Custom Precision Collapsible Core
Custom Collapsible Cores for Complex Internal Mold Features
Nagatsu’s precision-engineered collapsible cores enable high-accuracy molding of complex internal undercuts such as O-ring grooves and snap-fit details.
Customizable, dimensionally stable, and compatible with ejector systems—ideal for lens barrel and high-precision applications.
Precision-Engineered Collapsible Cores by NAGATSU
Nagatsu’s custom-designed Collapsible Cores provide a cutting-edge solution for molding internal undercut features that are difficult or impossible to demold using traditional methods.
These cores are ideal for applications such as O-ring grooves, slots, snap-fit details, and lens barrels—eliminating the need for complex unscrewing mechanisms and enabling clean, efficient molding of intricate geometries.
Compared to off-the-shelf options, Nagatsu’s collapsible cores offer superior design flexibility and compatibility with additional mold structures such as ejector pins.
They are tailored to exact user specifications and achieve precision tolerances beyond catalog-grade components—making them ideal for high-performance manufacturing in fields like optics and electronics.
Supplier
| Company Name | Nagatsu Precision Mold Co., Ltd. |
| Website | https://nagatsu.co.jp |
| Headquarters | Kawasaki City, Kanagawa Pref., Japan |
| Founded | 1950 |
Specifications
| Customizable Dimensions | Inner diameter up to φ120 mm |
| Dimensional Accuracy | Diameter tolerance, roundness, and concentricity within 15μm (Material: PC G30) |
| Structural Compatibility | Can be combined with other mold elements (e.g., ejector pins) |
| Applications | – Lens barrels – O-ring grooves – Snap fits – Slots – Cam and screw shapes – Optical shading structures     |
Company Profile
Creating the Future through Precision Mold Technology
Founded in 1950, Nagatsu Precision Mold Co., Ltd. is a pioneering manufacturer in the field of high-precision injection molds for plastics. With a heritage of over 70 years, we have continually integrated advanced machining technologies with master craftsmanship to deliver world-class solutions in precision molding. Headquartered in Kawasaki City, Kanagawa Prefecture, we operate manufacturing facilities in Niigata Prefecture and maintain overseas bases in Hong Kong, China (Dongguan, Wuxi), and the Philippines.
Recognized by Japan’s Ministry of Economy, Trade and Industry (METI) as a “Local Future Leading Company” and one of “300 Dynamic Manufacturing SMEs,” we continue to innovate in the development of nano-level molds and automated manufacturing systems to meet the evolving demands of global industries.
Our Business
From Design to Mass Production — Precision, Speed, and Reliability
We specialize in the design and production of ultra-precise plastic injection molds and provide integrated services that include molding, coating, printing, and sub-assembly. Our products are widely used in the manufacturing of:
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Structural parts and casings for IT devices and high-end SLR cameras
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Automotive components
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Medical devices and specialized containers
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Customized precision parts using insert molding, magnesium molding, and complex undercuts
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Optical components requiring high precision movement and miniaturization
Leveraging our proprietary automated design systems, cutting-edge 3D measuring equipment, and over 50 nationally certified engineers, we ensure both exceptional mold accuracy and durable performance. Our overseas plants are ISO9001 and ISO14001 certified, with our Dongguan plant also IATF16949 certified, guaranteeing reliable quality for international clients.
Global Operations
Our global network enables full-scale production and delivery across Asia.
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Japan: Head Plant & Sales Office (Kawasaki, Kanagawa), Niigata Plant
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China: Dongguan, Wuxi, Shenzhen
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Hong Kong: Sales and technical support office
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Philippines: Production base in Laguna
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Custom Precision Collapsible Core
Nagatsu Precision Mold Co. Ltd.
Vendor Information
- Store Name: Nagatsu Precision Mold Co., Ltd.
- Vendor: Nagatsu Precision Mold Co., Ltd.
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Address:
211-0012
Kanagawa Kawasaki City 57 Nakamaruko
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