{"id":5584,"date":"2023-07-10T10:24:49","date_gmt":"2023-07-10T08:24:49","guid":{"rendered":"https:\/\/lubeteam.it\/?post_type=product&p=5584"},"modified":"2025-11-14T11:54:20","modified_gmt":"2025-11-14T10:54:20","slug":"p04-pumps","status":"publish","type":"product","link":"https:\/\/lubeteam.it\/en\/product\/p04-pumps\/","title":{"rendered":"P04 pumps"},"content":{"rendered":"
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Operation and Application Range<\/h3>\n

The Berarma P04 Pumps<\/strong> are variable displacement vane pumps<\/strong> with a hydraulic pressure compensator<\/strong>. They instantly adjust the flow rate to match the circuit demand: once the set pressure<\/strong> is reached, the flow decreases until it reaches zero, maintaining an almost constant pressure; with zero demand, the pump only delivers the oil necessary to compensate for leakages and pilot flows.<\/p>\n

Standard Features<\/h3>\n
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  • \n

    Maximum operating pressure:<\/strong> 210 bar; adjustment range:<\/strong> 20 \u00f7 210 bar.<\/p>\n<\/li>\n

  • \n

    Nominal displacement:<\/strong> 8 cm\u00b3\/rev; actual:<\/strong> 8.4 cm\u00b3\/rev (\u00b13%).<\/p>\n<\/li>\n

  • \n

    Flow at 1450 rpm:<\/strong> 12 l\/min.<\/p>\n<\/li>\n

  • \n

    Speed range:<\/strong> 350 \u00f7 2000 rpm (ensure proper inlet line sizing at high speeds to avoid cavitation).<\/p>\n<\/li>\n

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    Direction of rotation:<\/strong> right-hand (clockwise) viewed from shaft side; shaft loads:<\/strong> radial and axial forces not permitted.<\/p>\n<\/li>\n

  • \n

    Moment of inertia:<\/strong> 0.000028 kg\u00b7m\u00b2.<\/p>\n<\/li>\n<\/ul>\n

    Fluids, Viscosity and Cleanliness<\/h3>\n

    Approved fluids: HM<\/strong> (ISO 6743-4), HLP<\/strong> (DIN 51524-2), HEES<\/strong> (ISO 15380) and HFD<\/strong> (ISO 12922) with FPM-Viton seals<\/strong> and Pmax 160 bar<\/strong>; HFC<\/strong> (ISO 12922) with water <40%<\/strong>, NBR seals<\/strong>, Pmax 100 bar<\/strong>, Vmax 1000 rpm<\/strong>, T <40 \u00b0C<\/strong>. Operating viscosity:<\/strong> 22 \u00f7 68 cSt; at startup (open outlet):<\/strong> max 400 cSt; viscosity index:<\/strong> \u2265100 (ISO 2909). Fluid temperature at inlet:<\/strong> +15 \u00f7 +60 \u00b0C. Maximum contamination:<\/strong> ISO 4406 20\/18\/15<\/strong> \u2013 NAS 1638 Class 9<\/strong>; recommended:<\/strong> ISO 4406 18\/16\/13<\/strong> \u2013 NAS 1638 Class 7<\/strong>.<\/p>\n

    Connections, Flanges and Weight<\/h3>\n

    Connections Gas BSP<\/strong>: Suction 3\/8″<\/strong>, Delivery 3\/8″<\/strong>, Drain 1\/4″<\/strong>. \u201cG\u201d flange<\/strong>: European type gear group 1, Gas BSP fittings. Single pump weight:<\/strong> S 2.9 kg<\/strong> \u00b7 R 3.3 kg<\/strong> \u00b7 D 3.6 kg<\/strong> \u00b7 LR 3.6 kg<\/strong> \u00b7 LD 3.9 kg<\/strong>.<\/p>\n

    Control Variants (Pressure\/Flow)<\/h3>\n
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    • \n

