When your Sacmi stretch blow molder is running, the heating tunnel has one job: get every preform to the right temperature before high pressure hits. If lamp output starts drifting, you’ll see thickness drift, haze, and scrap climbing. We built the Sacmi blow molding machine lamp to match the OEM thermal profile, so you stop chasing temperature swings. What matters technically This is a short-wave infrared halogen lamp, built for fast response and tight control in the heating tunnel. The quartz envelope gives you high intensity with minimal thermal mass, so the lamp hits setpoint quickly and follows recipe changes without lag. Wattage and voltage are matched to the Sacmi fixture, and the R7s connector drops in without rewiring. Output stays stable over 5,000+ hours, with less than 5% drop in irradiance. Why it works on a Sacmi line On a Sacmi blow molding line, that stability translates to repeatable preform heating across cavities. You end up with fewer pinholes, less crystallization, and less variation in bottle weight. The fast start also cuts warm-up time after changeovers, so you spend more time producing and less time waiting for the tunnel to settle. Energy use stays in line because the lamp heats on demand and holds temperature without overshoot. Here are the practical details Installation is straightforward, but alignment is critical. Even a small offset moves the hot spot on the preform and can drive uneven heating. Make sure the lamp is compatible with your specific Sacmi model and the existing reflector geometry, and verify voltage and tolerance at the terminal block. Handle by the base, not the quartz, and keep the heating zone clean—dust on the lamp or reflector scatters energy and skews the profile.