{"product_id":"weiguang-ywf4d-300s-external-rotor-axial-fan","title":"WEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan","description":"\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#0056B3; font-size:14px; line-height:22px; letter-spacing:1px; text-transform:uppercase; margin:0 0 24px 0;\"\u003eWeiguang · Cooling Fans · industrial · In stock\u003c\/p\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eWhat Is the WEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan?\u003c\/h2\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:16px; line-height:26px; margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eWEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan\u003c\/strong\u003e is a industrial cooling fan engineered for high-temperature environments where standard fans would experience shortened bearing life. With its Verify from product label rating and robust construction, it maintains reliable airflow even when ambient temperatures rise above typical office\/IT thresholds. This makes it a preferred choice for foundry automation, industrial oven control panels, and outdoor telemetry enclosures. It is manufactured by \u003ca href=\"https:\/\/koeed.com\/collections\" style=\"color:#0056B3; text-decoration:underline;\"\u003e\u003cstrong\u003eWeiguang\u003c\/strong\u003e\u003c\/a\u003e and distributed worldwide through KOEED.\u003c\/p\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:16px; line-height:26px; margin:0 0 16px 0;\"\u003e\u003cstrong\u003eIn short:\u003c\/strong\u003e The WEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan is a Verify from product label industrial industrial cooling fan that delivers reliable forced-air thermal management for electronic enclosures, automation cabinets, and power conversion equipment — engineered for continuous-duty operation with long service life.\u003c\/p\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eKey Features and What They Mean for Your Equipment\u003c\/h2\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:18px; line-height:26px; margin:24px 0 8px 0;\"\u003e1. Sealed Bearing Option\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003e\u003cstrong\u003eWhat it means:\u003c\/strong\u003e The ball bearings incorporate contact rubber seals that retain the grease charge and exclude particulate contamination.\u003cbr\u003e\u003cstrong\u003eWhy it matters:\u003c\/strong\u003e In dusty industrial environments — cement plants, woodworking, textile mills — airborne particles can accelerate bearing wear dramatically.\u003cbr\u003e\u003cstrong\u003eResult:\u003c\/strong\u003e Service life in dirty environments approaches that of clean-room operation, reducing replacement frequency.\u003c\/p\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:18px; line-height:26px; margin:24px 0 8px 0;\"\u003e2. Wide Voltage Tolerance\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003e\u003cstrong\u003eWhat it means:\u003c\/strong\u003e The motor driver accepts a voltage range around the nominal Verify from product label rating, accommodating power supply variation.\u003cbr\u003e\u003cstrong\u003eWhy it matters:\u003c\/strong\u003e Industrial DC bus voltages can sag under load or spike during regeneration; a tolerant fan keeps spinning through these transients.\u003cbr\u003e\u003cstrong\u003eResult:\u003c\/strong\u003e No additional voltage regulation circuitry needed on the fan supply rail, simplifying system design and reducing BOM cost.\u003c\/p\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:18px; line-height:26px; margin:24px 0 8px 0;\"\u003e3. Reverse Polarity Protection\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003e\u003cstrong\u003eWhat it means:\u003c\/strong\u003e An internal diode or MOSFET-based protection circuit prevents damage if the DC power leads are accidentally reversed during installation.\u003cbr\u003e\u003cstrong\u003eWhy it matters:\u003c\/strong\u003e Wiring errors happen, especially during field service and retrofit jobs; protected fans survive a reversed connection without drama.\u003cbr\u003e\u003cstrong\u003eResult:\u003c\/strong\u003e One less failure mode during commissioning and maintenance — reduces spares consumption and troubleshooting time.\u003c\/p\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#555555; font-size:14px; line-height:20px; margin:0 0 8px 0;\"\u003e\u003cem\u003eNote: Always verify specifications from the product label or manufacturer datasheet before placing an order.