---
title: "Linear Bearings"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:LINEAR_BEARINGS"
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source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:LINEAR_BEARINGS"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/linear-bearings.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/linear-bearings"
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attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 m/s linear velocity, -40°C to 120°C temperature, 0.5-50 kN load capacity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: "N/A"
    unit: "N/A"
    consequence: "Adhesive wear due to boundary lubrication breakdown when λ-ratio (film thickness/surface roughness) &lt; 1, causing direct metal-to-metal contact and cold welding"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant ingress (ISO 4406 Class &gt; 18/16/13) exceeding 5 μm particle size"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral wiper seals with &lt; 0.3 μm filtration, positive pressure purge system at 0.1-0.3 bar"
  - node_2:
      trigger: "Misalignment exceeding 0.05 mm/m or angular error &gt; 0.1°"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Self-aligning bearing housings with ±2° compensation, precision ground mounting surfaces with 0.01 mm flatness"
bom_nodes:
  outer-housing:
    type: "component"
    urn: "URN:CNFX:ME:OUTER_HOUSING"
    interface_type: "physical-logic-coupled"
  recirculating-ballsrollers:
    type: "component"
    urn: "URN:CNFX:ME:RECIRCULATING_BALLSROLLERS"
    interface_type: "physical-logic-coupled"
  retainercage:
    type: "component"
    urn: "URN:CNFX:ME:RETAINERCAGE"
    interface_type: "physical-logic-coupled"
  sealsshields:
    type: "component"
    urn: "URN:CNFX:ME:SEALSSHIELDS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 10285:2011 - LINEAR MOTION ROLLING BEARINGS - LINEAR BALL BEARINGS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ABMA 12.2-2018 - TOLERANCES FOR LINEAR BALL BEARINGS"
    scope: "Verified Engineering Specification"
  - standard: "DIN 636:2016 - LINEAR BALL BEARINGS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/linear-bearings.md"
on_chain_sovereignty:
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  royalty_logic: "IPFS-CID-REQUIRED"
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version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Linear Bearings

## 1. Technical Definition
Precision mechanical components that provide smooth, low-friction linear motion along a fixed axis.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 m/s linear velocity, -40°C to 120°C temperature, 0.5-50 kN load capacity**. Failure boundary: **Brinnell hardness ratio (ball/race) &lt; 1.1, lubricant film thickness &lt; 0.1 μm, surface roughness &gt; 0.8 μm Ra**, Mechanism: **Adhesive wear due to boundary lubrication breakdown when λ-ratio (film thickness/surface roughness) &lt; 1, causing direct metal-to-metal contact and cold welding**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contaminant ingress (ISO 4406 Class &gt; 18/16/13) exceeding 5 μm particle size | 8 | Three-body abrasive wear with 0.05-0.2 mm/year wear rate | Integral wiper seals with &lt; 0.3 μm filtration, positive pressure purge system at 0.1-0.3 bar |
| Misalignment exceeding 0.05 mm/m or angular error &gt; 0.1° | 8 | Edge loading with Hertzian contact stress &gt; 2.8 GPa | Self-aligning bearing housings with ±2° compensation, precision ground mounting surfaces with 0.01 mm flatness |

## 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 Machining Center**, **Coordinate Measuring Machine**, **Industrial Grinding Machine**  
**Downstream Applications**: CNC Machine Tools, Industrial Robots, Packaging Machinery  

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

### Q: What are the main advantages of linear bearings in machinery manufacturing?
**A**: Linear bearings provide smooth, precise linear motion with minimal friction, reducing wear and energy consumption while maintaining accuracy in industrial applications.

### Q: How do I choose between chrome steel and stainless steel linear bearings?
**A**: Chrome steel offers superior hardness and load capacity for general industrial use, while stainless steel provides corrosion resistance for harsh environments like food processing or chemical applications.

### Q: What maintenance do linear bearings require in industrial equipment?
**A**: Regular lubrication of recirculating balls/rollers and inspection of seals/shields are essential. Engineering plastic bearings often require less maintenance than metal versions in certain applications.

## 6. Manufacturing Compliance
- ISO 10285:2011 - LINEAR MOTION ROLLING BEARINGS - LINEAR BALL BEARINGS
- ANSI/ABMA 12.2-2018 - TOLERANCES FOR LINEAR BALL BEARINGS
- DIN 636:2016 - LINEAR BALL BEARINGS

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

### 🌐 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**: LINEAR_BEARINGS | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 99bbde4f
