---
title: "Locking Device"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LOCKING_DEVICE"
  data_integrity_hash: "526a7b39abb4d7857123ec6d643fe156"
  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:LOCKING_DEVICE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/locking-device.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/locking-device"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-150 MPa clamping pressure, -40°C to 120°C temperature range"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 450
    unit: "MPa"
    consequence: "Plastic deformation due to cyclic loading exceeding material fatigue limit (S-N curve at 10^7 cycles: 300 MPa for steel)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Thermal expansion mismatch between locking device (CTE: 11.5×10^-6/°C) and shaft (CTE: 12.2×10^-6/°C)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Differential thermal expansion compensation through tapered sleeve design with 0.02 mm/°C compensation factor"
  - node_2:
      trigger: "Vibration-induced fretting at 50-200 Hz resonance frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Anti-fretting coating application (MoS2, 25 μm thickness) with 0.15 friction coefficient"
bom_nodes:
  locking-collar-body:
    type: "component"
    urn: "URN:CNFX:ME:LOCKING_COLLAR_BODY"
    interface_type: "physical-logic-coupled"
  set-screws:
    type: "component"
    urn: "URN:CNFX:ME:SET_SCREWS"
    interface_type: "physical-logic-coupled"
  locking-nuts:
    type: "component"
    urn: "URN:CNFX:ME:LOCKING_NUTS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/locking-device.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "bad1f087e801e9565296063e3584bee25a6db0fc01717afb2f5fd223f490316c"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Locking Device

## 1. Technical Definition
A mechanical component within an end bearing assembly that secures bearing elements in position to prevent axial movement or rotation.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-150 MPa clamping pressure, -40°C to 120°C temperature range**. Failure boundary: **Shear stress exceeding 450 MPa yield strength, axial displacement exceeding 0.05 mm**, Mechanism: **Plastic deformation due to cyclic loading exceeding material fatigue limit (S-N curve at 10^7 cycles: 300 MPa for steel)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Thermal expansion mismatch between locking device (CTE: 11.5×10^-6/°C) and shaft (CTE: 12.2×10^-6/°C) | 8 | Loss of interference fit leading to 0.1 mm radial play | Differential thermal expansion compensation through tapered sleeve design with 0.02 mm/°C compensation factor |
| Vibration-induced fretting at 50-200 Hz resonance frequency | 8 | Surface micro-wear generating 15 μm debris particles | Anti-fretting coating application (MoS2, 25 μm thickness) with 0.15 friction coefficient |

## 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**: **CNC Lathe**, **Heat Treatment Furnace**, **Surface Grinding Machine**  
**Downstream Applications**: Industrial Gearboxes, Conveyor Systems, Heavy-Duty Pumps  

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

### Q: What materials are available for this locking device?
**A**: Our locking devices are manufactured in carbon steel, alloy steel, and stainless steel to suit different environmental conditions and load requirements in machinery applications.

### Q: How does this locking device prevent bearing movement?
**A**: The device uses a locking collar body with set screws and locking nuts to create a secure mechanical clamp around the bearing, preventing both axial movement and rotation within the end bearing assembly.

### Q: What are the main components in the BOM for this product?
**A**: The bill of materials includes the locking collar body, set screws for adjustment and securing, and locking nuts to ensure the assembly remains tight under operational vibrations and loads.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Locking Device](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/locking-device)**

### 🌐 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**: LOCKING_DEVICE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8495b7b4