\u003c\/em\u003e\u003c\/p\u003e\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #eeeeee; font-family:Arial, Helvetica, sans-serif; font-size:14px; margin:16px 0;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eWeiguang\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eModel\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eWEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eFrame Size\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eVerify from product label\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eVoltage\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eVerify from product label\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eCurrent\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eVerify from product label\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eBearing Type\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eVerify from product label\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eWire Count\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eVerify from product label\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLaser Marking \/ Engraving Systems:\u003c\/strong\u003e Cooling the laser tube, galvanometer drivers, and power supply modules inside laser marking workstations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMedical Diagnostic Equipment:\u003c\/strong\u003e Quiet forced-air cooling for ultrasound machines, hematology analyzers, and clinical chemistry automation modules in hospital labs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Display and Digital Signage:\u003c\/strong\u003e Ventilation for high-brightness LED video walls, outdoor billboard controllers, and digital menu-board enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3D Printer Electronics Bay:\u003c\/strong\u003e Cooling stepper motor drivers, heated-bed MOSFETs, and control board processors inside enclosed additive manufacturing machines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRenewable Energy Inverters:\u003c\/strong\u003e Thermal management for solar string inverters, wind turbine pitch control cabinets, and battery energy storage system (BESS) power electronics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTest \u0026amp; Measurement Instrumentation:\u003c\/strong\u003e Forced-air cooling for oscilloscopes, spectrum analyzers, signal generators, and automated test equipment (ATE) rack stacks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:17px; line-height:26px; margin:24px 0 8px 0;\"\u003e\"Is this fan suitable for outdoor use, or is it indoor only?\"\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003eThe WEIGUANG YWF4D-300S High-Speed External Rotor Axial Fan is not IP-rated for direct exposure to rain or water spray — it is designed for use inside equipment enclosures. If the enclosure itself is outdoor-rated (NEMA 4 \/ IP65 or better), the fan will operate reliably inside it. For direct outdoor exposure, you would need an IP55-or-better rated fan with sealed bearings and conformally coated electronics — KOEED can source these on request.\u003c\/p\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:17px; line-height:26px; margin:24px 0 8px 0;\"\u003e\"How do I clean this fan when dust builds up?\"\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003eDisconnect power first. Use compressed air (canned or from a regulated compressor at low pressure) to blow dust off the blades and through the bearing area. Hold the impeller still while blowing — do not let it spin freely under the air stream, as overspeeding can damage the bearings. For heavy contamination, a soft brush and isopropyl alcohol on the frame (not the motor internals) can be used. Never use water or solvent sprays directly on the motor hub.\u003c\/p\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:17px; line-height:26px; margin:24px 0 8px 0;\"\u003e\"What is the expected service life \/ MTBF of this fan?\"\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003eBall-bearing fans in this class typically achieve 50,000 to 70,000 hours MTBF at their rated temperature (often specified at 40°C or 60°C ambient). Actual life depends heavily on operating temperature, dust load, and voltage stability. Every 10°C reduction in operating temperature can roughly double bearing life. For the most accurate MTBF figure for your specific operating conditions, consult the manufacturer datasheet or contact us for a copy.\u003c\/p\u003e\n\u003ch3 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:17px; line-height:26px; margin:24px 0 8px 0;\"\u003e\"Can I use a PWM controller to adjust the speed of this fan?\"\u003c\/h3\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 16px 0;\"\u003eIf this is a 4-wire (PWM) variant, yes — the fourth wire accepts a standard 25 kHz PWM signal (5V logic level) to control speed. If it is a 2-wire or 3-wire variant, speed control must be done by varying the DC supply voltage, which is less common in fixed-speed applications. Verify the wire count from the listing photos, and if you need a PWM-controllable model that is not currently in stock, email \u003ca href=\"mailto:Moritta@KOEED.COM\" style=\"color:#16c8c8; text-decoration:underline;\"\u003eMoritta@KOEED.COM\u003c\/a\u003e with your specification.