Structured Manufacturing Data (2026)

Disc Stack

Based on aggregated insights from structured factory profiles within the CNFX directory, the standard Disc Stack 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 Disc Stack is characterized by the integration of Conical Disc and Spacer Ring. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless steel (304/316L) construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A stack of conical discs within a separation bowl that provides the surface area for centrifugal separation of immiscible liquids or solids from liquids.

Product Specifications

Technical details and manufacturing context for Disc Stack

Definition
The disc stack is the core separation element within a centrifugal separation bowl, consisting of multiple thin, conical discs stacked closely together with precise spacing. These discs create numerous parallel separation channels that dramatically increase the effective settling area, enabling efficient separation of phases with different densities (such as oil-water separation, clarification of liquids, or concentration of solids) under high centrifugal force.
Working Principle
When the separation bowl rotates at high speed, the mixture enters the disc stack through distribution holes. The centrifugal force drives heavier phases (solids or denser liquids) outward toward the bowl wall, while lighter phases move inward. The closely spaced discs provide short settling distances and large surface area, allowing rapid separation as the liquid flows between the discs. Separated phases are discharged through different outlets.
Common Materials
Stainless steel (304/316L), Titanium alloy, High-strength aluminum alloy
Technical Parameters
  • Disc diameter, typically ranging from 100mm to 1000mm depending on bowl size and application (mm) Standard Spec
Components / BOM
  • Conical Disc Part
    Primary separation surface with distribution holes for liquid entry
    Material: stainless steel
  • Spacer Ring Part
    Maintains precise spacing between adjacent discs
    Material: stainless steel
  • Top Disc Part
    Special disc at the top of the stack with different hole pattern for phase distribution
    Material: stainless steel
  • Bottom Disc Part
    Special disc at the bottom of the stack that interfaces with the bowl distributor
    Material: stainless steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Disc Stack.

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
g force: Up to 15,000 x g (centrifugal acceleration)
pressure: Up to 10 bar (operating pressure), 15 bar test pressure
flow rate: 0.5 to 100 m³/h (model dependent)
temperature: -20°C to 150°C (dependent on seal/gasket materials)
slurry concentration: Up to 25% solids by volume (varies with particle size and density)
Media Compatibility
✓ Oil-water separation in petrochemical processing ✓ Pharmaceutical cell culture clarification ✓ Food-grade edible oil purification
Unsuitable: Highly abrasive slurries with hard particles >200 μm (causes excessive disc wear)
Sizing Data Required
  • Feed flow rate (m³/h)
  • Particle size distribution or droplet size (μm)
  • Density difference between phases (kg/m³)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Disc misalignment/warping
Cause: Thermal stress from uneven heating/cooling cycles, improper installation torque, or material fatigue from cyclic loading
Seal degradation/leakage
Cause: Chemical attack from process fluids, excessive pressure differentials, or wear from particulate contamination in the fluid stream
Maintenance Indicators
  • Abnormal vibration or audible knocking during operation indicating disc contact or imbalance
  • Visible fluid leakage at disc stack housing or pressure drop anomalies across the unit
Engineering Tips
  • Implement strict thermal cycling protocols and use calibrated torque tools during installation to prevent stress-induced distortion
  • Install upstream filtration and maintain fluid chemistry within specified limits to protect seals and disc surfaces

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems ASTM A276/A276M Standard Specification for Stainless Steel Bars and Shapes CE Marking (EU Machinery Directive 2006/42/EC)
Manufacturing Precision
  • Bore Diameter: +/-0.01mm
  • Parallelism of Faces: 0.05mm
Quality Inspection
  • Dimensional Verification with CMM (Coordinate Measuring Machine)
  • Ultrasonic Testing for Internal Defects

Factories Producing Disc Stack

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 available for disc stacks in separation equipment?

Disc stacks are manufactured from corrosion-resistant materials including stainless steel (304/316L), titanium alloy for harsh environments, and high-strength aluminum alloy for weight-sensitive applications.

What are the main components in a disc stack assembly?

A complete disc stack assembly consists of four key components: Bottom Disc, multiple Conical Discs, Spacer Rings for proper spacing, and a Top Disc to complete the stack configuration.

How does a disc stack improve separation efficiency in centrifuges?

The conical disc design maximizes surface area within the separation bowl, creating shorter settling distances for particles, which dramatically increases separation efficiency and throughput in liquid-solid and liquid-liquid applications.

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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