{"id":1687,"date":"2026-07-08T18:05:12","date_gmt":"2026-07-08T16:05:12","guid":{"rendered":"https:\/\/www.tfsoleodinamica.it\/?page_id=1687"},"modified":"2026-07-08T19:21:57","modified_gmt":"2026-07-08T17:21:57","slug":"faq","status":"publish","type":"page","link":"https:\/\/www.tfsoleodinamica.it\/en\/faq\/","title":{"rendered":"Frequently asked questions on hydraulics \u2013 TFS FAQ"},"content":{"rendered":"<style>.kb-row-layout-id1687_hero > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1687_hero > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1687_hero > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:40px;padding-bottom:30px;grid-template-columns:minmax(0, 1fr);}.kb-row-layout-id1687_hero > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1687_hero > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}@media all and (max-width: 767px){.kb-row-layout-id1687_hero > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1687_hero alignnone has-theme-palette9-background-color kt-row-has-bg wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-1-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1687_hero_col > .kt-inside-inner-col,.kadence-column1687_hero_col > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1687_hero_col > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1687_hero_col > .kt-inside-inner-col{flex-direction:column;}.kadence-column1687_hero_col > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1687_hero_col > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1687_hero_col{position:relative;}@media all and (max-width: 1024px){.kadence-column1687_hero_col > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1687_hero_col > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1687_hero_col\"><div class=\"kt-inside-inner-col\">\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"color:#305473;font-size:18px;line-height:1.5;font-weight:600;\">Technical answers to the most searched questions about hydraulic pumps, motors, power units and components \u2014 from the technical team of Tecno Fluid Service, a hydraulics leader since 1997 and partner of Bosch Rexroth, H\u00e4gglunds and Kawasaki. Every answer comes from real test-bench and field experience, across Europe and the Mediterranean.<\/p>\n\n<\/div><\/div>\n\n<\/div><\/div>\n<style>.kb-row-layout-id1687_main > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id1687_main > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id1687_main > .kt-row-column-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:var(--global-kb-gap-md, 2rem);padding-top:var(--global-kb-spacing-sm, 1.5rem);padding-bottom:var(--global-kb-spacing-sm, 1.5rem);grid-template-columns:minmax(0, calc(20% - ((var(--global-kb-gap-md, 2rem) * 2 )\/3)))minmax(0, calc(55% - ((var(--global-kb-gap-md, 2rem) * 2 )\/3)))minmax(0, calc(25% - ((var(--global-kb-gap-md, 2rem) * 2 )\/3)));}.kb-row-layout-id1687_main > .kt-row-layout-overlay{opacity:0.30;}@media all and (max-width: 1024px){.kb-row-layout-id1687_main > .kt-row-column-wrap > div:not(.added-for-specificity){grid-column:initial;}}@media all and (max-width: 1024px){.kb-row-layout-id1687_main > .kt-row-column-wrap{grid-template-columns:repeat(3, minmax(0, 1fr));}}@media all and (max-width: 767px){.kb-row-layout-id1687_main > .kt-row-column-wrap > div:not(.added-for-specificity){grid-column:initial;}.kb-row-layout-id1687_main > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr);}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id1687_main alignnone wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-3-columns kt-row-layout-custom kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-top\">\n<style>.kadence-column1687_col_nav > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column1687_col_nav > .kt-inside-inner-col,.kadence-column1687_col_nav > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1687_col_nav > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1687_col_nav > .kt-inside-inner-col{flex-direction:column;}.kadence-column1687_col_nav > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1687_col_nav > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1687_col_nav{position:relative;}@media all and (max-width: 1024px){.kadence-column1687_col_nav > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1687_col_nav > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1687_col_nav tfs-service-nav-col\"><div class=\"kt-inside-inner-col\">\n\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"color:#305473;\">Our Services<\/h4>\n\n\n\n<ul class=\"wp-block-list tfs-service-nav-list\"><li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/pump-and-motor-repair\/\">Pump and motor repair<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/design-of-hydraulic-systems\/\">System design<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/construction-of-hydroelectric-power-plants\/\">Construction of hydraulic power plants<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/overhaul-of-hydraulic-components\/\">Component overhauls<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/on-site-support\/\">On-site