---
title: "Linear guide / Rails"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LINEAR_GUIDE_RAILS"
  data_integrity_hash: "edff4fd6c18f56a190e83a9d945e7106"
  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:LINEAR_GUIDE_RAILS"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/linear-guide-rails.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/linear-guide-rails"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 m/s linear velocity, -20°C to 80°C ambient temperature, 0.5-50 kN load capacity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 2.5
    unit: "GPa"
    consequence: "Hertzian contact fatigue at ball/rail interface due to cyclic loading exceeding material yield strength, abrasive wear from particulate contamination exceeding ISO 4406:1999 Class 16/14/11, thermal expansion mismatch exceeding 12 μm/m·K differential"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination exceeding 15 μm particle size at ISO 4406:1999 Class 18/16/13"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate IP65-rated wiper seals with 0.1 μm filtration, implement positive-pressure purge system at 0.2 bar"
  - node_2:
      trigger: "Misalignment exceeding 50 μm/m perpendicularity error during installation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Laser alignment system with 5 μm resolution, kinematic mounting with 3-point support at 120° spacing"
bom_nodes:
  rail:
    type: "component"
    urn: "URN:CNFX:ME:RAIL"
    interface_type: "physical-logic-coupled"
  carriage-slider-block:
    type: "part"
    urn: "URN:CNFX:ME:CARRIAGE_SLIDER_BLOCK"
    interface_type: "physical-logic-coupled"
  rolling-elements:
    type: "component"
    urn: "URN:CNFX:ME:ROLLING_ELEMENTS"
    interface_type: "physical-logic-coupled"
  end-seals:
    type: "component"
    urn: "URN:CNFX:ME:END_SEALS"
    interface_type: "physical-logic-coupled"
  lubrication-port:
    type: "component"
    urn: "URN:CNFX:ME:LUBRICATION_PORT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 10285-1:2011 (LINEAR MOTION ROLLING BEARINGS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B5.48-1977 (LINEAR MOTION ROLLING BEARINGS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 645-1:2009 (LINEAR BALL BEARINGS AND SHAFT ASSEMBLIES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/linear-guide-rails.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a1931e782cb3d4cfbabe04de91fe7c278df0fcf3e5abee742fe855e2b00f0960"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Linear guide / Rails

## 1. Technical Definition
Precision mechanical component that provides smooth, low-friction linear motion along a fixed path.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 m/s linear velocity, -20°C to 80°C ambient temperature, 0.5-50 kN load capacity**. Failure boundary: **Contact stress exceeding 2.5 GPa at ball/rail interface, surface roughness degradation beyond Ra 0.2 μm, clearance exceeding 20 μm per meter length**, Mechanism: **Hertzian contact fatigue at ball/rail interface due to cyclic loading exceeding material yield strength, abrasive wear from particulate contamination exceeding ISO 4406:1999 Class 16/14/11, thermal expansion mismatch exceeding 12 μm/m·K differential**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Particulate contamination exceeding 15 μm particle size at ISO 4406:1999 Class 18/16/13 | 8 | Abrasive wear causing surface roughness degradation to Ra 0.8 μm, increased friction coefficient to 0.05 | Integrate IP65-rated wiper seals with 0.1 μm filtration, implement positive-pressure purge system at 0.2 bar |
| Misalignment exceeding 50 μm/m perpendicularity error during installation | 8 | Edge loading causing localized contact stress concentration to 3.8 GPa, premature Brinell indentation | Laser alignment system with 5 μm resolution, kinematic mounting with 3-point support at 120° spacing |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Coordinate Measuring Machine**, **Industrial Lubrication System**  
**Downstream Applications**: CNC Machine Tools, Industrial Robots, Packaging Machinery  

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

### Q: What are the main differences between carbon steel and stainless steel linear guides?
**A**: Carbon chromium bearing steel (SUJ2) offers superior hardness and load capacity for general industrial applications, while stainless steel (SUS440C) provides excellent corrosion resistance for harsh environments like food processing or marine applications.

### Q: How often should linear guides be lubricated for optimal performance?
**A**: Lubrication frequency depends on operating conditions, but typically linear guides require lubrication every 3-6 months under normal conditions. Heavy use or harsh environments may require monthly lubrication through the built-in lubrication ports.

### Q: What factors determine the appropriate linear guide size for my machinery?
**A**: Key factors include load capacity requirements (static and dynamic), required precision level, operating speed, environmental conditions, and available installation space. Consult manufacturer specifications for rail dimensions and carriage block compatibility.

## 6. Manufacturing Compliance
- ISO 10285-1:2011 (LINEAR MOTION ROLLING BEARINGS)
- ANSI B5.48-1977 (LINEAR MOTION ROLLING BEARINGS)
- DIN 645-1:2009 (LINEAR BALL BEARINGS AND SHAFT ASSEMBLIES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Linear guide / Rails](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/linear-guide-rails)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: LINEAR_GUIDE_RAILS | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 2d64d11c
