{"id":4402,"date":"2026-03-18T06:55:20","date_gmt":"2026-03-18T06:55:20","guid":{"rendered":"https:\/\/hydrathpower.com\/?p=4402"},"modified":"2026-03-24T07:41:47","modified_gmt":"2026-03-24T07:41:47","slug":"guide-de-selection-des-hpu","status":"publish","type":"post","link":"https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/","title":{"rendered":"Comment choisir une centrale hydraulique : Guide complet d'achat"},"content":{"rendered":"<h2>Qu'est-ce qu'une centrale hydraulique ?<\/h2>\n<p>A <a href=\"\/hydraulic-power-unit\/\">unit\u00e9 de puissance hydraulique<\/a> (HPU) convertit l'\u00e9nergie \u00e9lectrique ou le moteur en \u00e9nergie hydraulique et contr\u00f4le la pression, le d\u00e9bit et la direction afin d'actionner <a href=\"\/hydraulic-cylinders\/\">v\u00e9rin<\/a> ou des moteurs.<br \/>\nLes composants typiques sont une pompe, un moteur et un r\u00e9servoir, <a href=\"\/hydraulic-manifold\/\">collecteur<\/a>\/<a href=\"\/hydraulic-cartridge-valves\/\">soupapes<\/a>, de la filtration et des capteurs.<\/p>\n<figure id=\"attachment_4404\" aria-describedby=\"caption-attachment-4404\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-300x200.jpg\" class=\"size-medium wp-image-4404 lazyload\" alt=\"Comment choisir une centrale hydraulique_ Guide complet d&#039;achat\" width=\"300\" height=\"200\"><figcaption id=\"caption-attachment-4404\" class=\"wp-caption-text\"><noscript><img decoding=\"async\" class=\"size-medium wp-image-4404\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-300x200.jpg\" alt=\"Comment choisir une centrale hydraulique_ Guide complet d&#039;achat\" width=\"300\" height=\"200\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-Choose-a-Hydraulic-Power-Unit_-Complete-Procurement-Guide.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/noscript> Comment choisir une centrale hydraulique_ Guide complet d'achat<\/figcaption><\/figure>\n<section id=\"introduction\">\n<h2>Introduction : L'importance de la s\u00e9lection<\/h2>\n<p>Le choix d'un HPU appropri\u00e9 permet d'\u00e9viter la surchauffe, la d\u00e9rive, les cycles lents et l'usure pr\u00e9matur\u00e9e.<br \/>\nUn bon dimensionnement am\u00e9liore la fiabilit\u00e9, la consommation d'\u00e9nergie et le co\u00fbt total du cycle de vie.<br \/>\nCe guide passe en revue les quatre param\u00e8tres fondamentaux, les sch\u00e9mas d'utilisation, les choix d'huile et les crit\u00e8res des fournisseurs, et se termine par une liste de contr\u00f4le que vous pouvez appliquer \u00e0 n'importe quel projet.<\/p>\n<figure id=\"attachment_4483\" aria-describedby=\"caption-attachment-4483\" style=\"width: 228px\" class=\"wp-caption alignnone\"><img decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-228x300.jpg\" class=\"size-medium wp-image-4483 lazyload\" alt=\"Comment commander un groupe hydraulique\" width=\"228\" height=\"300\"><figcaption id=\"caption-attachment-4483\" class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4483\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-228x300.jpg\" alt=\"Comment commander un groupe hydraulique\" width=\"228\" height=\"300\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-228x300.jpg 228w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-778x1024.jpg 778w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-768x1010.