Structured Manufacturing Data (2026)

Hydraulic Cylinder Piston Rod

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Hydraulic Cylinder Piston Rod used in the Fabricated Metal Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Hydraulic Cylinder Piston Rod is characterized by the integration of Rod Shaft and Threaded End. In industrial production environments, manufacturers listed on CNFX commonly emphasize chromium-plated alloy steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Precision-machined rod that transmits force in hydraulic cylinders.

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Product Specifications

Technical details and manufacturing context for Hydraulic Cylinder Piston Rod

Definition
A critical load-bearing component in hydraulic cylinders that converts hydraulic pressure into linear mechanical force. It is typically manufactured from high-strength alloy steel and undergoes precision machining, hardening, and surface finishing processes. The piston rod interfaces with the cylinder barrel via seals and bearings while transmitting force to external machinery. This component is essential for industrial equipment requiring controlled linear motion under high pressure.
Working Principle
Transmits hydraulic pressure from the piston to external loads through linear motion.
Common Materials
chromium-plated alloy steel, stainless steel, hardened carbon steel
Technical Parameters
  • Rod diameter (mm) Standard Spec
  • Maximum travel distance (mm) Standard Spec
Components / BOM

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hydraulic Cylinder Piston Rod.

piston rod hydraulic rod cylinder rod hydraulic cylinder piston rod replacement chromium plated alloy steel piston rod precision machined hydraulic rod shaft hardened carbon steel cylinder rod stainless steel hydraulic piston rod

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (4350 psi)
other spec: Surface roughness: Ra ≤ 0.4 μm, Hardness: 58-62 HRC, Straightness tolerance: ≤ 0.1 mm/m
temperature: -40°C to 200°C
Media Compatibility
✓ Hydraulic oil (mineral-based) ✓ Water-glycol hydraulic fluids ✓ Phosphate ester fluids
Unsuitable: High-concentration abrasive slurries or corrosive chemical environments
Sizing Data Required
  • Required force output (kN)
  • Stroke length (mm)
  • Mounting configuration (clevis, flange, trunnion)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Abrasive wear and scoring
Cause: Contamination in hydraulic fluid (particles, debris) or inadequate rod wiper seals allowing external contaminants to enter, causing abrasive damage to the rod surface and cylinder bore.
Corrosion and pitting
Cause: Exposure to corrosive environments (moisture, chemicals) without proper surface protection (e.g., chrome plating damage), leading to material degradation and seal failure.
Maintenance Indicators
  • Visible scoring, scratches, or corrosion on the piston rod surface during inspection
  • Hydraulic fluid leakage around the rod seal or audible hissing indicating seal failure
Engineering Tips
  • Implement regular hydraulic fluid analysis and filtration maintenance to prevent contamination-induced wear
  • Ensure proper rod wiper and seal selection/installation, and apply protective boots or coatings in corrosive environments

Compliance & Manufacturing Standards

Reference Standards
ISO 6020-2: Hydraulic fluid power - Mounting dimensions for single rod cylinders, 16 MPa series ANSI/(NFPA) T3.6.7 R1-2015: Fluid power - Cylinders - Bore and rod area ratios DIN ISO 3320: Fluid power systems and components - Cylinder bores and piston rod diameters and area ratios - Metric series
Manufacturing Precision
  • Rod diameter tolerance: h9 (e.g., 50mm rod: -0.062mm to 0mm)
  • Surface finish: Ra ≤ 0.4 μm for chrome-plated rods
Quality Inspection
  • Hardness testing (Rockwell C scale) to verify surface hardening
  • Magnetic particle inspection for surface and near-surface defects

Factories Producing Hydraulic Cylinder Piston Rod

Manufacturer profiles with relevant production capability in China

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

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What materials are best for hydraulic cylinder piston rods in harsh environments?

For harsh environments, stainless steel offers excellent corrosion resistance, while chromium-plated alloy steel provides superior wear resistance and durability against abrasion and chemical exposure.

How does straightness tolerance affect hydraulic cylinder performance?

Straightness tolerance (measured in mm/m) ensures smooth operation and prevents premature seal wear. Tighter tolerances reduce friction, minimize leakage, and extend cylinder lifespan in precision applications.

What surface hardness (HRC) is recommended for heavy-duty hydraulic piston rods?

For heavy-duty applications, surface hardness of 45-60 HRC is recommended. Chromium-plated rods typically achieve 60+ HRC, providing maximum resistance to scoring, galling, and wear under high-pressure conditions.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data basis: CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks for Fabricated Metal Product Manufacturing.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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