Custom CNC Machined Die Casting Core Pins & Sleeves | H13 Steel Tooling

Product Overview

Die casting mold core pins and sleeves are precision functional components manufactured for high-load molding environments requiring stable geometry and repeatable performance. Senlan Precision produces these components through turning, broaching, and drilling processes based strictly on customer drawings. Controlled machining routes ensure dimensional consistency, proper fit, and reliable operation in complex mold assemblies.

Core Features & Technical Advantages

• Built-to-Print / OEM Manufacturing
  All core pins and sleeves are produced according to customer-supplied drawings and specifications.

• Multi-Process Machining Capability
  Turning, broaching, and drilling processes are combined to achieve complex internal and external geometries.

• Stable Dimensional Control
  Tight control of concentricity, straightness, and fit tolerance ensures consistent mold performance.

• Material Flexibility
  Tool steels and alloy steels can be selected based on wear resistance, strength, and thermal stability requirements.

• Designed for High-Load Mold Structures
  Suitable for molds operating under repeated mechanical stress and long production cycles.

Application Scenarios / Industry Use

• Injection mold core systems

• Multi-cavity mold assemblies

• Packaging mold tooling

• Medical and laboratory plastic molds

• Industrial plastic part molding tools

Mold Structure & Design Description

Core pins and sleeves function as forming, guiding, or support elements within mold structures. Precision turning defines outer geometry, while broaching and drilling are applied for internal features such as oil channels, relief profiles, or assembly interfaces. Proper fit between pin and sleeve is critical to minimize wear, maintain alignment, and ensure smooth mold operation.

Manufacturing Capability & CNC Machining

Senlan Precision maintains dedicated machining resources for precision mold components:

• High-precision CNC machining centers from MAKINO

• CNC turning and milling equipment from HARDINGE

• Precision drilling and broaching processes

• Grinding for diameter and straightness control

• In-process and final dimensional inspection

These capabilities support both prototype and batch production.

Custom Development / OEM Cooperation Process

1. Drawing & Technical Review
   Confirmation of material, tolerance, and functional requirements

2. Process Planning
   Machining route selection (turning, broaching, drilling, grinding)

3. Precision Manufacturing
   CNC machining with controlled process parameters

4. Quality Inspection
   Dimensional and functional verification

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

All projects follow a Built-to-Print / OEM-only cooperation model.

Quality Control & Export Experience

• ISO-based quality management system

• Incoming material inspection

• In-process dimensional checks

• Final inspection before shipment

• Stable export experience serving EU and North American customers

Related Products

• Precision Mold Core Pins

• Mold Sleeves and Bushings

• Multi-Cavity Mold Components

• Injection Mold Inserts

• CNC Machined Mold Parts

Frequently Asked Questions (FAQ)

Q1: Are these core pins and sleeves standard items?
No. All components are custom-manufactured according to customer drawings.

Q2: Can internal features be machined by broaching or drilling?
Yes. Internal profiles, oil holes, and functional features are supported.

Q3: What tolerance range can be achieved?
Tolerance capability depends on design requirements and will be confirmed during drawing review.

Q4: Are these suitable for multi-cavity molds?
Yes. They are commonly used in high-cavity and complex mold systems.

Get a Quote

To receive a technical quotation, please provide:

• 2D/3D drawings

• Material specification

• Tolerance requirements

• Order quantity and delivery expectation

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