---
title: "Control Handle"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CONTROL_HANDLE"
  data_integrity_hash: "3da68c864858cab96194b5832e25d58c"
  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:CONTROL_HANDLE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/control-handle.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/control-handle"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-2.5 Nm torque, 15-35 mm displacement, 0.1-0.5 MPa grip pressure"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.0
    unit: "Nm"
    consequence: "Fatigue failure at stress concentration points (notch factor Kt=2.8) due to cyclic loading at 0.5-2 Hz frequency, exceeding endurance limit of 110 MPa for 6061-T6 aluminum"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Repeated torque application exceeding 2.5 Nm at 2 Hz frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Redesign with radius fillet (r=5mm) to reduce stress concentration to Kt=1.8, implement torque limiter at 2.2 Nm"
  - node_2:
      trigger: "Contaminant ingress (ISO 4406 18/16/13 particle count) into ball bearing mechanism"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP67 sealed bearing housing with labyrinth seal, install 10μm filtration in lubrication system"
bom_nodes:
  grip:
    type: "component"
    urn: "URN:CNFX:ME:GRIP"
    interface_type: "physical-logic-coupled"
  shaft:
    type: "component"
    urn: "URN:CNFX:ME:SHAFT"
    interface_type: "physical-logic-coupled"
  mounting-bracket:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_BRACKET"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "CE MARKING: DIRECTIVE 2006/42/EC ON MACHINERY SAFETY"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/control-handle.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "5cea89a43922327f58aa772b3261c6f79fc7e01900d4b08e92efade6220d9214"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Control Handle

## 1. Technical Definition
Manual control interface for operating concrete screed equipment

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-2.5 Nm torque, 15-35 mm displacement, 0.1-0.5 MPa grip pressure**. Failure boundary: **3.0 Nm torque (yield point of 6061-T6 aluminum), 40 mm displacement (mechanical stop limit), 0.8 MPa grip pressure (skin compression threshold)**, Mechanism: **Fatigue failure at stress concentration points (notch factor Kt=2.8) due to cyclic loading at 0.5-2 Hz frequency, exceeding endurance limit of 110 MPa for 6061-T6 aluminum**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Repeated torque application exceeding 2.5 Nm at 2 Hz frequency | 8 | Fatigue crack initiation at handle-shaft interface (stress concentration factor 3.2) | Redesign with radius fillet (r=5mm) to reduce stress concentration to Kt=1.8, implement torque limiter at 2.2 Nm |
| Contaminant ingress (ISO 4406 18/16/13 particle count) into ball bearing mechanism | 8 | Increased rolling resistance from 0.002 to 0.015 friction coefficient, leading to binding at 25° rotation | IP67 sealed bearing housing with labyrinth seal, install 10μm filtration in lubrication system |

## 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**: **Concrete Screed Machine**, **Concrete Mixer Truck**, **Concrete Vibrator**  
**Downstream Applications**: Level Concrete Slabs, Smooth Concrete Surfaces, Prepared Concrete Floors  

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

### Q: What materials are used in this control handle for durability?
**A**: This control handle is constructed from high-grade steel for structural strength, impact-resistant plastic for the grip components, and rubber elements for secure handling and vibration dampening in concrete screed applications.

### Q: How does this handle interface with concrete screed equipment?
**A**: The handle features a standardized mounting bracket and shaft system designed for direct attachment to concrete screed machinery, providing manual control over leveling and finishing operations with precise ergonomic input.

### Q: Can this control handle be used as a replacement part for existing screed machines?
**A**: Yes, this control handle is engineered as a compatible replacement component for many concrete screed models, with its BOM including grip, mounting bracket, and shaft designed to match common industrial specifications in machinery manufacturing.

## 6. Manufacturing Compliance
- CE MARKING: DIRECTIVE 2006/42/EC ON MACHINERY SAFETY

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Control Handle](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/control-handle)**

### 🌐 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**: CONTROL_HANDLE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 84c9e959
