{"id":257168,"date":"2017-10-31T09:43:09","date_gmt":"2017-10-31T08:43:09","guid":{"rendered":"https:\/\/bezares.web45.com.es\/choose-hydraulic-pump\/"},"modified":"2017-10-31T09:43:09","modified_gmt":"2017-10-31T08:43:09","slug":"choose-hydraulic-pump","status":"publish","type":"post","link":"https:\/\/beta.bezares.com\/fr\/choose-hydraulic-pump\/","title":{"rendered":"What is and how to choose a Hydraulic pump"},"content":{"rendered":"
<\/div>\n
\n

A hydrostatic transmission pump, commonly called a hydraulic pump, is a positive displacement machine and its mission is to transform mechanical energy into hydraulic, based on the Pascal Principle. This Principle is based on the fact that, when exerting a pressure or push on a fluid like oil (which is considered incompressible), it is transmitted equally in all directions.<\/span><\/p>\n

Taking advantage of this principle, hydraulic actuators, depending on the pressure and displacement surface (eg surface of a piston), will transmit the force necessary to move the application.<\/span><\/p>\n<\/div>\n

\n

Turning the pump drive shaft causes the internal components responsible for the suction and delivery of the oil to be moved, by varying the volume at each turn, called displacement, with a minimum loss and regardless of the pressure of the system.<\/span><\/p>\n

 <\/p>\n<\/div>\n

\n

Put more simply, the pump delivers an oil flow to the system and through a distributor with pressure limiting, the direction, the effort and the speed with which the actuator of the application is moved, which is usually a cylinder (tipper, crane) or a hydraulic motor (winch, winch, wheel, head or other).<\/span><\/p>\n

They are usually found in mobile applications such as industrial vehicles, civil works or maintenance, as well as industrial applications such as elevators, presses, machine tools and process machinery.<\/span><\/p>\n

The assembly and actuation of the pump is direct through a power take-off coupled to the vehicle’s gearbox, although an indirect hydrostatic transmission can also be mounted, or by coupling and electric motor (AC \/ DC) or combustion.<\/span><\/p>\n

The most frequent types of pumps are manufactured Bezares, s.a. (Spain), such as piston pumps, pallets and gears, being one of the few factories in the world that produces the 3 types and also manufactures power sockets and distributors.<\/span>\u00a0<\/span><\/p>\n<\/div>\n

Hydraulic Pump Selection<\/span><\/div>\n
<\/div>\n
In order to properly dimension the application in the project, as well as to avoid damage to the equipment, its necessary to find out three fundamental data:<\/span>
\n
\n<\/span>
\nDisplacement of the pump: Knowing the displacement will let you know the size of pump needed.<\/span><\/div>\n
\u00a0<\/span><\/div>\n
D = Q x 1000 \/ n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/div>\n
<\/div>\n
D = Displacement (c.c.)<\/span>
\nQ = Flow required by application (l \/ min)<\/span>
\nn = RPM output (rpm motor x PTO internal ratio)<\/span>
\nExample: if we have a tap that rotates at 1000rpm and we need the flow rate to be 60l \/ min, we would need a 60c.c.<\/span>
\nOn the contrary, if we have a pump of 60c.c. and an electric motor rotating at 1,500rpm, the pump would provide a theoretical flow rate of 90l \/ min.<\/span><\/div>\n
<\/div>\n
\u00b7
\n<\/span><\/span>Required power<\/b> in the power take-off or in the motor for the application:<\/span><\/span><\/p>\n
\u00a0<\/span><\/div>\n<\/div>\n
\u00a0<\/span><\/div>\n
N = Q x p \/ 450<\/b> x<\/span><\/div>\n
<\/div>\n
N = Power (HP)<\/span><\/div>\n
Q = Flow required by the application (L \/ min)<\/span>
\np = Pressure (bar)<\/span>
\n\u03b7<\/span>= yield (eg If it is 95%, the value will be<\/span>
\nExample: if we need about 60l \/ min and the application requests a pressure of 250bar, the power we would consume would be about 35 c.v. with a 95% performance piston pump.<\/span>
\nIn the case of electric motor mounting, the operating time must be kept in mind.<\/span>
\nIn turn, if we have a motor of 35 cv, we can clear the value of the pressure, to know the maximum value of work in bar.<\/span><\/div>\n
<\/div>\n
<\/div>\n
\u00b7
\n<\/span><\/span>Required torque <\/b>in the PTO for the application:<\/span><\/span>
\n
\n<\/span><\/span><\/div>\n
T = p x D \/ 63 x <\/span><\/b>\u00a0<\/b>\u00a0<\/span><\/span><\/div>\n
<\/div>\n
D = Displacement (c.c.)<\/span>
\nQ = Flow required by the application (L \/ min)<\/span>
\nn = Revolutions at the inlet of the PTO<\/span>
\nExample: if we have a pump of 60c.c. and the application requests a pressure of 250bar, the torque to be transmitted to the shaft would be 250Nm with a gear pump with a 95% efficiency.<\/span><\/div>\n
<\/div>\n
\n

