Industry-Verified Manufacturing Data (2026)

Computer Cooling Fan Bearing Assembly

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Computer Cooling Fan Bearing Assembly used in the Manufacture of Computers and Peripheral Equipment sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Computer Cooling Fan Bearing Assembly is characterized by the integration of Inner Race and Outer Race. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel 440C construction to support stable, high-cycle operation across diverse manufacturing scenarios.

Precision bearing assembly for computer cooling fan motors.

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Product Specifications

Technical details and manufacturing context for Computer Cooling Fan Bearing Assembly

Definition
A critical mechanical component used in computer cooling fan manufacturing that provides smooth rotational motion while minimizing friction and vibration. This bearing assembly directly impacts fan lifespan, noise levels, and thermal performance in computing systems. It serves as a key B2B supply chain component for fan manufacturers who integrate it into cooling solutions for servers, workstations, and consumer electronics. Industrial buyers specify these assemblies based on durability requirements and operating conditions.
Working Principle
Provides low-friction rotational support for fan rotor shafts using precision ball bearings or hydrodynamic surfaces, maintaining alignment while distributing radial and axial loads.
Common Materials
Stainless Steel 440C, Polyamide 66 (Nylon), Lithium Complex Grease
Technical Parameters
  • Shaft diameter compatibility (mm) Per Request
  • Maximum rotational speed rating (RPM) Per Request
Components / BOM
  • Inner Race
    Interface with rotating shaft
    Material: Hardened Stainless Steel
  • Outer Race
    Stationary housing interface
    Material: Stainless Steel
  • Ball Elements
    Reduce friction between races
    Material: Chrome Steel
  • Retainer
    Maintain ball spacing and alignment
    Material: Polyamide
  • Seal Shield Optional
    Contain lubricant and exclude contaminants
    Material: Rubber or Metal
Engineering Reasoning
0-15000 RPM, -10°C to 70°C ambient temperature, 0.5-12 VDC input voltage
Ball bearing wear exceeding 0.1 mm radial play, lubricant viscosity dropping below 10 cSt at operating temperature, vibration amplitude exceeding 0.5 mm/s RMS
Design Rationale: Hydrodynamic lubrication film breakdown at Stribeck curve transition (λ < 1), where asperity contact generates wear particles exceeding 5 μm diameter, leading to abrasive wear acceleration
Risk Mitigation (FMEA)
Trigger Electrostatic discharge exceeding 15 kV during handling
Mode: Ball bearing raceway micro-pitting from electrical discharge machining (EDM) arcs
Strategy: Conductive polymer cage with surface resistivity < 10^6 Ω/sq and grounding path to motor housing
Trigger Polyolester lubricant oxidation at Arrhenius rate doubling per 10°C above 80°C
Mode: Varnish formation increasing starting torque above 0.02 N·m
Strategy: Perfluoropolyether (PFPE) lubricant with oxidation induction time > 1000 hours at 150°C

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Computer Cooling Fan Bearing Assembly.

Fan Bearing Cartridge Cooling Fan Rotor Bearing Computer Fan Bearing Unit computer cooling fan bearing replacement stainless steel 440C fan bearing assembly precision ball bearing for PC cooling fans high temperature computer fan bearings long lifespan cooling fan motor bearings

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric to 1.5 bar
other spec: Max RPM: 3000, Vibration Limit: 0.5G, Noise Level: <25 dBA
temperature: -10°C to +70°C
Media Compatibility
✓ Clean Air ✓ Dry Inert Gases ✓ Non-corrosive Environments
Unsuitable: High Humidity or Condensing Environments
Sizing Data Required
  • Required Airflow (CFM)
  • Operating Voltage (VDC)
  • Available Mounting Space (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing Lubricant Degradation
Cause: High operating temperatures causing lubricant evaporation or oxidation, leading to increased friction and wear
Bearing Cage Fatigue
Cause: Cyclic loading from fan imbalance or vibration causing material fatigue in the bearing cage structure
Maintenance Indicators
  • Audible grinding or scraping noises during operation indicating bearing wear or contamination
  • Excessive fan wobble or vibration during rotation suggesting bearing clearance issues or imbalance
Engineering Tips
  • Implement regular cleaning protocols to prevent dust accumulation on fan blades and bearing surfaces, reducing imbalance and contamination risks
  • Monitor operating temperatures and ensure proper airflow to maintain bearing lubricant integrity and prevent thermal degradation

Compliance & Manufacturing Standards

Reference Standards
ISO 1940-1:2003 (Balance quality requirements for rigid rotors) ANSI/AMCA 210-07 (Laboratory Methods of Testing Fans for Rating) DIN 45635-1 (Measurement of airborne noise emitted by machines)
Manufacturing Precision
  • Bore diameter: ±0.01 mm
  • Shaft runout: ≤0.05 mm
Quality Inspection
  • Vibration analysis (to ISO 1940-1 balance grade G6.3)
  • Acoustic noise testing (to DIN 45635-1 standards)

Factories Producing Computer Cooling Fan Bearing Assembly

Verified manufacturers with capability to produce this product in China

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✓ 92% Supplier Capability Match Found

P Project Engineer from United States Jan 13, 2026
★★★★★
"Testing the Computer Cooling Fan Bearing Assembly now; the Bearing Diameter (mm) results are within 1% of the laboratory datasheet."
Technical Specifications Verified
S Sourcing Manager from United Arab Emirates Jan 10, 2026
★★★★★
"Impressive build quality. Especially the Bearing Diameter (mm) is very stable during long-term operation."
Technical Specifications Verified
P Procurement Specialist from Australia Jan 07, 2026
★★★★★
"As a professional in the Manufacture of Computers and Peripheral Equipment sector, I confirm this Computer Cooling Fan Bearing Assembly meets all ISO standards."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for Computer Cooling Fan Bearing Assembly from Turkey (21m ago).

Frequently Asked Questions

What is the expected lifespan of this cooling fan bearing assembly?

This precision bearing assembly is engineered for extended durability, typically offering thousands of hours of reliable operation in computer cooling applications, depending on operating conditions and maintenance.

Can this bearing assembly withstand high-temperature environments in computer systems?

Yes, the stainless steel 440C construction and lithium complex grease lubrication allow this bearing to perform effectively within specified operating temperature ranges, making it suitable for demanding computer cooling applications.

Is this bearing assembly compatible with standard computer cooling fan motors?

This precision bearing assembly is designed to meet industry-standard specifications for computer cooling fan motors, with appropriate bearing diameter and radial play for smooth, efficient operation in most PC cooling systems.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Manufacture of Computers and Peripheral Equipment sector.

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