500mm Straight Ejector Pins | Precision Die Casting Mold Parts for Automotive Tooling

Product Overview

Length 500 mm straight ejector pins are precision mold components designed for deep-cavity and long-stroke injection molding applications. Senlan Precision manufactures extra-long ejector pins with controlled straightness and dimensional stability to ensure reliable ejection performance. All parts are produced under a Built-to-Print model, strictly following customer drawings and technical specifications.

Key Features & Advantages

• Extra-Long Length Capability (Up to 500 mm)
  Suitable for deep mold structures and long ejection stroke requirements.

• High Straightness Control
  Precision grinding and heat treatment minimize bending risk during operation.

• Stable Mechanical Performance
  Optimized material selection supports wear resistance and structural integrity.

• Consistent Dimensional Accuracy
  Tight tolerance control ensures reliable alignment within ejector systems.

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

Application Scenarios / Industry Use

• Injection molds for bottle and closure production

• Packaging and container mold systems

• Medical consumables and syringe component molds

• Deep-core and high-aspect-ratio mold designs

• Multi-cavity mold assemblies requiring long ejector travel

Mold Structure & Design Description

Straight ejector pins with extended length are typically installed in deep cavity molds where standard ejector pins are insufficient. Structural straightness, concentricity, and surface finish are critical to avoid deflection and uneven ejection. Senlan Precision controls grinding accuracy and heat treatment parameters to ensure stable performance under repeated molding cycles.

Manufacturing Capability & CNC Machining

Senlan Precision is equipped with advanced machining systems for long and precision mold components:

• CNC machining centers from Japan MAKINO and USA HARDINGE

• Precision turning and cylindrical grinding for long ejector pins

• Controlled heat treatment and straightness correction processes

• Stable machining accuracy for extended-length components

• Capability for both prototype and batch production

Custom Development / OEM Cooperation Process

1. Drawing Submission – 2D/3D drawings with length, tolerance, and material requirements

2. Technical Review – Straightness, heat treatment, and application evaluation

3. Process Planning – Machining and grinding route definition

4. Manufacturing & Inspection – In-process dimensional and straightness checks

5. Final Inspection & Delivery – Export-ready packaging and documentation

All production follows OEM / Built-to-Print principles.

Quality Control & Export Experience

• Incoming material verification and traceability

• In-process inspection for straightness and diameter consistency

• Final dimensional and surface inspection

• Stable quality for repeat long-length ejector pin orders

• Extensive export experience with European and North American mold manufacturers

Related Products

• Precision Ejector Pins and Sleeves

• Long Core Pins for Injection Molds

• Custom Mold Inserts and Guide Components

• Multi-Cavity Mold Tooling Parts

• CNC Machined Mold Components

Frequently Asked Questions (FAQ)

Q1: Can ejector pins longer than 500 mm be manufactured?
Yes. Length capability can be adjusted based on drawing and application requirements.

Q2: How is straightness controlled for long ejector pins?
Through precision grinding, controlled heat treatment, and straightness inspection.

Q3: Are materials customizable?
Yes. Material selection is based on customer drawings and mold performance needs.

Q4: Do you provide standard sizes?
We focus on custom, Built-to-Print manufacturing rather than standard catalog items.

Get a Quote

Please provide your drawings, length specifications, tolerances, and material requirements.
Our engineering team will review your project and provide a detailed quotation and lead time.