Engineered for injection molders (automotive, electronics, consumer goods) struggling with uneven cooling or long cycle times, our custom cooling inserts are precision-machined to 1:1 match your CAD files (STEP, IGES, DXF) and tailored to your specific thermal needs—whether for high-heat resins (PC, PPS) or thin-walled parts (≤0.8mm) prone to warping. They optimize heat dissipation, cut cooling cycles by 20–40%, and ensure consistent plastic part quality across high-volume production runs.
Cooling is the most time-consuming step in injection molding (often 50–70% of total cycle time), but off-the-shelf or generic cooling inserts create 3 critical pain points:
- Mismatch with mold geometry (from poor drawing alignment) leads to uneven cooling—causing part warping (e.g., 1mm+ distortion in automotive trims) or sink marks;
- One-size-fits-all designs fail to address resin-specific thermal needs (e.g., PC requires faster heat removal than PP), extending cycle times by 10–15 seconds per part;
- Low-thermal-conductivity materials (e.g., standard steel) slow heat transfer, limiting production throughput for high-volume runs.
Heya solves these by designing cooling inserts exclusively from your CAD files and engineering them to your resin’s thermal properties—turning cooling from a bottleneck into a productivity driver.
We tailor every cooling insert to your mold’s unique geometry and thermal requirements, with flexibility to handle even the most complex part designs:

Our cooling inserts are engineered to deliver measurable productivity gains, with specs that directly impact your bottom line:
- Dual Certifications: ISO 9001 (general manufacturing) and IATF 16949 (automotive-grade) to meet strict standards for industries where cooling consistency is critical (e.g., automotive, medical).
- Thermal Validation: Every insert undergoes CFD (Computational Fluid Dynamics) simulation before production—verifying cooling efficiency and ensuring it meets your target cycle time.
- Material Traceability: Full documentation (alloy composition reports, thermal conductivity test data, machining records) provided for every batch—essential for clients requiring supply chain transparency (e.g., medical device manufacturers).

- Automotive Molders: For large parts (e.g., bumper covers, dashboard trims) where uneven cooling causes warping—conformal channels cut cycle time and ensure compliance with IATF 16949.
- Electronic Part Manufacturers: For thin-walled components (e.g., laptop casings, IoT device enclosures) where fast, uniform cooling prevents deformation and speeds up high-volume production.
- Medical Molders: For corrosion-resistant needs (S136 steel inserts) and precise cooling (e.g., syringe barrels)—ensures part consistency and meets FDA/CE requirements.
Need cooling inserts tailored to your CAD files and thermal needs? Upload your mold design (CAD/STEP)—Heya’s engineers will run a free CFD cooling simulation, share a DFM report, and provide a detailed quote within 24 hours.
Bonus: Download our [Cooling Insert Optimization Guide] for resin-specific cooling tips, channel layout best practices, and cycle time calculation tools.