{"id":3891,"date":"2023-01-16T16:03:50","date_gmt":"2023-01-16T15:03:50","guid":{"rendered":"http:\/\/lubeteam.it\/product\/po-pwo\/"},"modified":"2025-11-14T11:54:28","modified_gmt":"2025-11-14T10:54:28","slug":"po-pwo","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/po-pwo\/","title":{"rendered":"Seim PO – PWO pump"},"content":{"rendered":"

The PW Series: PWO, PWA and PWE<\/strong><\/h3>\n

The SEIM PW three-screw pump series represents the ultimate Italian solution for high-pressure coolant lubrication applications, successfully marketed worldwide for over a decade. The offering has been tripled to meet every operational requirement, while maintaining unmatched reliability and durability.<\/p>\n

PWO Pump: The Standard of Success<\/strong><\/h3>\n

The PWO model is the established and proven product of the range, specifically designed for handling high-pressure coolant and cutting oils. Its construction ensures high hydraulic efficiency and great reliability, making it the preferred choice in countless industrial contexts.<\/p>\n

PWA Pump: Advanced Technology for Fluids with Impurities<\/strong><\/h3>\n

The PWA (Advanced) model is the solution designed for applications where fluids contain particles and impurities. Thanks to a specific hardening process and advanced technological treatment applied to both the pump body and screws, it offers superior resistance to wear and abrasion, ensuring consistent performance even under demanding operating conditions.<\/p>\n

PWE Pump: The Solution for Extreme Applications<\/strong><\/h3>\n

The PWE (Evoluted) model is the advanced pump for the most severe applications. It is equipped with an internal liner made of extremely wear-resistant material, making it the ideal choice for processing very hard materials, such as stellited or heat-treated steels, where abrasion resistance is a key requirement.<\/p>\n

Construction Features and Advantages<\/strong><\/h3>\n

All pumps in the PW series share outstanding construction features. The pump body and flanges are made of GJL-250 cast iron with hardening treatment to resist wear. The screw set is manufactured with high precision to maximize hydraulic performance. Depending on the model, the screws are made of nitrided steel (PWO, hardness 1000 HV1) or alloy carbon steel treated with special processes (PWA and PWE, hardness 1500 HV1).<\/p>\n

The main advantages include:<\/p>\n

    \n
  • High hydraulic efficiency<\/strong> and great reliability.<\/li>\n
  • Low noise level<\/strong> and minimal flow pulsations.<\/li>\n
  • Self-priming capability<\/strong>.<\/li>\n
  • Externally self-lubricated bearing<\/strong>, which does not come into contact with the pumped fluid.<\/li>\n
  • Axial suction<\/strong> for simplified installation.<\/li>\n<\/ul>\n

    Integration with Inverter (VFD)<\/strong><\/h3>\n

    The PW series pumps are optimized for use with electric motors driven by inverters (Variable Frequency Drive). This solution allows maintaining constant flow or pressure as working conditions change, for example during tool changes, without stopping the motor. The benefits are significant: improved pump performance, reduced energy consumption, coolant savings, and rapid cost payback. The high hydraulic efficiency enables use over a wide speed range, typically from 1400 to 4500 rpm.<\/p>\n

    Applications and Fields of Use<\/strong><\/h3>\n

    The versatility of the PO \u2013 PWO Seim Pump makes it the preferred product for a wide portfolio of applications, including:<\/p>\n

      \n
    • Machine Tools<\/strong>: high-pressure coolant lubrication for deep drilling, machining centers, transfer machines, milling and grinding.<\/li>\n
    • Automotive Industry<\/strong>: machining of engine and transmission components.<\/li>\n
    • Centralized Systems<\/strong>: coolant plants and filtration systems.<\/li>\n
    • Marine and Energy Sector<\/strong>: all high-pressure drive and lubrication applications where the exclusive use of cast iron is required.<\/li>\n
    • General Applications<\/strong>: pumping of vegetable oils, biodiesel, light fuels, and low-lubricity fluids.<\/li>\n<\/ul>\n

      Technical summary table of the main features of PO \u2013 PWO Seim Pump<\/h3>\n
      \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Feature<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
      Handled Fluids<\/td>\nCoolant fluids (water-oil emulsion, minimum 5%), cutting oils, light fuels (LFO, LSMGO), lubricating oils (mineral and synthetic), vegetable oils, biodiesel. [cite: 180, 181]<\/td>\n<\/tr>\n
      Viscosity Range<\/td>\nFrom 1 to 10 cSt (typical) and up to 400 cSt. [cite: 182]<\/td>\n<\/tr>\n
      Pump Speed<\/td>\nUp to 4000 rpm with emulsion and low-viscosity fluids. [cite: 182]<\/td>\n<\/tr>\n
      Discharge Pressure (at 2900 rpm)<\/td>\nTypically up to 100 bar continuous (emulsion) \/ 120 bar continuous (oils). [cite: 188]<\/td>\n<\/tr>\n
      Suction Pressure<\/td>\nWith radial seal: 0 \u00f7 1.5 bar. [cite: 189] With mechanical seal: -0.5 \u00f7 10 bar. [cite: 189]<\/td>\n<\/tr>\n
      Working Temperature<\/td>\nFrom 0 to 100 \u00b0C. [cite: 191]<\/td>\n<\/tr>\n
      Recommended Filtration Grade<\/td>\n60 microns max, non-abrasive (NAS 10 \/ ISO 4406 19\/16). [cite: 199]<\/td>\n<\/tr>\n
      Body\/Flange Material<\/td>\nGJL-250 cast iron with hardening treatment. For PWE an additional liner is provided. [cite: 215]<\/td>\n<\/tr>\n
      Screw Set Material<\/td>\nPWO:<\/b> Nitrided steel, standard hardness 1000 HV1. [cite: 204]
      \nPWA\/PWE:<\/b> Alloy carbon steel, specially treated, hardness 1500 HV1. [cite: 211, 216]<\/td>\n<\/tr>\n
      Connections<\/td>\nSuction: GAS threaded (BSP). [cite: 196] Discharge: SAE 3000. [cite: 196]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      The PO \u2013 PWO Seim Pump<\/strong> is a high-reliability three-screw pump, specifically designed for use with high-pressure coolant and cutting oils. In addition to the established PWO model, the series extends with the PWA version, featuring an advanced hardening process for fluids with impurities, and the PWE, with an ultra-resistant liner for extreme applications. All versions guarantee maximum hydraulic efficiency, low noise, and self-priming capability.<\/p>\n","protected":false},"featured_media":5728,"template":"","meta":[],"product_brand":[],"product_cat":[115,110,113],"product_tag":[333],"class_list":{"0":"post-3891","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-3-screws-pumps","7":"product_cat-pumps-and-motors","8":"product_cat-seim-pumps","9":"product_tag-seim","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"yoast_head":"\nPO \u2013 PWO Seim three-screw high-pressure pump \u2013 LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Discover the PO \u2013 PWO Seim three-screw high-pressure pump. Ideal for coolant fluids and cutting oils. 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