---
title: "Longitudinal Drive System"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LONGITUDINAL_DRIVE_SYSTEM"
  data_integrity_hash: "f92de565f9df732e698ddaff15111aa1"
  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:LONGITUDINAL_DRIVE_SYSTEM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/longitudinal-drive-system.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/longitudinal-drive-system"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-2.0 m/s linear velocity, 0.01-0.5 m/s² acceleration, 0.5-5.0 kN axial load"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 15
    unit: "N"
    consequence: "Ball screw elastic deformation under Hertzian contact stress exceeding 1.2 GPa, linear bearing raceway spalling due to subsurface shear stress exceeding 800 MPa, servo motor permanent magnet demagnetization at temperatures above 150°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Ball screw thermal expansion mismatch (ΔT &gt; 40°C) between screw (α=11.7×10⁻⁶/K) and nut (α=23.6×10⁻⁶/K)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Temperature-compensated ball screw design with Invar alloy inserts (α=1.2×10⁻⁶/K), active cooling system maintaining ΔT &lt; 5°C"
  - node_2:
      trigger: "Servo drive current sensor drift exceeding 2% full scale due to Hall effect sensor thermal coefficient of 0.1%/°C"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dual-redundant current sensing with temperature-compensated fluxgate sensors (accuracy ±0.5%), adaptive current control with Kalman filtering"
bom_nodes:
  drive-motor:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_MOTOR"
    interface_type: "physical-logic-coupled"
  lead-screw-assembly:
    type: "part"
    urn: "URN:CNFX:ME:LEAD_SCREW_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  linear-guide-rails:
    type: "part"
    urn: "URN:CNFX:ME:LINEAR_GUIDE_RAILS"
    interface_type: "physical-logic-coupled"
  position-encoder:
    type: "part"
    urn: "URN:CNFX:ME:POSITION_ENCODER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 (MECHANICAL VIBRATION - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK - TOLERANCES AND MEASURING METHODS FOR UNASSEMBLED SPUR AND HELICAL GEARS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 5480-1:2006 (INVOLUTE SPLINES BASED ON REFERENCE DIAMETERS - PART 1: PRINCIPLES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/longitudinal-drive-system.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "89eccde109383898cf41d5c7432a93f314547bbc21a7803bbcb81aa5d4ccd4dc"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Longitudinal Drive System

## 1. Technical Definition
A mechanical system that provides controlled linear movement along the length axis of a treatment couch.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-2.0 m/s linear velocity, 0.01-0.5 m/s² acceleration, 0.5-5.0 kN axial load**. Failure boundary: **Ball screw pitch error exceeds 50 μm/m, linear guideway preload drops below 15 N, servo motor torque ripple exceeds 5% rated torque**, Mechanism: **Ball screw elastic deformation under Hertzian contact stress exceeding 1.2 GPa, linear bearing raceway spalling due to subsurface shear stress exceeding 800 MPa, servo motor permanent magnet demagnetization at temperatures above 150°C**.

### 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 |
| :--- | :--- | :--- | :--- |
| Ball screw thermal expansion mismatch (ΔT &gt; 40°C) between screw (α=11.7×10⁻⁶/K) and nut (α=23.6×10⁻⁶/K) | 8 | Increased backlash exceeding 100 μm, positioning accuracy degradation beyond ±0.1 mm | Temperature-compensated ball screw design with Invar alloy inserts (α=1.2×10⁻⁶/K), active cooling system maintaining ΔT &lt; 5°C |
| Servo drive current sensor drift exceeding 2% full scale due to Hall effect sensor thermal coefficient of 0.1%/°C | 8 | Velocity control loop instability, position overshoot exceeding 10% of commanded move | Dual-redundant current sensing with temperature-compensated fluxgate sensors (accuracy ±0.5%), adaptive current control with Kalman filtering |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Drive Motor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-motor.md) `(Standalone System)`
- [Lead Screw Assembly](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/lead-screw-assembly.md) `(Standalone System)`
- [Linear Guide Rails](https://cnfx.com/llms/industry/wood-product-manufacturing/product/linear-guide-rails.md) `(Standalone System)`
- [Position Encoder](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/position-encoder.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Linear Motion Controller**, **Power Supply Unit**, **Position Feedback Encoder**  
**Downstream Applications**: Medical Treatment Couches, Industrial Inspection Tables, Material Handling Platforms  

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

### Q: What are the key components of the Longitudinal Drive System?
**A**: The system includes a Drive Motor, Lead Screw Assembly, Linear Guide Rails, and Position Encoder for precise controlled movement.

### Q: What materials are used in this drive system?
**A**: Constructed from durable Aluminum alloy, Stainless steel, and Engineering plastics for optimal performance and longevity.

### Q: What applications is this longitudinal drive system designed for?
**A**: Specifically engineered for treatment couches in medical and industrial settings requiring controlled linear movement along the length axis.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (MECHANICAL VIBRATION - BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT (RIGID) STATE)
- ANSI/AGMA 2000-A88 (GEAR CLASSIFICATION AND INSPECTION HANDBOOK - TOLERANCES AND MEASURING METHODS FOR UNASSEMBLED SPUR AND HELICAL GEARS)
- DIN 5480-1:2006 (INVOLUTE SPLINES BASED ON REFERENCE DIAMETERS - PART 1: PRINCIPLES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Longitudinal Drive System](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/longitudinal-drive-system)**

### 🌐 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**: LONGITUDINAL_DRIVE_SYSTEM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: a1f5120a