support<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/hydraulic-piping-systems\/\">Piping systems<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/commissioning\/\">Commissioning<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/scheduled-maintenance\/\">Scheduled maintenance<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/testing-and-certification\/\">Testing and certification<\/a><\/li>\n<li><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/software-development\/\">Software development<\/a><\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\"><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/\">\u2190 All services<\/a><\/p>\n\n<\/div><\/div>\n\n<style>.kadence-column1687_col_main > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column1687_col_main > .kt-inside-inner-col,.kadence-column1687_col_main > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1687_col_main > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1687_col_main > .kt-inside-inner-col{flex-direction:column;}.kadence-column1687_col_main > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1687_col_main > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1687_col_main{position:relative;}@media all and (max-width: 1024px){.kadence-column1687_col_main > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1687_col_main > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1687_col_main\"><div class=\"kt-inside-inner-col\">\n\n<h2 class=\"wp-block-heading\">Index of questions<\/h2>\n\n\n<p class=\"wp-block-paragraph\"><strong>Definitions<\/strong><\/p>\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#q1-oleodinamica\">What is hydraulics (oleodynamics)?<\/a><\/li><li><a href=\"#q2-oleoidraulica\">Oleodynamics vs oleohydraulics<\/a><\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\"><strong>How it works<\/strong><\/p>\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#q3-pompa\">How a hydraulic pump works<\/a><\/li><li><a href=\"#q4-centralina\">How a power unit works<\/a><\/li><li><a href=\"#q5-motore\">How a hydraulic motor works<\/a><\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\"><strong>Technical differences<\/strong><\/p>\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#q6-ingranaggi\">External vs internal gear pumps<\/a><\/li><li><a href=\"#q7-servovalvola\">Servo vs proportional valve<\/a><\/li><li><a href=\"#q8-pistoni\">Axial vs radial piston<\/a><\/li><\/ul>\n\n\n<p class=\"wp-block-paragraph\"><strong>Repair and maintenance<\/strong><\/p>\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#q9-riparare-sostituire\">Repair or replace a pump<\/a><\/li><li><a href=\"#q10-banco-prova\">What is a certified test bench<\/a><\/li><li><a href=\"#q11-manutenzione\">How often to service<\/a><\/li><li><a href=\"#q12-scegliere-pompa\">How to choose the pump<\/a><\/li><li><a href=\"#q13-multimarca\">What multi-brand overhaul means<\/a><\/li><\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"color:#022442\">Definitions<\/h3>\n\n\n<h2 class=\"wp-block-heading\" id=\"q1-oleodinamica\">What is hydraulics (oleodynamics)?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Hydraulics (oleodynamics) is the technology that transmits power through a pressurised fluid (oil). A pump converts mechanical energy into hydraulic energy; actuators such as cylinders and motors convert it back into motion. It allows very high forces to be controlled in a small space, with precision and continuity.<\/p>\n\n\n<p class=\"wp-block-paragraph\">It is the principle behind presses, excavators, agricultural machines, marine and steel-industry plants. The main components of a hydraulic system are: <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/piston-pumps\/\">pump<\/a>, <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/control-units-and-hydraulic-systems\/\">power unit<\/a>, <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/valves-and-distributors\/\">valves<\/a>, <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/hydraulic-motors\/\">motors<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/cylinders-and-actuators\/\">cylinders<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q2-oleoidraulica\">What is the difference between oleodynamics and oleohydraulics?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">There is no substantial difference: &laquo;oleodynamics&raquo; and &laquo;oleohydraulics&raquo; refer to the same technology \u2014 power transmission through pressurised oil. In English both are commonly called &laquo;hydraulics&raquo;.<\/p>\n\n\n<p class=\"wp-block-paragraph\">They should not be confused with <strong>pneumatics<\/strong>, which uses compressed air instead of oil: air is compressible, so pneumatics offers lower forces and less precise positioning than hydraulics.<\/p>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"color:#022442\">How it works<\/h3>\n\n\n<h2 class=\"wp-block-heading\" id=\"q3-pompa\">How does a hydraulic pump work?