---
title: "Main Jacking System"
industry: "Repair and Installation of Machinery and Equipment"
verification_protocol:
  urn: "URN:CNFX:ME:MAIN_JACKING_SYSTEM"
  data_integrity_hash: "ce735e3804c59b1c3ed11ae0ac81afd9"
  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:MAIN_JACKING_SYSTEM"
  data_source_uri: "https://cnfx.com/llms/industry/repair-installation-machinery-equipment/product/main-jacking-system.md"
  official_resource_url: "https://cnfx.com/industry/repair-installation-machinery-equipment/product/main-jacking-system"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "150-350 bar hydraulic pressure, 50-200 kN thrust force, 0.1-1.0 m/min advance rate"
    unit: "kN"
engineering_limits:
  max_safe_operating_point:
    value: 400
    unit: "bar"
    consequence: "Hydraulic fluid cavitation at pressures below 100 bar due to vapor pressure of ISO VG 46 fluid at 40°C (0.008 bar absolute), yielding of AISI 4140 steel components at 415 MPa stress, thermal fatigue in hydraulic cylinders from cyclic 20-80°C temperature swings"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminated hydraulic fluid with particulate &gt;5 μm ISO 4406 code 18/16/13"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 3 μm absolute beta₃=200 filter with differential pressure monitoring at 0.8 bar threshold"
  - node_2:
      trigger: "Misalignment of thrust frame exceeding 0.5 mm/m over 2 m length"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Laser alignment system with 0.1 mm resolution and automatic hydraulic leveling jacks"
bom_nodes:
  hydraulic-jacking-cylinders:
    type: "part"
    urn: "URN:CNFX:ME:HYDRAULIC_JACKING_CYLINDERS"
    interface_type: "physical-logic-coupled"
  hydraulic-power-unit:
    type: "part"
    urn: "URN:CNFX:ME:HYDRAULIC_POWER_UNIT"
    interface_type: "physical-logic-coupled"
  control-system:
    type: "device"
    urn: "URN:CNFX:ME:CONTROL_SYSTEM"
    interface_type: "physical-logic-coupled"
  thrust-ringreaction-structure:
    type: "part"
    urn: "URN:CNFX:ME:THRUST_RINGREACTION_STRUCTURE"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 12100:2010 - SAFETY OF MACHINERY"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B30.1-2020 - JACKS"
    scope: "Verified Engineering Specification"
  - standard: "DIN 743-2:2012 - CALCULATION OF LOAD CAPACITY OF SHAFTS AND AXLES"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/repair-installation-machinery-equipment/product/main-jacking-system.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "0862832d585eb43605adb112ee5f5823e677ec449b2ea2e89acff5bcc54353da"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Main Jacking System

## 1. Technical Definition
The primary hydraulic or mechanical system that generates and applies the forward thrust force to push pipes through the ground during pipe jacking operations.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **150-350 bar hydraulic pressure, 50-200 kN thrust force, 0.1-1.0 m/min advance rate**. Failure boundary: **Hydraulic pressure exceeding 400 bar causes seal extrusion, thrust force exceeding 250 kN causes buckling in 316L stainless steel push rods, advance rate below 0.05 m/min indicates soil lock-up**, Mechanism: **Hydraulic fluid cavitation at pressures below 100 bar due to vapor pressure of ISO VG 46 fluid at 40°C (0.008 bar absolute), yielding of AISI 4140 steel components at 415 MPa stress, thermal fatigue in hydraulic cylinders from cyclic 20-80°C temperature swings**.

### 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 |
| :--- | :--- | :--- | :--- |
| Contaminated hydraulic fluid with particulate &gt;5 μm ISO 4406 code 18/16/13 | 8 | Spool valve stiction causing pressure oscillations ±15% from setpoint | Install 3 μm absolute beta₃=200 filter with differential pressure monitoring at 0.8 bar threshold |
| Misalignment of thrust frame exceeding 0.5 mm/m over 2 m length | 8 | Eccentric loading causing 15% uneven wear on polyurethane rod seals | Laser alignment system with 0.1 mm resolution and automatic hydraulic leveling jacks |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Hydraulic Jacking Cylinders](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hydraulic-jacking-cylinders.md) `(Standalone System)`
- [Hydraulic Power Unit](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hydraulic-power-unit.md) `(Standalone System)`
- [Control System](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/control-system.md) `(Standalone System)`
- [Thrust Ring/Reaction Structure](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/thrust-ringreaction-structure.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Pipe Thrust Bearing**, **Laser Guidance System**  
**Downstream Applications**: Underground Utility Pipeline, Tunnel Lining Segments, Culvert Installation  

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

### Q: What materials are used in the main jacking system for durability?
**A**: The system is built with high-strength alloy steel, chromium-plated hydraulic cylinders, and hardened steel mounting plates to withstand heavy loads and harsh conditions in pipe jacking operations.

### Q: How does the main jacking system generate thrust for pipe installation?
**A**: It uses hydraulic or mechanical systems to create forward thrust force, pushing pipes through the ground efficiently, with components like hydraulic jacking cylinders and a power unit ensuring consistent performance.

### Q: What are the key components included in the main jacking system BOM?
**A**: The bill of materials includes a control system, hydraulic jacking cylinders, hydraulic power unit, and thrust ring/reaction structure, all designed for seamless integration in machinery repair and installation.

## 6. Manufacturing Compliance
- ISO 12100:2010 - SAFETY OF MACHINERY
- ANSI/ASME B30.1-2020 - JACKS
- DIN 743-2:2012 - CALCULATION OF LOAD CAPACITY OF SHAFTS AND AXLES

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Main Jacking System](https://cnfx.com/industry/repair-installation-machinery-equipment/product/main-jacking-system)**

### 🌐 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**: MAIN_JACKING_SYSTEM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 436b2894
