---
title: "Backhoe Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BACKHOE_ASSEMBLY"
  data_integrity_hash: "236a189b43489626f063db0c5b6e2f8c"
  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:BACKHOE_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/backhoe-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/backhoe-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "Hydraulic pressure: 17.2-20.7 MPa (2500-3000 psi), Swing torque: 15-25 kN·m, Digging force: 35-55 kN"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 24.1
    unit: "MPa"
    consequence: "Hydraulic fluid cavitation at pump suction due to NPSH &lt; 2 m, bending fatigue at boom-pivot weld toe (stress concentration factor Kt=3.2), abrasive wear of bucket teeth exceeding 400 HB hardness differential"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 particle count"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10 μm absolute beta₃≥200 filter with pressure differential monitoring"
  - node_2:
      trigger: "Cyclic torsional loading at 0.5-2 Hz exceeding 22 kN·m swing torque"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Replace standard bearing with four-point contact ball bearing (C=150 kN dynamic load rating)"
bom_nodes:
  boom:
    type: "part"
    urn: "URN:CNFX:ME:BOOM"
    interface_type: "physical-logic-coupled"
  dipper-stick:
    type: "component"
    urn: "URN:CNFX:ME:DIPPER_STICK"
    interface_type: "physical-logic-coupled"
  bucket:
    type: "part"
    urn: "URN:CNFX:ME:BUCKET"
    interface_type: "physical-logic-coupled"
  hydraulic-cylinders:
    type: "part"
    urn: "URN:CNFX:ME:HYDRAULIC_CYLINDERS"
    interface_type: "physical-logic-coupled"
  pivot-pins-and-bushings:
    type: "component"
    urn: "URN:CNFX:ME:PIVOT_PINS_AND_BUSHINGS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - MACHINERY DIRECTIVE 2006/42/EC"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/backhoe-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "7bf834fab9fa5aa51006536b0cec6ed5b261bfa2131549a5ca24badea665e748"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Backhoe Assembly

## 1. Technical Definition
The integrated assembly that forms the digging and material handling mechanism of a backhoe loader.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Hydraulic pressure: 17.2-20.7 MPa (2500-3000 psi), Swing torque: 15-25 kN·m, Digging force: 35-55 kN**. Failure boundary: **Hydraulic pressure exceeding 24.1 MPa (3500 psi) causes cylinder seal extrusion, swing bearing fatigue at 30 kN·m cyclic loading, boom stress concentration exceeding 450 MPa yield strength**, Mechanism: **Hydraulic fluid cavitation at pump suction due to NPSH &lt; 2 m, bending fatigue at boom-pivot weld toe (stress concentration factor Kt=3.2), abrasive wear of bucket teeth exceeding 400 HB hardness differential**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | 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 particle count | 8 | Proportional valve spool sticking causing erratic boom movement | Install 10 μm absolute beta₃≥200 filter with pressure differential monitoring |
| Cyclic torsional loading at 0.5-2 Hz exceeding 22 kN·m swing torque | 8 | Swing bearing raceway spalling after 2×10⁶ load cycles | Replace standard bearing with four-point contact ball bearing (C=150 kN dynamic load rating) |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Boom](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/boom.md) `(Standalone System)`
- [Bucket](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/bucket.md) `(Standalone System)`
- [Hydraulic Cylinders](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hydraulic-cylinders.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **Hydraulic Test Bench**, **Welding Positioner**  
**Downstream Applications**: Backhoe Loader, Excavator Attachment, Material Handling Equipment  

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

### Q: What materials are used in your backhoe assemblies?
**A**: Our backhoe assemblies are constructed from high-strength steel for maximum durability and performance in demanding industrial applications.

### Q: What components are included in a complete backhoe assembly?
**A**: A complete assembly includes the boom, dipper stick, bucket, hydraulic cylinders, and all necessary pivot pins and bushings for full functionality.

### Q: Are your backhoe assemblies compatible with different loader models?
**A**: Yes, we manufacture assemblies with standardized mounting points and specifications to ensure compatibility with most industrial backhoe loader models.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - MACHINERY DIRECTIVE 2006/42/EC

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Backhoe Assembly](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/backhoe-assembly)**

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

> **Reference ID**: BACKHOE_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f72e9278
