Industry-Verified Manufacturing Data (2026)

Disc Stack

Based on aggregated insights from multiple verified 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
    Primary separation surface with distribution holes for liquid entry
    Material: stainless steel
  • Spacer Ring
    Maintains precise spacing between adjacent discs
    Material: stainless steel
  • Top Disc
    Special disc at the top of the stack with different hole pattern for phase distribution
    Material: stainless steel
  • Bottom Disc
    Special disc at the bottom of the stack that interfaces with the bowl distributor
    Material: stainless steel
Engineering Reasoning
3000-15000 rpm, 0.1-10 μm particle separation threshold, 0.5-100 m³/h flow rate
Disc stack imbalance exceeding 0.05 mm radial displacement at 10000 rpm, disc surface temperature exceeding 120°C, bowl pressure exceeding 25 bar
Design Rationale: Centrifugal force-induced material fatigue (σ_max = ρω²r²) causing disc deformation, thermal expansion differential (ΔL = αLΔT) between disc materials leading to binding, cavitation at disc surface due to Bernoulli principle pressure drop
Risk Mitigation (FMEA)
Trigger Solid particle accumulation exceeding 5% bowl volume
Mode: Disc stack imbalance causing vibration exceeding 2.5 mm/s RMS
Strategy: Install capacitive proximity sensors with 0.1 mm resolution for real-time solids monitoring and automatic bowl discharge
Trigger Lubricant film breakdown at disc interface (film thickness < 1 μm)
Mode: Metal-to-metal contact causing adhesive wear and torque increase exceeding 150% nominal
Strategy: Implement hydrodynamic bearing design with minimum film thickness of 5 μm at 10000 rpm using ISO VG 32 oil

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 DNA

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

Verified manufacturers with capability to produce this product in China

✓ 94% Supplier Capability Match Found

S Sourcing Manager from United Arab Emirates Feb 13, 2026
★★★★★
"Impressive build quality. Especially the technical reliability is very stable during long-term operation."
Technical Specifications Verified
P Procurement Specialist from Australia Feb 10, 2026
★★★★☆
"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Disc Stack meets all ISO standards. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Singapore Feb 07, 2026
★★★★★
"Standard OEM quality for Machinery and Equipment Manufacturing applications. The Disc Stack 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.”

9 sourcing managers are analyzing this specification now. Last inquiry for Disc Stack from Vietnam (32m ago).

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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.

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