Structured Manufacturing Data (2026)

Hydraulic Cylinder / Linear Actuator

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Hydraulic Cylinder / Linear Actuator 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 Hydraulic Cylinder / Linear Actuator is characterized by the integration of Cylinder Barrel and Piston. In industrial production environments, manufacturers listed on CNFX commonly emphasize Hardened Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A hydraulic-powered mechanical device that converts fluid pressure into linear force and motion.

Product Specifications

Technical details and manufacturing context for Hydraulic Cylinder / Linear Actuator

Definition
A hydraulic cylinder, also known as a linear actuator, is a critical component within the Coil Ejection System. It provides the precise, powerful, and controlled linear force required to push or eject finished metal coils from the processing machinery onto conveyors or storage areas. Its operation is integral to automating material handling and ensuring production line efficiency.
Working Principle
Hydraulic fluid is pumped into one side of the cylinder under pressure, acting on the piston surface area. This pressure creates a force (Force = Pressure × Area) that moves the piston rod in a linear direction. The direction of movement is controlled by valving that directs fluid to either the cap end or rod end of the cylinder. The force and speed are regulated by the fluid pressure and flow rate, respectively.
Common Materials
Hardened Steel, Chrome-plated Steel Rod, Cast Iron or Steel Cylinder Barrel, Polyurethane or Nitrile Rubber Seals
Technical Parameters
  • Bore Diameter (internal cylinder diameter) and Rod Diameter, which determine the force output and structural strength. (mm) Per Request
Components / BOM
  • Cylinder Barrel
    Contains the hydraulic fluid and pressure, houses the piston assembly.
    Material: Hardened Steel or Cast Iron
  • Piston
    Seals the barrel interior and converts fluid pressure into linear force.
    Material: Hardened Steel with Seals
  • Piston Rod Part
    Transmits the linear force from the piston to the external load (ejector mechanism).
    Material: Chrome-plated High-Tensile Steel
  • End Caps Part
    Seal the ends of the barrel and often provide ports for hydraulic connections and rod guidance.
    Material: Cast Iron or Steel
  • Seals and Gaskets Part
    Prevent internal and external leakage of hydraulic fluid.
    Material: Polyurethane, Nitrile Rubber, or PTFE

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hydraulic Cylinder / Linear Actuator.

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (standard), up to 700 bar (high-pressure designs)
flow rate: Dependent on cylinder bore size and required speed, typically 5-200 L/min
temperature: -20°C to 120°C (standard seals), -40°C to 200°C (specialized seals)
slurry concentration: Not recommended for abrasive slurries; maximum 5% solids in clean hydraulic fluid
Media Compatibility
✓ Mineral-based hydraulic oil (ISO VG 32-68) ✓ Water-glycol hydraulic fluids ✓ Synthetic ester-based fluids
Unsuitable: Highly corrosive chemicals or saltwater environments without specialized coatings
Sizing Data Required
  • Required force output (kN or lbs)
  • Stroke length (mm or inches)
  • Operating pressure (bar or psi)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal leakage
Cause: Wear from contamination (particles in hydraulic fluid), improper installation, or material degradation from incompatible fluids or excessive temperatures
Rod scoring/bending
Cause: Misalignment during installation or operation, side-loading forces exceeding design limits, or inadequate rod surface hardness leading to abrasion
Maintenance Indicators
  • Visible hydraulic fluid leakage around rod seals or cylinder body
  • Audible knocking or grinding noises during operation indicating internal damage or cavitation
Engineering Tips
  • Implement strict contamination control: use proper filtration (ISO 4406 cleanliness codes), conduct regular fluid analysis, and maintain clean work environments during service
  • Ensure proper alignment and mounting: use precision alignment tools during installation, verify load paths, and install protective rod covers in harsh environments

Compliance & Manufacturing Standards

Reference Standards
ISO 6020-2: Hydraulic fluid power - Mounting dimensions for single rod cylinders, 16 MPa series ANSI/B93.5: Hydraulic fluid power - Cylinders - Dimensions and tolerances DIN ISO 3320: Fluid power systems and components - Cylinder bores and piston rod diameters - Metric series
Manufacturing Precision
  • Bore diameter: ±0.02 mm
  • Piston rod straightness: 0.1 mm per meter
Quality Inspection
  • Pressure test: 1.5x rated pressure for 5 minutes
  • Dimensional verification: CMM measurement of critical features

Factories Producing Hydraulic Cylinder / Linear Actuator

Manufacturer profiles with relevant production capability in China

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are used in your hydraulic cylinders for maximum durability?

Our hydraulic cylinders feature hardened steel construction, chrome-plated steel rods, cast iron or steel cylinder barrels, and polyurethane or nitrile rubber seals for superior wear resistance and longevity in demanding industrial environments.

What maintenance do hydraulic linear actuators require?

Regular inspection of seals and gaskets, monitoring fluid levels and cleanliness, checking for rod scoring or corrosion, and ensuring proper alignment are essential. Seal replacement is typically needed before failure to prevent fluid leaks and maintain performance.

Can you customize hydraulic cylinders for specific machinery applications?

Yes, we offer customization of bore sizes, stroke lengths, mounting styles, port configurations, and materials to match your equipment's force requirements, space constraints, and operating conditions in machinery manufacturing.

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.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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