Core Pins

Description

What is Core Pins ？

Core pins are integral components in injection molding and die casting, used to create internal cavities and shapes in molded parts. They play a vital role in defining the part’s dimensions and features.
Gunri offers precision-engineered core pins designed to meet the intricate requirements of molding applications. Our core pins are crafted with accuracy and durability in mind, ensuring optimal molding results.
Specifications
Material 1: SKH51
Hardness: 59-61HRC
Material 2: SKD61
Hardness: 40-45HRC
Surface hardness: HV900~
Coaxiality: < 0.005mm
Diameter: 0.3-20mm
Tip shape can be designated
Ready to optimize your molding operations with high-quality core pins? Contact Gunri for inquiries and explore how our products can enhance your manufacturing processes.

Our Manufacturing Capabilities

In-house machining30 CNC lathes (Okuma / Takisawa) and 6 machining centers for turned and milled precision components.

Grinding & honingCylindrical, internal and centerless grinding plus honing done in-house for tight diameters and surface finish.

On-site inspectionRoundness, roughness, Vickers hardness, force-curve, burst and fatigue testing before shipment.

Certified quality systemManufactured under ISO 9001:2015 and IATF 16949:2016; OEM drawings and brand equivalents welcome.