High-Speed Automotive Injection Mold Pins | 0.005mm Precision Verticality

Product Overview

High-precision ejector pins play a critical role in stable demolding and consistent part quality in injection molds. Senlan Precision manufactures custom ejector pins with verticality control up to 0.005 mm, designed for high-cavity and tight-tolerance injection molding applications. All parts are produced strictly according to customer drawings under a built-to-print manufacturing model.

Core Features & Technical Advantages

• Verticality Control up to 0.005 mm
  Ensures accurate linear movement and reduces risk of part deformation during ejection.

• Built-to-Print / OEM Manufacturing
  Dimensions, head type, length, tolerance, and material are produced strictly per customer drawings.

• High Dimensional Consistency
  Controlled machining and grinding processes ensure repeatability in multi-cavity molds.

• Optimized Surface Finish
  Reduced friction and wear between ejector pin and guide components.

• Stable Performance in Long Production Runs
  Designed for continuous injection molding cycles with consistent ejection force.

Application Scenarios / Industry Use

• Multi-cavity injection molds

• Packaging cap and closure molds

• Medical plastic component molds

• Cosmetic and personal care packaging molds

• Precision industrial injection tooling

Mold Structure & Design Description

Ejector pins are key functional components responsible for pushing molded parts out of the cavity after cooling. Their performance depends on straightness, verticality, surface condition, and fit with ejector plates and guide systems. Senlan Precision manufactures ejector pins with controlled geometry and alignment to ensure smooth, repeatable ejection and reduced mold wear.

Manufacturing Capability & CNC Machining

Senlan Precision operates dedicated high-accuracy machining and grinding equipment, including:

• CNC machining centers from MAKINO

• CNC turning and grinding systems from HARDINGE

• Precision cylindrical grinding for straightness and verticality control

• In-process and final dimensional inspection

These capabilities support both prototype development and stable series production.

Custom Development / OEM Cooperation Process

1. Drawing Review
   Confirmation of material, tolerances, surface requirements, and functional parameters

2. Process Planning
   Machining and grinding strategy defined based on verticality and straightness targets

3. Precision Manufacturing
   CNC turning, heat treatment (if required), and precision grinding

4. Quality Inspection
   Verticality, straightness, and dimensional verification

5. Packaging & Export Delivery
   Industrial packaging suitable for international shipment

Quality Control & Export Experience

• ISO-based quality management system

• Incoming raw material inspection

• In-process dimensional monitoring

• Final inspection prior to shipment

• Stable export experience serving European and North American customers

Related Products

• Precision Mold Core Pins

• Ejector Sleeves

• Guide Pins and Bushings

• Threaded Mold Inserts

• Multi-Cavity Mold Components

Frequently Asked Questions (FAQ)

Q1: Is 0.005 mm verticality guaranteed for all ejector pins?
Verticality is achieved based on drawing requirements and part geometry. Feasibility is confirmed during drawing review.

Q2: Do you manufacture standard ejector pins?
No. All ejector pins are produced under a built-to-print / OEM model.

Q3: Can you support high-cavity mold applications?
Yes. Our ejector pins are widely used in multi-cavity injection molds with tight consistency requirements.

Q4: Are small batch or prototype orders accepted?
Yes. Both prototype and production quantities are supported.

Get a Quote

To receive a technical quotation, please provide:

• 2D / 3D drawings

• Material and hardness requirements

• Tolerance and verticality specifications

• Required quantity and delivery timeline

Our engineering team will review your request and respond with manufacturing feasibility and lead time.