\u003c\/p\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003eWhy Source Cooling Fans Through KOEED?\u003c\/h2\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 12px 0;\"\u003eCooling fans are consumable components — they wear out, and when they do, your equipment is at risk of thermal shutdown. KOEED maintains stock of \u003ca href=\"https:\/\/koeed.com\/collections\" style=\"color:#0056B3; text-decoration:underline;\"\u003eindustrial cooling fans\u003c\/a\u003e across multiple brands, frame sizes, and voltage ratings. If the exact model you need is not listed on our site, we can source it from our global supplier network. We support single-unit replacements and bulk BOM orders alike.\u003c\/p\u003e\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-brand inventory:\u003c\/strong\u003e SANYO Denki, Nidec, NMB, Delta, Sunon, and more — one purchase order covers all your fan requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHard-to-find models:\u003c\/strong\u003e Discontinued series, odd frame sizes, special voltage variants — we locate what others cannot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBOM consolidated quoting:\u003c\/strong\u003e Send your complete fan list and receive a single quotation with availability and lead time for every line item.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"background-color:#16c8c8; padding:24px 32px; margin:32px 0; text-align:center; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003ch3 style=\"margin:0 0 12px 0; color:#ffffff; font-size:20px; line-height:28px;\"\u003eNeed this part or a full BOM?\u003c\/h3\u003e\n  \u003cp style=\"margin:0 0 16px 0; color:#ffffff; font-size:15px; line-height:22px;\"\u003eSend your part list to \u003cstrong\u003eMoritta@KOEED.COM\u003c\/strong\u003e and get availability + price within 24 hours.\u003c\/p\u003e\n  \u003ca href=\"mailto:Moritta@KOEED.COM?subject=RFQ%20%E2%80%94%20WEIGUANG%20YWF4D-300S%20High-Speed%20External%20Rotor%20Axial%20Fan\" style=\"display:inline-block; background-color:#ffffff; color:#0056B3; padding:12px 24px; text-decoration:none; font-weight:bold; border-radius:4px; font-size:15px;\"\u003eRequest a Quote →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #0056B3; padding:16px 24px; margin:16px 0; text-align:left; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 8px 0; color:#111111; font-size:15px; line-height:22px;\"\u003eLooking for a different frame size or voltage? Browse our full range of industrial cooling fans.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/koeed.com\/collections\" style=\"display:inline-block; color:#0056B3; padding:6px 18px; text-decoration:none; font-weight:bold; border:1px solid #0056B3; border-radius:4px; font-size:14px;\"\u003eBrowse All Cooling Fans →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #eeeeee; background-color:#f4fcfc; padding:16px 24px; margin:16px 0; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 4px 0; color:#111111; font-size:15px; font-weight:bold;\"\u003e\u0026gt; Need to look up PLC error codes or convert hex values?\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 8px 0; color:#333333; font-size:14px;\"\u003eTry the KOEED free online PLC toolset — calculators, converters, and diagnostic tools for engineers.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/koeed.com\/pages\/plc-hex-to-float-converter\" style=\"color:#0056B3; text-decoration:underline; font-weight:bold; font-size:14px;\"\u003eOpen PLC Tools\u003c\/a\u003e  ·  \u003ca href=\"https:\/\/koeed.com\/pages\/plc-error-code-lookup\" style=\"color:#0056B3; text-decoration:underline; font-weight:bold; font-size:14px;\"\u003ePLC Error Code Database\u003c\/a\u003e  ·  \u003ca href=\"https:\/\/koeed.com\/pages\/ai-tool\" style=\"color:#0056B3; text-decoration:underline; font-weight:bold; font-size:14px;\"\u003eAI Diagnostic Tool\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#555555; font-size:13px; line-height:20px; margin:24px 0 8px 0;\"\u003e\u003cem\u003ekoeed.com — Your Trusted PLC Supplier. Industrial electronics, automation components, and specialty parts from 10 major brands including Allen-Bradley, Siemens, Mitsubishi, Omron, Fanuc, Schneider, Yaskawa, Panasonic, KEYENCE, and KLUBER. Worldwide shipping with 24-hour quote turnaround at Moritta@KOEED.COM.\u003c\/em\u003e\u003c\/p\u003e","brand":"WEIGUANG","offers":[{"title":"Default Title","offer_id":44241858855097,"sku":"166333195374","price":212.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/WEIGUANG_YWF4D_300S_High_Speed_External_Rotor_Axial_Fan___WEIGUANG__1.webp?v=1783330676","url":"https:\/\/koeed.com\/tr\/products\/weiguang-ywf4d-300s-external-rotor-axial-fan","provider":"KOEED","version":"1.0","type":"link"}