      S:<\/strong> single pressure stage (adjustment via screw and locknut).<\/p>\n<\/li>\n

    • \n

      R:<\/strong> single stage with remote adjustment<\/strong> via remote relief valve (recommended valves 2\u20135 l\/min, tube \u22645 m).<\/p>\n<\/li>\n

    • \n

      D:<\/strong> dual pressure stage<\/strong>, electrical switching 24 VDC<\/strong> (DIN 43650 type A<\/strong> connector).<\/p>\n<\/li>\n

    • \n

      LR:<\/strong> Load Sensing<\/strong> in single stage<\/strong>, with optional remote adjustment<\/strong> (signal \u0394p taken after restrictor; recommended valves 2\u20135 l\/min, tube \u22645 m).<\/p>\n<\/li>\n

    • \n

      LD:<\/strong> Load Sensing<\/strong> with two adjustable stages<\/strong>; MIN = \u0394p<\/strong>; switching 24 VDC<\/strong> (DIN 43650 type A).<\/p>\n<\/li>\n<\/ul>\n

      Available Adjustments<\/h3>\n

      Pressure:<\/strong> increase by turning clockwise (respect ranges; do not alter MIN for R\/LR controls; in LD, MIN equals \u0394p).
      Flow\/displacement:<\/strong> mechanical regulator<\/strong> to limit maximum displacement; displacement reduction per screw turn:<\/strong> 5.3 cm\u00b3\/rev<\/strong>; minimum displacement:<\/strong> not specified (*). Startup allowed with settings <50% if both pump and system are completely filled with fluid.<\/p>\n

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      Technical Summary Table of the Main Features of Berarma P04 Pumps<\/strong><\/h3>\n<\/div>\n<\/div>\n<\/div>\n
      \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      Parameter<\/th>\nValue<\/th>\n<\/tr>\n<\/thead>\n
      Designation \/ Series<\/td>\nP04-8<\/td>\n<\/tr>\n
      Nominal displacement (ISO 3662)<\/td>\n8 cm\u00b3\/rev<\/td>\n<\/tr>\n
      Actual displacement<\/td>\n8.4 cm\u00b3\/rev (\u00b13%)<\/td>\n<\/tr>\n
      Flow at 1450 rpm<\/td>\n12 l\/min<\/td>\n<\/tr>\n
      Maximum operating pressure<\/td>\n210 bar<\/td>\n<\/tr>\n
      Pressure adjustment range<\/td>\n20 \u00f7 210 bar<\/td>\n<\/tr>\n
      Maximum drain pressure<\/td>\n1 bar<\/td>\n<\/tr>\n
      Inlet pressure<\/td>\n0.8 \u00f7 1.5 bar absolute<\/td>\n<\/tr>\n
      Speed range<\/td>\n350 \u00f7 2000 rpm<\/td>\n<\/tr>\n
      Direction of rotation<\/td>\nRight-hand (clockwise) viewed from shaft side<\/td>\n<\/tr>\n
      Shaft loads<\/td>\nNo radial or axial forces allowed<\/td>\n<\/tr>\n
      Approved fluids<\/td>\nHM (ISO 6743-4) \u00b7 HLP (DIN 51524-2) \u00b7 HEES (ISO 15380) \u00b7 HFD (ISO 12922) \u00b7 HFC (ISO 12922)<\/td>\n<\/tr>\n
      Seal notes \/ limitations<\/td>\nHEES\/HFD: FPM-Viton, Pmax 160 bar \u00b7 HFC: water <40%, NBR, Pmax 100 bar, Vmax 1000 rpm, T <40\u00b0C<\/td>\n<\/tr>\n
      Operating viscosity<\/td>\n22 \u00f7 68 cSt<\/td>\n<\/tr>\n
      Viscosity at startup (open outlet)<\/td>\n400 cSt max<\/td>\n<\/tr>\n
      Viscosity index (ISO 2909)<\/td>\n\u2265 100<\/td>\n<\/tr>\n
      Fluid temperature at inlet<\/td>\n+15 \u00f7 +60 \u00b0C<\/td>\n<\/tr>\n
      Max acceptable contamination<\/td>\nISO 4406: 20\/18\/15 \u00b7 NAS 1638: Class 9<\/td>\n<\/tr>\n
      Recommended contamination level<\/td>\nISO 4406: 18\/16\/13 \u00b7 NAS 1638: Class 7<\/td>\n<\/tr>\n
      Moment of inertia<\/td>\n0.000028 kg\u00b7m\u00b2<\/td>\n<\/tr>\n
      Single pump weight \u2014 Control S<\/td>\n2.9 kg<\/td>\n<\/tr>\n
      Single pump weight \u2014 Control R<\/td>\n3.3 kg<\/td>\n<\/tr>\n
      Single pump weight \u2014 Control D<\/td>\n3.6 kg<\/td>\n<\/tr>\n
      Single pump weight \u2014 Control LR<\/td>\n3.6 kg<\/td>\n<\/tr>\n
      Single pump weight \u2014 Control LD<\/td>\n3.9 kg<\/td>\n<\/tr>\n
      Pressure\/flow controls<\/td>\nS \u00b7 R \u00b7 D \u00b7 LR \u00b7 LD<\/td>\n<\/tr>\n
      Connections<\/td>\nSuction 3\/8″ Gas BSP \u00b7 Delivery 3\/8″ Gas BSP \u00b7 Drain 1\/4″ Gas BSP<\/td>\n<\/tr>\n
      Flange \/ Fittings<\/td>\n\u201cG\u201d flange (European gear group 1) \u00b7 Gas BSP<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

