---
title: "Indexing Motor"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:INDEXING_MOTOR"
  data_integrity_hash: "72a09b0c49bc331c2eab4a4a035d338b"
  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:INDEXING_MOTOR"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/indexing-motor.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/indexing-motor"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-5.0 NÂ·m torque, 0.1-10.0 rpm rotational speed, Â±0.05Â° positioning accuracy"
    unit: "degree"
engineering_limits:
  max_safe_operating_point:
    value: 6.0
    unit: "NÂ"
    consequence: "Bearing seizure due to lubricant breakdown at 120Â°C glass transition temperature, permanent magnet demagnetization at 150Â°C Curie point, encoder misalignment from thermal expansion coefficient mismatch (17Ã—10â»â¶/Â°C aluminum vs 11Ã—10â»â¶/Â°C steel)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Back-EMF voltage spike exceeding 150% rated voltage during rapid deceleration"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated dynamic braking resistor with 100ms response time and varistor protection at drive terminals"
  - node_2:
      trigger: "Harmonic resonance at 2.5kHz matching natural frequency of rotor assembly"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Stiffness-tuned rotor design with damping ratio Î¶=0.25 and notch filter at 2.5kHz in drive controller"
bom_nodes:
  stator:
    type: "part"
    urn: "URN:CNFX:ME:STATOR"
    interface_type: "physical-logic-coupled"
  rotor:
    type: "component"
    urn: "URN:CNFX:ME:ROTOR"
    interface_type: "physical-logic-coupled"
  encoderresolver:
    type: "part"
    urn: "URN:CNFX:ME:ENCODERRESOLVER"
    interface_type: "physical-logic-coupled"
  brake:
    type: "part"
    urn: "URN:CNFX:ME:BRAKE"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    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/ASME B5.45-1972 (SPINDLE NOSES AND TOOL SHANKS FOR INDEXING AND ROTARY TABLES)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 5480-1:2006 (INVOLUTE SPLINES BASED ON REFERENCE DIAMETERS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/indexing-motor.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "760fc6bf862f3895396934a8d7fbf92fb08ab483c82cca63c39dde878579e5a9"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Indexing Motor

## 1. Technical Definition
A specialized motor designed to provide precise rotational positioning and intermittent motion for indexing mechanisms.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-5.0 NÂ·m torque, 0.1-10.0 rpm rotational speed, Â±0.05Â° positioning accuracy**. Failure boundary: **Continuous torque exceeding 6.0 NÂ·m for &gt;30 seconds, bearing temperature &gt;120Â°C, encoder signal loss &gt;100ms**, Mechanism: **Bearing seizure due to lubricant breakdown at 120Â°C glass transition temperature, permanent magnet demagnetization at 150Â°C Curie point, encoder misalignment from thermal expansion coefficient mismatch (17Ã—10â»â¶/Â°C aluminum vs 11Ã—10â»â¶/Â°C steel)**.

### 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 |
| :--- | :--- | :--- | :--- |
| Back-EMF voltage spike exceeding 150% rated voltage during rapid deceleration | 8 | Insulation breakdown in stator windings causing phase-to-phase short circuit | Integrated dynamic braking resistor with 100ms response time and varistor protection at drive terminals |
| Harmonic resonance at 2.5kHz matching natural frequency of rotor assembly | 8 | Accelerated bearing wear with vibration amplitude exceeding 0.5mm/s RMS | Stiffness-tuned rotor design with damping ratio Î¶=0.25 and notch filter at 2.5kHz in drive controller |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Stator](https://cnfx.com/llms/industry/electrical-equipment-manufacturing/product/stator.md) `(Standalone System)`
- [Encoder/Resolver](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/encoderresolver.md) `(Standalone System)`
- [Brake](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/brake.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Programmable Logic Controller (PLC)**, **Servo Drive Amplifier**, **Rotary Encoder Feedback System**  
**Downstream Applications**: Automated Assembly Machines, Packaging Equipment, Printing Presses  

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

### Q: What is the primary application of an indexing motor in machinery manufacturing?
**A**: Indexing motors are used to provide precise rotational positioning and controlled intermittent motion in automated machinery, such as assembly lines, packaging equipment, and CNC machines, ensuring accurate part placement and timing.

### Q: How does the encoder or resolver enhance the performance of an indexing motor?
**A**: The encoder or resolver provides real-time feedback on the motor's position, enabling closed-loop control for high accuracy in rotational positioning, reducing errors, and improving repeatability in indexing applications.

### Q: What materials are used in the construction of indexing motors for durability?
**A**: Indexing motors are built with electrical steel laminations for efficient magnetic performance, copper windings for reliable electrical conductivity, permanent magnets for strong torque, and aluminum or steel housing for robust protection in industrial environments.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT RIGID STATE)
- ANSI/ASME B5.45-1972 (SPINDLE NOSES AND TOOL SHANKS FOR INDEXING AND ROTARY TABLES)
- DIN 5480-1:2006 (INVOLUTE SPLINES BASED ON REFERENCE DIAMETERS)

---
### ðŸ› ï¸ Engineering Resource Access
ðŸ”— **[Full Specification: Indexing Motor](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/indexing-motor)**

### ðŸŒ 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**: INDEXING_MOTOR | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: aa88d83e
