{"product_id":"kaishan-krsd-50-rotary-screw-air-compressor","title":"Kaishan Compressors KRSD-50 Rotary Screw Air Compressor","description":"\u003c!-- more --\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; margin-bottom: 40px;\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003e237 CFM Direct Drive Rotary Screw Performance at 115 PSI\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eKaishan KRSD-50 rotary screw air compressor\u003c\/strong\u003e eliminates gearbox maintenance with its patented 1:1 direct drive system while delivering industrial-grade performance.\u003c\/p\u003e\n\u003cp\u003eYou get consistent air flow for your pneumatic tools and equipment with zero transmission losses. The \u003cstrong\u003e50 HP direct drive compressor\u003c\/strong\u003e runs at just 74 dBA while the oversized coolers handle ambient temperatures up to 122°F without breaking a sweat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/kaishan-krsd-50-variable-speed-drive-rotary-screw-compressor-angle.jpg?v=1776037898\" alt=\"Kaishan KRSD-50 50 HP direct drive rotary screw air compressor\" style=\"width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; margin-bottom: 40px;\"\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/kaishan-krsd-50-vsd-rotary-screw-compressor-internal-straight-open.jpg?v=1776037899\" alt=\"50 HP Kaishan KRSD-50 direct drive rotary screw compressor\" style=\"width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-direction: column; justify-content: center;\"\u003e\n\u003ch2\u003eVariable Speed Rotary Compressor Technology\u003c\/h2\u003e\n\u003cp\u003eThe SKK Series airend with asymmetric 5\/6 rotor profile matches motor speed to your exact air demand, delivering up to 40% energy savings with the Variable Speed model.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Drive System\u003c\/strong\u003e — belt replacement costs → eliminated with 1:1 ratio direct connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Speed Control\u003c\/strong\u003e — energy waste from oversized compressors → automatic speed matching saves up to 40%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-Stage Oil Separation\u003c\/strong\u003e — oil carryover contamination → clean air with just 3 PPM oil content\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIE3 Premium Motor\u003c\/strong\u003e — high electric bills → maximum efficiency with TEFC IP54 protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuplex SKF Bearings\u003c\/strong\u003e — premature bearing failure → extended service life with premium components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e316 Stainless Steel Piping\u003c\/strong\u003e — corrosion and leaks → long-term reliability with marine-grade materials\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversized Coolers\u003c\/strong\u003e — overheating shutdowns → continuous operation in 122°F ambient conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 30px; margin-bottom: 40px;\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eKaishan KRSD-50 Direct Drive Rotary Air Compressor Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e50 HP (37 kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eMotor Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eIE3 Premium Efficiency\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eDrive Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eDirect Drive (1:1 Ratio), No Gearbox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eAirend\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eSKK Series, Asymmetric 5\/6 Rotor Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCFM at 115 PSI (Fixed Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e237 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCFM at 125 PSI (Fixed Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e233 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCFM at 115 PSI (Variable Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e237 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCFM at 125 PSI (Variable Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e228 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCFM at 150 PSI (Variable Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e204 CFM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eMax Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e125 PSI (Fixed Speed) \/ 150 PSI (Variable Speed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eSound Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e74 dBA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e208\/230\/460V, 3-Phase, 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eMotor Frame\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eTEFC (IP54), IEC Frame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eMotor Insulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eClass F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eBearings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eDuplex SKF Bearings (Discharge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eControl Panel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eMAM-200 Digital (Fixed Speed) \/ KTL-8000 (Variable Speed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eControl