Custom Precision Mold Core Pins | Bespoke Ejector & Insert Pins for Injection Moulds

Product Overview

Non-standard mold core pins and ejector insert pins are precision components used in injection molds to form product features and support stable ejection during molding cycles. Manufactured through CNC machining and precision finishing processes, these pins provide accurate geometry, consistent performance, and reliable interchangeability. All components are custom produced strictly according to customer drawings and application requirements.

Key Features & Technical Advantages

• Precision-manufactured non-standard core pins and ejector insert pins

• Custom geometries for complex mold designs and special functions

• Tight dimensional control for critical molding and ejection areas

• Consistent surface finish to reduce wear and friction

• Stable performance in multi-cavity and long-run molds

• Suitable for replacement and maintenance of existing molds

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

Applications & Industries

These non-standard mold core pins and ejector insert pins are widely used in:

• Injection molds for packaging caps and closures

• Mold systems for bottle caps and sealing components

• Medical packaging molds and syringe-related tooling

• Precision molds requiring customized pin structures

They are especially suitable for applications requiring custom pin geometry, precise alignment, and reliable ejection performance.

Mold Structure & Design Description

Core pins and ejector insert pins are designed as functional elements integrated into the core and ejector systems of injection molds.
Key design considerations include:

• Accurate pin geometry matching cavity and product features

• Proper fit and guidance within mold assemblies

• Structural strength to withstand injection pressure and repeated motion

• Compatibility with multi-cavity mold layouts and ejection systems

All components are designed and manufactured strictly based on customer drawings to ensure correct assembly and stable mold operation.

Manufacturing Capability & CNC Machining

Senlan Precision manufactures non-standard mold pins using advanced CNC machining and finishing technologies.
Our production facilities are equipped with high-precision machining centers and CNC lathes from MAKINO (Japan) and HARDINGE (USA), along with other internationally recognized equipment, enabling:

• Machining accuracy up to ±0.002 mm

• Stable tolerance control for slender and high-precision pin features

• Consistent surface quality for smooth ejection performance

• Reliable repeatability for customized and replacement mold pins

Machining routes are selected according to pin geometry, tolerance requirements, and functional application.

Custom Manufacturing & OEM Cooperation

We specialize in custom manufacturing and OEM cooperation, supporting:

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

• Custom material selection and heat treatment options

• Small-batch prototyping and volume production

• Long-term supply of replacement and spare mold pins

Technical communication is maintained throughout the project to ensure accurate execution of customer specifications.

Quality Control & Export Experience

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

• Incoming material inspection and traceability

• In-process dimensional and surface inspections

• Final inspection prior to shipment

• Complete inspection records and technical documentation

We are experienced in international technical communication, quality requirements, and export packaging standards.

Related Mold Components

• Precision mold core pins

• Ejector pins and ejector sleeves

• Mold inserts and cavity inserts

• Multi-cavity mold spare parts

All related products are available on a custom manufacturing basis.

Technical FAQ

Q1: Are non-standard core pins and ejector pins manufactured according to drawings?
Yes. All components are produced strictly based on customer-provided drawings and specifications.

Q2: Can customized pin shapes and sizes be supported?
Yes. Non-standard geometries, special tips, and custom dimensions are fully supported.

Q3: What tolerance levels can be achieved?
Depending on pin geometry and length, machining accuracy up to ±0.002 mm can be supported.

Q4: Can these pins be used as replacement parts for existing molds?
Yes. Replacement and interchangeable pins can be manufactured to match existing mold designs.

Request a Quotation

For pricing, lead time, or technical discussion regarding non-standard mold core pins and ejector insert pins for injection molds, please provide your drawings or technical specifications.
Our engineering team will review your requirements and provide a professional quotation accordingly.