---
title: "Rotary Feeder"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:ROTARY_FEEDER"
  data_integrity_hash: "ac4f8bfc0349f2854842072cf5e73818"
  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:ROTARY_FEEDER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotary-feeder.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotary-feeder"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-3.0 m³/h at 2-6 bar differential pressure"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.15
    unit: "mm"
    consequence: "Abrasive wear from silica content &gt;5% in dry materials causing clearance expansion, leading to pressure equalization and feed loss"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Material bridging due to moisture content &gt;2%"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated moisture sensor with automatic bypass at 1.8% humidity threshold"
  - node_2:
      trigger: "Bearing fatigue from unbalanced rotor mass &gt;0.5 kg·mm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Dynamic balancing to ISO 1940 G2.5 standard with real-time vibration monitoring"
bom_nodes:
  rotor:
    type: "part"
    urn: "URN:CNFX:ME:ROTOR"
    interface_type: "physical-logic-coupled"
  housing:
    type: "component"
    urn: "URN:CNFX:ME:HOUSING"
    interface_type: "physical-logic-coupled"
  end-plates:
    type: "component"
    urn: "URN:CNFX:ME:END_PLATES"
    interface_type: "physical-logic-coupled"
  drive-assembly:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_ASSEMBLY"
    interface_type: "physical-logic-coupled"
  seals:
    type: "component"
    urn: "URN:CNFX:ME:SEALS"
    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 B73.3-2015 (SPECIFICATION FOR ROTARY POSITIVE DISPLACEMENT PUMPS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotary-feeder.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "ef1b4d6dcad54c2f19b54774328d9cd03e9c9220e5e7e8a38da5b9f1e082a8e3"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Rotary Feeder

## 1. Technical Definition
A mechanical device that provides controlled, continuous feeding of dry materials in a shotcrete machine.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 m³/h at 2-6 bar differential pressure**. Failure boundary: **Rotor-to-housing clearance exceeding 0.15 mm or differential pressure exceeding 8 bar**, Mechanism: **Abrasive wear from silica content &gt;5% in dry materials causing clearance expansion, leading to pressure equalization and feed 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 |
| :--- | :--- | :--- | :--- |
| Material bridging due to moisture content &gt;2% | 8 | Rotor seizure at torque &gt;45 N·m | Integrated moisture sensor with automatic bypass at 1.8% humidity threshold |
| Bearing fatigue from unbalanced rotor mass &gt;0.5 kg·mm | 8 | Shaft deflection exceeding 0.05 mm at 1200 RPM | Dynamic balancing to ISO 1940 G2.5 standard with real-time vibration monitoring |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Shotcrete Machine**, **Material Storage Silo**, **Compressed Air System**  
**Downstream Applications**: Concrete Tunnel Linings, Structural Concrete Repairs, Swimming Pool Construction  

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

### Q: What materials are rotary feeders typically made from for durability?
**A**: Rotary feeders are commonly constructed from cast iron, carbon steel, stainless steel, or abrasion-resistant steel to withstand harsh industrial environments and extend service life.

### Q: How does a rotary feeder improve shotcrete machine performance?
**A**: A rotary feeder provides controlled, continuous feeding of dry materials, ensuring consistent material flow to the shotcrete machine, which enhances application accuracy and reduces waste.

### Q: What are the key components in a rotary feeder's bill of materials (BOM)?
**A**: The main BOM components include the drive assembly, end plates, housing, rotor, and seals, all designed for reliable operation and easy maintenance in machinery manufacturing.

## 6. Manufacturing Compliance
- ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR ROTORS IN A CONSTANT RIGID STATE)
- ANSI/ASME B73.3-2015 (SPECIFICATION FOR ROTARY POSITIVE DISPLACEMENT PUMPS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Rotary Feeder](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/rotary-feeder)**

### 🌐 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**: ROTARY_FEEDER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 4e614ccd
