INDUSTRY COMPONENT

Ejector Pin Hole

A precision hole in a mold cavity insert designed to accommodate ejector pins for part removal after casting.

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Component Specifications

Definition
An ejector pin hole is a critical feature in precision casting mold cavity inserts, engineered to house ejector pins that facilitate the ejection of solidified castings from the mold. These holes are precisely machined to ensure proper alignment, minimal friction, and reliable operation during the ejection cycle, preventing damage to both the casting and the mold.
Working Principle
The ejector pin hole provides a guided pathway for the ejector pin to move linearly, applying force to the casting to separate it from the mold cavity after solidification. It ensures precise alignment and smooth operation, reducing wear and preventing part deformation.
Materials
Typically made from hardened tool steels (e.g., H13, P20, S7) or carbide for high-wear resistance, with surface treatments like nitriding or chrome plating to enhance durability and reduce friction.
Technical Parameters
  • Straightness 0.01 mm per 100 mm
  • Surface Finish Ra 0.4 μm or better
  • Depth Tolerance ±0.01 mm
  • Perpendicularity 0.01 mm to reference plane
  • Diameter Tolerance ±0.005 mm
Standards
ISO 8015, DIN 16760

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Ejector Pin Hole.

ejector pin hole mold cavity insert precision casting mold components ejection system tool steel ISO standards FMEA industrial engineering Ejector Pin Hole in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Precision Casting Mold Cavity Insert

Removable mold component that forms the internal shape of cast metal parts

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Engineering Analysis

Risks & Mitigation
  • Misalignment causing pin binding or breakage
  • Wear leading to increased clearance and ejection issues
  • Contamination from lubricants or debris affecting operation
FMEA Triads
Trigger: Improper machining tolerances
Failure: Pin jamming or excessive wear
Mitigation: Adhere to strict dimensional controls and regular inspection
Trigger: Inadequate material hardness
Failure: Rapid hole deformation
Mitigation: Use hardened tool steels with appropriate heat treatment
Trigger: Poor lubrication
Failure: Increased friction and overheating
Mitigation: Implement a scheduled maintenance and lubrication protocol

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Meets ISO 8015 geometric tolerancing standards
Test Method
Coordinate measuring machine (CMM) inspection, go/no-go gauge testing

Buyer Feedback

★★★★☆ 4.9 / 5.0 (33 reviews)

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Ejector Pin Hole meets all ISO standards."

"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Ejector Pin Hole arrived with full certification."

"Great transparency on the Ejector Pin Hole components. Essential for our Machinery and Equipment Manufacturing supply chain."

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Frequently Asked Questions

What is the primary function of an ejector pin hole?

To guide ejector pins for safe and efficient removal of castings from the mold cavity.

Why is surface finish critical for ejector pin holes?

A smooth surface reduces friction and wear, ensuring consistent ejection and extending mold life.

Can ejector pin holes be repaired if worn?

Yes, through processes like sleeving or re-machining, but prevention via proper material selection and maintenance is preferred.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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