Tubing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e316 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eOil Separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e3-Stage Tangential, 3 PPM Carryover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eAftercooler\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eSingle Pass, Oversized for 122°F (50°C) Ambient\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eStarter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eWYE Delta Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eWeight (Fixed Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e2,234 lbs \/ 1,013 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eWeight (Variable Speed)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e2,497 lbs \/ 1,132 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eDimensions FS (L×W×H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e70 × 40 × 52 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eDimensions VSD (L×W×H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e80 × 40 × 52 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 16px;\"\u003eCAGI, UL (cUL), ASME\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eAvailable Configurations\u003c\/h3\u003e\n\u003cp\u003eOptional \u003cstrong\u003eTank Mount\u003c\/strong\u003e, \u003cstrong\u003eIntegrated Dryer\u003c\/strong\u003e, and \u003cstrong\u003eTank + Dryer\u003c\/strong\u003e packages available. \u003c\/p\u003e\n\u003ch3\u003eTechnical Documents\u003c\/h3\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD_Web.pdf?v=1776032814\"\u003eKRSD Product Datasheet\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD_Instruction_Manual-USA_96002018000001_-A.pdf?v=1776032650\"\u003eKRSD Fixed Speed Instruction Manual\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD-VSD_Instruction_Manual_-USA_96002015000010.pdf?v=1776032726\"\u003eKRSD Variable Speed Instruction Manual\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/99002018000002-A_MAM-200_KRSD_Fixed_Speed_15_-50HP.pdf?v=1776032546\"\u003eMAM-200 Control Panel Manual\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/99002018000003-A_MAM-6090_KRSD_VSD.pdf?v=1776032621\"\u003eKTL-8000 VSD Control Manual\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD_40-50_FS_ID.pdf?v=1776036859\"\u003eKRSD 40-50 Fixed Speed Installation Drawing\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD50.pdf?v=1776036998\"\u003eKRSD-50 Fixed Speed Spec Sheet\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; align-items: center; gap: 10px; margin-bottom: 12px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/KRSD50-VSD.pdf?v=1776036990\"\u003eKRSD-50 Variable Speed Spec Sheet\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003eFor complete specifications, download the technical data sheet above.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eKaishan KRSD-50 50 HP Rotary Screw Compressor Video\u003c\/h2\u003e\n\u003cnoscript class=\"loading-lazy\"\u003e\n\u003ciframe loading=\"lazy\" width=\"1280\" height=\"720\" src=\"https:\/\/www.youtube.com\/embed\/TxO4t32Ti-M\" title=\"YouTube video   player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media;     gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e                                             \u003c\/noscript\u003e   ","brand":"Kaishan Compressors","offers":[{"title":"Fixed Speed \/ 115 PSI \/ 208V","offer_id":50800125739294,"sku":"KRSD-050A1F8S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Fixed Speed \/ 115 PSI \/ 230V","offer_id":50800125772062,"sku":"KRSD-050A1F2S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Fixed Speed \/ 115 PSI \/ 460V","offer_id":50800125804830,"sku":"KRSD-050A1F4S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Fixed Speed \/ 125 PSI \/ 208V","offer_id":50800125837598,"sku":"KRSD-050A2F8S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Fixed Speed \/ 125 PSI \/ 230V","offer_id":50800125870366,"sku":"KRSD-050A2F2S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Fixed Speed \/ 125 PSI \/ 460V","offer_id":50800125903134,"sku":"KRSD-050A2F4S8U","price":22587.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 115 PSI \/ 208V","offer_id":50782294638878,"sku":"KRSD-050A1VBS8U","price":34999.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 115 PSI \/ 460V","offer_id":50782294704414,"sku":"KRSD-050A1V4S8U","price":30172.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 125 PSI \/ 208V","offer_id":50782294737182,"sku":"KRSD-050A2VBS8U","price":34999.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 125 PSI \/ 460V","offer_id":50782294802718,"sku":"KRSD-050A2V4S8U","price":30172.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 150 PSI \/ 208V","offer_id":50782294835486,"sku":"KRSD-050A3VBS8U","price":34999.0,"currency_code":"USD","in_stock":true},{"title":"Variable Speed \/ 150 PSI \/ 460V","offer_id":50782294901022,"sku":"KRSD-050A3V4S8U","price":30172.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3629\/4686\/files\/kaishan-krsd-50-variable-speed-drive-rotary-screw-compressor-angle.jpg?v=1776037898","url":"https:\/\/aircompressorzone.com\/products\/kaishan-krsd-50-rotary-screw-air-compressor","provider":"Air Compressor Zone","version":"1.0","type":"link"}