---
title: "Main Bending Roller"
industry: "Other Transport Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAIN_BENDING_ROLLER"
  data_integrity_hash: "2cd47b76398fbe8fbdeafba2c55678ed"
  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_BENDING_ROLLER"
  data_source_uri: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/main-bending-roller.md"
  official_resource_url: "https://cnfx.com/industry/other-transport-equipment-manufacturing/product/main-bending-roller"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "150-350 kN bending force, 0.5-2.0 rpm rotational speed, 20-80°C operating temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 450
    unit: "MPa"
    consequence: "Cyclic plastic deformation leading to low-cycle fatigue (Coffin-Manson relationship), Hertzian contact stress exceeding 1.5 GPa causing subsurface cracking, thermal gradient-induced residual stresses exceeding 300 MPa"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic pressure surge exceeding 35 MPa due to valve malfunction"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Pressure relief valve with 30 MPa cracking pressure and 5 ms response time"
  - node_2:
      trigger: "Abrasive particle contamination (ISO 4406 18/16/13) in lubricant"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-stage filtration system with 3 μm absolute rating and magnetic particle trap"
bom_nodes:
  roller-shaft:
    type: "component"
    urn: "URN:CNFX:ME:ROLLER_SHAFT"
    interface_type: "physical-logic-coupled"
  roller-shellbody:
    type: "component"
    urn: "URN:CNFX:ME:ROLLER_SHELLBODY"
    interface_type: "physical-logic-coupled"
  bearing-journals:
    type: "component"
    urn: "URN:CNFX:ME:BEARING_JOURNALS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1219-2:2012 (FLUID POWER SYSTEMS AND COMPONENTS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B11.0-2020 (SAFETY OF MACHINERY)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 8586:2003 (FORMING MACHINES - BENDING AND STRAIGHTENING MACHINES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/main-bending-roller.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "14f5d2e9756bafac1c7043fb12187995e23ff53c9c3e8ce733042b4e7a837b26"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Main Bending Roller

## 1. Technical Definition
The primary cylindrical component that applies bending force to marine hull plates during the forming process.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **150-350 kN bending force, 0.5-2.0 rpm rotational speed, 20-80°C operating temperature**. Failure boundary: **Material yield strength exceeded at 450 MPa stress, surface temperature exceeds 120°C causing thermal softening, deflection exceeds 0.15 mm/m length**, Mechanism: **Cyclic plastic deformation leading to low-cycle fatigue (Coffin-Manson relationship), Hertzian contact stress exceeding 1.5 GPa causing subsurface cracking, thermal gradient-induced residual stresses exceeding 300 MPa**.

### 2.1 Analytical Physics Model
Governed by the **Tractive Power & Resistance Model**:

> **Primary Equation**: $P = \frac{F \cdot v}{\eta}$  
> **Engineering Impact**: Ensures motor torque capacity exceeds operational inertia.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| F | Total Tractive Resistance | Engineering Constant |
| v | Belt Speed | Engineering Constant |
| \eta | Efficiency | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Hydraulic pressure surge exceeding 35 MPa due to valve malfunction | 8 | Roller shaft permanent deformation exceeding 0.3 mm radial runout | Pressure relief valve with 30 MPa cracking pressure and 5 ms response time |
| Abrasive particle contamination (ISO 4406 18/16/13) in lubricant | 8 | Surface pitting and spalling with material loss exceeding 0.1 mm depth | Dual-stage filtration system with 3 μm absolute rating and magnetic particle trap |

## 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**: **Plate Handling System**, **Hydraulic Power Unit**, **CNC Control System**  
**Downstream Applications**: Ship Hull Sections, Marine Structural Components, Pressure Vessel Segments  

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

### Q: What is the primary function of the main bending roller in marine manufacturing?
**A**: The main bending roller applies controlled bending force to marine hull plates during the forming process, shaping steel plates to precise curvature specifications for ship hull construction.

### Q: Why is forged alloy steel used for this bending roller?
**A**: Forged alloy steel provides exceptional strength, durability, and resistance to deformation under high pressure, ensuring consistent performance and longevity in demanding marine manufacturing environments.

### Q: What maintenance is required for the main bending roller components?
**A**: Regular inspection of bearing journals for wear, lubrication of roller shaft assemblies, and monitoring of roller shell surface integrity are essential maintenance practices to ensure optimal performance and prevent downtime.

## 6. Manufacturing Compliance
- ISO 1219-2:2012 (FLUID POWER SYSTEMS AND COMPONENTS)
- ANSI B11.0-2020 (SAFETY OF MACHINERY)
- DIN 8586:2003 (FORMING MACHINES - BENDING AND STRAIGHTENING MACHINES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Main Bending Roller](https://cnfx.com/industry/other-transport-equipment-manufacturing/product/main-bending-roller)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: MAIN_BENDING_ROLLER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: d295a342
