---
title: "Injection Cylinder"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:INJECTION_CYLINDER"
  data_integrity_hash: "bcd11da4a6da411c639268694513cf09"
  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:INJECTION_CYLINDER"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/injection-cylinder.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/injection-cylinder"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "50-200 bar hydraulic, 6-10 bar pneumatic"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "bar"
    consequence: "Hydraulic: Cavitation at 0.5 bar absolute pressure causing vapor bubble collapse and surface pitting. Pneumatic: Adiabatic compression heating exceeding 200°C causing seal degradation"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 3 μm absolute filtration with differential pressure monitoring at 2 bar"
  - node_2:
      trigger: "Piston rod misalignment exceeding 0.1 mm/m runout"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate laser-aligned mounting surfaces with 0.05 mm positional tolerance"
bom_nodes:
  cylinder-barrel:
    type: "part"
    urn: "URN:CNFX:ME:CYLINDER_BARREL"
    interface_type: "physical-logic-coupled"
  piston:
    type: "component"
    urn: "URN:CNFX:ME:PISTON"
    interface_type: "physical-logic-coupled"
  piston-rod:
    type: "component"
    urn: "URN:CNFX:ME:PISTON_ROD"
    interface_type: "physical-logic-coupled"
  seal-kit:
    type: "component"
    urn: "URN:CNFX:ME:SEAL_KIT"
    interface_type: "physical-logic-coupled"
  end-caps:
    type: "component"
    urn: "URN:CNFX:ME:END_CAPS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 11901-1:2014 (HYDRAULIC CYLINDERS - MOUNTING DIMENSIONS)"
    scope: "Verified Engineering Specification"
  - standard: "ANSI/B93.5M-1995 (HYDRAULIC FLUID POWER - CYLINDERS - BORE AND ROD AREA RATIOS)"
    scope: "Verified Engineering Specification"
  - standard: "DIN 24334:1982 (HYDRAULIC CYLINDERS - SERIES 25 TO 500 BAR - MOUNTING DIMENSIONS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/injection-cylinder.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "97347e6f50fe45158f9e9049040b685f81b210b139f4f364a0d7ac79aaf22a40"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Injection Cylinder

## 1. Technical Definition
Hydraulic or pneumatic cylinder that provides the linear force for material injection in molding systems

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **50-200 bar hydraulic, 6-10 bar pneumatic**. Failure boundary: **Hydraulic: 250 bar burst pressure, Pneumatic: 15 bar structural failure**, Mechanism: **Hydraulic: Cavitation at 0.5 bar absolute pressure causing vapor bubble collapse and surface pitting. Pneumatic: Adiabatic compression heating exceeding 200°C causing seal degradation**.

### 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 |
| :--- | :--- | :--- | :--- |
| Hydraulic fluid contamination exceeding ISO 4406 18/16/13 cleanliness level | 8 | Spool valve stiction causing injection pressure drop below 45 bar | Install 3 μm absolute filtration with differential pressure monitoring at 2 bar |
| Piston rod misalignment exceeding 0.1 mm/m runout | 8 | Asymmetric seal wear leading to 15% force loss within 50,000 cycles | Integrate laser-aligned mounting surfaces with 0.05 mm positional tolerance |

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

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

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Hydraulic Power Unit**, **PLC Control System**, **Material Feeding System**  
**Downstream Applications**: Plastic Containers, Automotive Interior Components, Medical Device Housings  

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

### Q: What materials are injection cylinders typically made from?
**A**: Injection cylinders are commonly manufactured from hardened steel for durability, chrome-plated steel for corrosion resistance and smooth operation, or stainless steel for applications requiring high chemical resistance and hygiene standards.

### Q: What are the main components in an injection cylinder BOM?
**A**: The bill of materials for an injection cylinder typically includes: cylinder barrel, piston, piston rod, seal kit (with various seals and gaskets), and end caps. These components work together to create the linear force needed for material injection in molding systems.

### Q: How do hydraulic and pneumatic injection cylinders differ?
**A**: Hydraulic injection cylinders use pressurized fluid to generate high force with precise control, ideal for heavy-duty molding applications. Pneumatic cylinders use compressed air, offering faster operation and cleaner operation but with lower force output, suitable for lighter applications or where contamination must be minimized.

## 6. Manufacturing Compliance
- ISO 11901-1:2014 (HYDRAULIC CYLINDERS - MOUNTING DIMENSIONS)
- ANSI/B93.5M-1995 (HYDRAULIC FLUID POWER - CYLINDERS - BORE AND ROD AREA RATIOS)
- DIN 24334:1982 (HYDRAULIC CYLINDERS - SERIES 25 TO 500 BAR - MOUNTING DIMENSIONS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Injection Cylinder](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/injection-cylinder)**

### 🌐 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**: INJECTION_CYLINDER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: cf177f18
