H13 (SKD61) Cavity Inserts | Precision Tooling for Bottle Cap Molds

Product Overview

SKD61 cavity inserts are critical functional components used in plastic injection molds for daily packaging bottle caps. Manufactured by Senlan Precision, these cavity inserts are produced strictly according to customer drawings, focusing on dimensional accuracy, thermal stability, and wear resistance. They are designed to support consistent molding performance in high-cycle, multi-cavity cap molds.

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Key Features & Technical Advantages

• SKD61 Tool Steel Material
  Offers good toughness, heat resistance, and dimensional stability during injection molding.

• Built-to-Print Manufacturing
  Fully customized according to customer drawings and technical specifications.

• High Precision Machining
  Accurate cavity geometry ensures stable part dimensions and surface consistency.

• Stable Performance in High-Cycle Molds
  Suitable for long production runs in multi-cavity mold systems.

• Compatible with Complex Cap Mold Designs
  Supports threaded, sealing, and functional cap structures.

Application Fields / Industry Use

• Bottle Cap Injection Molds
  Cavity inserts for closures used in daily packaging containers.

• Packaging Component Molds
  For plastic caps, lids, and sealing parts.

• Multi-Cavity High-Output Molds
  Designed for molds requiring repeatable cavity balance.

• Medical & Laboratory Packaging Molds
  Applications requiring stable geometry and controlled tolerances.

Mould Structure & Design Description

The cavity insert forms the external geometry of the molded plastic cap and is integrated into the mold cavity plate. Its design focuses on accurate cavity profiles, uniform wall thickness, and reliable heat dissipation. Proper alignment with core inserts and mold plates is essential to ensure consistent molding quality and long-term mold stability.

Manufacturing Capability & CNC Machining

Senlan Precision operates advanced precision machining facilities equipped with internationally recognized equipment:

• MAKINO (Japan) high-precision CNC machining centers

• HARDINGE (USA) CNC turning machines

• Precision grinding and EDM systems

Machining Capabilities

• Tolerance control down to ±0.002 mm

• Consistent cavity geometry and surface quality

• Stable machining for hardened SKD61 materials

• Process control suitable for complex multi-cavity inserts

Customization & OEM Cooperation Process

All SKD61 cavity inserts are supplied under a Built-to-Print / OEM manufacturing model:

1. Drawing Review & Technical Evaluation

2. Material & Heat Treatment Planning

3. Precision CNC Machining & Finishing

4. Dimensional and Functional Inspection

5. Final Packaging and Export Delivery

Quality Control & Export Experience

• Incoming material inspection and traceability

• In-process dimensional checks at key stages

• Final inspection before shipment

• Experience supplying cavity inserts to international mold makers and packaging tooling manufacturers

Quality control focuses on dimensional accuracy, mold fit, and service life.

Related Products

• Mold Core Inserts for Cap Injection Molds

• Multi-Cavity Mold Components

• Core Pins and Threaded Mold Parts

• Mold Plates and Structural Mold Components

FAQ – Technical & Purchasing

Q1: Are these cavity inserts standard sizes?
No. All cavity inserts are custom-made according to customer drawings.

Q2: Can you supply inserts for multi-cavity cap molds?
Yes. We support cavity inserts for high-cavity and balanced mold systems.

Q3: Is heat treatment included?
Heat treatment is applied based on customer requirements and mold design.

Q4: Can you match existing mold components?
Yes. Inserts can be manufactured to match existing mold structures and tolerances.

Request a Quote

To receive a quotation for SKD61 Plastic Mould Parts Cavity Inserts for Injection Molds, please provide your drawings and technical specifications.

Our engineering team will review your requirements and offer a precision-focused cavity insert solution suitable for stable, high-volume injection molding.