1.2083 Steel Multi-Cavity Core Insert | Cosmetic Pump Mold
High-precision multi-cavity core insert manufactured from 1.2083 / STAVAX / SS420 grades, engineered for cosmetic spray & pump molds. Designed for high-volume production of cosmetic pump housings and actuator parts where surface finish, dimensional stability and cavity interchangeability are critical.
Key Specifications
- Material: 1.2083 (or STAVAX / SS420 on request)
- Application: multi-cavity cosmetic pump molds (spray pumps, actuator housings)
- Typical cavities: 4-16 (customizable)
- Surface finish: mirror polish option for cosmetic parts
- Typical tolerance: ±0.01 mm (standard); up to ±0.005 mm on request
Product Description
Our 1.2083 multi-cavity core insert is a precision CNC-machined mold core block specially made for cosmetic pump tooling. Each bore and core pocket is processed and finished to ensure consistent part geometry across every cavity. The insert is optimized for:
- Excellent polishability (ideal for glossy cosmetic parts)
- Consistent dimensional stability under running conditions
- Easy maintenance and interchangeability in modular mold systems
Manufacturing process includes high-precision CNC roughing & finishing, EDM where required, grinding, and manual polishing. Final inspection uses CMM measurements and surface profilometry to guarantee repeatability.
Applications
This core insert is widely used in high-throughput plastic injection tooling for cosmetic and personal care packaging:
- Cosmetic spray pumps and actuator housings
- Airless pump components and closures
- Perfume & cosmetic dispensing pumps
- Multi-cavity production for packaging lines (4, 8, 12, 16 cavities)
Suitable for OEMs and mold makers producing consumer-facing cosmetic parts that require optical surface quality and tight dimensional control.
Precision & Manufacturing Capabilities
| Materials available |
1.2083, STAVAX, SUS420, P20, S136 (upon request) |
| Processes |
5-axis CNC turning/milling, wire-EDM, sinker EDM, precision grinding, manual & robotic polishing, thermal stress-relief |
| Standard tolerance |
±0.01 mm |
| Enhanced tolerance |
±0.005 mm for critical features (subject to drawing & sample approval) |
| Surface finish |
Ra 0.2-0.4 μm achievable; mirror polish (Ra <0.1 μm) for visible cosmetic parts |
| Heat treatment / finish |
Supplied in specified hardness or pre-hardened; coatings (TiN / DLC) available on request for longer mold life |
| Inspection |
CMM report, 2D/3D comparatives, roughness report, and first-article inspection available |
Customer Value
Engineered for cosmetic manufacturing advantages:
- Visual quality: Mirror-polished cavity surfaces reduce post-processing and improve final appearance
- High yield: Consistent cavity dimensions minimize rejects and rework
- Modularity: Core insert design allows fast exchange and reduced downtime
- Durability: Choice of stainless tool steels resists corrosion and supports long run lengths
- Faster time to market: Proven manufacturing workflow shortens lead times without sacrificing quality
Quotation Requirements
To prepare an accurate quote please provide:
- Part drawing (STEP / IGES) or 2D CAD with critical dimensions and tolerance notes
- Required material specification
- Cavity count requirements
- Surface finish requirements
- Expected production runs for mold life & coating optimization
- Delivery & packing requirements and any special testing
- Target budget & lead time (optional)
Frequently Asked Questions
Is 1.2083 the same as STAVAX?
1.2083 is a common stainless tool steel grade used for mold cavities and is often comparable/alternatively specified as STAVAX in tooling. We can supply either based on your specification.
What tolerance can you guarantee?
Standard ±0.01 mm. For critical features we can achieve ±0.005 mm with special process controls and inspection.
Can you provide mirror polish?
Yes — mirror polish for cosmetic surfaces is available. We supply surface roughness reports and sample photos for approval.
Do you offer coatings or surface treatments?
Yes — TiN, DLC, nitriding or passivation can be applied depending on material and part chemistry.
What inspection documents are supplied?
Typical delivery includes CMM report, roughness measurement, visual polish photos, and material certificates if required.
Cosmetic Pump Molds FAQ
How do you control flash around nozzle bores?
We recommend tight mold assembly tolerances and precision core/cavity alignment; when required we supply custom gate designs and valve gate options to minimize flash.
Request detailed technical support & drawing review — Upload CAD to get engineering DFM feedback within 48 hours
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