Hot Runner Systems
Hot runner systems — manifolds, nozzles and temperature controllers for injection molds, designed with mold flow analysis, eliminating sprue waste and cutting cycle time.
Why Hot Runner Systems
Hot runner systems — manifolds, nozzles and temperature controllers for injection molds, designed with mold flow analysis, eliminating sprue waste and cutting cycle time.
- Manifold, nozzle and controller complete systems
- Eliminates sprue waste — lower cost per part
- Designed with mold flow analysis for your resin
- Balanced flow for consistent part quality
- Interchange nozzle tips for common gate types
- Fast temperature response and precise control
HOT VS COLD
Hot Runner or Cold Runner — Cost Per Part
| Factor | Cold Runner | Hot Runner |
|---|---|---|
| Material Waste | Sprue and runner scrap (recyclable) | No sprue waste |
| Cycle Time | Longer — sprue must cool | Shorter — no sprue cooling |
| Tooling Cost | Lower | Higher (manifold + controllers) |
| Best For | Low volume, simple parts | High volume, multi-cavity |
We model both options in your DFM review — the recommendation is the one with the lowest cost per part over your program volume.
FAQ
Questions Buyers Ask
What is a hot runner system?
A heated manifold and nozzle system that keeps resin molten from the machine nozzle to the gate — eliminating cold sprue waste and reducing cycle time.
When should I use a hot runner?
For high-volume production, multi-cavity molds, large parts with expensive resin, or when cosmetic gate marks must be minimized. Our DFM review recommends the right runner architecture.
Do you design hot runner systems?
Yes — complete systems are designed with mold flow analysis, balanced for your resin and cavity layout.
Can you retrofit a hot runner into an existing mold?
Yes — we design and build hot halves for existing molds, including manifold, nozzles and controllers.
What gate types are available?
Hot tip, valve gate and edge gate nozzles with interchangeable tips for different part geometries.
How do you control temperature?
Precision PID temperature controllers with thermocouple feedback on each zone, tuned for your resin window.