use high-purity quartz glass because these things take a beating with rapid thermal cycling. They need to be tough. The filaments are calibrated for shortwave IR. This is key because shortwave radiation punches through the PET wall much faster than longwave does. And we didn’t overcomplicate the fit. We use standard R7s or SK15 connectors. They just slide right in. No hacking the sockets, no messing with the cabling—just a simple swap.
A Few Things to Keep in Mind
High-wattage lamps are great for high-speed production, but they bring a lot of heat into the oven housing. A lot. If your cooling blowers are clogged or acting up, these lamps will burn out way too fast, usually starting at the end caps. Keep those blowers clean. And while you’re at it, give your reflectors a polish. You want that energy hitting the preform, not soaking into the machine frame. It’s a small bit of maintenance that saves you a lot of money in the long run.