---
title: "Motor Grader"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MOTOR_GRADER"
  data_integrity_hash: "4c9419cfbcd2c7b5386a2850891d127b"
  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:MOTOR_GRADER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/motor-grader.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/motor-grader"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 MPa hydraulic pressure, 1500-2500 RPM engine speed"
    unit: "meters"
engineering_limits:
  max_safe_operating_point:
    value: 3.2
    unit: "MPa"
    consequence: "Hydraulic fluid cavitation at pump inlet when pressure drops below 0.3 MPa absolute, blade structural fatigue from cyclic loading exceeding 250 kN·m bending moment"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate 3 μm absolute filtration with differential pressure monitoring at 0.15 MPa warning threshold"
  - node_2:
      trigger: "Thermal stress from 200°C differential between hydraulic reservoir and ambient during cold start"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement pre-heating system maintaining fluid at 40°C minimum with PTC thermistor control"
bom_nodes:
  blade:
    type: "component"
    urn: "URN:CNFX:ME:BLADE"
    interface_type: "physical-logic-coupled"
  moldboard:
    type: "component"
    urn: "URN:CNFX:ME:MOLDBOARD"
    interface_type: "physical-logic-coupled"
  circle:
    type: "component"
    urn: "URN:CNFX:ME:CIRCLE"
    interface_type: "physical-logic-coupled"
  scarifier:
    type: "part"
    urn: "URN:CNFX:ME:SCARIFIER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 50001:2018 - ENERGY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "DIN EN 474-6:2022 - EARTH-MOVING MACHINERY - SAFETY - PART 6: REQUIREMENTS FOR GRADERS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/motor-grader.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "96475d58a114e6a08ec41f94892b6f63fa8ae69fd969015d2532bc3b9c82b830"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Motor Grader

## 1. Technical Definition
A heavy-duty construction machine with a long blade used to create flat surfaces.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 MPa hydraulic pressure, 1500-2500 RPM engine speed**. Failure boundary: **Hydraulic pressure exceeding 3.2 MPa causes seal extrusion, blade tilt mechanism failure at &gt;15° deviation from horizontal plane**, Mechanism: **Hydraulic fluid cavitation at pump inlet when pressure drops below 0.3 MPa absolute, blade structural fatigue from cyclic loading exceeding 250 kN·m bending moment**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | 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 cleanliness level | 8 | Servo valve spool sticking causing uncontrolled blade movement | Integrate 3 μm absolute filtration with differential pressure monitoring at 0.15 MPa warning threshold |
| Thermal stress from 200°C differential between hydraulic reservoir and ambient during cold start | 8 | Hydraulic hose delamination and seal hardening leading to fluid leakage | Implement pre-heating system maintaining fluid at 40°C minimum with PTC thermistor control |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Heavy-Duty Tractor**, **Water Truck**, **Compactor**  
**Downstream Applications**: Road Base Layer, Graded Construction Site, Landscaped Surface  

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

### Q: What are the main components of a motor grader?
**A**: Key components include the blade, moldboard, circle, and scarifier, all constructed from high-strength and alloy steel for durability.

### Q: What specifications should I consider when selecting a motor grader?
**A**: Important specs include blade length (in meters), engine power (in kilowatts), and operating weight (in kilograms) to match your project requirements.

### Q: What industries commonly use motor graders?
**A**: Primarily used in construction, road building, and site preparation within the machinery and equipment manufacturing industry for creating level surfaces.

## 6. Manufacturing Compliance
- ISO 50001:2018 - ENERGY MANAGEMENT SYSTEMS
- DIN EN 474-6:2022 - EARTH-MOVING MACHINERY - SAFETY - PART 6: REQUIREMENTS FOR GRADERS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Motor Grader](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/motor-grader)**

### 🌐 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**: MOTOR_GRADER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 525438b1
