Custom Precision Mold Pins | ±pm$0.005mm Hardened Injection Molding Components

Product Overview

Custom precision mould parts injection molding pins are critical components for plastic injection molds requiring controlled hardness, wear resistance, and dimensional stability. Manufactured through precision CNC machining combined with controlled heat treatment processes, these pins ensure stable performance in high-cycle and multi-cavity mold systems. All parts are produced strictly according to customer drawings and technical specifications.

Key Features & Technical Advantages

• Precision-machined injection molding pins for mold core applications

• Controlled heat treatment to achieve stable hardness and strength

• Good wear resistance for repeated molding cycles

• High dimensional consistency after thermal processing

• Suitable for multi-cavity and high-volume injection molds

• Reliable surface quality for stable demolding behavior

• Fully customized / OEM / Built-to-Print manufacturing

Applications & Industries

These precision injection molding pins are widely used in:

• Plastic injection molds for packaging components

• Cap, closure, and sealing system molds

• Medical packaging and syringe-related mold assemblies

• Multi-cavity molds requiring consistent pin performance

They are suitable for applications where material strength, thermal stability, and repeatable accuracy are essential.

Mold Structure & Design Description

Injection molding pins are installed on the core side of molds to form internal features or functional geometries of plastic parts.
Key design considerations include:

• Accurate pin diameter, length, and functional tip geometry

• Proper clearance and alignment with cavity inserts

• Structural stability under injection pressure and thermal load

• Compatibility with replaceable and modular mold designs

All pins are manufactured strictly according to customer drawings to ensure correct assembly and reliable mold operation.

Manufacturing Capability & CNC Machining

Senlan Precision manufactures injection molding pins using advanced CNC machining and heat treatment control.
Our production facilities are equipped with high-precision machining centers from MAKINO (Japan) and HARDINGE (USA), enabling:

• High-accuracy CNC turning and milling

• Stable dimensional control before and after heat treatment

• Consistent machining quality across production batches

• Reliable repeatability for customized mould components

Process routes are optimized based on material selection, hardness requirements, and mold application conditions.

Custom Manufacturing & OEM Cooperation

We specialize in custom manufacturing and OEM cooperation, providing:

• Built-to-Print production from 2D drawings or 3D models

• Customized pin geometry, tolerances, and heat treatment specifications

• Prototype, small-batch, and volume production support

• Long-term supply of replacement injection molding pins

• Engineering communication throughout the project lifecycle

All manufacturing is executed based on confirmed technical documentation.

Quality Control & Export Experience

With over 20 years of experience in exporting precision mould components, Senlan Precision operates a structured quality control system:

• Incoming raw material inspection and traceability

• In-process dimensional inspection during machining

• Hardness and structural verification after heat treatment

• Final inspection prior to shipment with full documentation

We are experienced in international engineering communication and export quality requirements.

Related Mould Components

• Precision mold core pins

• Mold cavity inserts

• Mold sleeves and bushings

• Multi-cavity mold spare parts

All related components are available on a customized manufacturing basis.

Technical FAQ

Q1: Are injection molding pins produced strictly according to drawings?
Yes. All injection molding pins are manufactured strictly based on customer-provided drawings and specifications.

Q2: Why is heat treatment important for injection molding pins?
Heat treatment improves hardness, wear resistance, and structural stability, ensuring consistent performance during long production runs.

Q3: Can replacement pins be manufactured for existing molds?
Yes. Replacement and interchangeable pins can be produced to match existing mold designs.

Q4: Can hardness and tolerance be customized?
Yes. Hardness ranges and tolerance levels are defined during technical review based on application requirements.

Request a Quotation

For pricing, lead time, or technical consultation regarding custom precision injection molding pins with heat treatment, please provide your drawings or technical specifications.
Our engineering team will review your requirements and provide a professional quotation.