GS Machining

Core Pins & Ejector Pins

Precision core pins, ejector pins, and ejector sleeves for plastic injection molds. Tight tolerances with superior surface finish.

Product Gallery

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Our core pins and ejector pins are manufactured to the highest standards for plastic injection molding applications. With precision grinding and polishing, we achieve the surface quality and dimensional accuracy that mold makers demand.

Product Range

  • Core Pins: Standard and custom profiles for mold cavity forming
  • Ejector Pins: Through-hardened pins in various diameters and lengths
  • Ejector Sleeves: Thin-wall and standard sleeves for complex ejection requirements
  • Conical Ejector Pins: Tapered designs for specialized mold configurations

Specifications

  • Materials: Tool steel (1.2343, 1.2516, HSS), powder metallurgy steels (CPM10V, ASP23, ASP30), and carbide
  • Diameter Range: From 0.57mm micro pins to large-diameter sleeves up to 40mm+
  • Length Capability: Standard lengths to 630mm, custom lengths available
  • Surface Finish: Fine grinding and polishing to Ra0.4 or better

Quality Standards

All pins are inspected for straightness, diameter tolerance, surface finish, and hardness. We supply to mold makers serving automotive, electronics, medical device, and consumer products industries.

Core Pins & Ejector Pins - CNC grinding process

Why Choose Core Pins & Ejector Pins

Engineered for Performance

Tight Tolerances

Precision manufacturing to ±0.002mm for critical dimensions

Fast Turnaround

Rapid production with 7-10 day lead times on standard orders

Quality Materials

Premium tool steels, HSS, and carbide grades for maximum durability

Custom Designs

Engineered to your exact drawings and application requirements

Interested in Core Pins & Ejector Pins?

Contact us for pricing, samples, or custom specifications tailored to your application.