INDUSTRY COMPONENT

Cylinder Body

The cylinder body is the main structural housing of a damping cylinder that contains the piston and hydraulic fluid, providing pressure containment and mounting interface.

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Component Specifications

Definition
A cylinder body in a damping cylinder is a precision-engineered tubular housing typically made from high-strength materials like steel or aluminum alloys. It serves as the primary pressure vessel that contains hydraulic fluid and guides the piston's linear motion. The body features precisely machined inner surfaces (bore) with specific surface finishes to minimize friction and ensure proper sealing with piston rings or seals. It includes threaded ports for fluid connections, mounting brackets or flanges for installation, and often incorporates cooling fins or channels for thermal management. The cylinder body must maintain structural integrity under cyclic pressure loads while providing accurate alignment for the piston rod.
Working Principle
The cylinder body operates as a sealed pressure chamber where hydraulic fluid is contained. When pressurized fluid enters through inlet ports, it creates force against the piston inside the body, converting hydraulic energy into linear mechanical motion. The body's precisely machined interior surface guides the piston while maintaining pressure integrity through sealing systems. In damping applications, the body contains specialized valves or orifices that control fluid flow to create controlled resistance to motion.
Materials
Common materials include: 1. Carbon steel (ASTM A36, AISI 1045) for high-pressure applications, 2. Stainless steel (304, 316) for corrosive environments, 3. Aluminum alloys (6061-T6, 7075) for weight-sensitive applications, 4. Brass or bronze for specific fluid compatibility. Materials are selected based on pressure rating (typically 150-3000 PSI), corrosion resistance, weight requirements, and cost considerations.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Port Size1/8" to 1" NPT or SAE
Bore Diameter25-200 mm
Stroke Length50-1000 mm
Mounting StyleFoot, Flange, Trunnion, Clevis
Surface FinishRa 0.4-1.6 μm
Pressure Rating150-3000 PSI
Operating Temperature-20°C to 120°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, DIN 24334, NFPA T3.6.7

Parent Products

This component is used in the following industrial products

Soft-Close Damper

A hydraulic or pneumatic damping device that slows and quiets the final closing motion of a drawer.

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Damping Cylinder

A hydraulic or pneumatic cylinder that provides controlled resistance to slow down the closing motion of furniture hinges.

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Sealing Actuator

A mechanical or electromechanical device that provides the controlled force and motion required to engage and disengage sealing surfaces in an automatic sealing system.

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Engineering Analysis

Risks & Mitigation
  • Internal corrosion from contaminated fluid
  • Bore scoring from particulate contamination
  • Fatigue cracking at stress concentration points
  • Thread damage at port connections
  • Thermal expansion mismatch with other components
FMEA Triads
Trigger: Contaminated hydraulic fluid
Failure: Abrasive wear and scoring of internal bore surface
Mitigation: Implement proper filtration (10 micron or better), regular fluid analysis, and use of wear-resistant coatings
Trigger: Improper mounting alignment
Failure: Side loading causing premature seal wear and rod bending
Mitigation: Use flexible mounting couplings, ensure proper alignment during installation, and incorporate guide bearings
Trigger: Cyclic pressure exceeding design limits
Failure: Fatigue cracking near port connections or mounting points
Mitigation: Incorporate pressure relief valves, design with adequate safety factor (minimum 4:1), and conduct regular pressure testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Bore diameter: H8/H9 tolerance, Straightness: 0.05 mm per 300 mm, Circularity: 0.01 mm
Test Method
Hydrostatic pressure test at 1.5x maximum working pressure for 2 minutes, Leakage test with helium at design pressure, Surface roughness measurement with profilometer, Dimensional verification with CMM

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Cylinder Body

Manufacturer profiles associated with Cylinder Body.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between cylinder body and cylinder barrel?

Cylinder body refers to the complete assembled housing including mounting features and ports, while cylinder barrel specifically denotes the tubular section that contains the piston. In industrial terminology, 'body' is more comprehensive.

How often should cylinder bodies be inspected?

Regular visual inspections every 6 months, with detailed internal inspection including bore measurement and surface finish check every 2 years or 10,000 operating hours, whichever comes first.

Can aluminum cylinder bodies be used with hydraulic oil?

Yes, aluminum alloys like 6061-T6 are commonly used with hydraulic fluids, but compatibility must be verified with specific fluid types, and anodizing or hard coating is often applied for wear resistance.

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.

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