Industry-Verified Manufacturing Data (2026)

Cylinder Barrel

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Cylinder Barrel used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Cylinder Barrel is characterized by the integration of Port Threads and Mounting Flanges. In industrial production environments, manufacturers listed on CNFX commonly emphasize Carbon Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

The main cylindrical body of a hydraulic actuator cylinder that contains the hydraulic fluid and guides the piston movement.

Product Specifications

Technical details and manufacturing context for Cylinder Barrel

Definition
The cylinder barrel is the primary structural component of a hydraulic actuator cylinder, serving as the pressure vessel that contains hydraulic fluid under pressure. It provides a precisely machined cylindrical bore that guides the piston's linear motion while maintaining fluid integrity. As the main housing, it withstands internal hydraulic pressure and external loads, ensuring precise alignment and minimal friction for efficient power transmission in hydraulic systems.
Working Principle
The cylinder barrel functions as a sealed pressure chamber where hydraulic fluid is contained. When pressurized fluid enters through ports, it creates force against the piston surface. The barrel's smooth, precision-machined interior surface minimizes friction as the piston moves, while its structural integrity maintains pressure containment and alignment throughout the operating cycle.
Common Materials
Carbon Steel, Stainless Steel, Aluminum Alloy
Technical Parameters
  • Inner diameter (bore size) of the cylinder barrel, which determines the piston area and thus the force output capability of the hydraulic actuator. (mm) Per Request
Components / BOM
  • Port Threads
    Provide connection points for hydraulic fluid inlet/outlet lines
    Material: Steel
  • Mounting Flanges
    Allow secure attachment of the cylinder to machinery or structures
    Material: Steel
  • Internal Bore Surface
    Precision-machined surface that guides piston movement with minimal friction
    Material: Hardened Steel
Engineering Reasoning
0-350 bar
420 bar (yield strength of SAE 1045 steel at 20°C)
Design Rationale: Plastic deformation due to hoop stress exceeding material yield strength, calculated by σ_h = (P × D) / (2 × t) where P=pressure, D=internal diameter, t=wall thickness
Risk Mitigation (FMEA)
Trigger Hydraulic fluid contamination with 15 μm+ particles
Mode: Internal surface scoring causing 0.1 mm deep grooves
Strategy: Install 10 μm absolute filtration with differential pressure monitoring at 3 bar
Trigger Cyclic pressure loading at 280-320 bar, 2 Hz frequency
Mode: Fatigue crack initiation at stress concentration points
Strategy: Implement finite element analysis to maintain stress concentration factor K_t < 1.5 at all geometric transitions

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cylinder Barrel.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (4500 psi)
flow rate: Dependent on bore size and velocity (typical max velocity 0.3 m/s)
temperature: -40°C to 120°C
surface finish: Ra 0.2-0.4 μm for optimal seal performance
Media Compatibility
✓ Hydraulic oil (mineral-based) ✓ Water-glycol fluids ✓ Phosphate ester fluids
Unsuitable: Highly abrasive slurries with >5% solids concentration
Sizing Data Required
  • Bore diameter (mm/in)
  • Stroke length (mm/in)
  • Operating pressure (bar/psi)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive wear
Cause: Contaminant particles in hydraulic fluid causing scoring and material removal from internal surfaces
Corrosion pitting
Cause: Moisture ingress or chemical attack leading to localized surface degradation and potential leakage paths
Maintenance Indicators
  • Visible scoring marks or discoloration on the external surface
  • Audible hissing or irregular hydraulic operation indicating internal leakage
Engineering Tips
  • Implement strict fluid filtration and contamination control with regular oil analysis
  • Maintain proper surface finish specifications and apply protective coatings where applicable

Compliance & Manufacturing Standards

Reference Standards
ISO 6020-2: Hydraulic fluid power - Mounting dimensions for single rod cylinders, 16 MPa (160 bar) series ANSI/NFPA T3.6.7 R1-2015: Fluid Power - Cylinders - Bore and Rod Diameter and Port Sizes for Square Head and Cap Mounted Cylinders DIN ISO 3320: Fluid power systems and components - Cylinder bores and piston rod diameters - Metric series
Manufacturing Precision
  • Bore diameter: H8 tolerance per ISO 286-2
  • Surface finish: Ra ≤ 0.4 μm for sealing surfaces
Quality Inspection
  • Bore straightness verification via laser alignment
  • Pressure testing to 1.5x maximum working pressure for 3 minutes

Factories Producing Cylinder Barrel

Verified manufacturers with capability to produce this product in China

✓ 95% Supplier Capability Match Found

P Project Engineer from Brazil Jan 13, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Cylinder Barrel arrived with full certification."
Technical Specifications Verified
S Sourcing Manager from Canada Jan 10, 2026
★★★★★
"Great transparency on the Cylinder Barrel components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from United States Jan 07, 2026
★★★★★
"The Cylinder Barrel we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

10 sourcing managers are analyzing this specification now. Last inquiry for Cylinder Barrel from Turkey (29m ago).

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Frequently Asked Questions

What materials are available for cylinder barrels in hydraulic actuators?

Our cylinder barrels are manufactured in carbon steel, stainless steel, and aluminum alloy to suit different industrial applications and environmental conditions.

What are the key components included in a cylinder barrel assembly?

Standard cylinder barrel assemblies include port threads for fluid connections, mounting flanges for secure installation, and precision-finished internal bore surfaces for smooth piston movement.

How does the cylinder barrel affect hydraulic system performance?

The cylinder barrel serves as the main pressure vessel containing hydraulic fluid and guides piston movement, directly impacting system efficiency, durability, and leak prevention through its material quality and bore surface finish.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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