Editorial Technical Reference

Hydraulic Cylinders (if hydraulic)

This page explains how Hydraulic Cylinders (if hydraulic) 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

Hydraulic actuators that provide linear force and motion for attachment/detachment operations in quick-attach systems.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Hydraulic Cylinders (if hydraulic)

Definition
Hydraulic cylinders are critical components within quick-attach systems that generate the precise linear force required for securely locking and releasing attachments. They convert hydraulic pressure into mechanical motion to engage/disengage coupling mechanisms, ensuring rapid and reliable tool changes on equipment like excavators, loaders, and agricultural machinery. These cylinders are designed as part of a hydraulic circuit, typically powered by the host machine's hydraulic system. The cylinder's bore diameter, stroke length, and operating pressure determine its force output and range of motion. Common specifications include bore diameters from 40 to 200 mm, stroke lengths from 50 to 1000 mm, and operating pressures from 10 to 21 MPa, resulting in force outputs from 12 to 400 kN. Piston rod diameters range from 20 to 100 mm, affecting buckling strength. Materials typically include chromium-plated steel for rods, hardened steel for cylinders, bronze alloys for bearings, and polyurethane seals. Operating temperature ranges from -20 to 80°C, and ingress protection ratings from IP65 to IP67 are common for dusty or wet environments. Mounting types include clevis, flange, and foot, per ISO 6982. Cylinder material is often carbon steel (SAE 1020) per ASTM A106, and piston rod material is hard chrome plated steel (SAE 1045) per ASTM A29. Seal material is typically NBR for mineral oils, per ISO 1629. Weight varies from 5 to 150 kg depending on size. These cylinders are integral to quick-attach systems, enabling operators to change attachments without leaving the cab, improving efficiency and safety. Proper selection requires verifying bore, stroke, pressure, mounting style, and environmental conditions with the manufacturer. Regular maintenance includes checking seals, rod surface, and hydraulic fluid. Failure modes include seal wear, rod scoring, and internal leakage, which can lead to loss of holding force. Always consult the legal manufacturer for model-specific values and standards compliance.
Working Principle
Hydraulic fluid under pressure enters the cylinder chamber, acting on the piston surface to create linear force. This force extends or retracts the piston rod, which directly operates the quick-attach locking mechanism. Directional control valves manage fluid flow for precise movement control. The cylinder's bore diameter and operating pressure determine the force generated, while the stroke length defines the travel distance. Seals prevent leakage and maintain pressure integrity.
Common Materials
Chromium-plated steel, Hardened steel, Bronze alloys, Polyurethane seals
Technical Parameters
ParameterTypical rangeNotes & selection driver
Bore Diameter40–200 mmDetermines force outputISO 6020-2
Stroke Length50–1000 mmCustom lengths available
Operating Pressure10–21 MPaHigher pressure increases forceISO 3320
Force Output12–400 kNCalculated from bore and pressure
Piston Rod Diameter20–100 mmAffects buckling strengthISO 6195
Operating Temperature-20–80 °CSeals limit range
Ingress ProtectionIP65–IP67For dusty/wet environmentsIEC 60529
Cylinder MaterialSAE 1020Carbon steel standardASTM A106
Piston Rod MaterialSAE 1045Hard chrome platedASTM A29
Seal MaterialNBRFor mineral oilsISO 1629
Weight5–150 kgDepends on size
Mounting TypeClevis, flange, footSelect per applicationISO 6982

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: Chromium-plated steel
  • Piston
    Separates pressure chambers and transmits force to rod
    Material: Hardened steel
  • Piston Rod Part
    Transmits linear force to quick-attach mechanism
    Material: Hardened chromium-plated steel
  • Rod Gland Part
    Seals rod exit point and supports rod alignment
    Material: Bronze alloy
  • Hydraulic Ports Part
    Connection points for hydraulic fluid lines
    Material: Steel with brass fittings

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hydraulic Cylinders (if hydraulic).

Applied To / Applications

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

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

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 ✓ Synthetic ester-based fluids
Unsuitable: Saltwater or marine environments without special coatings
Sizing Data Required
  • Required force output (kN or lbf)
  • Stroke length (mm or inches)
  • Operating pressure (bar or psi)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal leakage
Cause: Wear from contamination, improper installation, or material degradation due to incompatible fluids or excessive temperatures
Rod scoring or pitting
Cause: Contaminant ingress (e.g., dirt, metal particles) in hydraulic fluid, inadequate rod wiper seals, or misalignment causing side loading
Maintenance Indicators
  • Visible external hydraulic fluid leakage around seals or rod
  • Audible knocking or chattering during operation, indicating cavitation or air in the system
Engineering Tips
  • Implement strict fluid cleanliness protocols (e.g., ISO 4406 standards) and regular fluid analysis to prevent contamination-induced wear
  • Ensure proper cylinder alignment during installation and use rod boots or bellows in harsh environments to protect against abrasive contaminants

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 6020-2: Hydraulic fluid power - Mounting dimensions for single rod cylinders, 16 MPa series ANSI/(NFPA) T3.6.7: Fluid Power - Cylinders - Method of Testing Basic Performance DIN ISO 3320: Fluid power systems and components - Cylinder bores and piston rod diameters - Metric series

Quoted from the published standard.

Manufacturing Precision
  • Bore diameter: H8 tolerance (e.g., 100mm bore: +0.054mm/0mm)
  • Piston rod diameter: f7 tolerance (e.g., 70mm rod: -0.030mm/-0.060mm)
Quality Inspection
  • Pressure test: 1.5x maximum working pressure for 2 minutes (no leakage)
  • Hardness test: Brinell/Rockwell on piston rod and cylinder barrel surfaces

Manufacturers of Hydraulic Cylinders (if hydraulic)

7 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jinan Huachen Industrial Co., Ltd.
Shandong, CN
Founded 199836,000 m²
ISO9001 CE
Listed on the company's own website · profile compiled by CNFX from public sources
Datong Hoidings Co., Limited
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Flutec Hydraulics
Wuxi, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Junda Intelligent Equipment
Chongqing, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Machinesol
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Wuxi Hengshui Machinery Co., Ltd.
Tianjin, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Zhejiang Huanfeng Machinery Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
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Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
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Frequently Asked Questions

What bore diameter and stroke length are available?

Bore diameters range from 40 to 200 mm, and stroke lengths from 50 to 1000 mm. Custom lengths may be available. Confirm exact dimensions with the manufacturer for your application.

What is the maximum operating pressure?

Operating pressure ranges from 10 to 21 MPa. Higher pressure increases force output, but the cylinder must be rated for that pressure. Verify the pressure rating with the manufacturer.

What mounting types are offered?

Mounting types include clevis, flange, and foot, per ISO 6982. The choice depends on the application and installation space. Select the appropriate type per your system design.

What materials are used for seals and rods?

Seals are typically NBR for mineral oils, per ISO 1629. Piston rods are hard chrome plated steel (SAE 1045) per ASTM A29. Cylinder material is often carbon steel (SAE 1020) per ASTM A106. Confirm material compatibility with your hydraulic fluid.

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.
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