Pin Shaft: Length Range 50-300 mm, Diameter Tolerance ±0.005 mm

Component Specifications

Definition

A pin shaft is a critical cylindrical component in precision casting mold ejector systems, designed to apply controlled force for separating cast parts from molds. It features precise dimensional tolerances, surface finishes, and mechanical properties to withstand repeated thermal cycling and mechanical stress during high-volume production.

Working Principle

The pin shaft operates within an ejector plate assembly, transmitting linear force from hydraulic or mechanical actuators to specific points on the mold cavity. During the casting cycle, it remains stationary until the ejection phase, when it advances to push the solidified casting out of the mold without damaging delicate features.

Materials

Typically made from high-grade tool steels (e.g., H13, D2, or M2) or carbide alloys for wear resistance and thermal stability. Surface treatments like nitriding or chrome plating may be applied to enhance durability and reduce friction.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	58-62 HRC
Length Range	50-300 mm
Straightness	≤ 0.01 mm per 100 mm
Surface Finish	Ra ≤ 0.4 μm
Diameter Tolerance	±0.005 mm

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 2768, DIN 7150

Parent Products

This component is used in the following industrial products

Precision Casting Mold Ejector Pin

A precision-engineered cylindrical component used in metal casting molds to forcibly eject solidified castings from mold cavities.

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Engineering Analysis

Risks & Mitigation

Wear and deformation from thermal cycling
Misalignment causing part damage
Corrosion in humid environments

FMEA Triads

Trigger: Insufficient hardness or surface treatment
Failure: Premature wear leading to dimensional inaccuracy
Mitigation: Use hardened tool steels with protective coatings and implement regular inspection schedules.

Trigger: Improper installation or alignment
Failure: Binding or bending during operation
Mitigation: Follow precise mounting procedures and use alignment tools during assembly.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Meets ISO 2768-m for general tolerances and specific customer drawings

Test Method

Dimensional verification with CMM, hardness testing per ASTM E18, and surface roughness measurement per ISO 4287

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Pin Shaft

Manufacturer profiles associated with Pin Shaft.

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Frequently Asked Questions

What is the primary function of a pin shaft in casting molds?

It provides precise linear motion to eject finished castings from molds without causing defects or damage.

How do I select the right material for a pin shaft?

Choose based on operating temperature, wear resistance needs, and compatibility with the casting material; H13 steel is common for aluminum casting, while carbide suits high-wear applications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Pin Shaft