---
title: "Sheave (Pulley)"
industry: "Other Transport Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SHEAVE_PULLEY"
  data_integrity_hash: "6cb47d43646f2f3022f0de21ee1d659e"
  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:SHEAVE_PULLEY"
  data_source_uri: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/sheave-pulley.md"
  official_resource_url: "https://cnfx.com/industry/other-transport-equipment-manufacturing/product/sheave-pulley"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 kN dynamic load, 0-1000 rpm rotational speed, -40°C to 120°C temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 150
    unit: "°C"
    consequence: "Hertzian contact stress exceeding 800 MPa causing groove deformation, abrasive wear coefficient exceeding 1.5×10⁻⁵ mm³/N·m, fatigue crack propagation at stress intensity factor K₁ &gt; 25 MPa·√m"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Rope misalignment angle exceeding 1.5° from groove centerline"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate laser-aligned mounting brackets with 0.1° angular tolerance and real-time optical alignment monitoring"
  - node_2:
      trigger: "Bearing lubrication failure with oil film thickness &lt; 1 μm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement dual-redundant automatic lubrication system with viscosity sensors and 0.1 mL/min minimum flow rate"
bom_nodes:
  sheave-body:
    type: "component"
    urn: "URN:CNFX:ME:SHEAVE_BODY"
    interface_type: "physical-logic-coupled"
  bearingbushing:
    type: "component"
    urn: "URN:CNFX:ME:BEARINGBUSHING"
    interface_type: "physical-logic-coupled"
  groove-liner:
    type: "component"
    urn: "URN:CNFX:ME:GROOVE_LINER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 4183:1995 - BELT DRIVES - CLASSICAL AND NARROW V-BELTS - GROOVED PULLEYS (SYSTEM BASED ON DATUM WIDTH)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/other-transport-equipment-manufacturing/product/sheave-pulley.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "5a7c7d63d2c49be7774553e953f15b05ff519e769ec9f6c138bee3b5b4bdd1b6"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Sheave (Pulley)

## 1. Technical Definition
A grooved wheel used to guide and support wire rope or cable in lifting and material handling systems.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 kN dynamic load, 0-1000 rpm rotational speed, -40°C to 120°C temperature**. Failure boundary: **Groove wear depth exceeding 10% of rope diameter, bearing temperature exceeding 150°C, rope slip exceeding 3% of nominal speed**, Mechanism: **Hertzian contact stress exceeding 800 MPa causing groove deformation, abrasive wear coefficient exceeding 1.5×10⁻⁵ mm³/N·m, fatigue crack propagation at stress intensity factor K₁ &gt; 25 MPa·√m**.

### 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 |
| :--- | :--- | :--- | :--- |
| Rope misalignment angle exceeding 1.5° from groove centerline | 8 | Accelerated asymmetric groove wear reducing rope contact area by 40% | Integrate laser-aligned mounting brackets with 0.1° angular tolerance and real-time optical alignment monitoring |
| Bearing lubrication failure with oil film thickness &lt; 1 μm | 8 | Rolling element seizure causing rotational resistance torque &gt; 15 N·m | Implement dual-redundant automatic lubrication system with viscosity sensors and 0.1 mL/min minimum flow rate |

## 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**: **Wire Rope Tensioning System**, **Cable Lubrication System**, **Load Monitoring Sensor**  
**Downstream Applications**: Overhead Cranes, Elevator Systems, Marine Winches  

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

### Q: What materials are best for sheaves in heavy-duty transport equipment?
**A**: Cast steel offers excellent strength and wear resistance for most applications, forged steel provides superior toughness for extreme loads, and ductile iron balances durability with cost-effectiveness for many industrial uses.

### Q: How does the groove liner affect sheave performance?
**A**: The groove liner protects both the sheave body and the wire rope by reducing friction and wear. Proper liner material and design extend equipment life, prevent cable damage, and maintain efficient operation in lifting systems.

### Q: What maintenance is required for sheaves in material handling systems?
**A**: Regular inspection for wear, proper lubrication of bearings/bushings, checking groove liners for deterioration, and ensuring correct alignment are essential. Replace components when wear exceeds manufacturer specifications to prevent system failure.

## 6. Manufacturing Compliance
- ISO 4183:1995 - BELT DRIVES - CLASSICAL AND NARROW V-BELTS - GROOVED PULLEYS (SYSTEM BASED ON DATUM WIDTH)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Sheave (Pulley)](https://cnfx.com/industry/other-transport-equipment-manufacturing/product/sheave-pulley)**

### 🌐 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**: SHEAVE_PULLEY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4578e19c
