Blades/Paddles: Rotation Speed Range 10-500 RPM

Component Specifications

Definition

Blades or paddles are the primary working elements of paddle wheels, designed to displace, mix, or propel fluids (liquids or gases) by converting rotational motion into fluid motion. These components feature specific hydrodynamic profiles optimized for efficiency, wear resistance, and minimal cavitation. They are critical in applications requiring controlled fluid movement, agitation, or energy transfer in industrial machinery.

Working Principle

Blades/paddles operate on hydrodynamic principles: as the paddle wheel rotates, the angled surfaces of the blades push against the fluid, creating displacement and momentum transfer. The design ensures optimal fluid contact, minimizing drag while maximizing thrust or mixing efficiency. Energy conversion occurs from mechanical rotation to fluid kinetic energy, governed by blade geometry, rotational speed, and fluid properties.

Materials

Common materials include stainless steel (e.g., AISI 304/316 for corrosion resistance), carbon steel (for strength), aluminum alloys (for lightweight applications), engineered plastics (e.g., polypropylene, PTFE for chemical resistance), and composite materials. Coatings like ceramic or polymer layers may be applied for abrasion resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	3-20 mm
Blade Width	50-200 mm
Blade Length	100-500 mm
Mounting Type	Bolted, welded, or keyed
Fluid Compatibility	Water, chemicals, slurries, gases
Rotation Speed Range	10-500 RPM

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 5199, DIN 28100

Parent Products

This component is used in the following industrial products

Paddle Wheel

A rotating component with blades or paddles used to move, mix, or convey powdered materials within a feeding system.

View Product Details

Engineering Analysis

Risks & Mitigation

Blade fatigue failure
Corrosion damage
Cavitation erosion
Imbalance causing vibration
Material incompatibility with fluids

FMEA Triads

Trigger: High cyclic loading and stress concentration
Failure: Crack propagation and blade fracture
Mitigation: Use fatigue-resistant materials, regular inspection, and stress-relief designs

Trigger: Exposure to corrosive fluids
Failure: Material degradation and reduced structural integrity
Mitigation: Apply corrosion-resistant coatings or select compatible alloys

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5 mm on critical dimensions, surface finish Ra ≤ 3.2 μm

Test Method

Hydrodynamic performance testing per ISO 5199, material certification, and non-destructive testing (NDT)

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Blades/Paddles

Manufacturer profiles associated with Blades/Paddles.

Sourcing Blades/Paddles from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Related Components

Chrome Plating

Hard chrome plating is an electroplating process that deposits a layer of chromium onto metal surfaces to enhance wear resistance, corrosion protection, and reduce friction for hydraulic cylinder piston rods.

Upper Tool (Punch)

Upper Tool (Punch) is the active forming component in metal plate bending machines that applies precise downward force to create bends in sheet metal.

Main Frame

The main frame is the primary structural component of a hydraulic press, providing rigidity and stability to withstand high compressive forces during metal forming operations.

Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What are the main functions of blades/paddles in paddle wheels?

They primarily displace or mix fluids, transfer energy, and propel materials in applications like agitators, mixers, or water wheels.

How do I select the right material for blades/paddles?

Consider fluid corrosiveness, abrasion, temperature, and hygiene requirements. Stainless steel is common for corrosive environments, while plastics suit chemical resistance.

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.

Blades/Paddles