INDUSTRY COMPONENT

Cylinder housing

Cylinder housing is the structural enclosure for hydraulic or pneumatic actuators, providing pressure containment and mounting interface.

Component Specifications

Definition
A cylinder housing is the primary structural component of linear actuators (hydraulic/pneumatic pistons, wedges) that forms the pressure vessel containing the working fluid. It provides precise bore geometry for piston movement, incorporates porting for fluid entry/exit, includes mounting features for installation, and maintains pressure integrity under operational loads. The housing serves as the foundation for the entire actuator assembly, ensuring alignment of internal components and protection from environmental factors.
Working Principle
The cylinder housing operates by containing pressurized fluid (hydraulic oil or compressed air) within its bore, creating a sealed chamber that converts fluid pressure into linear mechanical force through piston movement. It maintains structural integrity under cyclic pressure loads while providing precise guidance for the piston rod.
Materials
Carbon steel (ASTM A36, AISI 1045), stainless steel (304, 316), aluminum alloys (6061-T6), ductile iron (65-45-12). Surface treatments: Hard chrome plating, nitriding, powder coating.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Port Size1/4" to 2" NPT/SAE/BSP
Bore Diameter25-500 mm
Stroke LengthCustomizable per application
Mounting StyleFoot, flange, trunnion, clevis
Surface FinishRa 0.4-0.8 μm (bore)
Pressure RatingUp to 350 bar (hydraulic), 16 bar (pneumatic)
Straightness Tolerance0.01 mm per 100 mm

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 6020-2, ISO 15552, DIN 24554, NFPA T3.6.7

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Pressure vessel failure
  • Bore scoring leading to seal damage
  • Corrosion in harsh environments
  • Fatigue cracking at mounting points
  • Thermal expansion mismatch
FMEA Triads
Trigger: Material defect or improper heat treatment
Failure: Catastrophic rupture under pressure
Mitigation: Material certification, hydrostatic testing at 1.5x operating pressure, regular NDT inspection
Trigger: Contaminated fluid or inadequate filtration
Failure: Bore scoring and seal degradation
Mitigation: Install proper filtration (10 μm for hydraulic, 40 μm for pneumatic), regular fluid analysis
Trigger: Misalignment during installation
Failure: Premature wear and binding
Mitigation: Use precision alignment tools, follow mounting torque specifications, install flexible couplings

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Bore diameter: H8/H9, Straightness: 0.01 mm/100 mm, Surface roughness: Ra 0.4-0.8 μm
Test Method
Hydrostatic pressure test (1.5x max operating pressure), bore geometry verification with air gauging, surface finish measurement with profilometer, material certification per ASTM/EN standards

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 housing

Manufacturer profiles associated with Cylinder housing.

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Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.
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Frequently Asked Questions

What is the difference between hydraulic and pneumatic cylinder housings?

Hydraulic housings are designed for higher pressure (typically 70-350 bar) with thicker walls and premium materials, while pneumatic housings operate at lower pressures (typically 6-16 bar) with lighter construction and often aluminum materials.

How do I select the right cylinder housing material?

Consider operating pressure (steel for high pressure, aluminum for lightweight), corrosion environment (stainless for corrosive conditions), temperature range, and compatibility with hydraulic fluids or lubricants.

What maintenance does a cylinder housing require?

Regular inspection for external damage, checking for bore scoring or corrosion, ensuring mounting bolts remain tight, and verifying port connections remain leak-free. Periodic replacement of seals is needed but the housing itself typically lasts the equipment lifetime.

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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