Editorial Technical Reference

Actuator Cylinder

This page explains how Actuator Cylinder is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical component that converts fluid power into linear motion within an actuation system.

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Actuator Cylinder in a manufacturing environment
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Product Specifications

Technical details and manufacturing context for Actuator Cylinder

Definition
An actuator cylinder is a key component in actuation mechanisms that uses pressurized fluid (hydraulic or pneumatic) to generate controlled linear force and motion. It typically consists of a cylindrical barrel, piston, piston rod, and seals, and serves as the primary force-generating element in various industrial automation and machinery systems. The cylinder operates by admitting pressurized fluid into one side of the piston, creating a pressure differential that moves the piston and attached rod linearly. Direction is controlled by directional control valves that route fluid to either side. Actuator cylinders are available in a range of configurations and sizes, with bore diameters from 32 to 320 mm and stroke lengths from 25 to 2000 mm, per ISO 15552. Operating pressure typically ranges from 0.1 to 1.0 MPa, with piston speeds from 50 to 500 mm/s. Operating temperature is limited by seal materials, typically -20 to 80°C. Common materials include carbon steel, stainless steel, and aluminum alloy. Cylinder body materials may be aluminum or stainless steel, and seal materials range from NBR to FKM. Mounting types (MF1–MF6), cushioning types (P1–P5), and thread types (M10–M36) follow ISO 15552. Piston rod diameters range from 12 to 140 mm, and weights vary from 0.5 to 150 kg depending on size and material. These specifications are reference ranges; actual values must be confirmed with the manufacturer for the specific model and application. Always verify compliance with applicable standards and ensure proper selection based on load, speed, and environmental conditions.
Working Principle
Pressurized fluid enters the cylinder chamber, creating a pressure differential across the piston. This pressure differential generates force on the piston surface, causing the piston rod to extend or retract linearly. The direction of motion is controlled by fluid flow direction via valves. The force produced is proportional to the effective piston area and the pressure difference. Speed is governed by flow rate and load. Seals prevent leakage and maintain pressure integrity. Cushioning at stroke ends absorbs kinetic energy to reduce impact.
Common Materials
Carbon Steel, Stainless Steel, Aluminum Alloy
Technical Parameters
ParameterTypical rangeNotes & selection driver
Bore Diameter32–320 mmStandard sizes per ISO 15552ISO 15552
Stroke Length25–2000 mmCustom strokes availableISO 15552
Operating Pressure0.1–1.0 MPaBelow 0.1 MPa may cause stickingISO 15552
Piston Speed50–500 mm/sHigher speeds require cushioning
Operating Temperature-20–80 °CSeals limit range
Cushioning TypeP1–P5Adjustable cushioning standardISO 15552
Piston Rod Diameter12–140 mmMatched to bore sizeISO 15552
Thread TypeM10–M36Metric threads standardISO 15552
Mounting TypeMF1–MF6Multiple mounting optionsISO 15552
Seal MaterialNBR–FKMFKM for high temp
Cylinder Body MaterialAL–SSAluminum or stainless steel
Weight0.5–150 kgDepends on size and material

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
    Houses piston and fluid, provides structural integrity
    Material: Steel or Aluminum
  • Piston
    Separates fluid chambers, transmits force to rod
    Material: Steel with Seals
  • Piston Rod Part
    Transmits linear force to external mechanism
    Material: Hardened Steel
  • End Caps Part
    Seal cylinder ends, provide mounting points
    Material: Steel or Cast Iron
  • Seals Part
    Prevent fluid leakage between chambers
    Material: Polyurethane or Nitrile Rubber
  • Cushion Assembly
    Absorbs the kinetic energy at each stroke end so the cylinder is not hammered by its own motion.

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (4350 psi)
flow rate: Up to 100 L/min (26.4 GPM)
temperature: -40°C to +120°C
slurry concentration: Not recommended for slurry applications
Media Compatibility
✓ Hydraulic oil (ISO VG 32-68) ✓ Water-glycol fluids ✓ Phosphate ester fluids
Unsuitable: Saltwater or corrosive chemical environments
Sizing Data Required
  • Required force output (N or lbf)
  • Stroke length (mm or inches)
  • Operating pressure (bar or psi)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal degradation
Cause: Chemical incompatibility with hydraulic fluid or contaminants leading to hardening, cracking, or swelling of elastomeric seals
Rod scoring
Cause: Abrasive particles in hydraulic fluid or misalignment causing metal-to-metal contact and wear on the piston rod surface
Maintenance Indicators
  • Visible hydraulic fluid leakage around rod seals or cylinder body connections
  • Audible knocking or scraping sounds during operation indicating internal component wear or misalignment
Engineering Tips
  • Implement proactive fluid analysis and filtration to maintain ISO cleanliness codes below recommended levels (typically ISO 18/16/13)
  • Establish proper cylinder alignment procedures during installation and use rod wipers/scrapers to prevent external contamination ingress

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 15552: Pneumatic fluid power - Standard cylinders - Mounting dimensions ANSI/NFPA T3.6.7: Fluid Power - Cylinders - Bore and Rod Diameters and Port Sizes DIN ISO 6432: Pneumatic fluid power - Single rod cylinders, 10 bar (1 000 kPa) series - Mounting dimensions

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: ±0.02 mm
  • Rod straightness: 0.1 mm per 1000 mm length
Quality Inspection
  • Pressure testing (leakage and burst)
  • Dimensional verification with CMM
Technical documentation
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Manufacturing capability
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Inspection readiness
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Supplier transparency
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Manufacturers of Actuator Cylinder

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Frequently Asked Questions

What is the typical bore diameter range for actuator cylinders?

According to the directory, bore diameters range from 32 to 320 mm, per ISO 15552. However, the exact bore size for a specific application must be confirmed with the manufacturer.

What operating pressures are common?

The typical operating pressure range is 0.1 to 1.0 MPa. Pressures below 0.1 MPa may cause sticking. Always verify the pressure rating for the specific cylinder model.

What materials are used for actuator cylinders?

Common materials include carbon steel, stainless steel, and aluminum alloy. Cylinder body materials may be aluminum or stainless steel, and seal materials range from NBR to FKM. Confirm material suitability for your environment.

How do I select the right mounting type?

Mounting types are designated MF1 to MF6 per ISO 15552. The choice depends on the application's mounting requirements. Consult the manufacturer's documentation to ensure compatibility.

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

Related equipment

Applied To / Applications

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

Actuation Mechanism
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Counterbalance System
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Container Lock System
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Industrial Ecosystem & Supply Chain Structure

Data Basis

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

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.

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 · Page last updated 12 October 2026

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