INDUSTRY COMPONENT

Rotor Shaft

Precision rotor shaft for X-ray tube anode rotation in medical imaging systems

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Component Specifications

Definition
A high-precision rotating shaft component that forms the central structural element of an X-ray tube rotor assembly, designed to support and rotate the anode target at high speeds (typically 3,000-10,000 RPM) while maintaining vacuum integrity and thermal stability within the X-ray tube housing.
Working Principle
The rotor shaft converts electrical energy from the stator windings into rotational kinetic energy through electromagnetic induction, enabling continuous high-speed rotation of the anode target to distribute thermal load and prevent localized overheating during X-ray generation.
Materials
High-temperature alloy steel (typically AISI 4340 or similar) with molybdenum or tungsten alloy bearing surfaces, vacuum-compatible coatings, and thermal expansion matching to adjacent components
Technical Parameters
  • Length 50-120 mm
  • Diameter 8-15 mm
  • Surface Finish Ra < 0.2 μm
  • Rotational Speed 3,000-10,000 RPM
  • Runout Tolerance < 0.005 mm
  • Vacuum Compatibility < 10^-6 mbar
  • Operating Temperature Up to 400°C
Standards
ISO 13485, ISO 9001, IEC 60601-1, ASTM A29

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Rotor Shaft.

X-ray tube rotor shaft medical imaging components anode rotation shaft vacuum-compatible shaft high-speed rotating shaft X-ray equipment parts Rotor Shaft Rotor Shaft in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

X-Ray Tube Rotor Assembly

High-speed rotating anode assembly for medical X-ray generation.

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Cutting Rotor

Rotating blade assembly that cuts polymer strands into uniform pellets in pelletizing equipment.

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Mixing Rotor

A rotating component within a soil stabilization machine that physically mixes and blends soil with stabilizing agents.

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Engineering Analysis

Risks & Mitigation
  • Bearing failure due to thermal stress
  • Vacuum leakage through shaft seals
  • Fatigue cracking from high-cycle rotation
  • Magnetic interference with imaging quality
  • Thermal expansion mismatch causing binding
FMEA Triads
Trigger: Inadequate thermal expansion design
Failure: Shaft binding or seizure during operation
Mitigation: Implement thermal expansion analysis and use materials with matched coefficients of thermal expansion
Trigger: Bearing surface wear or contamination
Failure: Increased vibration and reduced rotational accuracy
Mitigation: Use hardened bearing surfaces, implement cleanroom assembly, and establish preventive maintenance schedules
Trigger: Material fatigue from high-cycle rotation
Failure: Shaft fracture or catastrophic failure
Mitigation: Apply fatigue analysis during design, implement non-destructive testing, and establish replacement intervals based on operational hours

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.002 mm diameter, ±0.005 mm runout, angular alignment < 0.01°
Test Method
Coordinate measuring machine (CMM) verification, dynamic balancing testing, vacuum leak testing, thermal cycling validation

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of the rotor shaft in an X-ray tube?

The rotor shaft provides the mechanical connection between the stator's electromagnetic field and the anode target, enabling high-speed rotation to distribute heat evenly across the anode surface during X-ray production.

Why are vacuum compatibility and thermal stability critical for rotor shafts?

X-ray tubes operate under high vacuum to prevent electrical arcing and maintain electron beam integrity. The rotor shaft must maintain dimensional stability and material properties under vacuum conditions while withstanding thermal cycling from room temperature to several hundred degrees Celsius.

What maintenance considerations apply to rotor shafts?

Regular inspection for bearing wear, runout measurement, and vacuum integrity testing are essential. Lubrication is typically not required as most systems use dry or self-lubricating bearings compatible with vacuum environments.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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