Custom Precision Mold Core Pins | $pm$0.01mm Tolerance Injection Tooling Parts

Product Overview

Customized size plastic mold core pins are precision mold components manufactured for injection molding moulds requiring tight dimensional control and stable repeatability. Produced by Senlan Precision, these core pins are supplied strictly on a built-to-print basis, with dimensional tolerances controlled within ±0.01 mm, ensuring consistent cavity formation and reliable mould performance in high-cycle production environments.

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Core Features & Technical Advantages

• Customized Dimensions
  Diameter, length, step geometry, and end profiles manufactured to customer drawings

• Tolerance Control: ±0.01 mm
  Suitable for multi-cavity moulds and precision molding applications

• Material Options Available
  Tool steel, stainless steel, and hardened mold steel based on working conditions

• High Dimensional Stability
  Controlled machining process minimizes deformation during mould operation

• OEM / Built-to-Print Manufacturing
  No standard stock items; every part produced per technical specification

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Application Scenarios / Industry Applications

• Plastic Injection Molding Moulds

• Bottle Cap and Closure Mould Systems

• Medical Packaging and Syringe Moulds

• Multi-Cavity Production Moulds

• Precision Plastic Molding Tools

These mold core pins are widely used in applications where repeatable accuracy and cavity consistency are critical to product quality.

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Mould Structure & Design Explanation

In injection molding moulds, core pins define internal features and directly influence dimensional accuracy, part release, and mould wear behavior.
Core pins manufactured with ±0.01 mm tolerance help to:

• Maintain cavity alignment in multi-cavity moulds

• Reduce flash and dimensional deviation of molded parts

• Improve mould life by ensuring uniform load distribution

Proper core pin design is essential for stable molding cycles and predictable maintenance intervals.

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Manufacturing Capability & CNC Machining Capacity

Senlan Precision applies a controlled machining process for plastic mold core pins:

• CNC Turning and Milling for primary geometry

• Precision Grinding for diameter and straightness control

• Optional EDM Processing for complex profiles

• Heat Treatment (if required) based on material and application

Typical manufacturing capability:

• Diameter tolerance: ±0.01 mm (tighter tolerances on request)

• Straightness and concentricity: per drawing requirement

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Custom Development / OEM Cooperation Process

1. Drawing & Technical Requirement Review

2. Material and Process Selection

3. Precision CNC Machining

4. In-Process and Final Inspection

5. Batch Supply or Long-Term Program Support

This process supports both new mould development and replacement core pin production.

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Quality Control & Export Experience

• ISO 9001 quality management system

• Material verification and traceability

• Dimensional inspection using calibrated measuring equipment

• Tolerance verification according to customer drawings

• Stable export experience for precision mold components

Inspection reports can be provided upon request.

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Related Precision Mold Components (Internal Links)

• Precision Mold Core Inserts

• Injection Mold Cavities

• Mold Sliders and Guide Components

• Custom Mold Bushings

• CNC Machined Mold Parts

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Frequently Asked Questions (FAQ)

Q1: Are these core pins standard products?
A: No. All mold core pins are manufactured exclusively according to customer drawings.

Q2: Is ±0.01 mm tolerance achievable for long core pins?
A: Yes, depending on length-to-diameter ratio and design. Technical evaluation is required.

Q3: What materials can be used?
A: Tool steel, stainless steel, hardened mold steel, and other specified materials.

Q4: Can small batch orders be accepted?
A: Yes. Prototype and low-volume orders are supported.

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Request a Quotation

For customized plastic mold core pins, precision injection molding components, or OEM mold parts manufactured to drawing, please send your technical drawings and requirements to Senlan Precision.
Our engineering team will review feasibility and provide a detailed quotation.