INDUSTRY COMPONENT

Outer Cylinder Tube

Outer cylinder tube is the primary structural housing in gas lift cylinders that contains internal components and withstands operational pressures.

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Component Specifications

Definition
The outer cylinder tube is a precision-engineered cylindrical component that serves as the main pressure vessel in gas lift cylinder assemblies. It provides structural integrity, contains the piston rod and internal seals, and withstands both static and dynamic loads during compression and extension cycles. This component ensures proper alignment of internal parts while maintaining pressure integrity throughout the service life.
Working Principle
The outer cylinder tube functions as a pressure containment vessel that houses the piston assembly and hydraulic fluid or gas. During operation, it maintains structural stability while internal pressure changes cause the piston rod to extend or retract. The tube's dimensional accuracy ensures proper seal engagement and prevents leakage while withstanding bending moments and axial loads.
Materials
Typically manufactured from cold-drawn seamless steel tubing (ASTM A519), aluminum alloys (6061-T6), or stainless steel (304/316). Common specifications include: yield strength 250-550 MPa, hardness 80-95 HRB, surface finish Ra 0.4-0.8 μm.
Technical Parameters
  • OD_range 25-200 mm
  • wall_thickness 2-12 mm
  • pressure_rating 10-30 MPa
  • length_tolerance ±0.5 mm
  • surface_roughness Ra 0.4-0.8 μm
  • straightness_tolerance 0.1 mm/m
Standards
ISO 6020-2, DIN 24334, ISO 3320, DIN 2391

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Outer Cylinder Tube.

cylinder tube gas lift cylinder hydraulic cylinder tube pressure vessel seamless tubing DIN 2391 ISO 6020 Outer Cylinder Tube Outer Cylinder Tube in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Gas Lift Cylinder

A pneumatic device that controls the height adjustment of an office chair seat.

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Engineering Analysis

Risks & Mitigation
  • Internal corrosion leading to pressure failure
  • Dimensional wear causing seal leakage
  • Fatigue cracking at mounting points
  • Material defects in seamless tubing
FMEA Triads
Trigger: Inadequate surface finish or dimensional accuracy
Failure: Premature seal wear and hydraulic fluid leakage
Mitigation: Implement statistical process control for honing operations and 100% dimensional inspection
Trigger: Material impurities in seamless tubing
Failure: Catastrophic pressure vessel failure during operation
Mitigation: Ultrasonic testing of raw material and hydrostatic testing of finished tubes

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
ISO 2768-mK for general dimensions, ISO 286-2 for hole basis fits (H8 recommended)
Test Method
Hydrostatic pressure testing per ISO 10763, dimensional verification per ISO 1101, surface roughness per ISO 4287

Buyer Feedback

★★★★☆ 4.7 / 5.0 (16 reviews)

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Outer Cylinder Tube so far."

"Testing the Outer 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."

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Frequently Asked Questions

What are the most critical tolerances for outer cylinder tubes?

Internal diameter tolerance (±0.025 mm), straightness (0.1 mm/m), and surface finish (Ra 0.4-0.8 μm) are most critical for proper seal function and longevity.

Can aluminum outer tubes replace steel in gas lift applications?

Yes, aluminum alloys (6061-T6) are suitable for lighter duty applications but require thicker walls to achieve equivalent pressure ratings to steel tubes.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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