--- type: "product_component" title: "Computer Cooling Fan Bearing Assembly" industry: "Manufacture of Computers and Peripheral Equipment" verification_protocol: urn: "URN:CNFX:ME:COMPUTER_COOLING_FAN_BEARING_ASSEMBLY" data_integrity_hash: "3846ebf987ef76ce29f5dd4727004181" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:COMPUTER_COOLING_FAN_BEARING_ASSEMBLY" data_source_uri: "https://cnfx.com/llms/industry/manufacture-computers-peripherals/product/computer-cooling-fan-bearing-assembly.md" official_resource_url: "https://cnfx.com/industry/manufacture-computers-peripherals/product/computer-cooling-fan-bearing-assembly" is_verified_logic: true attributes: bearing_diameter: status: "verified" value: "3–8" unit: "mm" axial_load_capacity: status: "verified" value: "10–50" unit: "N" radial_play: status: "verified" value: "2–20" unit: "μm" operating_temperature_range: status: "verified" value: "-20–70" unit: "°C" lubrication_type: status: "verified" value: "Grease" unit: "text" expected_lifespan: status: "verified" value: "30000–50000" unit: "hours" noise_level: status: "verified" value: "20–30" unit: "dB(A)" vibration_grade: status: "verified" value: "V1–V2" unit: "" material_grade: status: "verified" value: "G10" unit: "" weight: status: "verified" value: "1–5" unit: "g" engineering_limits: max_safe_operating_point: value: 0.1 unit: "mm" consequence: "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" fmea_matrix_quantitative: - node_1: trigger: "Electrostatic discharge exceeding 15 kV during handling" mitigation_protocol: "Conductive polymer cage with surface resistivity < 10^6 Ω/sq and grounding path to motor housing" - node_2: trigger: "Polyolester lubricant oxidation at Arrhenius rate doubling per 10°C above 80°C" mitigation_protocol: "Perfluoropolyether (PFPE) lubricant with oxidation induction time > 1000 hours at 150°C" bom_nodes: inner-race: type: "component" llms_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/component/inner-race.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:INNER_RACE" urn: "URN:CNFX:ME:UNIT:INNER_RACE" interface_type: "physical-logic-coupled" is_migrated_part: true outer-race: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/outer-race.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:OUTER_RACE" urn: "URN:CNFX:ME:UNIT:OUTER_RACE" interface_type: "physical-logic-coupled" is_migrated_part: true ball-elements: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/ball-elements.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:BALL_ELEMENTS" urn: "URN:CNFX:ME:UNIT:BALL_ELEMENTS" interface_type: "physical-logic-coupled" is_migrated_part: true retainer: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/retainer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:RETAINER" urn: "URN:CNFX:ME:UNIT:RETAINER" interface_type: "physical-logic-coupled" is_migrated_part: true seal-shield: type: "component" llms_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/component/seal-shield.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:SEAL_SHIELD" urn: "URN:CNFX:ME:UNIT:SEAL_SHIELD" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: - standard: "ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR RIGID ROTORS)" scope: "Verified Engineering Specification" url: "https://cnfx.com/llms/industry/manufacture-computers-peripherals/product/computer-cooling-fan-bearing-assembly.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "26c9c2c57bd9ebd768ca3e9609a561524d41a5960e7e2e4fd4edc5d7c6e85bed" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Computer Cooling Fan Bearing Assembly" - "computer cooling fan bearing" - "bearing assembly" - "precision bearing" - "fan motor bearing" - "B2B component" - "Computer Cooling Fan Bearing Assembly in Manufacture Computers Peripherals" - "China Computer Cooling Fan Bearing Assembly manufacturer" - "Computer Cooling Fan Bearing Assembly supplier China" - "Computer Cooling Fan Bearing Assembly bearing_diameter" - "Computer Cooling Fan Bearing Assembly axial_load_capacity" - "Computer Cooling Fan Bearing Assembly radial_play" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: Computer Cooling Fan Bearing Assembly ## 1. Technical Definition This bearing assembly is a precision mechanical component used in the manufacture of computer cooling fans. ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **0-15000 RPM, -10°C to 70°C ambient temperature, 0.5-12 VDC input voltage**. Failure boundary: **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**, Mechanism: **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**. ### 2.1 Analytical Physics Model Governed by the **L10 Bearing Life & Fatigue Model**: > **Primary Equation**: $L_{10} = (\frac{C}{P})^p$ > **Engineering Impact**: Predicts mechanical lifecycle before component fatigue. | Symbol | Variable Definition | Localized Reference | | :--- | :--- | :--- | | C | Dynamic Load Rating | Engineering Constant | | P | Equivalent Dynamic Load | Engineering Constant | ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Electrostatic discharge exceeding 15 kV during handling | Not specified | Ball bearing raceway micro-pitting from electrical discharge machining (EDM) arcs | Conductive polymer cage with surface resistivity < 10^6 Ω/sq and grounding path to motor housing | | Polyolester lubricant oxidation at Arrhenius rate doubling per 10°C above 80°C | Not specified | Varnish formation increasing starting torque above 0.02 N·m | Perfluoropolyether (PFPE) lubricant with oxidation induction time > 1000 hours at 150°C | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | Bearing Diameter | 3–8 | mm | Verified | | Axial Load Capacity | 10–50 | N | Verified | | Radial Play | 2–20 | μm | Verified | | Operating Temperature Range | -20–70 | °C | Verified | | Lubrication Type | Grease | text | Verified | | Expected Lifespan | 30000–50000 | hours | Verified | | Noise Level | 20–30 | dB(A) | Verified | | Vibration Grade | V1–V2 | | Verified | | Material Grade | G10 | | Verified | | Weight | 1–5 | g | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Precision CNC Lathe**, **Automated Assembly Station**, **Laser Marking Machine** **Downstream Applications**: Computer CPU Cooling Fan, GPU Cooling Fan, Server Rack Cooling Fan ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What materials are used in this bearing assembly? **A**: The assembly may use stainless steel 440C for bearing components, polyamide 66 (nylon) for cages or housings, and lithium complex grease for lubrication. Material grades and specific compositions should be confirmed with the manufacturer. ### Q: What is the expected lifespan of this bearing assembly? **A**: The expected lifespan is 30,000 to 50,000 hours under rated conditions, based on ISO 281. Actual lifespan depends on operating conditions, load, speed, and maintenance. Verify with the supplier for your specific application. ### Q: How does the bearing assembly affect fan noise? **A**: The bearing assembly is designed to minimize vibration and noise. The noise level is specified as 20-30 dB(A) measured at 1 meter, per ISO 3744. Proper installation and lubrication are critical to achieving these levels. ### Q: What standards apply to this bearing assembly? **A**: Relevant standards include ISO 15 for bearing dimensions, ISO 76 for load ratings, ISO 5753 for radial play, ISO 281 for lifespan, ISO 3744 for noise, ISO 15242 for vibration, and ISO 683-17 for material grade. These are references for verification, not certifications. ## 6. Manufacturing Compliance - ISO 1940-1:2003 (BALANCE QUALITY REQUIREMENTS FOR RIGID ROTORS) --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: Computer Cooling Fan Bearing Assembly](https://cnfx.com/industry/manufacture-computers-peripherals/product/computer-cooling-fan-bearing-assembly)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **5** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: COMPUTER_COOLING_FAN_BEARING_ASSEMBLY | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: b40b3c7e