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">A hydraulic pump draws oil from the tank and pushes it into the circuit, generating <strong>flow<\/strong>. It does not directly &laquo;create&raquo; pressure: pressure arises from the resistance the circuit opposes to the flow. By converting mechanical energy into hydraulic energy, it powers the whole system.<\/p>\n\n\n<p class=\"wp-block-paragraph\">The main families are: <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/gear-pumps\/\">gear pumps<\/a> (simple and economical), vane pumps, and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/piston-pumps\/\">piston pumps<\/a> (high pressure, fixed or variable displacement \u2014 e.g. Bosch Rexroth A4VG, Kawasaki K3V). TFS repairs and overhauls pumps of all types on a <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/pump-and-motor-repair\/\">certified test bench<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q4-centralina\">How does a hydraulic power unit work?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">A hydraulic power unit is the assembly that generates and regulates the flow of pressurised oil for a system. It consists of tank, pump, electric motor, control valves, filters and instrumentation. The pump pressurises the oil; the valves regulate flow, pressure and direction to the actuators.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Power units are sized for the application: pressure (bar), flow (l\/min), duty cycle and fluid. TFS designs and builds custom power units and tests them before delivery \u2014 see <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/construction-of-hydroelectric-power-plants\/\">power unit construction<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/control-units-and-hydraulic-systems\/\">power unit catalog<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q5-motore\">How does a hydraulic motor work?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">A hydraulic motor is the reverse of a pump: it receives pressurised oil and converts it into mechanical rotation, i.e. <strong>torque<\/strong>. The oil flow determines the rotation speed; the pressure determines the torque delivered. It drives winches, wheels, drums, cranes and tracks.<\/p>\n\n\n<p class=\"wp-block-paragraph\">Types include: gear, vane, orbital (low speed, medium torque), <strong>axial piston<\/strong> (high speed\/pressure) and <strong>radial piston<\/strong> such as H\u00e4gglunds motors, capable of very high torque at low speed with direct drive. TFS overhauls multi-brand <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/hydraulic-motors\/\">hydraulic motors<\/a> and is a <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/partner\/kawasaki\/\">Kawasaki<\/a> partner; for radial-piston <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/hagglunds-motor-repair\/\">H\u00e4gglunds<\/a> motors it offers a dedicated overhaul with test-bench certification.<\/p>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"color:#022442\">Technical differences<\/h3>\n\n\n<h2 class=\"wp-block-heading\" id=\"q6-ingranaggi\">What is the difference between external and internal gear pumps?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">In an <strong>external gear<\/strong> pump two external toothed wheels mesh together and carry the oil along the periphery: simple, economical construction, suitable for medium-high pressures but noisier. In an <strong>internal gear<\/strong> pump an internal toothed wheel rotates inside a ring gear: quieter, compact and smoother, ideal at low speeds.<\/p>\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><\/th><th>External gear<\/th><th>Internal gear<\/th><\/tr><\/thead><tbody><tr><td>Noise<\/td><td>Higher<\/td><td>Lower<\/td><\/tr><tr><td>Pulsation<\/td><td>More marked<\/td><td>Reduced<\/td><\/tr><tr><td>Cost<\/td><td>Lower<\/td><td>Higher<\/td><\/tr><tr><td>Typical use<\/td><td>General, medium pressure<\/td><td>Low speed, precision<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p class=\"wp-block-paragraph\">See <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/gear-pumps\/\">gear pumps<\/a>. TFS handles their repair and overhaul.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q7-servovalvola\">What is the difference between a servo valve and a proportional valve?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Both continuously regulate flow or pressure from an electrical signal, but with different performance. The <strong>servo valve<\/strong> offers very high precision and dynamic response with internal feedback: ideal for fine position or force control. The <strong>proportional valve<\/strong> offers good control, greater robustness and lower cost: ideal for most industrial applications.