High-Hardness Mold Spring Core
Professional Sprung Core Solutions for Internal Undercuts
Factory Direct: Professional manufacturer offering OEM/ODM & custom machining services.
High Compatibility: 100% interchangeable with Cumsa, HASCO, and MISUMI standards.
Space-Saving: The ideal solution for releasing internal grooves and undercuts in compact mold designs.
Description
What is Sprung Core Technology in Injection Molding?
Sprung core technology (also known as Elastic Cores) simplifies the de-molding of undercuts by replacing complex mechanical lifters. Unlike traditional slides, GUNRI’s sprung cores utilize controlled ejector pin movement to release intricate features, reducing mold complexity and maintenance costs. It is the ideal solution for designers seeking to achieve complex geometries without overcomplicating mold structures.
Why Engineers Switch to GUNRI Sprung Cores:
Simplified Design: Eliminate bulky side-actions. By adjusting ejector pin sizes, you can create undercuts directly.
Durability: Rated for over 1 million cycles with specialized heat treatment.
Universal Compatibility: 100% interchangeable with CUMSA (AC series), MISUMI, HASCO, and DME standards.
Technical Specifications & Material Standards
| No. | Component Name | Material (Grade) | Hardness (HRC) |
|---|---|---|---|
| 01 | Holder | C3604 Equivalent | Base Material |
| 02 | Spacer | S45C | |
| 03 | Bolt | SCM435 | |
| 04 | Ejector Bar | 1.8159 Equivalent | 42 ± 3 HRC |
* Customization Note: As a direct factory, we offer alternative materials (e.g., 1.2344, H13) and customized hardness levels based on your specific mold requirements.
Custom OEM/ODM Service
As a dedicated factory, we support:
Direct Replacement: Send us the part number (e.g., Cumsa AC-01) for a quick quote.
Drawing-Based Customization: Upload your STEP/DWG files for precision OEM manufacturing.
Bulk Wholesale: Competitive pricing for mold makers and industrial distributors.
Disclaimer: All brand names, trademarks, and part numbers (e.g., Cumsa, DME, HASCO, MISUMI) are the property of their respective owners. Our products are high-quality compatible components and are not original parts from the aforementioned brands.
Additional information
| Standard | Standard: HASCO, MISUMI, DME, CUMSA, Non-standard (Custom) |
|---|---|
| Material | Custom |
| Service | OEM, ODM, Wholesale, Custom Design |
| Surface Treatment | Nitrided, Polished, DLC Coating |
