Barrel Heaters - Hasmak.com.tr

W A T L O WHot RunnerNozzle <strong>Heaters</strong>Technical DataMaximum Allowable Watt DensityThe following derating factors applyto the Maximum Allowable WattDensity chart, which are shown inboth inch base and metric for yourconvenience. Please review thesefactors and the chart to determinethe correct watt density curve foryour application.Derating Factors:• For units over 51 mm (2 in.) inwidth, multiply wattdensity by 0.8.• In applications where unusualoperating conditions are present,such as irregular mountingsurfaces, contact the Watlowfactory in St. Louis, Missouri,for watt density limitations.• For applications where insulatingblankets are used, multiply W/in 2(W/cm 2 ) by 0.75.Part Temperature–°F13001200110010009008007006005005 10 15 20 25 30 35152.4 mm I.D. (6 in.)254 mm I.D. (10 in.)Maximum Allowable Watt DensityWatt Density–W/cm 276.2 mm I.D. (3 in.)Allowable watt density for 1.5 in. wideMI Band heaters:• Moderate cycling• <strong>Heaters</strong> properly clamped• <strong>Heaters</strong> mounted on a smooth cylinder38.1 mm I.D. (1.5 in.)700600500400300Part Temperature–°CInjection MoldingHot Runner Nozzle <strong>Heaters</strong>355.6 mm I.D. & 2 Piece (14304.8 mm I.D.400300200in.)(12 in.)20010010 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230Watt Density–W/in 2137