Custom SKD61 Stepped Core Pins | Precision Ejector Pins for Progressive Dies

Product Overview

SKD61 stepped core pins with configurable tip diameter and length are designed for progressive die ejector and injection mold applications requiring controlled ejection force, wear resistance, and dimensional stability. Manufactured strictly to customer drawings, these core pins support high-cycle mold operation and consistent ejector performance in precision plastic molding systems.

Key Features & Technical Advantages

• SKD61 hot work die steel for balanced hardness and toughness

• Configurable tip diameter and stepped geometry per drawing

• Stable performance under repeated ejector cycles

• Precision grinding for controlled concentricity and straightness

• Suitable for progressive die ejector and injection mold systems

• Built-to-Print manufacturing with tight dimensional control

Applications & Industry Use

• Progressive die ejector systems

• Injection molds with stepped or multi-stage ejector structures

• Precision plastic molding requiring controlled ejection

• Multi-cavity mold tooling with synchronized ejector movement

Mold Structure & Design Description

Stepped core pins are typically integrated into ejector assemblies where staged contact or controlled force distribution is required. The stepped profile allows defined engagement with molded parts during ejection, reducing stress concentration and improving part release consistency. All geometries, tolerances, and surface specifications are produced strictly according to customer-provided drawings.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision manufactures stepped core pins using advanced machining and finishing processes:

• High-precision CNC machining and grinding from MAKINO

• CNC turning and fine machining systems from HARDINGE

• Heat treatment optimized for SKD61 material performance

• Precision OD/ID grinding for stepped profiles

• Final inspection based on drawing-defined tolerances

Custom Development & OEM Cooperation Process

1. Review of customer drawings and ejector function requirements

2. Confirmation of SKD61 material condition and dimensions

3. CNC machining and stepped profile grinding

4. Heat treatment and finishing processes

5. Final inspection and export-ready packaging

All projects are handled under OEM / Built-to-Print cooperation.

Quality Control & Export Experience

• Incoming SKD61 material verification

• In-process dimensional checks during machining

• Post-heat-treatment hardness and geometry inspection

• Final inspection based on customer drawings

• Experience supplying precision mold components for export markets

Inspection reports and measurement data are available upon request.

Related Products

• Precision ejector pins

• Mold core pins and cavity inserts

• Progressive die mold components

• Custom non-standard mold spare parts

FAQ (Technical & Purchasing)

Q1: Can the tip diameter and step length be customized?
A: Yes, all dimensions are manufactured strictly according to customer drawings.

Q2: Is SKD61 suitable for high-cycle ejector applications?
A: Yes, SKD61 provides good wear resistance and thermal stability for repeated ejector use.

Q3: Are these core pins used only in progressive dies?
A: No, they are also widely used in injection molds requiring stepped ejector structures.

Q4: Do you support small batch or repeat orders?
A: Yes, both prototype and repeat production are supported.

Get a Quote

Please submit your drawings or technical specifications to Senlan Precision to receive a quotation for configurable SKD61 stepped core pins for progressive die ejector and injection mold applications.