---
title: "Pressing Cage (Barrel)"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:PRESSING_CAGE_BARREL"
  data_integrity_hash: "e1afbfeef5dfdd2674ee30fa381c0aef"
  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:PRESSING_CAGE_BARREL"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pressing-cage-barrel.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pressing-cage-barrel"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "15-80 MPa internal pressure, 50-150°C operating temperature, 0.5-3.0 m/s peripheral speed"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "MPa"
    consequence: "High-cycle fatigue from pulsating hydraulic pressure (15-25 Hz), stress corrosion cracking in chloride environments (&gt;50 ppm Cl⁻), abrasive wear from seed particles (Mohs hardness 4-6)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Misalignment exceeding 0.1 mm/m between screw shaft and barrel bore"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Precision laser alignment during assembly with 0.02 mm/m tolerance, real-time vibration monitoring at 4 bearing locations"
  - node_2:
      trigger: "Thermal cycling between 50°C and 150°C exceeding 20 cycles/hour"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Controlled heating/cooling rate of 2°C/minute, finite element analysis-optimized fillet radii (R≥5 mm)"
bom_nodes:
  cage-body:
    type: "component"
    urn: "URN:CNFX:ME:CAGE_BODY"
    interface_type: "physical-logic-coupled"
  drainage-barsslots:
    type: "component"
    urn: "URN:CNFX:ME:DRAINAGE_BARSSLOTS"
    interface_type: "physical-logic-coupled"
  end-flanges:
    type: "component"
    urn: "URN:CNFX:ME:END_FLANGES"
    interface_type: "physical-logic-coupled"
  wear-liners:
    type: "component"
    urn: "URN:CNFX:ME:WEAR_LINERS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 286-2:2010 (GEOMETRICAL PRODUCT SPECIFICATIONS - LIMITS AND FITS)"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING (EU MACHINERY DIRECTIVE 2006/42/EC)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pressing-cage-barrel.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "88161b89b75e1671b1d0bbd24b2a483a244c1038f3ae574d6610f87a00c3f3b0"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Pressing Cage (Barrel)

## 1. Technical Definition
The cylindrical housing that contains the pressing mechanism in a continuous screw press for oil extraction.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **15-80 MPa internal pressure, 50-150°C operating temperature, 0.5-3.0 m/s peripheral speed**. Failure boundary: **Yield strength exceedance at 250 MPa (SAE 4140 steel), fatigue crack initiation at 10⁶ cycles (R=-1), thermal distortion beyond 0.5 mm radial clearance**, Mechanism: **High-cycle fatigue from pulsating hydraulic pressure (15-25 Hz), stress corrosion cracking in chloride environments (&gt;50 ppm Cl⁻), abrasive wear from seed particles (Mohs hardness 4-6)**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Misalignment exceeding 0.1 mm/m between screw shaft and barrel bore | 8 | Asymmetric wear pattern reducing wall thickness below 12 mm minimum | Precision laser alignment during assembly with 0.02 mm/m tolerance, real-time vibration monitoring at 4 bearing locations |
| Thermal cycling between 50°C and 150°C exceeding 20 cycles/hour | 8 | Thermal fatigue cracking initiating at stress concentrators (bolt holes, drainage slots) | Controlled heating/cooling rate of 2°C/minute, finite element analysis-optimized fillet radii (R≥5 mm) |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Oil Seed Cleaner**, **Oil Seed Crusher**, **Oil Filtration System**  
**Downstream Applications**: Edible Vegetable Oil, Animal Feed Cake, Biofuel Feedstock  

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

### Q: What materials are used in pressing cage barrels for durability?
**A**: Our pressing cages are manufactured from high-strength alloy steel or stainless steel, with optional wear liners to withstand continuous operation in oil extraction processes.

### Q: How do drainage bars/slots function in a pressing cage?
**A**: Drainage bars or slots in the cage body allow extracted oil to flow out while retaining solid materials, optimizing separation efficiency in continuous screw presses.

### Q: Can pressing cage components be replaced individually?
**A**: Yes, our BOM includes replaceable parts like wear liners, drainage bars, and end flanges, allowing maintenance without replacing the entire cage body.

## 6. Manufacturing Compliance
- ISO 286-2:2010 (GEOMETRICAL PRODUCT SPECIFICATIONS - LIMITS AND FITS)
- CE MARKING (EU MACHINERY DIRECTIVE 2006/42/EC)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Pressing Cage (Barrel)](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/pressing-cage-barrel)**

### 🌐 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**: PRESSING_CAGE_BARREL | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 9a12a681
