Impeller(s): Diameter 100-2000 mm, Power Requirement 0.5-100 kW

Component Specifications

Definition

An impeller is a rotor with curved blades designed to accelerate fluid radially outward from the center of rotation. In agitation assemblies, it converts rotational mechanical energy into kinetic energy and pressure in the fluid, creating flow patterns essential for homogenization, suspension, heat transfer, and chemical reactions. Impellers are characterized by their blade geometry, diameter, rotational speed, and flow direction (axial, radial, or mixed).

Working Principle

Impellers operate on the principle of centrifugal force and fluid dynamics. As the impeller rotates, its blades impart momentum to the surrounding fluid, creating a pressure differential that induces flow. In agitation systems, this generates turbulence, shear forces, and circulation patterns (such as axial flow for top-to-bottom mixing or radial flow for high-shear applications) to achieve desired mixing objectives like dispersion, emulsification, or solid suspension.

Materials

Stainless steel (AISI 304, 316, 316L), carbon steel, duplex stainless steel, Hastelloy, titanium, polypropylene, PTFE, or ceramic-coated metals, selected based on corrosion resistance, mechanical strength, and compatibility with process fluids.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Diameter	100-2000 mm
Flow Type	Axial, Radial, Mixed
Blade Count	3-6 blades
Rotation Speed	50-1500 RPM
Pressure Rating	Up to 10 bar
Power Requirement	0.5-100 kW
Operating Temperature	-20°C to 200°C

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 2858, DIN 24256, ASME B73.1

Parent Products

This component is used in the following industrial products

Agitation Assembly

Mechanical assembly for controlled mixing and agitation in a chemical crystallization unit to promote uniform crystal formation.

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Engineering Analysis

Risks & Mitigation

Cavitation due to improper speed or design
Corrosion from aggressive chemicals
Imbalance causing vibration and wear
Fouling or clogging in viscous fluids

FMEA Triads

Trigger: Material fatigue or corrosion
Failure: Blade fracture or deformation
Mitigation: Use corrosion-resistant materials, regular inspection, and stress analysis during design.

Trigger: Improper installation or alignment
Failure: Excessive vibration and bearing damage
Mitigation: Follow manufacturer alignment procedures, use dynamic balancing, and monitor vibration levels.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance per ISO 2768-m, balance quality grade G6.3 per ISO 1940-1

Test Method

Performance testing per ISO 9104 for flow rate and power draw, material certification per ASTM A240

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

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Impeller(s)

Manufacturer profiles associated with Impeller(s).

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Frequently Asked Questions

What is the difference between axial and radial flow impellers?

Axial flow impellers (e.g., pitched blade turbines) move fluid parallel to the shaft, ideal for blending and suspension. Radial flow impellers (e.g., Rushton turbines) discharge fluid perpendicular to the shaft, generating high shear for dispersion and gas-liquid mixing.

How do I select the right impeller for my application?

Consider fluid viscosity, mixing objective (e.g., homogenization, solids suspension), tank geometry, and power availability. Low-viscosity fluids often use axial impellers, while high-viscosity or shear-sensitive applications may require specialized designs like helical ribbons or anchors.

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.

Impeller(s)