Conical Disc: RPM Range 5,000-15,000, Diameter 150-800 mm

Component Specifications

Definition

A conical disc is a critical component within disc stack centrifuges and separators, characterized by its conical shape with precisely angled surfaces. These discs are stacked in series within the centrifuge bowl, creating multiple separation channels that dramatically increase the effective settling area. The conical geometry creates a thin-film separation zone where heavier phases migrate outward while lighter phases move inward, enabling continuous separation of liquids with different densities or removal of solid particles from liquid streams.

Working Principle

The conical disc operates on centrifugal sedimentation principles. When the disc stack rotates at high speeds (typically 5,000-15,000 RPM), the conical shape creates inclined settling surfaces. The feed enters through the center and distributes between discs. Under centrifugal force, denser phases (solids or heavier liquids) migrate outward along the disc surfaces toward the bowl periphery, while lighter phases flow inward toward the center outlet. The conical angle (typically 35-45°) optimizes particle settling distance and separation efficiency.

Materials

Stainless steel (AISI 316L, 1.4404), duplex stainless steel (1.4462), titanium (Grade 2, 3.7035), or specialized alloys for corrosive applications. Surface finish: Ra ≤ 0.8 μm. Hardness: 150-250 HB. Corrosion resistance per ASTM A240.

Technical Parameters

Parameter	Typical range	Notes & selection driver
G Force	5,000-15,000 × g
Diameter	150-800 mm
RPM Range	5,000-15,000
Thickness	0.8-2.0 mm
Cone Angle	35-45°
Pressure Rating	Up to 10 bar
Operating Temperature	-20°C to +150°C
Surface Area Per Disc	0.1-0.8 m²

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 1940-1, DIN 11850, ASME BPE, 3-A Sanitary Standards

Parent Products

This component is used in the following industrial products

Disc Stack

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

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Engineering Analysis

Risks & Mitigation

Disc deformation under high G-forces
Corrosion in aggressive media
Fouling and clogging
Imbalance causing vibration
Fatigue failure from cyclic loading

FMEA Triads

Trigger: Material fatigue from cyclic stress
Failure: Crack propagation leading to disc rupture
Mitigation: Regular NDT inspection, stress relief annealing, proper material selection for fatigue resistance

Trigger: Corrosive media attack
Failure: Thinning and perforation of disc material
Mitigation: Corrosion-resistant alloys, protective coatings, regular thickness measurement

Trigger: Solid particle accumulation
Failure: Reduced separation efficiency and increased pressure drop
Mitigation: Regular cleaning cycles, pre-filtration of feed, optimized disc spacing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm diameter, ±0.5° cone angle, surface flatness within 0.1 mm/m

Test Method

Dimensional verification per ISO 2768-m, material certification per EN 10204 3.1, balance testing per ISO 1940-1 G2.5, pressure testing per ASME BPVC

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

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Supplier transparency

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Manufacturers of Conical Disc

Manufacturer profiles associated with Conical Disc.

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Frequently Asked Questions

What is the purpose of the conical shape in disc stack centrifuges?

The conical shape creates inclined settling surfaces that reduce particle settling distance by up to 90% compared to cylindrical designs. This dramatically increases separation efficiency while maintaining compact equipment dimensions.

How do conical discs handle different liquid densities?

Conical discs create thin-film separation zones where centrifugal force causes denser liquids to migrate outward along disc surfaces while lighter liquids flow inward. The precise cone angle optimizes this density-based separation.

What maintenance is required for conical discs?

Regular inspection for wear, corrosion, and deformation; cleaning to prevent fouling; and periodic replacement based on operating hours or performance degradation. Proper handling is essential to prevent surface damage.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Conical Disc