---
title: "Ejector System"
industry: "Fabricated Metal Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:EJECTOR_SYSTEM"
  data_integrity_hash: "3753fa06ddb41fc87bc3d91cff29dbc0"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:EJECTOR_SYSTEM"
  data_source_uri: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/ejector-system.md"
  official_resource_url: "https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/ejector-system"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.0 MPa hydraulic pressure, 0.1-0.5 mm/s ejection velocity, 20-150 kN ejection force"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 2.5
    unit: "MPa"
    consequence: "Seal extrusion failure occurs when hydraulic pressure exceeds the yield strength of nitrile rubber (15 MPa) combined with clearance gap (0.05 mm) creating extrusion pressure of 2.5 MPa; pin buckling follows Euler's critical load formula P_cr = (π²EI)/(KL)² where E=210 GPa (steel), I=πd⁴/64, K=2 (fixed-free), L=pin length"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 3 μm absolute filtration with differential pressure monitoring at 0.3 bar threshold"
  - node_2:
      trigger: "Misalignment exceeding 0.02 mm/mm between ejector plate and die shoe"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision ground guide pillars with H7/g6 fit tolerance and 0.8 μm surface finish"
bom_nodes:
  ejector-pin:
    type: "component"
    urn: "URN:CNFX:ME:EJECTOR_PIN"
    interface_type: "physical-logic-coupled"
  ejector-plate:
    type: "component"
    urn: "URN:CNFX:ME:EJECTOR_PLATE"
    interface_type: "physical-logic-coupled"
  return-pin:
    type: "component"
    urn: "URN:CNFX:ME:RETURN_PIN"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1219-1:2012 (FLUID POWER SYSTEMS AND COMPONENTS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B16.5:2020 (PIPE FLANGES AND FLANGED FITTINGS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 24342:1993 (HYDRAULIC FLUID POWER - SINGLE ROD CYLINDERS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/ejector-system.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c69922e1a6a47176d86feb2613dde247f0f8fc35a25a3ca95ca2bd7a8b412447"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Ejector System

## 1. Technical Definition
A mechanical system within a die set that removes formed parts from the die cavity after the molding or stamping process.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.0 MPa hydraulic pressure, 0.1-0.5 mm/s ejection velocity, 20-150 kN ejection force**. Failure boundary: **Hydraulic pressure exceeding 2.5 MPa causes seal extrusion failure; ejection velocity exceeding 1.0 mm/s induces part deformation; ejection force exceeding 200 kN causes pin buckling**, Mechanism: **Seal extrusion failure occurs when hydraulic pressure exceeds the yield strength of nitrile rubber (15 MPa) combined with clearance gap (0.05 mm) creating extrusion pressure of 2.5 MPa; pin buckling follows Euler's critical load formula P_cr = (π²EI)/(KL)² where E=210 GPa (steel), I=πd⁴/64, K=2 (fixed-free), L=pin length**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level | 8 | Spool valve stiction causing delayed ejection timing | Install 3 μm absolute filtration with differential pressure monitoring at 0.3 bar threshold |
| Misalignment exceeding 0.02 mm/mm between ejector plate and die shoe | 8 | Eccentric loading causing pin scoring and increased friction coefficient from 0.1 to 0.3 | Precision ground guide pillars with H7/g6 fit tolerance and 0.8 μm surface finish |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Programmable Logic Controller (PLC)**, **Die Set Press**  
**Downstream Applications**: Automotive Body Panels, Appliance Housings, Metal Enclosures  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are recommended for ejector systems in metal fabrication?
**A**: Tool steel and alloy steel are recommended for their durability, wear resistance, and ability to withstand high-pressure stamping and molding cycles in metal fabrication.

### Q: How does an ejector system work in a die set?
**A**: After a part is formed in the die cavity, the ejector system uses pins and plates to mechanically push the finished part out, ensuring smooth removal without damage to the part or die.

### Q: What are the key components of an ejector system BOM?
**A**: The essential components include ejector pins for part contact, ejector plates for force distribution, and return pins to reset the system for the next cycle in the manufacturing process.

## 6. Manufacturing Compliance
- ISO 1219-1:2012 (FLUID POWER SYSTEMS AND COMPONENTS)
- ANSI/ASME B16.5:2020 (PIPE FLANGES AND FLANGED FITTINGS)
- DIN 24342:1993 (HYDRAULIC FLUID POWER - SINGLE ROD CYLINDERS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Ejector System](https://cnfx.com/industry/fabricated-metal-product-manufacturing/product/ejector-system)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: EJECTOR_SYSTEM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 00fa2ff5
