STAVAX ESR (AISI 420) Mold Components | Precision Core Inserts & Sleeve Bush Sets

Product Overview

The STAVAX ESR mold core insert and sleeve bush set from Senlan Precision is manufactured for high-precision plastic injection molding applications requiring excellent corrosion resistance, surface polishability, and dimensional stability. Using ESR-grade STAVAX stainless mold steel, these components are designed for long service life and consistent molding quality in demanding production environments.

Key Features & Technical Advantages

• STAVAX ESR Stainless Mold Steel
  Offers high corrosion resistance, uniform microstructure, and stable hardness distribution, suitable for plastic molding applications with strict surface requirements.

• Polished Surface Treatment
  Precision polishing improves cavity surface quality, reduces material adhesion, and supports consistent molded part appearance.

• Core Insert & Sleeve Bush Matched Set
  Manufactured and inspected as assembly-matched components to ensure accurate alignment and smooth mold operation.

• High Dimensional Accuracy
  CNC machining and precision grinding ensure tight tolerances and reliable fit within multi-cavity mold systems.

• Built-to-Print / OEM Production
  All parts are manufactured strictly according to customer drawings, tolerances, and technical specifications.

Application Scenarios / Industry Applications

• Plastic injection molding cavity systems

• Packaging mold tooling

• Bottle cap and closure molds

• Medical packaging and syringe molds

• Multi-cavity and high-cycle injection molds

These components are commonly used in applications where surface quality, corrosion resistance, and mold longevity are critical.

Mold Structure & Design Explanation

Mold core inserts define the internal geometry of molded parts, while sleeve bushes provide guidance and support for moving core components.
When supplied as a matched set, they ensure:

• Accurate cavity positioning

• Stable movement during mold opening and closing

• Reduced wear between mating components

• Consistent molding performance over extended production cycles

The combination of STAVAX ESR material and precision polishing supports high-quality plastic molding with minimal surface defects.

Manufacturing Capability & CNC Machining Capacity

Senlan Precision operates advanced machining and finishing equipment, including:

• Japan MAKINO high-precision CNC machining centers

• USA HARDINGE CNC turning and precision grinding machines

Core manufacturing processes include:

• CNC milling and turning

• Precision grinding

• Controlled heat treatment (as required)

• Surface polishing

• Assembly fit verification and inspection

Typical capability:

• Dimensional tolerance: ±0.01 mm (or per drawing)

• Surface finish: controlled according to molding requirements

Custom Development / OEM Cooperation Process

1. Review of customer drawings and technical requirements

2. Material and surface treatment confirmation

3. Precision CNC machining and grinding

4. Polishing and surface quality inspection

5. Assembly matching and functional verification

6. Final inspection, documentation, and export packaging

This process supports new mold manufacturing, mold refurbishment, and replacement core components.

Quality Control & Export Experience

• ISO9001 quality management system

• Incoming material inspection and traceability

• In-process dimensional and surface quality control

• Final inspection prior to shipment

• Stable export experience serving international mold makers and OEM customers

Inspection reports and material certificates can be provided upon request.

Related Products

• Precision Mold Core Inserts

• Injection Mold Cavities

• Ejector Pins and Sleeves

• Mold Sliders and Wear Components

• Custom CNC Machined Mold Parts

Frequently Asked Questions (FAQ)

Q1: Are these mold core inserts standard parts?
A: No. All components are custom-made according to customer drawings and specifications.

Q2: Why choose STAVAX ESR material?
A: STAVAX ESR provides excellent corrosion resistance, polishability, and stable mechanical properties for plastic injection molds.

Q3: Can core inserts and sleeve bushes be supplied as matched sets?
A: Yes. Components can be supplied as assembly-matched sets to ensure proper fit and alignment.

Q4: What industries typically use these parts?
A: Packaging molds, medical packaging molds, and other precision plastic injection molding applications.

Request a Quotation

For STAVAX ESR mold core inserts, sleeve bush sets, or other custom plastic injection mold components, please contact Senlan Precision with your drawings and technical requirements.
Our engineering team will provide a detailed technical evaluation and quotation.