---
title: "Ball Screw/Lead Screw"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:BALL_SCREWLEAD_SCREW"
  data_integrity_hash: "105569540e63b64c5a0f97f1a69a5209"
  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_SCREWLEAD_SCREW"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ball-screwlead-screw.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/ball-screwlead-screw"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "Axial load: 100-5000 N, Speed: 0.1-2.0 m/s, Temperature: -20°C to 80°C"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 5500
    unit: "N"
    consequence: "Buckling instability (Euler's formula), Hertzian contact stress exceeding 1800 MPa yield strength, or thermal expansion mismatch exceeding 0.1 mm clearance"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Contaminant particle &gt;25 μm diameter entering ball-raceway interface"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "IP65-rated wiper seals with 0.1 mm labyrinth clearance and positive-pressure purge system"
  - node_2:
      trigger: "Lubricant viscosity drop below ISO VG 32 at 40°C due to thermal degradation"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Synthetic ester-based grease with 200°C drop point and automatic lubrication system with 8-hour interval"
bom_nodes:
  screw-shaft:
    type: "component"
    urn: "URN:CNFX:ME:SCREW_SHAFT"
    interface_type: "physical-logic-coupled"
  nut:
    type: "part"
    urn: "URN:CNFX:ME:NUT"
    interface_type: "physical-logic-coupled"
  ball-bearings-ball-screw-only:
    type: "component"
    urn: "URN:CNFX:ME:BALL_BEARINGS_BALL_SCREW_ONLY"
    interface_type: "physical-logic-coupled"
  wipersseals:
    type: "component"
    urn: "URN:CNFX:ME:WIPERSSEALS"
    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 B5.48-1977 (R2003) - BALL SCREWS"
    scope: "Verified Engineering Specification"
  - standard: "DIN 69051-1:2018-03 - BALL SCREWS - PART 1: GENERAL SPECIFICATIONS AND ACCEPTANCE CONDITIONS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/ball-screwlead-screw.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "6a1e11a21d0fc7862170ec30a0a60198e4d746a02f376b399f2e21f891e5baa6"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Ball Screw/Lead Screw

## 1. Technical Definition
A precision mechanical component that converts rotary motion into linear motion with high efficiency and accuracy.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **Axial load: 100-5000 N, Speed: 0.1-2.0 m/s, Temperature: -20°C to 80°C**. Failure boundary: **Axial load exceeds 5500 N, speed exceeds 2.5 m/s, or temperature exceeds 100°C**, Mechanism: **Buckling instability (Euler's formula), Hertzian contact stress exceeding 1800 MPa yield strength, or thermal expansion mismatch exceeding 0.1 mm clearance**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Contaminant particle &gt;25 μm diameter entering ball-raceway interface | 8 | Brinnelling damage causing 0.05 mm permanent indentation and increased torque &gt;2.5 Nm | IP65-rated wiper seals with 0.1 mm labyrinth clearance and positive-pressure purge system |
| Lubricant viscosity drop below ISO VG 32 at 40°C due to thermal degradation | 8 | Boundary lubrication causing coefficient of friction &gt;0.005 and temperature rise &gt;15°C above ambient | Synthetic ester-based grease with 200°C drop point and automatic lubrication system with 8-hour interval |

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

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

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

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

### Q: What is the difference between a ball screw and a lead screw?
**A**: Ball screws use recirculating ball bearings for minimal friction and high efficiency (90%+), while lead screws use sliding contact with lower efficiency but simpler construction and often lower cost.

### Q: What materials are best for ball screws in corrosive environments?
**A**: Stainless steel ball screws provide excellent corrosion resistance for humid or chemical environments, while alloy steel offers higher load capacity but requires protective coatings in corrosive conditions.

### Q: How do I maintain ball screw assemblies in industrial machinery?
**A**: Regular lubrication of screw shafts and nuts, inspection of wipers/seals for contamination, and monitoring for backlash or wear in ball bearings will maximize service life and maintain precision.

## 6. Manufacturing Compliance
- ISO 3408-1:2006 - BALL SCREWS - PART 1: VOCABULARY AND DESIGNATION
- ANSI B5.48-1977 (R2003) - BALL SCREWS
- DIN 69051-1:2018-03 - BALL SCREWS - PART 1: GENERAL SPECIFICATIONS AND ACCEPTANCE CONDITIONS

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

### 🌐 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**: BALL_SCREWLEAD_SCREW | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: ba83ad55