      The P04 pumps<\/strong> are variable displacement vane pumps designed for high operating pressures, equipped with a hydraulic pressure control device that allows the delivered flow to instantly adjust according to the circuit\u2019s demand.<\/p>\n

      Variable displacement vane pumps are positive displacement pumps; therefore, they deliver a maximum flow rate equivalent to their displacement multiplied by the rotational speed.<\/p>\n

      The operating pressure is generated by the pressure losses the fluid encounters along its path through the system. When the outlet pressure (in the system) reaches the pump\u2019s set pressure, the delivered flow automatically adjusts to the system\u2019s demand; once this value is reached, the pump reduces its flow down to zero while maintaining an almost constant pressure. Under zero-demand conditions, the pump only delivers oil to compensate for possible leakages and pilot flows.<\/p>\n","protected":false},"featured_media":5586,"template":"","meta":[],"product_brand":[],"product_cat":[116,110],"product_tag":[316],"class_list":{"0":"post-5584","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-berarma-pumps","7":"product_cat-pumps-and-motors","8":"product_tag-berama","10":"first","11":"instock","12":"shipping-taxable","13":"product-type-simple"},"yoast_head":"\nP04 pumps - LTH - LubeTeam Hydraulic<\/title>\n<meta name=\"description\" content=\"Berarma P04 Pumps, variable vane type, 8 cm\u00b3\/rev, up to 210 bar, compact and versatile for high-efficiency hydraulic systems.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lubeteam.it\/en\/product\/p04-pumps\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P04 pumps\" \/>\n<meta property=\"og:description\" content=\"Berarma P04 Pumps, variable vane type, 8 cm\u00b3\/rev, up to 210 bar, compact and versatile for high-efficiency hydraulic systems.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lubeteam.it\/en\/product\/p04-pumps\/\" \/>\n<meta property=\"og:site_name\" content=\"LubeTeam Hydraulic\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/lubeteam\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-14T10:54:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lubeteam.it\/wp-content\/uploads\/2023\/07\/Pompe-P04-removebg-preview.png\" \/>\n\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lubeteam.it\/en\/product\/p04-pumps\/\",\"url\":\"https:\/\/lubeteam.it\/en\/product\/p04-pumps\/\",\"name\":\"P04 pumps - 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