---
title: "Small Bore Cylinder/Piston"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SMALL_BORE_CYLINDERPISTON"
  data_integrity_hash: "1128dfa7e473577424343bd961c82ca7"
  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:SMALL_BORE_CYLINDERPISTON"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/small-bore-cylinderpiston.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/small-bore-cylinderpiston"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "5-210 bar hydraulic, 0.5-10 bar pneumatic"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 250
    unit: "bar"
    consequence: "Hydraulic: Cavitation at vapor pressure &lt;0.02 bar absolute, Pneumatic: Adiabatic heating causing seal degradation at &gt;120°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Particulate contamination &gt;15 μm in hydraulic fluid"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Install 10 μm absolute filtration with differential pressure monitoring"
  - node_2:
      trigger: "Misalignment &gt;0.1 mm/m between cylinder and load"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate spherical rod end bearings with ±2° angular compensation"
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-seals:
    type: "component"
    urn: "URN:CNFX:ME:PISTON_SEALS"
    interface_type: "physical-logic-coupled"
  end-caps:
    type: "component"
    urn: "URN:CNFX:ME:END_CAPS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/small-bore-cylinderpiston.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "354e7adf39c0468113359c6502014240e52c205e6c1e0b31e136361f80289d9e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Small Bore Cylinder/Piston

## 1. Technical Definition
A precision hydraulic or pneumatic component consisting of a cylinder with a small internal diameter and a matching piston that moves within it to generate or transmit pressure.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **5-210 bar hydraulic, 0.5-10 bar pneumatic**. Failure boundary: **Hydraulic: 250 bar burst pressure, Pneumatic: 15 bar seal extrusion limit**, Mechanism: **Hydraulic: Cavitation at vapor pressure &lt;0.02 bar absolute, Pneumatic: Adiabatic heating causing seal degradation at &gt;120°C**.

### 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 |
| :--- | :--- | :--- | :--- |
| Particulate contamination &gt;15 μm in hydraulic fluid | 8 | Seal abrasion leading to internal leakage &gt;5% of rated flow | Install 10 μm absolute filtration with differential pressure monitoring |
| Misalignment &gt;0.1 mm/m between cylinder and load | 8 | Piston rod scoring causing friction increase &gt;20% from nominal | Integrate spherical rod end bearings with ±2° angular compensation |

## 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**, **Pneumatic Compressor**, **Precision Honing Machine**  
**Downstream Applications**: Hydraulic Presses, Industrial Robots, Packaging Machinery  

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

### Q: What are the typical applications for small bore cylinders in machinery manufacturing?
**A**: Small bore cylinders are used in precision control systems, compact automation equipment, valve actuators, medical devices, and instrumentation where space is limited but accurate pressure transmission is required.

### Q: How do I choose between hardened steel, stainless steel, and aluminum alloy materials?
**A**: Hardened steel offers maximum durability for high-pressure applications, stainless steel provides corrosion resistance for harsh environments, and aluminum alloy delivers lightweight performance for mobile equipment where weight reduction is critical.

### Q: What maintenance is required for small bore cylinder piston assemblies?
**A**: Regular inspection of piston seals for wear, monitoring of cylinder barrel interior for scoring, lubrication according to manufacturer specifications, and periodic replacement of end cap seals to prevent pressure leaks.

## 6. Manufacturing Compliance

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### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Small Bore Cylinder/Piston](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/small-bore-cylinderpiston)**

### 🌐 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**: SMALL_BORE_CYLINDERPISTON | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 0a0149b7
