An injection mold is a hardened steel tool that turns plastic pellets into finished parts inside a press. The JC-IM series covers the four layouts that handle most production work, from a simple single-cavity tool to a 64-cavity hot runner system. Every tool ships with its steel certificates, CMM report, tryout sheet and process sheet.
Variants
| SKU | Layout | Cavities | Tool life | Lead time |
|---|---|---|---|---|
| JC-IM-2P | 2-plate, cold runner | 1–8 | 300k–500k shots | 25–32 days |
| JC-IM-3P | 3-plate, pin-point gate | 4–32 | 500k shots | 30–38 days |
| JC-IM-HR | Hot runner, valve gate | 8–64 | 500k–1M shots | 35–45 days |
| JC-IM-UN | Unscrewing, threaded parts | 2–16 | 400k shots | 38–48 days |
Specification
- Max mold size
- 1,200 × 900 × 900 mm
- Max part size
- 800 × 600 × 400 mm
- Tool tolerance
- ±0.01 mm on critical features
- Steel grades
- P20, 718H, S136, H13 (mill certificate included)
- Surface finish
- SPI A1–C3, EDM texture, bead blast
- Runner options
- Cold runner, hot runner, valve gate, pin-point
- Trial press
- 80–650 tonne
- Design software
- NX, SolidWorks, AutoCAD — STEP, IGES, X_T accepted
- Shipping
- Export plywood crate, anti-rust film, spare parts boxed
What is included in the price
- DFM report with a marked-up model you can forward internally
- 3D mold design approved by you before steel is ordered
- Steel mill certificates for plates, inserts and hot runner manifold
- CMM dimensional report on the tool and the first sample parts
- Trial run with your resin, with photos and a tryout sheet
- Process sheet with molding parameters for your own press
- Spare parts list with ejector pins, springs and water fittings by size
- Export packing and documents for sea or air freight
Choosing a cavity count
Cavity count is an arithmetic decision, not a preference. Divide your annual volume by the realistic shots per year, then round up. The table shows the typical crossover for a 20-second cycle running one shift, five days a week.
| Cavities | Shots per year | Annual output | Best for |
|---|---|---|---|
| 1 | ~648,000 | ~648,000 parts | Low volume, large parts, validation |
| 2 | ~648,000 | ~1.3 M parts | Steady medium volume |
| 4 | ~648,000 | ~2.6 M parts | High volume, small parts |
| 8+ | ~648,000 | 5 M+ parts | Fast-moving consumer parts |
Higher cavitation lowers unit cost but raises tool price, press tonnage and maintenance complexity. We quote two cavity counts side by side so the crossover is visible in money, not opinion.
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Injection mold FAQ
How many cavities should my mold have?
Cavity count follows annual volume divided by the shots you can realistically run per month. A 2-cavity tool at 20 seconds cycle makes about 200,000 parts a year on one shift. Higher cavitation lowers unit cost but raises tool price and press tonnage, so we quote two options and show the crossover point.
Is a hot runner worth the extra cost?
It pays back when you run engineering resins, need gate marks in a hidden area, or want to eliminate runner regrind. For short runs in commodity resin a cold runner is cheaper overall, and we will say so rather than upsell.
What do you need to start a mold design?
A 3D part model, the resin grade, the annual volume and your press tonnage if the tool will run in your plant. A 2D drawing with tolerance callouts on critical features helps but is not mandatory.
Who owns the mold design and the tool?
You do, once the tool is paid for. We hand over the 3D design files, the tool history file and the spare parts list at the same time as the tool.
Send a part model, get a tool price with a dated schedule
DFM note, line-item quotation and stage-by-stage lead time within one business day.
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