{"product_id":"nidec-w40s12bs4a5-57-fan","title":"Nidec W40S12BS4A5-57 DC Axial Fan 12V 0.73A 40x40x28mm","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-line:#c9dce9;--surface:#fff;--surface-soft:#f7fbfe;--text-main:#173042;--shadow-soft:0 10px 30px rgba(8,47,73,.08);--shadow-hover:0 16px 36px rgba(8,79,124,.15);--radius-lg:14px;--radius-md:10px}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,.025) 1px,transparent 1px);background-size:auto,34px 34px,34px 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*::before,.nxs-industrial-product-page *::after{transition:none!important}}\u003c\/style\u003e\n\u003cdiv class=\"nxs-industrial-product-page\"\u003e\n\u003cdiv class=\"container\"\u003e\u003cmain\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eNidec UltraFlo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eW40S12BS4A5-57\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eDC Brushless Axial Cooling Fan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Series\u003c\/td\u003e\n\u003ctd\u003eUltraFlo W40S Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e12 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e7.0–13.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current\u003c\/td\u003e\n\u003ctd\u003e0.73 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Input Power\u003c\/td\u003e\n\u003ctd\u003e8.76 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Speed\u003c\/td\u003e\n\u003ctd\u003e18,500 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Airflow\u003c\/td\u003e\n\u003ctd\u003e0.75 m³\/min (26.5 CFM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Static Pressure\u003c\/td\u003e\n\u003ctd\u003e537 Pa (2.16 inH₂O)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Pressure Level\u003c\/td\u003e\n\u003ctd\u003e58.5 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Dimensions\u003c\/td\u003e\n\u003ctd\u003e40 x 40 x 28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e12 VDC Brushless Motor\u003c\/h3\u003e\n\u003cp\u003eThis DC brushless axial fan is designed for compatible 12 VDC cooling systems, with a listed rated current of 0.73 A.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eCompact 40 x 40 x 28 mm Frame\u003c\/h3\u003e\n\u003cp\u003eThe 40 mm square frame and 28 mm thickness provide a defined mounting size for compact equipment and server cooling assemblies.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e18,500 RPM Rated Speed\u003c\/h3\u003e\n\u003cp\u003eThe listed nominal speed is 18,500 RPM, supporting high-speed air movement in compatible equipment.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e26.5 CFM Maximum Airflow\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists maximum airflow of 0.75 m³\/min (26.5 CFM). Actual airflow depends on the resistance of the equipment airflow path.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eHigh Static Pressure\u003c\/h3\u003e\n\u003cp\u003eThe listed maximum static pressure is 537 Pa (2.16 inH₂O), providing a reference when selecting fans for restrictive ventilation paths.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003ePWM Speed Control\u003c\/h3\u003e\n\u003cp\u003eThe four-wire configuration includes a PWM control lead for compatible speed-management systems. Confirm the control signal requirements before installation.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eTachometer Feedback\u003c\/h3\u003e\n\u003cp\u003eThe tachometer output can provide fan rotation feedback to compatible monitoring circuits and help identify cooling-system faults.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eDouble Ball Bearings\u003c\/h3\u003e\n\u003cp\u003eThe listed double ball-bearing construction supports rotating operation in compatible industrial and electronic cooling applications.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eServer chassis cooling\u003c\/li\u003e\n\u003cli\u003eNetwork equipment ventilation\u003c\/li\u003e\n\u003cli\u003eIndustrial computer cooling\u003c\/li\u003e\n\u003cli\u003eCompact electronic enclosure airflow\u003c\/li\u003e\n\u003cli\u003ePower electronics thermal management\u003c\/li\u003e\n\u003cli\u003eIndustrial controller cooling\u003c\/li\u003e\n\u003cli\u003eHigh-speed equipment ventilation\u003c\/li\u003e\n\u003cli\u003eReplacement of compatible 40 mm fan assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support purchase inquiries for the Nidec UltraFlo W40S12BS4A5-57 DC Axial Cooling Fan. For bulk orders or related industrial cooling components, contact our team with your required quantity and application details. Before ordering, verify the complete model number, 12 VDC supply, 0.73 A current rating, 40 x 40 x 28 mm dimensions, four-wire connector, airflow direction and PWM\/tachometer compatibility. Confirm that the selected fan matches the existing equipment's electrical and mechanical requirements.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is Nidec W40S12BS4A5-57?\u003c\/strong\u003e\u003cbr\u003eIt is a Nidec UltraFlo W40S series DC brushless axial cooling fan designed for compatible electronic and equipment cooling applications.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the rated voltage?\u003c\/strong\u003e\u003cbr\u003eThe listed rated voltage is 12 VDC. The supplier lists an operating voltage range of 7.0–13.2 VDC for this specific model.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the rated current and power consumption?\u003c\/strong\u003e\u003cbr\u003eThe listed rated current is 0.73 A, corresponding to a nominal input power of 8.76 W at 12 VDC.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the fan dimensions?\u003c\/strong\u003e\u003cbr\u003eThe listed frame dimensions are 40 x 40 x 28 mm. Check the mounting holes and available clearance before installing a replacement.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the rated speed?\u003c\/strong\u003e\u003cbr\u003eThe supplier lists a nominal rotational speed of 18,500 RPM.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum airflow?\u003c\/strong\u003e\u003cbr\u003eThe listed maximum airflow is 0.75 m³\/min, equivalent to approximately 26.5 CFM. Actual airflow varies with system resistance.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum static pressure?\u003c\/strong\u003e\u003cbr\u003eThe listed maximum static pressure is 537 Pa, equivalent to approximately 2.16 inH₂O.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fan support PWM speed control?\u003c\/strong\u003e\u003cbr\u003eYes. The listed four-wire configuration includes a PWM control lead. Verify the compatible signal level and control method against the equipment documentation.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the fan provide rotation feedback?\u003c\/strong\u003e\u003cbr\u003eYes. The listed configuration includes a tachometer signal output for compatible fan monitoring systems.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the function of each wire?\u003c\/strong\u003e\u003cbr\u003eThe listed wiring convention is red for power, black for ground, yellow for tachometer output and blue for PWM control. Verify the pinout on the actual fan before connection.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature range?\u003c\/strong\u003e\u003cbr\u003eThe supplier lists an operating temperature range of -10°C to +70°C and a storage range of -40°C to +70°C.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCan this fan replace another 40 mm fan?\u003c\/strong\u003e\u003cbr\u003eNot automatically. Check the complete model number, frame thickness, rated voltage, current, airflow, static pressure, connector pinout and PWM\/tachometer requirements before replacement.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering?\u003c\/strong\u003e\u003cbr\u003eConfirm model W40S12BS4A5-57, 12 VDC rating, 0.73 A current, 8.76 W input, 40 x 40 x 28 mm dimensions and four-wire PWM\/tachometer connection against your equipment specifications.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"NIDEC","offers":[{"title":"Default Title","offer_id":67834994851919,"sku":"LL1-NI- W40S12BS4A557","price":10.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/W40S12BS4A5-57-01-_01.jpg?v=1792654406","url":"https:\/\/yunshuotrade.com\/products\/nidec-w40s12bs4a5-57-fan","provider":"yunshuotrade","version":"1.0","type":"link"}