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack-9x12.jpg 9w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/How-to-order-hydraulic-power-pack.jpg 906w\" sizes=\"(max-width: 228px) 100vw, 228px\" \/><\/noscript> Comment commander un groupe hydraulique<\/figcaption><\/figure>\n<\/section>\n<section id=\"pressure\">\n<h2>Param\u00e8tre de base 1 : Pression (Bar\/PSI)<\/h2>\n<h3>Calcul de la pression de travail<\/h3>\n<ul>\n<li>Formule : Pression = Force \/ Surface<\/li>\n<li>Force du v\u00e9rin (N) = Pression (Pa) \u00d7 Surface (m\u00b2). Unit\u00e9s pratiques : Pression (bar) \u2248 (Force (kN) \u00f7 Surface (cm\u00b2)) \u00d7 10.<\/li>\n<li>Exemple : Un m\u00e2t de levage a besoin de 8 kN. Surface d'al\u00e9sage du v\u00e9rin = 20 cm\u00b2. Pression requise \u2248 (8 \u00f7 20) \u00d7 10 = 40 bar. Les syst\u00e8mes r\u00e9els fonctionnent souvent entre 140 et 210 bars pour une commande stable ; ajoutez une marge.<\/li>\n<\/ul>\n<h3>Plages de pression typiques par application<\/h3>\n<ul>\n<li>Ascenseurs mobiles, <a href=\"\/hydraulic-mast-power-unit\/\">m\u00e2ts<\/a>, tipper\/<a href=\"\/dump-trailer-hydraulic-pump\/\">remorques \u00e0 benne basculante<\/a>: 140-210 bar<\/li>\n<li>Plates-formes industrielles, presses, outillage : 210-315 bar<\/li>\n<li>Test et tension : 350-700 bar (5 000-10 000 psi)<br \/>\n<div id='gallery-1' class='gallery galleryid-4402 gallery-columns-5 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/mobile-lifts-hydraulic-power-unit\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"Unit\u00e9 de puissance hydraulique pour ascenseurs mobiles\" aria-describedby=\"gallery-1-4405\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-lifts-Hydraulic-Power-Unit.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-4405'>\n\t\t\t\tUnit\u00e9 de puissance hydraulique pour ascenseurs mobiles\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/dump-trailer-hydraulic-power-unit\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"Remorque \u00e0 benne basculante Unit\u00e9 de puissance hydraulique\" aria-describedby=\"gallery-1-4406\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/dump-trailer-Hydraulic-Power-Unit.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-4406'>\n\t\t\t\tRemorque \u00e0 benne basculante Unit\u00e9 de puissance hydraulique\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n<\/li>\n<\/ul>\n<h3>Pression et durabilit\u00e9 des mat\u00e9riaux<\/h3>\n<ul>\n<li><a href=\"\/hydraulic-check-valve\/\">Clapet anti-retour<\/a>\/(cavit\u00e9s CETOP), les valeurs nominales d'\u00e9clatement des tuyaux et la compatibilit\u00e9 des joints \u00e0 la pression et \u00e0 la temp\u00e9rature maximales.<\/li>\n<li>Respecter les valeurs nominales des composants ISO\/DIN\/SAE ; ajouter une marge pour les pointes transitoires.<\/li>\n<\/ul>\n<\/section>\n<section id=\"flow-rate\">\n<h2>Param\u00e8tre de base 2 : d\u00e9bit (LPM\/GPM)<\/h2>\n<h3>M\u00e9thode de calcul des LPM<\/h3>\n<p>D\u00e9bit (L\/min) = (Surface du cylindre (cm\u00b2) \u00d7 Vitesse (cm\/s) \u00d7 60) \u00f7 1000.<\/p>\n<p>Exemple : Surface de l'al\u00e9sage 20 cm\u00b2, vitesse cible 2 cm\/s \u2192 LPM = (20 \u00d7 2 \u00d7 60) \u00f7 1000 = 2,4 L\/min.<\/p>\n<h3>D\u00e9bit en fonction de la vitesse d'actionnement<\/h3>\n<ul>\n<li>Un LPM plus \u00e9lev\u00e9 augmente la vitesse ; v\u00e9rifiez la stabilit\u00e9 et le contr\u00f4le de l'abaissement (les circuits \u00e0 double effet sont utiles).<\/li>\n<li>Utiliser des vannes de r\u00e9gulation de d\u00e9bit pour r\u00e9gler la vitesse et \u00e9viter les oscillations.<\/li>\n<\/ul>\n<h3>Besoins en refroidissement<\/h3>\n<ul>\n<li>Un nombre \u00e9lev\u00e9 de LPM \u00e0 haute pression g\u00e9n\u00e8re de la chaleur ; surveillez la temp\u00e9rature de l'huile.<\/li>\n<li>D\u00e9clencher un refroidissement externe lorsque la temp\u00e9rature de l'huile d\u00e9passe les sp\u00e9cifications ou que le cycle de travail est presque continu.