---
title: "Metering Screw/Feeder"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:METERING_SCREWFEEDER"
  data_integrity_hash: "34323d45d0a8269405b917a1c5be3272"
  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:METERING_SCREWFEEDER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/metering-screwfeeder.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/metering-screwfeeder"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.1-100 kg/h with ±0.5% accuracy at 0.1-10 bar pressure differential"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 0.1
    unit: "mm"
    consequence: "Hopper arching due to cohesive material properties exceeding yield strength (σ_y &gt; 5 kPa) or screw fatigue from cyclic loading at &gt;10^6 cycles with stress amplitude &gt;150 MPa"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrostatic discharge (ESD) &gt; 15 kV from polymer powder tribocharging"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Grounding system with &lt;1 Ω resistance and Faraday cage shielding around electronics"
  - node_2:
      trigger: "Abrasive material with Mohs hardness &gt; 7 (e.g., silica) at &gt;50 kg/h feed rate"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hardened tool steel (HRC 60+) screw with tungsten carbide coating (2000 HV) and sacrificial wear liners"
bom_nodes:
  screw:
    type: "component"
    urn: "URN:CNFX:ME:SCREW"
    interface_type: "physical-logic-coupled"
  barrelhousing:
    type: "component"
    urn: "URN:CNFX:ME:BARRELHOUSING"
    interface_type: "physical-logic-coupled"
  drive-unit:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_UNIT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/CEMA 350-2015 - SCREW CONVEYORS FOR BULK MATERIALS"
    scope: "Verified Engineering Specification"
  - standard: "DIN 15262-1:2016 - CONTINUOUS MECHANICAL HANDLING EQUIPMENT - SCREW CONVEYORS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/metering-screwfeeder.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "24308507c7bbdf874698e980d6e95112055147016668f3653537227ad811e93b"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Metering Screw/Feeder

## 1. Technical Definition
A precision component that controls and delivers a specific volume or mass of material at a consistent rate.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.1-100 kg/h with ±0.5% accuracy at 0.1-10 bar pressure differential**. Failure boundary: **Screw deflection exceeding 0.1 mm at 50 N·m torque or material bridging at 45° angle of repose**, Mechanism: **Hopper arching due to cohesive material properties exceeding yield strength (σ_y &gt; 5 kPa) or screw fatigue from cyclic loading at &gt;10^6 cycles with stress amplitude &gt;150 MPa**.

### 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 |
| :--- | :--- | :--- | :--- |
| Electrostatic discharge (ESD) &gt; 15 kV from polymer powder tribocharging | 8 | Controller PCB component dielectric breakdown | Grounding system with &lt;1 Ω resistance and Faraday cage shielding around electronics |
| Abrasive material with Mohs hardness &gt; 7 (e.g., silica) at &gt;50 kg/h feed rate | 8 | Screw flight wear exceeding 0.5 mm clearance, causing volumetric accuracy loss &gt;3% | Hardened tool steel (HRC 60+) screw with tungsten carbide coating (2000 HV) and sacrificial wear liners |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | 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**: **Material Hopper**, **Control Panel with PLC**, **Dust Collection System**  
**Downstream Applications**: Pharmaceutical Tablets, Food Seasoning Packets, Plastic Pellet Batches  

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

### Q: What materials can the stainless steel metering screw feeder handle?
**A**: Our stainless steel metering screw feeder is designed to handle various dry powders, granules, and small pellets commonly used in machinery manufacturing, offering corrosion resistance and easy cleaning for material consistency.

### Q: How does the metering screw feeder maintain consistent material delivery rates?
**A**: The precision-engineered screw, barrel/housing, and drive unit work together to control material flow through exact volumetric or gravimetric measurement, ensuring consistent delivery rates critical for manufacturing process stability.

### Q: What industries typically use metering screw feeders in their equipment?
**A**: Metering screw feeders are essential in machinery manufacturing for applications like plastic extrusion, food processing equipment, pharmaceutical machinery, chemical processing systems, and additive manufacturing where precise material dosing is required.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- ANSI/CEMA 350-2015 - SCREW CONVEYORS FOR BULK MATERIALS
- DIN 15262-1:2016 - CONTINUOUS MECHANICAL HANDLING EQUIPMENT - SCREW CONVEYORS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Metering Screw/Feeder](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/metering-screwfeeder)**

### 🌐 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**: METERING_SCREWFEEDER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 8e2536a6
