---
title: "Main Grinding Spindle"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:MAIN_GRINDING_SPINDLE"
  data_integrity_hash: "0b548ebb6b2b6ede83f603da9b0491f0"
  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:MAIN_GRINDING_SPINDLE"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/main-grinding-spindle.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/main-grinding-spindle"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "1500-6000 rpm, 0.5-2.5 kW power input, 0.1-0.5 μm radial runout tolerance"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 6500
    unit: "rpm"
    consequence: "Brinelling fatigue at 1.5×10⁹ stress cycles (Hertzian contact stress &gt; 2.1 GPa), thermal expansion mismatch (Δα=12×10⁻⁶ K⁻¹ between ceramic bearings and steel shaft) causing preload loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Coolant ingress (0.1% water contamination in oil)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integral labyrinth seals with 0.05 mm radial clearance, moisture-sensitive dielectric sensors"
  - node_2:
      trigger: "Unbalanced grinding wheel (ISO 1940 G2.5 tolerance violation)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Active magnetic bearings with 500 Hz bandwidth, real-time balancing via piezoelectric actuators"
bom_nodes:
  spindle-shaft:
    type: "component"
    urn: "URN:CNFX:ME:SPINDLE_SHAFT"
    interface_type: "physical-logic-coupled"
  bearings:
    type: "component"
    urn: "URN:CNFX:ME:BEARINGS"
    interface_type: "physical-logic-coupled"
  tool-holder:
    type: "part"
    urn: "URN:CNFX:ME:TOOL_HOLDER"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT RIGID STATE)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI B5.45-1972 (SPINDLES FOR MACHINE TOOLS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/main-grinding-spindle.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "a9620ee5551687cab9eacccf38a34a182f6d5bb83fef0d7eac9662b5c14be3b3"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Main Grinding Spindle

## 1. Technical Definition
The primary rotating shaft that drives the grinding wheel in a precision optical lens grinding machine.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **1500-6000 rpm, 0.5-2.5 kW power input, 0.1-0.5 μm radial runout tolerance**. Failure boundary: **Exceeds 6500 rpm (critical speed resonance), exceeds 70°C bearing temperature (lubricant breakdown), exceeds 1.0 μm radial runout (optical tolerance violation)**, Mechanism: **Brinelling fatigue at 1.5×10⁹ stress cycles (Hertzian contact stress &gt; 2.1 GPa), thermal expansion mismatch (Δα=12×10⁻⁶ K⁻¹ between ceramic bearings and steel shaft) causing preload loss**.

### 2.1 Analytical Physics Model
Governed by the **L10 Bearing Life & Fatigue Model**:

> **Primary Equation**: $L_{10} = (\frac{C}{P})^p$  
> **Engineering Impact**: Predicts mechanical lifecycle before component fatigue.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| C | Dynamic Load Rating | Engineering Constant |
| P | Equivalent Dynamic Load | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Coolant ingress (0.1% water contamination in oil) | 8 | Hydrodynamic bearing film collapse (λ&lt;1.5 film thickness ratio) | Integral labyrinth seals with 0.05 mm radial clearance, moisture-sensitive dielectric sensors |
| Unbalanced grinding wheel (ISO 1940 G2.5 tolerance violation) | 8 | Forced vibration at 1× and 2× rotational frequency exceeding 4.5 mm/s RMS | Active magnetic bearings with 500 Hz bandwidth, real-time balancing via piezoelectric actuators |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Coolant Filtration System**, **Precision Workholding Fixture**, **CNC Control System**  
**Downstream Applications**: Camera Lenses, Microscope Objectives, Laser Optics  

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

### Q: What makes this main grinding spindle suitable for optical lens manufacturing?
**A**: The combination of high-grade alloy steel shaft and ceramic bearings provides exceptional rotational accuracy, minimal thermal expansion, and vibration resistance required for precision optical lens grinding in computer and electronic product manufacturing.

### Q: How do ceramic bearings improve spindle performance in electronic product grinding?
**A**: Ceramic bearings offer superior hardness, corrosion resistance, and thermal stability compared to steel bearings, reducing friction and heat generation while maintaining precise tolerances critical for grinding optical components in electronic manufacturing.

### Q: What maintenance is required for this main grinding spindle in optical equipment?
**A**: Regular lubrication of bearings, periodic inspection of spindle shaft alignment, and monitoring of vibration levels are essential. The ceramic bearings typically require less frequent replacement than steel bearings in continuous optical manufacturing operations.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT RIGID STATE)
- ANSI B5.45-1972 (SPINDLES FOR MACHINE TOOLS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Main Grinding Spindle](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/main-grinding-spindle)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: MAIN_GRINDING_SPINDLE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0b283cc5
