H13 (AISI) Precision Mold Core Pins | 48-50 HRC Mirror Polished Components

Product Overview

Durable mold core pins manufactured by Senlan Precision are engineered for high-precision injection molding applications requiring stable dimensional accuracy and long service life. Produced with controlled hardness of 48–50 HRC and precision polishing, these mold core pins are suitable for demanding mold environments where wear resistance, surface quality, and repeatability are critical.

Key Features & Technical Advantages

• Controlled Hardness (48–50 HRC)
  Optimized balance between wear resistance and toughness for long production cycles.

• Precision Polished Surface
  Reduced friction during molding and demolding, improving part consistency and mold lifespan.

• High Dimensional Accuracy
  Manufactured with tight tolerances to ensure stable mold alignment and cavity consistency.

• Durable Mold Performance
  Designed to withstand repeated injection cycles and thermal stress without deformation.

• Built-to-Print / OEM Manufacturing
  Fully customized according to customer drawings, tolerances, and functional requirements.

Application Scenarios / Industry Applications

• Injection mold core systems

• Bottle cap and closure molds

• Packaging mold components

• Medical packaging and syringe molds

• Multi-cavity and high-output injection molds

These mold core pins are widely used in tooling systems that require high surface finish, consistent hardness, and long-term dimensional stability.

Mold Structure & Design Explanation

Mold core pins play a critical role in defining internal features and functional geometry in injection molds.
Proper design and machining ensure:

• Accurate cavity formation

• Stable core positioning during injection

• Reduced wear on mating components

• Consistent molded part quality across multiple cavities

Precision polishing further improves resin flow and reduces sticking during demolding.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision operates advanced CNC machining and finishing equipment, including:

• Japan MAKINO high-precision CNC milling centers

• USA HARDINGE CNC turning and grinding machines

Manufacturing processes include:

• CNC milling and turning

• Precision grinding and polishing

• Controlled heat treatment

• Final dimensional inspection

Typical capability:

• Tolerance: ±0.01 mm (or per customer drawing)

• Suitable for prototype, small-batch, and mass production mold components

Custom Development / OEM Cooperation Process

1. Review of customer drawings and technical specifications

2. Material and hardness confirmation

3. CNC machining and surface polishing

4. In-process and final inspection

5. Packaging and export delivery

This process supports new mold projects, replacement core pins, and mold refurbishment programs.

Quality Control & Export Experience

• ISO 9001 quality management system

• Incoming material inspection and traceability

• In-process dimensional control

• Hardness and surface finish verification

• Extensive export experience serving global mold manufacturers and OEM customers

Inspection reports and material certificates are available upon request.

Related Products

• Precision Mold Core Inserts

• Injection Mold Cavities

• Ejector Pins and Sleeves

• Mold Sliders and Wear Parts

• Custom CNC Machined Mold Components

Frequently Asked Questions (FAQ)

Q1: Are these mold core pins standard parts?
A: No. All mold core pins are custom manufactured based on customer drawings.

Q2: What hardness range can you provide?
A: Standard range is 48–50 HRC, other hardness requirements can be discussed.

Q3: Can polishing specifications be customized?
A: Yes. Surface finish and polishing level are defined according to mold design requirements.

Q4: Are these suitable for multi-cavity molds?
A: Yes. They are designed for both single-cavity and multi-cavity injection molding systems.

Request a Quotation

For durable mold core pins, precision injection mold components, or OEM CNC machining services, please contact Senlan Precision with your drawings and technical requirements.
Our engineering team will provide a detailed technical evaluation and quotation.