INDUSTRY COMPONENT

Main Shaft

Main shaft is the central rotating component in agitator/stirrer assemblies that transmits torque from the drive system to the mixing elements.

Component Specifications

Definition
The main shaft is a precision-engineered rotating shaft that serves as the primary structural and power transmission element in agitator and stirrer assemblies. It connects the drive mechanism (motor/gearbox) to the impeller or mixing blades, converting rotational energy into fluid agitation. Designed to withstand torsional, bending, and axial loads while maintaining alignment and minimizing deflection under operational stresses.
Working Principle
The main shaft operates on rotational mechanics principles, transmitting torque from the drive source to the mixing elements. It rotates at controlled speeds to create fluid movement through shear forces and momentum transfer. The shaft's rigidity and balance ensure smooth rotation while minimizing vibration and energy losses.
Materials
Stainless steel (AISI 304/316/316L), carbon steel (AISI 1045/4140), alloy steel, or specialized corrosion-resistant alloys. Surface treatments include polishing, hardening, or coating (e.g., electropolishing, nitride coating) for wear and corrosion resistance.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Length500-3000 mm
Diameter25-200 mm
HardnessHRC 30-45
Speed Range50-1500 RPM
Surface FinishRa 0.4-1.6 μm
Torque Capacity100-5000 Nm
Straightness Tolerance0.1 mm/m

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, ISO 286-2, DIN 748, DIN 42955

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Shaft fatigue failure
  • Bearing wear due to misalignment
  • Corrosion in aggressive environments
  • Vibration-induced damage
  • Seal leakage around shaft
FMEA Triads
Trigger: Improper material selection for corrosive environments
Failure: Shaft corrosion and pitting leading to structural weakness
Mitigation: Use corrosion-resistant alloys (316L stainless steel) with appropriate surface treatments and regular inspection protocols
Trigger: Dynamic imbalance during high-speed operation
Failure: Excessive vibration causing bearing failure and reduced equipment life
Mitigation: Implement precision dynamic balancing (ISO 1940-1 G2.5 standard) and regular vibration monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.05 mm diameter tolerance, straightness within 0.1 mm/m, surface finish Ra ≤ 1.6 μm
Test Method
Non-destructive testing (magnetic particle/ultrasonic), dynamic balancing per ISO 1940-1, dimensional verification with CMM, material certification per ASTM/EN standards

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 Main Shaft

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jiangsu Huixuan New Energy Equipment Co., Ltd.
Zhangjiagang, Jiangsu, CN
ISO BV SGS IST +2
Listed on the company's own website · profile compiled by CNFX from public sources

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

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Frequently Asked Questions

What are the critical design considerations for a main shaft in agitator applications?

Critical considerations include torsional strength to handle torque loads, bending stiffness to minimize deflection, corrosion resistance for process fluids, dynamic balancing to reduce vibration, and proper sealing integration to prevent leakage.

How does shaft material selection affect performance in different industrial applications?

Stainless steel (316L) offers excellent corrosion resistance for chemical and food processing, while alloy steels provide higher strength for high-torque applications. Material choice impacts fatigue life, maintenance frequency, and compatibility with process fluids.

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.

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