Cylinder Tube: Temperature Range -20°C to 200°C

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

Parameter	Typical range	Notes & selection driver
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

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 6020, ISO 6022, DIN 24554, JIS B8354

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

Typical Suppliers & Equivalents

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)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Cylinder Tube

Manufacturer profiles associated with Cylinder Tube.

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Related Components

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Seal Groove

Precision-machined groove in aluminum bearing housings designed to accommodate sealing elements for fluid containment and contamination prevention.

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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Cylinder Tube