<\/li>\n<\/ul>\n<\/section>\n<section id=\"power\">\n<h2>Param\u00e8tre essentiel 3 : Puissance (kW\/HP)<\/h2>\n<h3>Adaptation de la puissance du moteur<\/h3>\n<ul>\n<li>kW hydraulique \u2248 (Pression (bar) \u00d7 D\u00e9bit (L\/min)) \u00f7 600 (diviser par le rendement pour le dimensionnement du moteur).<\/li>\n<li>HP hydraulique \u2248 (Pression (psi) \u00d7 D\u00e9bit (GPM)) \u00f7 1714.<\/li>\n<li>Exemple : 180 bar \u00d7 8 L\/min \u2192 kW \u2248 2,4 kW. Avec le rendement 80%, le moteur \u2248 3,0 kW.<\/li>\n<\/ul>\n<h3>Classe d'efficacit\u00e9<\/h3>\n<ul>\n<li>Pr\u00e9f\u00e9rer les moteurs et les pompes ayant un bon rendement global ; r\u00e9duire la chaleur et la consommation d'\u00e9nergie.<\/li>\n<li>CC ou CA : le CC convient aux appareils mobiles 12\/24 V ; le CA convient aux appareils stationnaires et aux puissances continues plus \u00e9lev\u00e9es.<\/li>\n<\/ul>\n<\/section>\n<section id=\"reservoir\">\n<h2>Param\u00e8tre fondamental 4 : Capacit\u00e9 des r\u00e9servoirs<\/h2>\n<h3>Dissipation de la chaleur<\/h3>\n<ul>\n<li>Plus grand <a href=\"\/hydraulic-tank\/\">r\u00e9servoirs<\/a> augmenter le temps de s\u00e9jour de l'huile et le rejet de la chaleur.<\/li>\n<li>R\u00e8gle g\u00e9n\u00e9rale : volume du r\u00e9servoir \u2248 2-4\u00d7 d\u00e9bit de la pompe par minute (\u00e0 ajuster en fonction du service et de l'environnement).\n<p><figure id=\"attachment_4411\" aria-describedby=\"caption-attachment-4411\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" data-src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-300x200.jpg\" class=\"size-medium wp-image-4411 lazyload\" alt=\"unit\u00e9 de puissance hydraulique R\u00e9servoir\" width=\"300\" height=\"200\"><figcaption id=\"caption-attachment-4411\" class=\"wp-caption-text\"><noscript><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-4411\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-300x200.jpg\" alt=\"unit\u00e9 de puissance hydraulique R\u00e9servoir\" width=\"300\" height=\"200\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hydraulic-power-unit-Reservoir.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/noscript> unit\u00e9 de puissance hydraulique R\u00e9servoir<\/figcaption><\/figure><\/li>\n<\/ul>\n<h3>Dur\u00e9e du cycle du syst\u00e8me<\/h3>\n<ul>\n<li>Assurer un volume suffisant pour les courses du cylindre sans a\u00e9ration ; ajouter un reniflard\/remplissage et une filtration.<\/li>\n<li>Syst\u00e8mes ext\u00e9rieurs : utiliser des contr\u00f4les pilot\u00e9s pour \u00e9viter la d\u00e9rive et maintenir les charges stables sous l'effet du vent.<\/li>\n<\/ul>\n<\/section>\n<section id=\"application-decisions\">\n<h2>D\u00e9cisions relatives \u00e0 la demande<\/h2>\n<h3>Continu ou intermittent<\/h3>\n<ul>\n<li>Continu : dimensionner le moteur pour un fonctionnement continu ; ajouter une capacit\u00e9 de refroidissement et de filtration.<\/li>\n<li>Intermittent (S3) : un moteur plus petit est acceptable ; v\u00e9rifier la fr\u00e9quence des cycles et les p\u00e9riodes de repos.<br \/>\n<div id='gallery-2' class='gallery galleryid-4402 gallery-columns-5 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/hpu-dc-motor\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"moteur c.c. hpu\" aria-describedby=\"gallery-2-4407\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-dc-motor.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-4407'>\n\t\t\t\tMoteur CC HPU\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/hpu-ac-motor\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"moteur \u00e0 courant alternatif hpu\" aria-describedby=\"gallery-2-4408\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/hpu-ac-motor.