INDUSTRY COMPONENT

Cylinder Barrel/Tube

Cylinder barrel is the main structural housing of hydraulic or pneumatic cylinders that contains pressurized fluid and guides piston movement.

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Component Specifications

Definition
The cylinder barrel, also called cylinder tube, is the primary pressure-containing component in hydraulic and pneumatic actuators. It serves as the cylindrical housing that encloses the piston assembly, maintains fluid pressure integrity, provides precise internal surface for piston sealing and movement, and transfers mechanical loads between mounting points. In lift cylinders, it withstands axial forces from hydraulic pressure while maintaining dimensional stability under varying loads and temperatures.
Working Principle
The cylinder barrel operates by containing pressurized hydraulic fluid or compressed air that acts upon the piston surface. Pressure differential across the piston creates linear force, while the barrel's precision-bored interior provides low-friction guidance for piston movement and maintains seal integrity through smooth surface finish and dimensional accuracy.
Materials
Cold-drawn seamless steel tubing (ASTM A519), honed to Ra 0.2-0.4 μm surface finish; Chrome-plated carbon steel for corrosion resistance; Aluminum alloys (6061-T6) for lightweight applications; Stainless steel (304/316) for corrosive environments
Technical Parameters
  • Length 200-3000 mm
  • Bore Diameter 50-500 mm
  • Surface Finish Ra 0.2-0.4 μm
  • Wall Thickness 6-40 mm
  • Pressure Rating Up to 350 bar
  • Roundness Tolerance IT7-IT8
  • Straightness Tolerance 0.1 mm/m
Standards
ISO 6020-2, DIN 24554, ISO 4394-1, DIN 2391

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cylinder Barrel/Tube.

hydraulic cylinder barrel cylinder tube actuator housing honed tubing pressure vessel lift cylinder component hydraulic actuator part Cylinder Barrel/Tube Cylinder Barrel/Tube in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Lift Cylinder / Actuator

A hydraulic or pneumatic cylinder that provides the linear lifting force for the ladle in the lift and seal mechanism.

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Engineering Analysis

Risks & Mitigation
  • Internal corrosion from contaminated fluid
  • Wear from abrasive particles
  • Fatigue cracking at high-cycle applications
  • Deformation under extreme pressure
  • Seal groove damage during assembly
FMEA Triads
Trigger: Contaminated hydraulic fluid
Failure: Abrasive wear and scoring of internal surface
Mitigation: Implement proper filtration systems (10 μm or finer), regular fluid analysis, and use of hard-chrome plating
Trigger: Excessive side loading
Failure: Premature wear and binding of piston
Mitigation: Proper cylinder alignment, use of external guides, and selection of appropriate mounting styles

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Bore diameter: H8/H9, Straightness: 0.1 mm/m max, Surface roughness: Ra ≤ 0.4 μm
Test Method
Hydrostatic pressure test per ISO 2944, dimensional verification per ISO 6020-2, surface roughness measurement per ISO 4287

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

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 surface finish is required for cylinder barrels?

Cylinder barrels require honed interior surfaces with Ra 0.2-0.4 μm finish to ensure proper seal performance and minimize friction during piston movement.

How are cylinder barrels tested for pressure integrity?

Cylinder barrels undergo hydrostatic pressure testing at 1.5 times maximum working pressure, along with dimensional inspection, surface finish measurement, and material certification per ISO 6020 standards.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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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Cylinder Barrel (Hydraulic) Cylinder Body