---
title: "Ball Screw"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BALL_SCREW"
  data_integrity_hash: "b118f36858f2b6c8f4a0d72cabd03b64"
  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:BALL_SCREW"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ball-screw.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/ball-screw"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "Axial load: 100-50000 N, Speed: 0.1-3.0 m/s, Temperature: -20°C to 120°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 1.5
    unit: "x"
    consequence: "Hertzian contact stress exceeding 4200 MPa causes plastic deformation in ball-raceway contact, leading to Brinell-type indentation and loss of preload"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contamination ingress (particles &gt;5 μm) into ball-raceway interface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral wiper seals with IP65 rating and positive-pressure lubrication system"
  - node_2:
      trigger: "Thermal expansion mismatch between screw (α=11.7×10⁻⁶/K) and nut (α=23.6×10⁻⁶/K) materials"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Material pairing with matched CTE (e.g., steel screw with steel nut) and temperature-compensating preload mechanism"
bom_nodes:
  screw-shaft:
    type: "component"
    urn: "URN:CNFX:ME:SCREW_SHAFT"
    interface_type: "physical-logic-coupled"
  ball-nut:
    type: "part"
    urn: "URN:CNFX:ME:BALL_NUT"
    interface_type: "physical-logic-coupled"
  ball-bearings:
    type: "component"
    urn: "URN:CNFX:ME:BALL_BEARINGS"
    interface_type: "physical-logic-coupled"
  return-system:
    type: "part"
    urn: "URN:CNFX:ME:RETURN_SYSTEM"
    interface_type: "physical-logic-coupled"
  seals:
    type: "component"
    urn: "URN:CNFX:ME:SEALS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 3408-1:2006 (BALL SCREWS - PART 1: VOCABULARY AND DESIGNATION)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B5.48-1977 (BALL SCREWS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 69051-1:2014 (BALL SCREW DRIVES - PART 1: GENERAL SPECIFICATIONS, ACCEPTANCE CONDITIONS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ball-screw.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "661aa191c30b392a53508ba5699825c4b936b5b0d348b8d66f69c77d287093a2"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Ball Screw

## 1. Technical Definition
A precision mechanical component that converts rotary motion into linear motion with minimal friction using recirculating ball bearings.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Axial load: 100-50000 N, Speed: 0.1-3.0 m/s, Temperature: -20°C to 120°C**. Failure boundary: **Axial load exceeds 1.5x rated dynamic load capacity (C) or speed exceeds 3.5 m/s**, Mechanism: **Hertzian contact stress exceeding 4200 MPa causes plastic deformation in ball-raceway contact, leading to Brinell-type indentation and loss of preload**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contamination ingress (particles &gt;5 μm) into ball-raceway interface | 8 | Increased rolling resistance and torque ripple &gt;15% nominal | Integral wiper seals with IP65 rating and positive-pressure lubrication system |
| Thermal expansion mismatch between screw (α=11.7×10⁻⁶/K) and nut (α=23.6×10⁻⁶/K) materials | 8 | Preload loss exceeding 20% at ΔT&gt;50°C, causing backlash &gt;10 μm | Material pairing with matched CTE (e.g., steel screw with steel nut) and temperature-compensating preload mechanism |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Ball nut](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ball-nut.md) `(Standalone System)`
- [Return system](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/return-system.md) `(Standalone System)`

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

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

### Q: What are the main advantages of using ball screws in machinery manufacturing?
**A**: Ball screws offer high precision, efficiency, and durability with minimal friction, enabling accurate linear motion control in CNC machines, automation systems, and industrial equipment.

### Q: How do I choose between bearing steel, alloy steel, and stainless steel ball screws?
**A**: Select bearing steel for high load capacity and durability, alloy steel for strength and cost-effectiveness, or stainless steel for corrosion resistance in harsh environments.

### Q: What maintenance is required for ball screw assemblies?
**A**: Regular lubrication of the screw shaft and ball bearings, inspection of seals for contamination prevention, and monitoring of the return system ensure optimal performance and longevity.

## 6. Manufacturing Compliance
- ISO 3408-1:2006 (BALL SCREWS - PART 1: VOCABULARY AND DESIGNATION)
- ANSI/ASME B5.48-1977 (BALL SCREWS)
- DIN 69051-1:2014 (BALL SCREW DRIVES - PART 1: GENERAL SPECIFICATIONS, ACCEPTANCE CONDITIONS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Ball Screw](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/ball-screw)**

### 🌐 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**: BALL_SCREW | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: f3c25a67
