Precision-Ground Mold Alignment Pins & Bushings | Ra 0.6 Surface Finish

Product Overview

High accuracy mold alignment pins and bushings are critical injection mould components used to ensure precise positioning and repeatable closing accuracy between core and cavity plates. Senlan Precision manufactures custom alignment pins and bushings according to customer drawings, with controlled surface roughness within Ra 0.6, supporting stable mold operation in multi-cavity and high-cycle injection moulding environments.

Key Features & Advantages

• Precision alignment pins and bushings for injection mould systems

• Surface roughness controlled within Ra 0.6 on working surfaces

• High dimensional accuracy for consistent mold closing alignment

• Reduced wear between pin and bushing during long production runs

• Suitable for multi-cavity and high-output mould configurations

• Stable concentricity and fit for repeatable mold performance

• Built-to-Print manufacturing based strictly on customer drawings

Applications / Industry Use

• Plastic bottle and packaging injection molds

• Bottle cap, closure, and dispensing system molds

• Medical consumables and syringe mould tooling

• Cosmetic and daily packaging mould assemblies

• Precision multi-cavity injection mould systems

Mold Structure & Design Description

Alignment pins and bushings are installed between moving and fixed mold plates to ensure accurate mold closing and cavity alignment. Controlled surface roughness within Ra 0.6 reduces friction and wear while maintaining stable guidance. Precise tolerance control ensures consistent alignment, minimizes flash risk, and supports long mold service life in high-cycle production environments.

Manufacturing Capability & CNC Machining

Senlan Precision manufactures mold alignment pins and bushings using high-precision CNC machining and grinding processes to achieve stable dimensional control and surface quality.

Manufacturing capabilities include:

• CNC turning and milling for pin and bushing geometry

• Precision grinding for concentricity and straightness

• Surface roughness control within Ra 0.6

• Tight tolerance control for mold alignment components

• Batch consistency for multi-cavity mold applications

High-precision machining is supported by equipment from MAKINO and HARDINGE, ensuring repeatable accuracy and stable surface finish.

Custom Development / OEM Cooperation Process

1. Customer provides 2D drawings or 3D CAD models

2. Engineering review of tolerance and surface requirements

3. CNC machining and precision grinding

4. In-process dimensional inspection

5. Final quality verification

6. Export packaging and shipment

All components are produced under a Built-to-Print OEM model.

Quality Control & Export Experience

• Incoming material inspection

• In-process dimensional and surface roughness measurement

• Final inspection before shipment

• Stable quality control for batch and long-term supply

• Extensive experience supporting international mold manufacturers

Related Products

• Injection mold guide pins and guide bushings

• Precision mold core pins and sleeves

• Multi-cavity mold alignment components

• Custom CNC machined mold parts

• Mold wear and guidance components

FAQ – Technical & Purchasing

Q1: Can surface roughness Ra 0.6 be guaranteed on working areas?
Yes. Surface roughness is controlled through precision grinding and verified during inspection.

Q2: Are these alignment pins and bushings standard or custom?
All parts are custom-manufactured according to customer drawings.

Q3: Are they suitable for high-cavity injection molds?
Yes. They are designed for stable alignment in multi-cavity and high-cycle mould systems.

Q4: What information is required for quotation?
Technical drawings, material specifications, tolerances, surface roughness requirements, and order quantity.

Request a Quote

Please submit your drawings and technical requirements to receive a professional quotation for custom mold alignment pins and bushings.
Our engineering team will support your injection mould project with precise, stable, and repeatable manufacturing solutions.

Equipment