INDUSTRY COMPONENT

Cylinder Tube

A precision cylindrical housing in pneumatic/hydraulic cylinders that guides piston movement and contains pressurized fluid.

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Component Specifications

Definition
The cylinder tube is the primary structural component of a cylinder body that forms the pressure chamber, providing a smooth bore surface for piston sealing and movement. It maintains internal pressure integrity while withstanding mechanical loads from piston forces and external mounting stresses. Critical dimensions include bore diameter, wall thickness, straightness, and surface finish to ensure proper sealing and alignment.
Working Principle
Converts fluid pressure energy into linear mechanical motion by containing pressurized air/hydraulic fluid that acts upon the piston surface. The tube's precision bore guides piston travel while maintaining pressure-tight sealing through surface finish and dimensional accuracy.
Materials
Carbon steel (ST52, S45C), stainless steel (304, 316), aluminum alloy (6061-T6), brass. Hard chrome plating (20-40μm) or nickel plating for wear/corrosion resistance. Honed ID surface finish Ra 0.2-0.8μm.
Technical Parameters
  • Straightness ≤0.1mm/m
  • Bore Diameter 10-500mm
  • Surface Finish Ra 0.2-0.8μm
  • Wall Thickness 2-25mm
  • Pressure Rating 1-35MPa
  • Temperature Range -20°C to 200°C
Standards
ISO 6020, ISO 6022, DIN 24554, JIS B8354

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Cylinder Tube.

cylinder tube hydraulic cylinder tube pneumatic cylinder tube cylinder barrel honed tube chrome plated tube ISO 6020 cylinder components Cylinder Tube in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Cylinder Body

The main structural housing of a soft-close damper that contains the piston and hydraulic fluid.

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Piston/cylinder assembly

A mechanical assembly consisting of a piston moving within a cylinder, converting fluid pressure into linear motion.

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Engineering Analysis

Risks & Mitigation
  • Internal scoring/scratching
  • Corrosion pitting
  • Wall deformation under pressure
  • Seal groove damage
  • Thread stripping at ports
FMEA Triads
Trigger: Contaminated hydraulic fluid
Failure: Internal surface scoring leading to seal leakage
Mitigation: Install proper filtration (10μm absolute), regular fluid analysis, use wiper seals
Trigger: Insufficient wall thickness for operating pressure
Failure: Tube deformation or catastrophic rupture
Mitigation: Design with 4:1 safety factor, pressure testing at 1.5× operating pressure, material certification
Trigger: Corrosive environment without proper protection
Failure: Pitting corrosion reducing pressure integrity
Mitigation: Select corrosion-resistant materials (stainless steel, proper plating), apply protective coatings, environmental controls

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Bore diameter: H8-H9, Straightness: ≤0.1mm/m, Surface finish: Ra 0.2-0.8μm
Test Method
Pressure testing (1.5× operating pressure), dimensional inspection (CMM), surface roughness measurement, material certification (mill test reports)

Buyer Feedback

★★★★☆ 4.9 / 5.0 (37 reviews)

"Testing the Cylinder Tube now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Cylinder Tube meets all ISO standards."

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Frequently Asked Questions

What is the difference between honed and chrome plated cylinder tubes?

Honed tubes have a precisely finished internal surface (Ra 0.2-0.8μm) for optimal sealing, while chrome plated tubes have a hard chromium layer (20-40μm) applied to the ID for enhanced wear and corrosion resistance. Many industrial cylinders use both processes.

How do I select the right wall thickness for a cylinder tube?

Wall thickness is determined by operating pressure, safety factor (typically 4:1), material yield strength, and bore diameter. Use Barlow's formula: t = (P × D) / (2 × S × E) where P=pressure, D=bore, S=material strength, E=efficiency factor.

What causes cylinder tube scoring and how to prevent it?

Scoring results from contamination, misalignment, inadequate lubrication, or piston seal failure. Prevention includes proper filtration (10μm or better), correct rod alignment, appropriate fluid viscosity, and regular maintenance of seals and wipers.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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Cylinder Shell Cylindrical Body