Industry-Verified Manufacturing Data (2026)

Clamping Cylinder / Actuator

Based on aggregated insights from multiple verified 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
    Converts fluid pressure into linear force
    Material: Hardened steel
  • Piston Rod
    Transmits clamping force to the mold
    Material: Chrome-plated steel
  • Seals
    Prevent fluid leakage between moving parts
    Material: Polyurethane or nitrile rubber
  • Mounting Flange
    Secures the cylinder to the clamping system frame
    Material: Cast iron or steel
Engineering Reasoning
Hydraulic: 50-350 bar, Pneumatic: 6-10 bar
Hydraulic: 400 bar yield pressure for steel cylinders, Pneumatic: 12 bar burst pressure for aluminum cylinders
Design Rationale: Hydraulic: Cavitation at 0.5 bar absolute pressure causing vapor bubble collapse and pitting. Pneumatic: Adiabatic compression heating exceeding 200°C causing seal degradation
Risk Mitigation (FMEA)
Trigger Particulate contamination exceeding ISO 4406 18/16/13 cleanliness level
Mode: Spool valve stiction causing 500ms response delay
Strategy: Install 10μm absolute beta₃≥200 filter with differential pressure monitoring
Trigger Hydraulic fluid temperature exceeding 65°C for mineral oil
Mode: Seal hardening leading to 0.1mm/s creep at 300 bar
Strategy: Integrate Peltier cooling maintaining 40±2°C fluid temperature

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 DNA

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

Verified manufacturers with capability to produce this product in China

✓ 97% Supplier Capability Match Found

T Technical Director from Canada Feb 19, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Project Engineer from United States Feb 16, 2026
★★★★☆
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Clamping Cylinder / Actuator meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Feb 13, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Clamping Cylinder / Actuator arrived with full certification."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

18 sourcing managers are analyzing this specification now. Last inquiry for Clamping Cylinder / Actuator from Poland (55m ago).

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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.

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