<\/p>\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><\/th><th>Servo valve<\/th><th>Proportional valve<\/th><\/tr><\/thead><tbody><tr><td>Precision\/dynamics<\/td><td>Very high<\/td><td>Good<\/td><\/tr><tr><td>Feedback<\/td><td>Yes (internal)<\/td><td>Optional<\/td><\/tr><tr><td>Contamination sensitivity<\/td><td>High<\/td><td>Medium<\/td><\/tr><tr><td>Cost<\/td><td>High<\/td><td>Low<\/td><\/tr><tr><td>Typical brands<\/td><td>Moog, Atos<\/td><td>Bosch Rexroth, Atos<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<p class=\"wp-block-paragraph\">TFS repairs and tests <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/servo-valves-and-proportional-valves\/\">servo and proportional valves<\/a> on a test bench, partner of <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/partner\/moog\/\">Moog<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/partner\/atos\/\">Atos<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q8-pistoni\">What is the difference between axial and radial piston machines?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">In <strong>axial piston<\/strong> machines the pistons are parallel to the axis of rotation and act on a swash plate: compact, suitable for high pressures and high speeds, often with variable displacement (e.g. Bosch Rexroth A4VG, Kawasaki K3V). In <strong>radial piston<\/strong> machines the pistons are arranged radially, perpendicular to the axis: they deliver very high torque at low speed (e.g. H\u00e4gglunds motors).<\/p>\n\n\n<p class=\"wp-block-paragraph\">In short: axial = compactness, high speed, high pressure; radial = maximum torque at low speed, ideal for heavy direct drives. TFS overhauls both types \u2014 <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/piston-pumps\/\">piston pumps<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/hydraulic-motors\/\">motors<\/a>.<\/p>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"color:#022442\">Repair and maintenance<\/h3>\n\n\n<h2 class=\"wp-block-heading\" id=\"q9-riparare-sostituire\">How do you know if a hydraulic pump should be repaired or replaced?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The warning signs of a hydraulic pump are: loss of pressure or flow, abnormal noise, overheating, vibration and oil leaks. In most cases <strong>overhaul is preferable to replacement<\/strong>: it costs less, uses original spare parts and, with test-bench certification, restores factory performance. Only severe structural damage makes replacement preferable.<\/p>\n\n\n<p class=\"wp-block-paragraph\">A reliable diagnosis is made by disassembling the component and testing it on a <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/pump-and-motor-repair\/\">test bench<\/a>: actual flow, pressure and efficiency are measured. TFS provides an overhaul quote after diagnosis, with no obligation.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q10-banco-prova\">What is a certified test bench and why does it matter?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">A test bench is the equipment that tests hydraulic pumps and motors by reproducing real working conditions \u2014 pressure, flow, torque and temperature \u2014 and certifies their performance with a measurement report. It is what distinguishes a professional overhaul from a simple repair: it guarantees that the overhauled component performs like new.<\/p>\n\n\n<p class=\"wp-block-paragraph\">TFS operates a <strong>Bosch Rexroth certified test bench<\/strong> and is a <strong>Bosch Rexroth Certified Excellence Partner<\/strong> in the three areas of Distribution, Solution and Service. Every overhauled pump or motor is delivered with a documented test. See <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/pump-and-motor-repair\/\">pump and motor repair<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/testing-and-certification\/\">testing and certification<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q11-manutenzione\">How often should a hydraulic system be serviced?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">The frequency depends on operating hours, environment and type of system, but some practical rules apply: continuous checking of level and leaks; <strong>oil and contamination analysis every 500-1000 hours<\/strong> (cleanliness class per ISO 4406); filter replacement at the scheduled intervals; checking of pressures and temperatures. Contaminated oil is the leading cause of failure.<\/p>\n\n\n<p class=\"wp-block-paragraph\"><strong>Scheduled maintenance<\/strong> reduces unexpected downtime and extends component life. TFS offers <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/scheduled-maintenance\/\">scheduled maintenance<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/on-site-support\/\">on-site support<\/a>, also for critical sectors such as <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/sectors\/hydroelectric\/\">hydroelectric<\/a> and <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/sectors\/oil-and-gas\/\">oil &amp; gas<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q12-scegliere-pompa\">How do you choose the right hydraulic pump for a system?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Choosing a hydraulic pump depends on four main parameters: required <strong>flow<\/strong> (l\/min), operating <strong>pressure<\/strong> (bar), <strong>fluid type<\/strong> and temperature, and <strong>fixed or variable displacement<\/strong> according to the duty cycle. Rotation speed, efficiency, noise and size must also be assessed. A wrong choice causes overheating, efficiency loss and premature wear.