High Hardness CNC Ejector Pins | Precision Plastic Injection Mold Parts

Product Overview

CNC machined mold ejector pins are critical functional components used in plastic injection moulds to ensure stable, repeatable part ejection. Manufactured with high hardness tool steels and precision grinding processes, these ejector pins provide reliable performance in high-cavity and precision mould systems. All ejector pins are produced strictly according to customer drawings and technical specifications.

Key Features & Technical Advantages

• High hardness material options for extended service life

• Precision CNC turning and grinding for dimensional stability

• Excellent straightness and surface finish for smooth ejection

• Stable performance under continuous moulding cycles

• Suitable for high-cavity and precision injection moulds

• Custom lengths, diameters, head types, and tolerances available

• OEM / Built-to-Print manufacturing based on drawings

Applications & Industry Use

• Bottle cap and closure injection moulds

• Packaging container mould systems

• Medical consumables and disposable product moulds

• Multi-cavity injection moulds requiring stable ejection

• Precision plastic moulds with strict repeatability requirements

Mould Structure & Design Description

Ejector pins play a key role in mould operation by transferring ejection force from the ejector system to the molded part. Proper design and manufacturing accuracy help to:

• Prevent sticking or deformation during ejection

• Maintain consistent cycle times

• Reduce wear on mould cavities and cores

• Ensure stable operation in high-speed, high-volume moulding

Pin geometry, head configuration, clearance, and hardness are customized based on mould structure and application conditions.

Manufacturing Capability & CNC Machining Capacity

• CNC turning and precision grinding

• Centerless grinding for straightness control

• Controlled heat treatment for hardness consistency

• Polishing and surface finishing when required

• Dimensional inspection using precision measuring equipment

• Stable production capacity for long-term mould projects

Custom Development & OEM Cooperation Process

1. Review of customer drawings or technical data

2. Evaluation of material, hardness, and tolerance requirements

3. Manufacturing process planning

4. Sample or trial production if required

5. Batch production with full inspection

We specialize in custom ejector pins, OEM supply, and Built-to-Print mould components.

Quality Control & Export Experience

• Incoming material verification

• In-process dimensional inspection

• Straightness and surface quality checks

• Final inspection prior to shipment

• Experience supplying precision mould parts for overseas customers

Related Products (Internal Links)

• Precision Mold Core Pins

• Custom Mold Inserts

• Sleeve Ejectors

• Multi-Cavity Injection Mold Components

Frequently Asked Questions (FAQ)

Q1: What hardness range can be supplied for ejector pins?
Hardness can be customized based on application requirements and material selection.

Q2: Can you manufacture ejector pins according to drawings only?
Yes. All ejector pins are produced strictly according to customer drawings or approved specifications.

Q3: Are these ejector pins suitable for high-cavity moulds?
Yes. They are designed for stable performance in high-cavity and precision mould systems.

Q4: Can replacement ejector pins be produced for existing moulds?
Yes. Replacement parts can be manufactured based on drawings or samples.

Get a Quote

For CNC machined high hardness ejector pins for plastic injection moulds, please provide your drawings or technical requirements.
Our engineering team will review your project and provide a technical quotation promptly.