---
title: "Hydraulic Quick Coupler"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:HYDRAULIC_QUICK_COUPLER"
  data_integrity_hash: "3ec7d652550a5024ff68f7f175d9bbef"
  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:HYDRAULIC_QUICK_COUPLER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hydraulic-quick-coupler.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/hydraulic-quick-coupler"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-350 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 420
    unit: "bar"
    consequence: "Material yield strength exceeded at 420 bar (SAE 1008 steel, 285 MPa yield), O-ring compression set at 120°C (NBR material, 70 Shore A hardness)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination exceeding 15 μm in hydraulic fluid (ISO 4406 18/16/13)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate 10 μm absolute filtration with differential pressure sensor (0.3 bar trigger)"
  - node_2:
      trigger: "Cyclic pressure surges from excavator boom deceleration (peak 1.5x nominal pressure)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hardened steel seat (60 HRC) with radiused transition geometry (R=0.5 mm minimum)"
bom_nodes:
  male-half:
    type: "component"
    urn: "URN:CNFX:ME:MALE_HALF"
    interface_type: "physical-logic-coupled"
  female-half:
    type: "part"
    urn: "URN:CNFX:ME:FEMALE_HALF"
    interface_type: "physical-logic-coupled"
  locking-balls:
    type: "component"
    urn: "URN:CNFX:ME:LOCKING_BALLS"
    interface_type: "physical-logic-coupled"
  poppet-valve:
    type: "part"
    urn: "URN:CNFX:ME:POPPET_VALVE"
    interface_type: "physical-logic-coupled"
  release-sleeve:
    type: "component"
    urn: "URN:CNFX:ME:RELEASE_SLEEVE"
    interface_type: "physical-logic-coupled"
  o-ringsseals:
    type: "component"
    urn: "URN:CNFX:ME:O_RINGSSEALS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hydraulic-quick-coupler.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "07b79b867765ca87243a19de4b9d680ad8818f5a1d88056b88e0454a3f80cb0c"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Hydraulic Quick Coupler

## 1. Technical Definition
A hydraulic connector that enables rapid attachment and detachment of hydraulic tools to mini excavators without fluid leakage.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-350 bar**. Failure boundary: **420 bar burst pressure, -40°C to 120°C temperature range**, Mechanism: **Material yield strength exceeded at 420 bar (SAE 1008 steel, 285 MPa yield), O-ring compression set at 120°C (NBR material, 70 Shore A hardness)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Particulate contamination exceeding 15 μm in hydraulic fluid (ISO 4406 18/16/13) | 8 | Spool valve jamming in open position | Integrate 10 μm absolute filtration with differential pressure sensor (0.3 bar trigger) |
| Cyclic pressure surges from excavator boom deceleration (peak 1.5x nominal pressure) | 8 | Popper seat fatigue cracking at 10⁶ cycles (Goodman diagram limit) | Hardened steel seat (60 HRC) with radiused transition geometry (R=0.5 mm minimum) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Female Half](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/female-half.md) `(Standalone System)`
- [Poppet Valve](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/poppet-valve.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Pressure Testing Station**, **Hydraulic Fluid Filtration System**  
**Downstream Applications**: Mini Excavator Hydraulic Systems, Hydraulic Breaker Attachments, Hydraulic Auger Attachments  

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

### Q: What materials are used in this hydraulic quick coupler?
**A**: This coupler is constructed from carbon steel, stainless steel, and brass components for durability and corrosion resistance in demanding machinery applications.

### Q: How does this coupler prevent hydraulic fluid leakage?
**A**: It features a poppet valve system and high-quality O-rings/seals that automatically seal both halves upon disconnection, ensuring zero fluid loss during tool changes.

### Q: What tools can be connected using this hydraulic quick coupler?
**A**: It's designed for rapid attachment of various hydraulic tools to mini excavators, including breakers, augers, grapples, and other compatible hydraulic attachments.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Hydraulic Quick Coupler](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/hydraulic-quick-coupler)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **6** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: HYDRAULIC_QUICK_COUPLER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: a646890a
