Structured Manufacturing Data (2026)

Clamping Cylinder / Actuator

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Clamping Cylinder / Actuator used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Clamping Cylinder / Actuator is characterized by the integration of Cylinder Barrel and Piston. In industrial production environments, manufacturers listed on CNFX commonly emphasize Chrome-plated steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Hydraulic or pneumatic cylinder that provides the clamping force in a mold box clamping system

Product Specifications

Technical details and manufacturing context for Clamping Cylinder / Actuator

Definition
A clamping cylinder or actuator is a critical component within a mold box clamping system that generates and applies the necessary force to securely hold mold halves together during injection molding, die casting, or other manufacturing processes. It ensures proper mold closure, prevents flash formation, and maintains consistent pressure throughout the production cycle.
Working Principle
The clamping cylinder operates by converting hydraulic or pneumatic pressure into linear mechanical force. When pressurized fluid enters the cylinder chamber, it pushes against a piston, which extends a rod to apply clamping force to the mold. The system typically includes control valves to regulate pressure and flow for precise force application and release.
Common Materials
Chrome-plated steel, Cast iron, Sealing materials (polyurethane, nitrile rubber)
Technical Parameters
  • Bore diameter of the cylinder, determining force output capacity (mm) Standard Spec
Components / BOM
  • Cylinder Barrel
    Houses the piston and contains pressurized fluid
    Material: Chrome-plated steel
  • Piston Part
    Converts fluid pressure into linear force
    Material: Hardened steel
  • Piston Rod Part
    Transmits clamping force to the mold
    Material: Chrome-plated steel
  • Seals Part
    Prevent fluid leakage between moving parts
    Material: Polyurethane or nitrile rubber
  • Mounting Flange Part
    Secures the cylinder to the clamping system frame
    Material: Cast iron or steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Clamping Cylinder / Actuator.

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 hydraulic, 10 bar pneumatic
other spec: Flow rate: 5-100 L/min hydraulic, 100-1000 NL/min pneumatic; Slurry concentration: Not applicable (sealed system)
temperature: -20°C to 120°C
Media Compatibility
✓ Hydraulic oil (ISO VG 32-68) ✓ Compressed air (filtered, lubricated) ✓ Water-glycol hydraulic fluids
Unsuitable: Corrosive chemical environments (acids, chlorides)
Sizing Data Required
  • Required clamping force (kN)
  • Available hydraulic/pneumatic pressure (bar)
  • Stroke length (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Seal degradation
Cause: Chemical incompatibility with hydraulic fluid or contaminants, leading to swelling, hardening, or cracking of seals, resulting in internal or external leaks.
Rod scoring or pitting
Cause: Ingress of abrasive particles due to inadequate wiper seals or contaminated fluid, causing wear on the rod surface and potential seal damage.
Maintenance Indicators
  • Audible hissing or squealing during operation indicating air entrainment or seal leakage
  • Visible hydraulic fluid leaks around rod seals or cylinder body connections
Engineering Tips
  • Implement regular fluid analysis and filtration to maintain fluid cleanliness, preventing abrasive wear and contamination-related failures.
  • Ensure proper rod alignment and mounting to minimize side loads, reducing uneven wear on seals and rod surfaces.

Compliance & Manufacturing Standards

Reference Standards
ISO 15552: Pneumatic cylinders - Mounting dimensions and accessories ANSI/B93.5M: Hydraulic fluid power - Cylinders - Bore and rod area ratios DIN ISO 6431: Pneumatic cylinders - Mounting dimensions and accessories
Manufacturing Precision
  • Bore diameter: +/-0.02mm
  • Rod straightness: 0.05mm per 300mm length
Quality Inspection
  • Pressure test: 1.5x rated pressure for 2 minutes
  • Dimensional verification: Critical dimensions per engineering drawings

Factories Producing Clamping Cylinder / Actuator

Manufacturer profiles with relevant production capability in China

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 used in your clamping cylinders for durability?

Our clamping cylinders feature chrome-plated steel barrels, cast iron components, and high-quality polyurethane or nitrile rubber seals for maximum durability and corrosion resistance in industrial environments.

How do I choose between hydraulic and pneumatic clamping cylinders?

Hydraulic cylinders provide higher clamping forces for heavy-duty applications, while pneumatic cylinders offer faster operation and cleaner operation. Selection depends on your specific force requirements, speed needs, and facility infrastructure.

What maintenance is required for mold box clamping cylinders?

Regular inspection of seals for wear, monitoring of piston rod surfaces for damage, and ensuring proper lubrication of moving parts. Seal replacement intervals depend on operating cycles and environmental 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.

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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