---
title: "Jib/Boom"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:JIBBOOM"
  data_integrity_hash: "b026f9e07cbd72764e96416c64929932"
  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:JIBBOOM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/jibboom.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/jibboom"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 kN·m bending moment at 5-30 m extension"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 355
    unit: "MPa"
    consequence: "Euler buckling instability under compressive loads exceeding critical load P_cr = π²EI/(kL)² where E=210 GPa, I=section moment of inertia, k=0.7 for fixed-free end conditions, L=boom length"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Cyclic loading at 0.5-2 Hz frequency exceeding 10⁶ cycles at stress range Δσ=200 MPa"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Post-weld heat treatment to 650°C for 1 hour to reduce residual stresses below 100 MPa"
  - node_2:
      trigger: "Lateral impact force of 15 kN at boom tip during slewing at 0.5 rad/s"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Moment-resisting connection with 8×M24 Grade 10.9 bolts preloaded to 355 kN each"
bom_nodes:
  boom-foot:
    type: "part"
    urn: "URN:CNFX:ME:BOOM_FOOT"
    interface_type: "physical-logic-coupled"
  boom-head:
    type: "part"
    urn: "URN:CNFX:ME:BOOM_HEAD"
    interface_type: "physical-logic-coupled"
  lattice-structure-or-box-section:
    type: "component"
    urn: "URN:CNFX:ME:LATTICE_STRUCTURE_OR_BOX_SECTION"
    interface_type: "physical-logic-coupled"
  sheave-pinsbushings:
    type: "component"
    urn: "URN:CNFX:ME:SHEAVE_PINSBUSHINGS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4309:2017 - CRANES - WIRE ROPES - CARE, MAINTENANCE, INSTALLATION, EXAMINATION AND DISCARD"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/jibboom.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "559aefcb20d5770d26f46565e0a7d76f27cd994e853b29776ac3d507ef80b242"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Jib/Boom

## 1. Technical Definition
The horizontal or inclined structural member of a jib crane that extends outward to provide reach for lifting and moving loads.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 kN·m bending moment at 5-30 m extension**. Failure boundary: **Yield stress of 355 MPa for S355 structural steel at 1.5×design load factor**, Mechanism: **Euler buckling instability under compressive loads exceeding critical load P_cr = π²EI/(kL)² where E=210 GPa, I=section moment of inertia, k=0.7 for fixed-free end conditions, L=boom length**.

### 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 |
| :--- | :--- | :--- | :--- |
| Cyclic loading at 0.5-2 Hz frequency exceeding 10⁶ cycles at stress range Δσ=200 MPa | 8 | Fatigue crack propagation from weld toe at stress concentration factor K_t=3.2 | Post-weld heat treatment to 650°C for 1 hour to reduce residual stresses below 100 MPa |
| Lateral impact force of 15 kN at boom tip during slewing at 0.5 rad/s | 8 | Plastic hinge formation at boom base connection with rotation exceeding 0.02 rad | Moment-resisting connection with 8×M24 Grade 10.9 bolts preloaded to 355 kN each |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Boom Foot](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/boom-foot.md) `(Standalone System)`
- [Boom Head](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/boom-head.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Electric Hoist**, **End Truck Assembly**, **Runway Beam System**  
**Downstream Applications**: Heavy Machinery Assembly, Warehouse Material Handling Systems, Construction Site Lifting Operations  

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

### Q: What materials are best for jib/boom construction in heavy machinery?
**A**: High-strength steel and alloy steel are preferred for jib/boom construction due to their exceptional durability, load-bearing capacity, and resistance to deformation under heavy industrial use.

### Q: What are the key components in a jib/boom bill of materials (BOM)?
**A**: A standard jib/boom BOM includes the boom foot (base connection), boom head (load attachment point), lattice structure or box section (main framework), and sheave pins/bushings (pulley system components).

### Q: How does the jib/boom design affect crane lifting capacity?
**A**: The jib/boom's structural design—particularly the lattice or box section configuration—directly determines reach, stability, and maximum load capacity by distributing weight efficiently while minimizing deflection during operation.

## 6. Manufacturing Compliance
- ISO 4309:2017 - CRANES - WIRE ROPES - CARE, MAINTENANCE, INSTALLATION, EXAMINATION AND DISCARD

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Jib/Boom](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/jibboom)**

### 🌐 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**: JIBBOOM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9c1e9505
