Hot Runner Heating
Precision Zone Heating for Hot Runner Systems
Hot runner systems require the most precise and reliable heating elements in the plastics processing industry. A fraction of a degree variation across manifold and nozzle zones can result in part defects, colour variation, or production downtime. Sri Ambika hot runner coil heaters and cartridge heaters are manufactured to the tightest tolerances for demanding hot runner OEMs.
Heating Problems
We Solve
Temperature variation between manifold zones causing part weight differences
Heater failure causing costly production downtime and scrap
Short service life from poor-quality coil heater construction
Thermocouple inaccuracy causing gate freeze or gate blush defects
Non-standard nozzle geometries requiring custom heater designs
Key Engineering
Considerations
Coil heater inner diameter tolerance (±0.05mm) for full contact with nozzle bore
Tight winding pitch for uniform wattage distribution along nozzle length
J or K thermocouple integration — grounded vs ungrounded sheath
Voltage specification: 24V, 48V, or 230V for manifold control zones
High-density cartridge heaters for manifold bore heating with integral TC
Recommended Heating Elements
Need Heaters for
Hot Runner Heating?
Submit your process parameters and receive heater recommendations with watt density calculations.