---
title: "Precision Rotary Encoder Disc"
industry: "Manufacture of Measuring, Testing, Navigation and Control Equipment"
verification_protocol:
  urn: "URN:CNFX:ME:PRECISION_ROTARY_ENCODER_DISC"
  data_integrity_hash: "6cb1140f1f0052fb7d035e8e5dffcd8e"
  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_ROTARY_ENCODER_DISC"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/precision-rotary-encoder-disc.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/precision-rotary-encoder-disc"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0-10000 RPM rotational speed, -40°C to 85°C operating temperature, 5-24 VDC supply voltage"
    unit: "lines/revolution"
  secondary_spec:
    status: "config-dependent"
    typical_range: "0-10000 RPM rotational speed, -40°C to 85°C operating temperature, 5-24 VDC supply voltage"
    unit: "μm"
engineering_limits:
  max_safe_operating_point:
    value: 120
    unit: "°C"
    consequence: "Thermal expansion mismatch between glass substrate (α=8.5×10⁻⁶/K) and chromium coating (α=4.9×10⁻⁶/K) causing pattern distortion; photopolymer degradation at 405 nm wavelength exposure exceeding 1000 mJ/cm²"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Angular misalignment exceeding 0.1° between disc and shaft"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision-ground H7/g6 interference fit with 2 μm concentricity tolerance"
  - node_2:
      trigger: "Condensation formation at 85% relative humidity with 10°C temperature differential"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hermetic sealing with 1×10⁻³ mbar helium leak rate and desiccant-filled cavity"
bom_nodes:
  patterned-substrate:
    type: "component"
    urn: "URN:CNFX:ME:PATTERNED_SUBSTRATE"
    interface_type: "physical-logic-coupled"
  radial-pattern-layer:
    type: "component"
    urn: "URN:CNFX:ME:RADIAL_PATTERN_LAYER"
    interface_type: "physical-logic-coupled"
  protective-coating:
    type: "component"
    urn: "URN:CNFX:ME:PROTECTIVE_COATING"
    interface_type: "physical-logic-coupled"
  mounting-hub:
    type: "component"
    urn: "URN:CNFX:ME:MOUNTING_HUB"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 16063-1:1998 (VIBRATION AND SHOCK SENSOR CALIBRATION)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B89.1.12-2019 (DIMENSIONAL METROLOGY FOR ROTARY ENCODERS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 19233:2016 (INDUSTRIAL PROCESS MEASUREMENT AND CONTROL - ROTARY ENCODERS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/precision-rotary-encoder-disc.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "97ee2d42e435ada9a5bc05e0fee31a030cf8672df0ccbb818a4d7a8bd7d83ba8"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Precision Rotary Encoder Disc

## 1. Technical Definition
Optical disc with precisely patterned tracks for angular position measurement in rotary encoders.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-10000 RPM rotational speed, -40°C to 85°C operating temperature, 5-24 VDC supply voltage**. Failure boundary: **Disc pattern deformation at 120°C glass transition temperature, optical track damage at 1500 G shock acceleration, signal degradation at 0.5 μm radial runout**, Mechanism: **Thermal expansion mismatch between glass substrate (α=8.5×10⁻⁶/K) and chromium coating (α=4.9×10⁻⁶/K) causing pattern distortion; photopolymer degradation at 405 nm wavelength exposure exceeding 1000 mJ/cm²**.

### 2.1 Analytical Physics Model
Governed by the **Rayleigh Resolution Criterion**:

> **Primary Equation**: $d = \frac{0.61 \lambda}{NA}$  
> **Engineering Impact**: Defines the theoretical limit of machine vision systems.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| \lambda | Wavelength | Engineering Constant |
| NA | Numerical Aperture | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Angular misalignment exceeding 0.1° between disc and shaft | 8 | Interference pattern distortion causing quadrature signal phase error | Precision-ground H7/g6 interference fit with 2 μm concentricity tolerance |
| Condensation formation at 85% relative humidity with 10°C temperature differential | 8 | Optical scattering at glass-air interface reducing photodiode signal-to-noise ratio below 20 dB | Hermetic sealing with 1×10⁻³ mbar helium leak rate and desiccant-filled cavity |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | lines/revolution | Verified |
| secondary_spec | Config-dependent | μm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Precision Photolithography System**, **Clean Room Environment Control System**, **Optical Inspection Station**  
**Downstream Applications**: Industrial Servo Motors, CNC Machine Tool Positioning Systems, Robotic Arm Joint Controllers  

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

### Q: What materials are used in this precision rotary encoder disc?
**A**: This encoder disc is manufactured using optical-grade glass substrate with chromium coating for pattern definition and photoresist polymer for precise track formation, ensuring durability and measurement accuracy.

### Q: What are the key specifications for this encoder disc?
**A**: Key specifications include pattern accuracy measured in arc-seconds, resolution in lines per revolution, maximum rotational speed in RPM, operating temperature range, outer diameter, and thickness - all critical for precise angular position measurement in industrial applications.

### Q: How does this encoder disc integrate into measurement systems?
**A**: The disc mounts via a hub assembly and works with optical sensors to detect patterned tracks, converting rotational position into electrical signals for navigation, testing, and control equipment in industrial automation environments.

## 6. Manufacturing Compliance
- ISO 16063-1:1998 (VIBRATION AND SHOCK SENSOR CALIBRATION)
- ANSI/ASME B89.1.12-2019 (DIMENSIONAL METROLOGY FOR ROTARY ENCODERS)
- DIN 19233:2016 (INDUSTRIAL PROCESS MEASUREMENT AND CONTROL - ROTARY ENCODERS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Precision Rotary Encoder Disc](https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/precision-rotary-encoder-disc)**

### 🌐 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_ROTARY_ENCODER_DISC | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 40fd8e6f
