INDUSTRY COMPONENT

Bearings

High-precision bearings for X-ray tube rotor assemblies enabling smooth rotation and minimal vibration in medical imaging equipment.

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Component Specifications

Definition
Specialized bearings designed for X-ray tube rotor assemblies that support high-speed rotation of the anode while maintaining precise alignment, managing thermal expansion, and minimizing mechanical vibration to ensure consistent image quality in diagnostic imaging systems. These components operate in vacuum or controlled environments with specific lubrication requirements.
Working Principle
Bearings in X-ray tube rotor assemblies reduce friction between rotating and stationary parts through rolling elements (balls or rollers) that distribute loads evenly. They maintain precise concentricity while accommodating thermal expansion from high operating temperatures (up to 300°C), enabling the anode to rotate at 3,000-10,000 RPM with minimal wobble for consistent X-ray generation.
Materials
High-grade bearing steel (AISI 52100 or equivalent), ceramic hybrid options (silicon nitride balls with steel races), special coatings (chrome plating or DLC), high-temperature lubricants (perfluoropolyether or specialized greases), and corrosion-resistant cages (bronze or polymer composites).
Technical Parameters
  • Width 10-30 mm
  • Clearance C3/C4 for thermal expansion
  • Lubrication High-temperature grease or oil-mist systems
  • Speed Rating Up to 15,000 RPM
  • Bore Diameter 10-50 mm
  • Load Capacity Dynamic: 5-20 kN, Static: 3-15 kN
  • Outer Diameter 30-100 mm
  • Precision Grade ABEC 7 or higher (P4/P2)
  • Operating Temperature -40°C to 300°C
Standards
ISO 15242, ISO 492, DIN 625, DIN 5402

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Bearings.

X-ray tube bearings medical imaging bearings rotor assembly components high-speed precision bearings diagnostic equipment parts bearing failure analysis Bearings Bearings 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.

View Product Details

Refrigerator Evaporator Fan Motor

Electric motor driving airflow across refrigerator evaporator coils

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Drying Cylinder

A rotating cylindrical component designed to remove moisture from materials through heat transfer and evaporation.

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Engineering Analysis

Risks & Mitigation
  • Catastrophic bearing failure causing tube replacement
  • Increased vibration degrading image quality
  • Lubricant breakdown at high temperatures
  • Thermal expansion causing binding
  • Corrosion in humid environments
FMEA Triads
Trigger: Lubricant degradation at high operating temperatures
Failure: Increased friction leading to overheating and eventual seizure
Mitigation: Use high-temperature rated lubricants, implement temperature monitoring, and follow scheduled maintenance
Trigger: Contamination from tube arcing or debris
Failure: Pitting and premature wear of bearing surfaces
Mitigation: Maintain clean assembly environment, use sealed bearing designs, and implement filtration systems
Trigger: Improper installation causing misalignment
Failure: Uneven load distribution and reduced bearing life
Mitigation: Follow precise installation procedures, use alignment tools, and verify concentricity after assembly

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Radial runout < 0.005 mm, axial play < 0.01 mm, concentricity < 0.003 mm
Test Method
Vibration analysis (ISO 15242), thermal cycling tests, accelerated life testing with load simulation, lubricant performance 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 makes X-ray tube bearings different from standard industrial bearings?

X-ray tube bearings operate in vacuum or controlled environments, withstand higher temperatures (up to 300°C), require specialized high-temperature lubricants, and must maintain extreme precision (ABEC 7 or higher) to prevent image artifacts from mechanical vibration.

How often should X-ray tube bearings be replaced?

Typically 3-7 years depending on usage intensity, but monitoring through vibration analysis and thermal imaging can predict failure. Preventive replacement is recommended when wear indicators exceed manufacturer specifications.

Can ceramic bearings improve X-ray tube performance?

Yes, ceramic hybrid bearings (silicon nitride balls with steel races) reduce friction, handle higher temperatures better, and have longer service life, though at higher initial cost.

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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