Articulation Cylinders for Articulated Vehicles

Product Specifications

Technical details and manufacturing context for Articulation Cylinders

Definition

Articulation cylinders are hydraulic actuators specifically designed for articulated chassis systems, allowing controlled pivoting between connected chassis sections. They provide the mechanical force needed for steering and maintaining stability during vehicle operation, particularly in heavy-duty applications like articulated trucks, buses, and specialized off-road vehicles. These cylinders convert hydraulic pressure into linear motion, which is then translated into rotational movement at the articulation joint through mechanical linkages, enabling precise control of the angle between chassis sections. Key parameters include bore diameter (50–200 mm), stroke length (200–1000 mm), operating pressure (16–25 MPa per ISO 3320), and test pressure (1.5× operating, ISO 3320). Operating temperature ranges from -20 to 80°C, with stroke position accuracy of ±0.5 mm and leakage rate ≤0.5 mL/min per ISO 9110-2. Materials typically include high-strength steel, chromium-plated piston rods, and polyurethane seals. Seal materials may be NBR or PU (ISO 1629), and surface treatment is chromium-plated. Mounting types include clevis or trunnion. Cylinder weight ranges from 15 to 150 kg. These values are reference ranges and must be verified for the specific model and application. Always consult the legal manufacturer or supplier for exact specifications and compliance with applicable standards.

Working Principle

Hydraulic fluid is pumped into the cylinder chambers under pressure, extending or retracting the piston rod. This linear motion is converted into rotational movement at the articulation joint through mechanical linkages, enabling precise control of the angle between chassis sections. The cylinder's bore diameter and operating pressure determine the force output, while stroke length defines the articulation angle range. Seals prevent leakage and maintain efficiency, and the piston rod's surface treatment reduces friction and corrosion. Proper selection of mounting type and dimensions ensures compatibility with the vehicle's chassis design.

Common Materials

High-strength steel, Chromium-plated piston rods, Polyurethane seals

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	50–200 mm	Determines force output; larger bore for higher load capacity.
Stroke Length	200–1000 mm	Defines articulation angle range.
Operating Pressure	16–25 MPa	Higher pressure increases force but requires thicker walls.ISO 3320
Test Pressure	1.5× operating MPa	Ensures safety margin; must not exceed material yield.ISO 3320
Operating Temperature	-20–80 °C	Seals and hydraulic fluid limit range.
Stroke Position Accuracy	±0.5 mm	Critical for precise articulation control.
Leakage Rate	≤0.5 mL/min	Excessive leakage reduces efficiency and control.ISO 9110-2
Piston Rod Diameter	28–100 mm	Affects buckling strength and weight.
Cylinder Weight	15–150 kg	Important for vehicle weight distribution.
Seal Material	NBR/PU	NBR for mineral oil; PU for high wear resistance.ISO 1629
Surface Treatment	Cr-plated	Corrosion resistance and low friction.
Mounting Type	Clevis/Trunnion	Must match vehicle chassis design.

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

Components / BOM

Cylinder Barrel
Contains hydraulic fluid and guides piston movement

Material: High-strength steel
Piston Assembly
Converts hydraulic pressure into linear motion

Material: Steel with wear-resistant coating
Rod Assembly
Transmits force to articulation joint

Material: Chromium-plated steel
Seal Kit Part
Prevents hydraulic fluid leakage

Material: Polyurethane/Nitrile rubber

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Articulation Cylinders.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Articulated Chassis

View system integration details

Manufacturers of Articulation Cylinders

Manufacturer profiles associated with Articulation Cylinders.

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Frequently Asked Questions

What is the typical operating pressure range for articulation cylinders?

According to the directory reference, the operating pressure range is 16–25 MPa, per ISO 3320. However, the exact pressure rating for a specific cylinder model must be confirmed with the legal manufacturer or supplier, as it depends on the application and design.

How does the stroke length affect articulation angle?

The stroke length (200–1000 mm reference range) determines the linear travel of the piston rod, which is converted into rotational movement at the articulation joint. A longer stroke generally allows a larger articulation angle, but the exact relationship depends on the mechanical linkage design and must be verified for the specific vehicle.

What materials are commonly used in articulation cylinders?

Common materials include high-strength steel for the cylinder body, chromium-plated piston rods for corrosion resistance and low friction, and polyurethane seals for durability. Seal materials may be NBR or PU per ISO 1629. Always check with the supplier for the exact materials used in a particular model.

What maintenance signals indicate a need for inspection?

Signs such as excessive leakage (above the reference ≤0.5 mL/min per ISO 9110-2), reduced articulation precision, or visible damage to seals or rods indicate the need for inspection. Regular checks of operating temperature and pressure are also recommended. Consult the manufacturer's guidelines for specific maintenance intervals.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 350 bar (5000 psi)
flow rate:	Up to 200 L/min (53 GPM)
temperature:	-40°C to +120°C
slurry concentration:	Not recommended for slurry applications

Articulation Cylinders

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards