When your Sidel Combi SF300 is running 600–800 bottles per hour, the heating tunnel is no place for seat-of-the-pants tuning. A few degrees of preform temperature drift shows up fast—PET wall sagging, blow pin issues, and scrap piling up. The OEM heater lamp has to hit the setpoint quickly, hold it, and keep the whole cycle stable. That’s exactly why we built the Sidel Combi SF300 blower heater lamp around a short-wave infrared (NIR) quartz emitter. What matters, technically It runs off a 230V supply, putting out the wattage the SF300 heating zone is expecting, so you don’t have to chase power balance across modules. The quartz tube matches the original geometry and mounting—same R7s connector, same length—so it’s a straight swap. No bracket fabrication, no rewiring. Short-wave infrared responds fast, coming up to operating temperature quickly and recovering fast after door cycles. We spec the filament and reflector pattern to keep the heat profile consistent across the preform neck and shoulder, where you need stable crystallinity and even stretch. Why this works on the Combi SF300 On a Combi SF300, the heater lamp lives in a tight thermal loop with the blower and the airflow layout. If the emitter output doesn’t match what the machine expects, you end up trying to compensate with blower speed—and you still get hot and cold bands. This lamp is tuned to the SF300 heating tunnel, so the control loop behaves predictably. You get quicker recovery after jams, fewer temperature-related rejects, and more consistent bottle weight and clarity. Energy use drops because the system spends less time overshooting and correcting. A few shop-floor details This lamp is designed as a direct replacement for the Sidel Combi SF300, but double-check the voltage and connector type on your machine’s label before ordering. Keep the blower intake clean and make sure the lamp stays aligned in the reflector—misalignment and dust buildup will shift the heating pattern, even if the lamp itself is within spec. Expect 5,000+ hours of stable output under normal PET schedules, and plan the replacement during scheduled downtime. That’s how you avoid the unplanned stoppages that cost you most.