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For high-pressure, variable-displacement applications <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/piston-pumps\/\">piston pumps<\/a> are used; for general use, <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/catalog\/gear-pumps\/\">gear pumps<\/a>. TFS supports the customer in the choice and in <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/services\/design-of-hydraulic-systems\/\">system design<\/a>.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"q13-multimarca\">What does &laquo;multi-brand&raquo; overhaul mean?<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Multi-brand overhaul means the workshop can overhaul hydraulic pumps and motors of <strong>different brands<\/strong>, not just those it distributes. It requires cross-brand expertise, spare-part availability and a universal test bench. It is the advantage of an independent centre over brand-tied service.<\/p>\n\n\n<p class=\"wp-block-paragraph\">TFS overhauls Bosch Rexroth, Kawasaki, H\u00e4gglunds, Casappa, Parker, Danfoss, Moog, Atos, Hydac and many other components \u2014 see the 30 <a href=\"https:\/\/www.tfsoleodinamica.it\/en\/partner\/\">partners<\/a>. A single point of contact for the entire machine fleet, with certified testing on every part.<\/p>\n\n<style>.wp-block-kadence-advancedbtn.kb-btns1687_cta{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns1687_cta .kt-button{font-weight:normal;font-style:normal;}.kt-btns1687_cta .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button{color:#555555;border-color:#555555;}.wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns1687_cta .kt-btn-wrap-0 .kt-button:focus{background:#444444;}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kb-buttons-wrap tfs-tier2-cta-wrap kb-btns1687_cta\"><style>ul.menu .wp-block-kadence-advancedbtn .kb-btn1687_cta_btn.kb-button{width:initial;}.wp-block-kadence-advancedbtn .kb-btn1687_cta_btn.kb-button{color:#ffffff;background:#305473;border-top-left-radius:4px;border-top-right-radius:4px;border-bottom-right-radius:4px;border-bottom-left-radius:4px;margin-top:10px;}<\/style><span class=\"kb-button kt-button button kb-btn1687_cta_btn kt-btn-size-standard kt-btn-width-type-auto kb-btn-global-fill kt-btn-has-text-true kt-btn-has-svg-false wp-block-kadence-singlebtn\"><span class=\"kt-btn-inner-text\">Have another question? Contact us<\/span><\/span><\/div>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<p class=\"wp-block-paragraph\" style=\"color:#305473;font-size:15px\"><strong>By Angelo Pagano<\/strong>, Owner and Technical Director of Tecno Fluid Service \u2014 over 25 years of experience in the repair and overhaul of hydraulic components, on a Bosch Rexroth certified test bench.<\/p>\n\n<\/div><\/div>\n\n<style>.kadence-column1687_col_sidebar > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column1687_col_sidebar > .kt-inside-inner-col,.kadence-column1687_col_sidebar > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column1687_col_sidebar > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column1687_col_sidebar > .kt-inside-inner-col{flex-direction:column;}.kadence-column1687_col_sidebar > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column1687_col_sidebar > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column1687_col_sidebar{position:relative;}@media all and (max-width: 1024px){.kadence-column1687_col_sidebar > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column1687_col_sidebar > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column1687_col_sidebar tfs-partner-sidebar\" id=\"tfs-partner-form\"><div class=\"kt-inside-inner-col\">\n\n<h4 class=\"wp-block-heading has-text-align-center\" style=\"color:#305473;\">Contatta il nostro referente<\/h4>\n\n\n<div class=\"wp-block-image tfs-referente-photo\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"491\" height=\"491\" src=\"https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/Angelo-Pagano-4_1.png\" alt=\"Angelo Pagano - Titolare TFS Oleodinamica\" class=\"wp-image-268\" style=\"width:80px\" srcset=\"https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/Angelo-Pagano-4_1.png 491w, https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/Angelo-Pagano-4_1-300x300.png 300w, https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/Angelo-Pagano-4_1-150x150.png 150w\" sizes=\"auto, (max-width: 491px) 100vw, 491px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong>Angelo Pagano<\/strong><br>Titolare e Direttore Tecnico<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">&#9742; <a href=\"tel:+390828301272\">+39 0828 301 272<\/a><br>Assistenza clienti<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">&#128241; <a href=\"tel:+393356533420\">+39 335 653 3420<\/a><br>Supporto tecnico<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading has-text-align-center\">Richiedi un