---
title: "Screw Feeder"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SCREW_FEEDER"
  data_integrity_hash: "bfb822f8475206083a31c44df0e22403"
  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:SCREW_FEEDER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/screw-feeder.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/screw-feeder"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0.1-10 bar differential pressure, 0.5-100 mÂ³/h volumetric flow rate"
    unit: "kg/h or mÂ³/h"
engineering_limits:
  max_safe_operating_point:
    value: 150
    unit: "NÂ"
    consequence: "Torsional shear failure of screw shaft due to material compaction exceeding Mohr-Coulomb failure envelope, or arching/bridging of cohesive powders when wall friction angle exceeds hopper angle"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Abrasive material particle hardness &gt;6.5 Mohs scale (e.g. silica sand at 7.0 Mohs)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hardened tool steel flights with 58-62 HRC surface hardness, or tungsten carbide wear plates at 2400 HV hardness"
  - node_2:
      trigger: "Material moisture content &gt;5% w/w combined with hygroscopic properties (e.g. deliquescent salts)"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Screw surface finish Ra &lt;0.8 Î¼m with PTFE coating having &lt;18Â° contact angle, or heated jacket maintaining &gt;15Â°C above material dew point"
bom_nodes:
  screw-auger-0:
    type: "component"
    urn: "URN:CNFX:ME:SCREW_AUGER_0"
    interface_type: "physical-logic-coupled"
  trough-housing-1:
    type: "component"
    urn: "URN:CNFX:ME:TROUGH_HOUSING_1"
    interface_type: "physical-logic-coupled"
  drive-unit-2:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_UNIT"
    interface_type: "physical-logic-coupled"
  inlet-hopper-3:
    type: "component"
    urn: "URN:CNFX:ME:INLET_HOPPER_3"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/ASME B5.54-2005 - METHODS FOR PERFORMANCE EVALUATION OF COMPUTER NUMERICALLY CONTROLLED MACHINING CENTERS"
    scope: "Verified Engineering Specification"
  - standard: "DIN 2093 - DISC SPRINGS - CALCULATION"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/screw-feeder.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "9a679c0255358f720519f0d8f925ea7da492e8bff13107a38b213231dab3d1ed"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Screw Feeder

## 1. Technical Definition
A mechanical device that uses a rotating screw to transport and meter bulk materials from a storage hopper into a process or system.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-10 bar differential pressure, 0.5-100 mÂ³/h volumetric flow rate**. Failure boundary: **Screw torque exceeds 150 NÂ·m yield strength of AISI 304 stainless steel screw shaft, or material bridging occurs at hopper angles &lt;60Â° from horizontal**, Mechanism: **Torsional shear failure of screw shaft due to material compaction exceeding Mohr-Coulomb failure envelope, or arching/bridging of cohesive powders when wall friction angle exceeds hopper angle**.

### 2.1 Analytical Physics Model
Governed by the **Harmonic Vibration Force Generation**:

> **Primary Equation**: $F_e = m \cdot r \cdot \omega^2 \sin(\omega t)$  
> **Engineering Impact**: Calculates centrifugal force for vibratory sifters/feeders.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| m | Eccentric Mass | Engineering Constant |
| r | Radius | Engineering Constant |
| \omega | Angular Frequency | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Abrasive material particle hardness &gt;6.5 Mohs scale (e.g. silica sand at 7.0 Mohs) | 8 | Screw flight wear rate exceeds 0.5 mm/1000 operating hours, causing volumetric efficiency drop below 85% | Hardened tool steel flights with 58-62 HRC surface hardness, or tungsten carbide wear plates at 2400 HV hardness |
| Material moisture content &gt;5% w/w combined with hygroscopic properties (e.g. deliquescent salts) | 8 | Material adhesion to screw surfaces forming &gt;10 mm buildup, increasing drive torque by 300% | Screw surface finish Ra &lt;0.8 Î¼m with PTFE coating having &lt;18Â° contact angle, or heated jacket maintaining &gt;15Â°C above material dew point |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | kg/h or mÂ³/h | Verified |

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Storage Hopper**, **Variable Frequency Drive**, **Dust Collection System**  
**Downstream Applications**: Plastic Pellets, Pharmaceutical Powders, Animal Feed  

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

### Q: What materials are available for screw feeder construction?
**A**: Our screw feeders are constructed from either carbon steel or stainless steel, offering durability and corrosion resistance suitable for various industrial applications.

### Q: What are the main components of a screw feeder system?
**A**: Key components include a drive unit for power, an inlet hopper for material storage, a rotating screw (auger) for transportation, and a trough/housing that contains and guides the material flow.

### Q: How does a screw feeder handle different bulk materials?
**A**: The rotating screw design meters and transports materials consistently from the hopper into processes, with adjustable speed controls to manage flow rates for various material densities and characteristics.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- ANSI/ASME B5.54-2005 - METHODS FOR PERFORMANCE EVALUATION OF COMPUTER NUMERICALLY CONTROLLED MACHINING CENTERS
- DIN 2093 - DISC SPRINGS - CALCULATION

---
### ðŸ› ï¸ Engineering Resource Access
ðŸ”— **[Full Specification: Screw Feeder](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/screw-feeder)**

### ðŸŒ 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**: SCREW_FEEDER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 17651846