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-4408'>\n\t\t\t\tHPU AC Motor\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n<\/li>\n<\/ul>\n<h3>Mobile ou stationnaire<\/h3>\n<ul>\n<li>Mobile : DC 12\/24 V, collecteurs compacts, bo\u00eetiers ext\u00e9rieurs, c\u00e2blage \u00e0 distance, faible bruit.<\/li>\n<li>Stationnaire : AC 220\/380 V, r\u00e9servoirs plus grands, options de service continu, disposition conviviale.<\/li>\n<\/ul>\n<h3>Exemples sectoriels<\/h3>\n<ul>\n<li>Machines industrielles : 210-315 bar ; 10-60 LPM ; <a href=\"\/ac-motor\/\">Moteurs \u00e0 courant alternatif<\/a>; CETOP D03\/D05.<\/li>\n<li>\u00c9quipement de construction\/mobile : 140-210 bar ; 2-15 LPM ; <a href=\"\/dc-motor\/\">Moteurs \u00e0 courant continu<\/a>; contr\u00f4les pilotes ; bo\u00eetiers robustes.<\/li>\n<li>Agriculture : large gamme ; v\u00e9rifier la poussi\u00e8re, les variations de temp\u00e9rature et l'acc\u00e8s aux services.<br \/>\n<div id='gallery-3' class='gallery galleryid-4402 gallery-columns-5 gallery-size-medium'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/mobile-hydraulic-power-unit-3\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"Centrale hydraulique mobile\" aria-describedby=\"gallery-3-4409\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/Mobile-hydraulic-power-unit.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-3-4409'>\n\t\t\t\tCentrale hydraulique mobile\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/hydrathpower.com\/fr\/hpu-selection-guide\/stationary-hydraulic-power-unit\/'><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"groupe hydraulique stationnaire\" aria-describedby=\"gallery-3-4410\" srcset=\"https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit-300x200.jpg 300w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit-1024x683.jpg 1024w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit-768x512.jpg 768w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit-18x12.jpg 18w, https:\/\/hydrathpower.com\/wp-content\/uploads\/2026\/03\/stationary-hydraulic-power-unit.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-3-4410'>\n\t\t\t\tgroupe hydraulique stationnaire\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n<\/li>\n<\/ul>\n<\/section>\n<section id=\"hydraulic-oil\">\n<h2>S\u00e9lection de l'huile hydraulique<\/h2>\n<h3>Min\u00e9ral ou synth\u00e9tique<\/h3>\n<ul>\n<li>Min\u00e9ral : commun, rentable, grande compatibilit\u00e9.<\/li>\n<li>Synth\u00e9tique : meilleure stabilit\u00e9 \u00e0 la temp\u00e9rature et r\u00e9sistance \u00e0 l'oxydation ; v\u00e9rifier la compatibilit\u00e9 des joints.<\/li>\n<\/ul>\n<h3>Huiles biod\u00e9gradables<\/h3>\n<p>Tenir compte des exigences environnementales ; valider l'indice de viscosit\u00e9 et la compatibilit\u00e9 des mat\u00e9riaux.<\/p>\n<h3>Notes pratiques<\/h3>\n<p>Adapter la viscosit\u00e9 \u00e0 la pompe et aux conditions ambiantes ; maintenir la propret\u00e9 par la filtration et l'analyse p\u00e9riodique.<\/p>\n<\/section>\n<section id=\"brand-supplier\">\n<h2>Crit\u00e8res relatifs \u00e0 la marque et au fournisseur<\/h2>\n<h3>OEM ou sur mesure<\/h3>\n<ul>\n<li>OEM : livraison plus rapide, pi\u00e8ces standardis\u00e9es, routines d'essai \u00e9prouv\u00e9es.<\/li>\n<li>Sur mesure : collecteurs sur mesure, tensions\/d\u00e9bits sp\u00e9ciaux, accessoires int\u00e9gr\u00e9s.