preventivo<\/h4>\n\n\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f266-o1\" lang=\"it-IT\" dir=\"ltr\" data-wpcf7-id=\"266\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/en\/wp-json\/wp\/v2\/pages\/1687#wpcf7-f266-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Modulo di contatto\" enctype=\"multipart\/form-data\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"266\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"it_IT\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f266-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"tfs-cf7-sidebar\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"nome\" autocomplete=\"name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Full name *\" value=\"\" type=\"text\" name=\"nome\" autocomplete=\"name\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"email\" autocomplete=\"email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Email *\" value=\"\" type=\"email\" name=\"email\" autocomplete=\"email\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"telefono\" autocomplete=\"tel\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-text wpcf7-validates-as-tel\" aria-invalid=\"false\" placeholder=\"Phone\" value=\"\" type=\"tel\" name=\"telefono\" autocomplete=\"tel\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"messaggio\" autocomplete=\"off\"><textarea cols=\"40\" rows=\"3\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea\" aria-invalid=\"false\" placeholder=\"Message\" name=\"messaggio\" autocomplete=\"off\"><\/textarea><\/span><br \/>\n<label class=\"tfs-cf7-file-label\">Attach a photo or document (jpg, png, pdf, doc \u2013 max 10MB)<\/label><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"allegato\"><input size=\"40\" class=\"wpcf7-form-control wpcf7-file\" accept=\".jpg,.jpeg,.png,.pdf,.doc,.docx\" aria-invalid=\"false\" type=\"file\" name=\"allegato\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"privacy\"><span class=\"wpcf7-form-control wpcf7-acceptance\"><span class=\"wpcf7-list-item\"><label><input type=\"checkbox\" name=\"privacy\" value=\"1\" aria-invalid=\"false\" \/><span class=\"wpcf7-list-item-label\">I have read the <a href=\"\/en\/privacy-policy\/\" target=\"_blank\" rel=\"noopener\">privacy notice<\/a> and understand that the data entered will be processed by Tfs Tecno Fluid Service s.r.l. to reply to my request. Providing the necessary data is required in order to receive a reply.<\/span><\/label><\/span><\/span><\/span><br \/>\n<input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Send request \u2192\" \/>\n\t<\/p>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\" style=\"color:#305473;font-weight:600;\">Banco prova certificato<br>Bosch Rexroth dal 1997<\/p>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Centro di Eccellenza<br><a href=\"https:\/\/www.tfsoleodinamica.it\/en\/partner\/bosch-rexroth\/\">Bosch Rexroth CE Partner &#8594;<\/a><\/p>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"647\" height=\"152\" src=\"https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/00-TFS_Kawasaki_Rexroth.png\" alt=\"TFS Certified Bosch Rexroth + Kawasaki Authorized Service Centre\" class=\"wp-image-290\" style=\"width:140px\" srcset=\"https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/00-TFS_Kawasaki_Rexroth.png 647w, https:\/\/www.tfsoleodinamica.it\/wp-content\/uploads\/2026\/04\/00-TFS_Kawasaki_Rexroth-300x70.png 300w\" sizes=\"auto, (max-width: 647px) 100vw, 647px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\"><strong>CE Service Partner Bosch Rexroth<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\"><strong>Authorized Service Centre Kawasaki<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">ISO 9001 Bureau Veritas dal 1999<\/p>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">EcoVadis Sustainability Scorecard<\/p>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">Openes Card<\/p>\n\n<\/div><\/div>\n\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Technical answers to the most searched questions about hydraulic pumps, motors, power units and components \u2014 from the technical team of Tecno Fluid Service, a hydraulics leader since 1997 and partner of Bosch Rexroth, H\u00e4gglunds and Kawasaki. Every answer comes from real test-bench and field experience, across Europe and the Mediterranean. Index of questions Definitions&#8230;<\/p>\n","protected":false},"author":0,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-1687","page","type-page","status-publish","hentry"],"acf":[],"taxonomy_info":[],"featured_image_src_large":false,"author_info":{"display_name":"","author_link":"https:\/\/www.tfsoleodinamica.it\/en\/author\/"},"comment_info":0,"_links":{"self":[{"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/pages\/1687","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/comments?post=1687"}],"version-history":[{"count":5,"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/pages\/1687\/revisions"}],"predecessor-version":[{"id":1723,"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/pages\/1687\/revisions\/1723"}],"wp:attachment":[{"href":"https:\/\/www.tfsoleodinamica.it\/en\/wp-json\/wp\/v2\/media?parent=1687"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}