H13 Heat-Resistant Ejector Pins | 0.005mm Tolerance Straight Core Pins

Product Overview

H13 heat-resistant ejector pins and straight core pins manufactured for injection molding applications requiring high thermal stability and precise straightness control. With straightness tolerance maintained within 0.005 mm, these components ensure reliable ejection performance, stable mold operation, and consistent part quality. All parts are produced strictly according to customer drawings under OEM and Built-to-Print requirements.

Key Features & Technical Advantages

• H13 hot work tool steel with excellent heat resistance

• Straightness tolerance controlled within ≤ 0.005 mm

• Stable mechanical performance under repeated thermal cycles

• Precision cylindrical grinding for dimensional consistency

• Suitable for long-cycle and high-temperature molding processes

• Fully customized dimensions based on customer specifications

Applications & Industry Use

• Injection molds for bottle caps and closures

• Packaging component molds

• Medical plastic mold assemblies

• Multi-cavity injection mold systems

• Mold tooling requiring stable ejector performance

Mold Structure & Design Description

These ejector pins function as critical moving components within injection molds, responsible for controlled demolding of molded parts. High straightness and thermal stability are essential to prevent binding, uneven ejection, or premature wear. Pin diameter, length, head design, and fit tolerance are manufactured according to customer drawings to ensure compatibility with specific mold structures.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision maintains consistent machining accuracy through advanced manufacturing equipment and controlled processes, including:

• High-precision machining centers from MAKINO

• CNC turning and grinding equipment from HARDINGE

• Precision cylindrical grinding for straightness control

• Heat treatment process management for H13 material

• Capability to meet micron-level dimensional requirements

Custom Development & OEM Cooperation Process

1. Customer drawing and technical requirement review

2. H13 material selection and heat treatment planning

3. CNC turning and precision grinding

4. In-process inspection of straightness and dimensions

5. Final inspection, packaging, and export shipment

All ejector pins are manufactured under OEM / Built-to-Print cooperation with no standard stock sizes.

Quality Control & Export Experience

• Incoming H13 material inspection

• In-process dimensional and straightness measurement

• Final inspection using precision measuring instruments

• Quality documentation available upon request

• Experience supplying precision mold components to international customers

Related Products

• Precision core pins and stepped pins

• Mold cavity inserts

• Thread core inserts

• Injection mold spare parts for multi-cavity systems

FAQ (Technical & Purchasing)

Q1: How is straightness within 0.005 mm controlled?
A: Straightness is achieved through precision cylindrical grinding and in-process inspection.

Q2: Are dimensions fully customizable?
A: Yes. All ejector pins are manufactured strictly according to customer drawings.

Q3: Is H13 suitable for high-temperature molding applications?
A: Yes. H13 provides excellent thermal fatigue resistance and dimensional stability.

Q4: Do you offer standard sizes?
A: No. Senlan Precision focuses on non-standard, Built-to-Print manufacturing.

Get a Quote

Please submit your drawings or technical specifications to Senlan Precision to receive a quotation for H13 heat-resistant ejector pins with 0.005 mm straightness tolerance.