Agitation Shaft: Torque Capacity 50-5000 Nm, Diameter 25-300 mm

Component Specifications

Definition

The agitation shaft is a critical rotating component in agitation systems that connects the drive mechanism to impellers or mixing elements. It transfers mechanical energy from the motor to create fluid motion, ensuring proper mixing, blending, or suspension of materials in tanks or vessels. Designed to withstand torsional, bending, and axial loads while maintaining precise alignment and minimal deflection.

Working Principle

The agitation shaft rotates at controlled speeds, transmitting torque from the drive unit to attached impellers. This rotation creates fluid movement through shear forces and momentum transfer, achieving homogeneous mixing by disrupting laminar flow patterns and promoting turbulence or controlled circulation within the vessel.

Materials

Typically manufactured from stainless steel (AISI 304, 316, 316L), carbon steel, or alloy steels. Special applications may use titanium, Hastelloy, or coated materials for corrosion resistance. Surface finishes range from machined to polished (Ra ≤ 0.8 μm for sanitary applications).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	500-5000 mm
Diameter	25-300 mm
Speed Range	10-1500 RPM
Torque Capacity	50-5000 Nm
Runout Tolerance	≤0.1 mm/m
Surface Hardness	HRC 30-45

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, ISO 2852

Parent Products

This component is used in the following industrial products

Agitation System

A mechanical subsystem within an automated fermentation control system designed to mix and homogenize fermentation media through controlled agitation.

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Agitation Mechanism

A mechanical system designed to mix and homogenize yogurt culture and milk within a fermentation tank.

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Engineering Analysis

Risks & Mitigation

Shaft deflection causing impeller contact
Fatigue failure from cyclic loading
Corrosion in chemical environments
Critical speed resonance

FMEA Triads

Trigger: Improper material selection for corrosive media
Failure: Shaft corrosion and structural weakening
Mitigation: Use corrosion-resistant alloys (316L stainless steel, Hastelloy) with appropriate coatings

Trigger: Inadequate dynamic balancing
Failure: Excessive vibration leading to bearing failure
Mitigation: Implement precision balancing to ISO 1940 G2.5 standard and regular vibration monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.05 mm diameter tolerance, ±0.1° angular alignment

Test Method

Dynamic balancing testing (ISO 1940), NDT inspection (UT/MPI), dimensional verification per engineering drawings

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 Agitation Shaft

Manufacturer profiles associated with Agitation Shaft.

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Frequently Asked Questions

What factors determine agitation shaft diameter selection?

Shaft diameter is determined by torque requirements, critical speed calculations, deflection limits, and material strength to prevent vibration and failure under operational loads.

How is shaft alignment maintained in agitation systems?

Through precision machining, proper bearing support, coupling alignment, and dynamic balancing to ISO 1940 standards, minimizing runout and vibration.

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.

Agitation Shaft