---
title: "Precision Linear Guide / Bearing Block"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_LINEAR_GUIDE_BEARING_BLOCK"
  data_integrity_hash: "3ecc8e9909df24d5110e097a9c299649"
  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:PRECISION_LINEAR_GUIDE_BEARING_BLOCK"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/precision-linear-guide-bearing-block.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/precision-linear-guide-bearing-block"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 m/s linear velocity, -20°C to 120°C operating temperature, 0.5-50 kN load capacity"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 3.5
    unit: "GPa"
    consequence: "Hertzian contact stress exceeding material yield strength causes plastic deformation; elastohydrodynamic lubrication failure leads to adhesive wear; thermal expansion mismatch between block/rail materials exceeding 15 μm/m·K differential coefficient"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant particle ingress (ISO 4406 Class 21/19/16 or larger) exceeding 14 μm diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral labyrinth seals with 0.05 mm clearance, positive-pressure purge system maintaining 0.2 bar differential"
  - node_2:
      trigger: "Thermal cycling between -20°C and 120°C at &gt;5°C/min rate"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Material pairing with matched CTE (e.g., aluminum block with steel rail using Invar inserts), active thermal compensation with 0.1°C resolution sensors"
bom_nodes:
  carriage-housing:
    type: "part"
    urn: "URN:CNFX:ME:CARRIAGE_HOUSING"
    interface_type: "physical-logic-coupled"
  recirculating-ball-roller-set:
    type: "component"
    urn: "URN:CNFX:ME:RECIRCULATING_BALL_ROLLER_SET"
    interface_type: "physical-logic-coupled"
  end-seal-wiper:
    type: "component"
    urn: "URN:CNFX:ME:END_SEAL_WIPER"
    interface_type: "physical-logic-coupled"
  lubrication-fitting:
    type: "component"
    urn: "URN:CNFX:ME:LUBRICATION_FITTING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 10791-7:2020 (TEST CONDITIONS FOR MACHINING CENTRES - PART 7: ACCURACY OF FINISHED TEST PIECES)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ABMA 9:1990 (LOAD RATINGS AND FATIGUE LIFE FOR BALL BEARINGS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 645:2018 (LINEAR BALL BEARINGS - BOUNDARY DIMENSIONS AND TOLERANCES)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/precision-linear-guide-bearing-block.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "49a7ff5077796e4545b8e117779fed8684813a8b4047c02f721e5cc5169ecb58"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Linear Guide / Bearing Block

## 1. Technical Definition
A precision mechanical component that provides smooth, low-friction linear motion along a fixed rail.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 m/s linear velocity, -20°C to 120°C operating temperature, 0.5-50 kN load capacity**. Failure boundary: **Ball/roller contact stress exceeds 3.5 GPa (yield strength of GCr15 bearing steel), lubricant film thickness drops below 0.1 μm (boundary lubrication threshold), preload loss exceeds 20% of initial value**, Mechanism: **Hertzian contact stress exceeding material yield strength causes plastic deformation; elastohydrodynamic lubrication failure leads to adhesive wear; thermal expansion mismatch between block/rail materials exceeding 15 μm/m·K differential coefficient**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contaminant particle ingress (ISO 4406 Class 21/19/16 or larger) exceeding 14 μm diameter | 8 | Three-body abrasive wear causing raceway spalling and increased rolling resistance (friction coefficient &gt;0.005) | Integral labyrinth seals with 0.05 mm clearance, positive-pressure purge system maintaining 0.2 bar differential |
| Thermal cycling between -20°C and 120°C at &gt;5°C/min rate | 8 | Differential thermal expansion causing preload loss and positional accuracy degradation (&gt;10 μm deviation) | Material pairing with matched CTE (e.g., aluminum block with steel rail using Invar inserts), active thermal compensation with 0.1°C resolution sensors |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **CNC Machining Center**, **Coordinate Measuring Machine**, **Surface Grinding Machine**  
**Downstream Applications**: CNC Machine Tools, Industrial Robots, Semiconductor Manufacturing Equipment  

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

### Q: What materials are used in precision linear guide bearing blocks?
**A**: Our precision linear guide bearing blocks are manufactured using high-carbon chromium bearing steel (GCr15/52100) for durability, case-hardened steel for wear resistance, and stainless steel options for corrosion-resistant applications in harsh environments.

### Q: How does the recirculating ball system work in linear bearing blocks?
**A**: The recirculating ball/roller set inside the carriage housing allows balls or rollers to circulate continuously through load-bearing and return paths, providing smooth, low-friction linear motion with minimal maintenance requirements and extended service life.

### Q: What maintenance do precision linear guides require?
**A**: Precision linear guides require periodic lubrication through the built-in fitting, regular cleaning of wipers/end seals to prevent contamination, and inspection of the carriage housing and rail interface for wear. Proper maintenance ensures optimal performance and longevity.

## 6. Manufacturing Compliance
- ISO 10791-7:2020 (TEST CONDITIONS FOR MACHINING CENTRES - PART 7: ACCURACY OF FINISHED TEST PIECES)
- ANSI/ABMA 9:1990 (LOAD RATINGS AND FATIGUE LIFE FOR BALL BEARINGS)
- DIN 645:2018 (LINEAR BALL BEARINGS - BOUNDARY DIMENSIONS AND TOLERANCES)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Precision Linear Guide / Bearing Block](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/precision-linear-guide-bearing-block)**

### 🌐 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**: PRECISION_LINEAR_GUIDE_BEARING_BLOCK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4faa98a6
