Micro Core Pins for Medical Molds | Ultra-Precision ±0.002mm Stainless Tooling

Product Overview

Small Core Pins are high-precision mould components used in medical injection moulds where micro features, dimensional stability, and repeatability are critical. Senlan Precision manufactures small core pins strictly on a Built-to-Print (OEM) basis, supporting tight tolerances, fine surface finishes, and stable performance for medical consumables and precision plastic parts produced in multi-cavity mould systems.

Key Features & Advantages

• Designed for micro and small-diameter core applications

• High dimensional accuracy and concentricity control

• Suitable for tight-tolerance medical mould requirements

• Excellent wear resistance and stable geometry over long production cycles

• Consistent performance in multi-cavity medical moulds

• Fully customized materials, dimensions, and tolerances (Built-to-Print)

Applications / Industry Use

• Medical consumables injection moulds

• Syringe, connector, and medical housing moulds

• Precision packaging components with small internal features

• High-cavity moulds requiring uniform core pin performance

• Injection moulds for thin-wall or micro-structured plastic parts

Mould Structure & Design Description

Small core pins are installed within the core side of the injection mould to form internal holes, channels, or fine structural details in plastic medical parts. Due to their reduced diameter, these pins require strict control of straightness, concentricity, and surface finish to prevent deflection, breakage, or premature wear during high-speed injection cycles.

Material selection, heat treatment, and surface finishing are optimized based on mould design and resin characteristics to ensure stable moulding performance.

Manufacturing Capability & CNC Machining

Senlan Precision produces small core pins using advanced precision machining processes to maintain accuracy and consistency at micro-scale dimensions.

Manufacturing capabilities include:

• High-precision CNC turning and milling

• Micro-feature machining and fine tolerance control

• Precision grinding for straightness and surface finish

• Controlled heat treatment for hardness and durability

• Final dimensional and visual inspection

Production is supported by advanced equipment, including Japanese MAKINO machining centers and U.S. HARDINGE precision lathes, ensuring repeatable quality for medical mould components.

Custom Development / OEM Cooperation Process

1. Customer provides drawings, specifications, or samples

2. Engineering review focusing on tolerance, material, and application

3. Confirmation of Built-to-Print manufacturing details

4. Precision machining and heat treatment

5. In-process and final quality inspection

6. Secure export packaging and delivery

All projects are handled as custom OEM medical mould components.

Quality Control & Export Experience

• Raw material traceability and verification

• In-process dimensional inspection for micro features

• Straightness, concentricity, and surface finish checks

• Final inspection prior to shipment

• Stable export supply for international medical and packaging mould makers

Related Products

• Precision mould core pins and sleeves

• Medical mould inserts and cavities

• Multi-cavity mould components

• High-precision ejector pins

• Custom injection mould spare parts

FAQ – Technical & Purchasing

Q1: How small can the core pin diameter be manufactured?
Diameters depend on material and design requirements. Feasibility is evaluated based on drawings and application conditions.

Q2: Are these core pins suitable for multi-cavity medical moulds?
Yes. They are commonly used in high-cavity medical moulds where consistency across cavities is critical.

Q3: Do you supply standard sizes?
No. Senlan Precision focuses on custom Built-to-Print manufacturing rather than standard stock items.

Q4: Can surface finish and hardness be customized?
Yes. Surface finish, hardness, and material selection are defined according to customer drawings and mould requirements.

Request a Quote

Please submit your technical drawings or specifications to receive a quotation for Small Core Pins Precision Mould Parts for Medical Part Injection Plastic Mould.
Senlan Precision supports OEM, high-precision mould components for medical, packaging, and multi-cavity injection mould applications.