Industry-Verified Manufacturing Data (2026)

Stopper Pusher Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Stopper Pusher Assembly 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 Stopper Pusher Assembly is characterized by the integration of Pusher Rod and Hydraulic Cylinder. In industrial production environments, manufacturers listed on CNFX commonly emphasize Chrome-plated steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical assembly that pushes stoppers into position within hydraulic systems

Product Specifications

Technical details and manufacturing context for Stopper Pusher Assembly

Definition
The Stopper Pusher Assembly is a critical component of the Hydraulic Stoppering System responsible for precisely positioning and inserting stoppers or blocking elements in hydraulic circuits. It ensures proper sealing and flow control by accurately deploying stoppers at designated locations within the system.
Working Principle
The assembly converts hydraulic pressure into linear mechanical force through a piston-cylinder mechanism. When hydraulic fluid is directed into the cylinder, it drives the piston forward, which in turn pushes the attached stopper into the desired position. The assembly typically includes return springs or reverse hydraulic circuits to retract the pusher when not engaged.
Common Materials
Chrome-plated steel, Stainless steel, High-grade seals
Technical Parameters
  • Stroke length of the pusher mechanism (mm) Per Request
Components / BOM
  • Pusher Rod
    Directly contacts and pushes the stopper into position
    Material: Chrome-plated steel
  • Hydraulic Cylinder
    Converts hydraulic pressure into linear motion
    Material: Stainless steel
  • Piston
    Transfers hydraulic force to the pusher rod
    Material: Hardened steel
  • Seal Kit
    Prevents hydraulic fluid leakage
    Material: Nitrile rubber
  • Mounting Bracket
    Secures the assembly to the hydraulic system frame
    Material: Carbon steel
Engineering Reasoning
5-210 bar hydraulic pressure, -40°C to 120°C temperature
235 bar hydraulic pressure causing seal extrusion, 135°C thermal degradation of elastomers
Design Rationale: Seal extrusion failure occurs when hydraulic pressure exceeds the seal material's extrusion resistance (Pextrusion = 1.15 × Poperational_max), thermal degradation follows Arrhenius equation with activation energy of 85 kJ/mol for nitrile rubber
Risk Mitigation (FMEA)
Trigger Hydraulic fluid contamination with 15 μm+ particulate matter
Mode: Seal abrasion leading to 0.5 mm/min leakage rate
Strategy: Install 10 μm absolute filtration with differential pressure monitoring at 0.7 bar
Trigger Cyclic pressure loading at 0.5 Hz frequency exceeding 10⁶ cycles
Mode: Piston rod fatigue fracture at stress concentration points
Strategy: Implement fillet radius optimization to maintain stress concentration factor Kt < 1.8

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Stopper Pusher Assembly.

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
flow rate: Up to 100 L/min
temperature: -20°C to 120°C
slurry concentration: Up to 15% solids by weight
Media Compatibility
✓ Hydraulic oil (ISO VG 32-68) ✓ Water-glycol fluids ✓ Phosphate ester fluids
Unsuitable: Highly abrasive slurries with >15% solids or corrosive chemicals
Sizing Data Required
  • Stopper diameter (mm)
  • Required pushing force (N)
  • System operating pressure (bar)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Misalignment-induced wear
Cause: Improper installation or thermal expansion causing misalignment between pusher and stopper surfaces, leading to uneven contact and accelerated mechanical wear.
Lubrication failure
Cause: Contaminated or degraded lubricant in sliding/rotating components, resulting in increased friction, overheating, and eventual seizure or excessive wear.
Maintenance Indicators
  • Abnormal grinding or scraping noises during operation indicating metal-on-metal contact
  • Visible misalignment or wobble in the pusher mechanism during cycling
Engineering Tips
  • Implement laser alignment verification during installation and periodic checks to ensure proper pusher-stopper interface alignment
  • Establish a strict lubrication schedule using manufacturer-recommended greases with contamination control measures and regular oil analysis

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ANSI B46.1 Surface Texture DIN 7150-1 Tolerances for Press Fits
Manufacturing Precision
  • Bore Diameter: +/-0.01mm
  • Parallelism: 0.05mm across mating surfaces
Quality Inspection
  • Dimensional Verification with CMM
  • Hardness Testing (Rockwell C scale)

Factories Producing Stopper Pusher Assembly

Verified manufacturers with capability to produce this product in China

✓ 96% Supplier Capability Match Found

T Technical Director from Australia Feb 15, 2026
★★★★★
"Found 14+ suppliers for Stopper Pusher Assembly on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Project Engineer from Singapore Feb 12, 2026
★★★★☆
"The technical documentation for this Stopper Pusher Assembly is very thorough, especially regarding technical reliability. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
S Sourcing Manager from Germany Feb 09, 2026
★★★★★
"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Stopper Pusher Assembly so far."
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.”

8 sourcing managers are analyzing this specification now. Last inquiry for Stopper Pusher Assembly from India (1h ago).

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Frequently Asked Questions

What materials are used in the stopper pusher assembly?

The assembly is constructed from durable chrome-plated steel and stainless steel components, with high-grade seals to ensure reliability in hydraulic systems.

What is included in the BOM for this assembly?

The bill of materials includes a hydraulic cylinder, mounting bracket, piston, pusher rod, and seal kit for complete assembly and maintenance.

How does the stopper pusher assembly function in hydraulic systems?

It mechanically pushes stoppers into precise positions within hydraulic systems, ensuring proper alignment and operation in machinery and equipment manufacturing.

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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