---
title: "Rod Assembly"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROD_ASSEMBLY"
  data_integrity_hash: "b05786e45c2e05425a2d6bb156db3646"
  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:ROD_ASSEMBLY"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rod-assembly.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rod-assembly"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "15-300 bar"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 350
    unit: "bar"
    consequence: "Buckling instability due to Euler critical load (P_cr = π²EI/L²) when compressive force exceeds 85 kN at L/d ratio &gt; 20"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination with 15 μm particles exceeding ISO 4406 18/16/13"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 3 μm absolute filtration with differential pressure monitoring at 0.7 bar"
  - node_2:
      trigger: "Misalignment exceeding 0.05 mm/mm between rod and gland bearing"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate spherical self-aligning bearing with ±2° angular compensation"
bom_nodes:
  rod:
    type: "component"
    urn: "URN:CNFX:ME:ROD"
    interface_type: "physical-logic-coupled"
  rod-end:
    type: "component"
    urn: "URN:CNFX:ME:ROD_END"
    interface_type: "physical-logic-coupled"
  wiper-seal:
    type: "component"
    urn: "URN:CNFX:ME:WIPER_SEAL"
    interface_type: "physical-logic-coupled"
  rod-seal:
    type: "component"
    urn: "URN:CNFX:ME:ROD_SEAL"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 286-2:2010 (LIMITS AND FITS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B4.1-1967 (PREFERRED LIMITS AND FITS FOR CYLINDRICAL PARTS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rod-assembly.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e2b6021c48522b48200e6c82efd9980bd83e391ae10e6da8435265bfe2f73cb2"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rod Assembly

## 1. Technical Definition
A structural component of articulation cylinders that transmits force and motion.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-300 bar**. Failure boundary: **Yield strength exceeded at 350 bar (material: AISI 4140 steel, σ_y = 415 MPa)**, Mechanism: **Buckling instability due to Euler critical load (P_cr = π²EI/L²) when compressive force exceeds 85 kN at L/d ratio &gt; 20**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Hydraulic fluid contamination with 15 μm particles exceeding ISO 4406 18/16/13 | 8 | Abrasive wear on rod surface exceeding 0.1 mm depth, causing seal extrusion | Install 3 μm absolute filtration with differential pressure monitoring at 0.7 bar |
| Misalignment exceeding 0.05 mm/mm between rod and gland bearing | 8 | Bending stress concentration at thread root exceeding 600 MPa (S-N curve fatigue limit) | Integrate spherical self-aligning bearing with ±2° angular compensation |

## 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**, **CNC Lathe**, **Surface Grinder**  
**Downstream Applications**: Excavator Arm, Forklift Mast, Industrial Press  

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

### Q: What materials are used in this rod assembly?
**A**: This rod assembly is constructed from chrome-plated steel, providing excellent durability, corrosion resistance, and smooth operation in industrial environments.

### Q: What components are included in the BOM for this rod assembly?
**A**: The bill of materials includes the rod itself, rod end, rod seal, and wiper seal - all essential components for proper force transmission and sealing in articulation cylinders.

### Q: What industrial applications is this rod assembly designed for?
**A**: This rod assembly is specifically engineered for machinery and equipment manufacturing applications, particularly in articulation cylinders where reliable force and motion transmission is critical.

## 6. Manufacturing Compliance
- ISO 286-2:2010 (LIMITS AND FITS)
- ANSI B4.1-1967 (PREFERRED LIMITS AND FITS FOR CYLINDRICAL PARTS)

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

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: ROD_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: da2702ba