<\/li>\n<\/ul>\n<h3>Service apr\u00e8s-vente<\/h3>\n<ul>\n<li>Demandez des rapports d'essais de pression\/d\u00e9bit, des sch\u00e9mas de c\u00e2blage, des kits de rechange et des pr\u00e9cisions sur les d\u00e9lais de livraison\/qualit\u00e9 optimale.<\/li>\n<li>\u00c9valuer la qualit\u00e9 de la documentation et la rapidit\u00e9 de r\u00e9ponse.<\/li>\n<\/ul>\n<\/section>\n<section id=\"comparison\">\n<h2>Comparaison : Unit\u00e9s d'alimentation en courant continu et en courant alternatif<\/h2>\n<table>\n<thead>\n<tr>\n<th>Fonctionnalit\u00e9<\/th>\n<th>DC (12\/24 V)<\/th>\n<th>AC (220\/380 V)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Utilisation typique<\/td>\n<td>\u00c9quipements mobiles<\/td>\n<td>Stationnaire\/industriel<\/td>\n<\/tr>\n<tr>\n<td>Devoirs<\/td>\n<td>Intermittent (S3)<\/td>\n<td>Options continues<\/td>\n<\/tr>\n<tr>\n<td>Bruit\/chaleur<\/td>\n<td>Faible niveau de bruit ; surveillance de la chaleur dans les bo\u00eetiers \u00e9tanches<\/td>\n<td>G\u00e9rer la chaleur avec des r\u00e9servoirs\/refroidissements plus importants<\/td>\n<\/tr>\n<tr>\n<td>Gamme de puissance<\/td>\n<td>Jusqu'\u00e0 ~4 kW typiques<\/td>\n<td>Jusqu'\u00e0 ~7,5 kW typique<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Conclusion : Choisissez le courant continu pour les d\u00e9ploiements mobiles ; choisissez le courant alternatif pour un service continu et des d\u00e9bits soutenus plus \u00e9lev\u00e9s.<\/p>\n<\/section>\n<section id=\"sizing-steps\">\n<h2>Comment dimensionner une HPU (5 \u00e9tapes)<\/h2>\n<ol>\n<li>D\u00e9finir la force et la vitesse requises pour chaque actionneur.<\/li>\n<li>Calculer la pression minimale et le LPM ; ajouter des marges pour les pertes.<\/li>\n<li>Calculer le kW hydraulique et s\u00e9lectionner le moteur avec une marge d'efficacit\u00e9.<\/li>\n<li>Dimensionner le r\u00e9servoir et la filtration ; pr\u00e9voir le refroidissement si le travail est continu.<\/li>\n<li>Confirmer la tension, le type de collecteur (CETOP), les orifices et les exigences ext\u00e9rieures.<\/li>\n<\/ol>\n<\/section>\n<section id=\"faqs\">\n<h2>Questions fr\u00e9quemment pos\u00e9es<\/h2>\n<h3>Quel est le moyen le plus s\u00fbr d'estimer la taille du moteur ?<\/h3>\n<p>Utiliser kW \u2248 (bar \u00d7 LPM) \u00f7 600 et diviser par le rendement ; ajouter une marge pour les d\u00e9marrages et les transitoires.<\/p>\n<h3>Ai-je besoin de circuits \u00e0 double effet ?<\/h3>\n<p>Pour un abaissement contr\u00f4l\u00e9 et une r\u00e9sistance au vent, les circuits \u00e0 double effet sont pr\u00e9f\u00e9rables.<\/p>\n<h3>Quelle doit \u00eatre la taille du r\u00e9servoir ?<\/h3>\n<p>Commencer avec un d\u00e9bit de 2 \u00e0 4 fois le d\u00e9bit de la pompe par minute et ajuster en fonction de la dur\u00e9e du cycle et des conditions ambiantes.<\/p>\n<h3>Quelle huile choisir ?<\/h3>\n<p>Choisir la viscosit\u00e9 en fonction de la plage de temp\u00e9rature ; v\u00e9rifier la compatibilit\u00e9 des joints ; consid\u00e9rer les produits synth\u00e9tiques ou biod\u00e9gradables en fonction de l'environnement.<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>What is a Hydraulic Power Unit? A hydraulic power unit (HPU) converts electrical or engine power into hydraulic energy and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4414,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4402","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Choose a Hydraulic Power Unit: Complete Procurement Guide - Hydrath Power<\/title>\n<meta name=\"description\" content=\"Learn how to size an HPU step by step: calculate pressure and LPM, match motor power, pick reservoir capacity, and select oil types. 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