Finally, recall the Pascal Principle of Pressure:<\/span><\/p>\n

<\/div>\n<\/div>\n
\u00a0<\/span>
\n
\n<\/span><\/div>\n
\u00a0\u00a0<\/span>, or of more practical application:<\/span>\u00a0 \u00a0\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
\n

And if we know the working pressure and the useful surface of the actuator:<\/span><\/p>\n<\/div>\n

<\/span><\/span><\/div>\n
F (kgf) = p (bar) X A (cm\u00b2)<\/span><\/div>\n
\u00a0<\/span><\/div>\n
If we follow the example of the figure with its units in mm, the piston pump 1 of 1,5cm in diameter has A\u2248 1,8. Applying a pressure of 100bar (100kg \/), we would obtain F1\u2248180kg, then the piston 2 of 5cm in diameter and 19.6 would exercise an F2 \u2248 1960 kg, which means about 19,200 N of thrust, capable of raising a vehicle.<\/span>
\n
\n<\/span><\/div>\n
Units Conversion: 1 bar\u00a0<\/span>\u2248 14 psi, 1l = 1000c.c. and 1 GAL\u00a0<\/span>\u2248 3,78l<\/span><\/div>\n
\u00a0<\/span><\/div>\n
Once these data are calculated, they are compared to the maximum values \u200b\u200bof the power take-off or the motor to which the pump is coupled. If the calculated data exceeds that of the drive, a smaller pump or a power take-off or the higher-performance electric motor must be fitted.<\/span>
\nIt is very important to keep in mind that the required oil volume should be approximately 3 times the required flow rate and control the variables such as the operating time and the oil temperature.<\/span><\/div>\n
<\/div>\n
Types of\u00a0<\/span>Bezares’\u00a0<\/span>Hydraulic Pumps\u00a0<\/span><\/strong><\/div>\n
<\/div>\n
Bezares has a wide range of hydraulic pumps to adapt to the requirements of each application, both in the field of mobile hydraulics and industrial hydraulics.<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
Gear Pumps<\/span><\/div>\n
\n
<\/div>\n

\u00a0<\/span><\/span><\/p>\n<\/div>\n

\u2022<\/span>\u00a0 \u00a0<\/span>BEA \/ BEAU \/ BEASF<\/b> \u2013 Flow rates: 11 and 17 cc \/ rev. P1 = 250 bar
\nBidirectional, aluminum body, low noise, with internal drainag
\nTypes of assembly: ISO \/ UNI \/ SAE A.Types of assembly: ISO \/ UNI \/ SAE A.<\/span>
\n
\n<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>BEM \/ BEU \/ BEMRA<\/b> \u2013 Flow rates: 23 \u00f7 46 cc \/ rev. P1 200 \u00f7 250 bar
\nBidirectional, cast steel body, with internal drainage
\nTypes of assembly: ISO \/ UNI \/ SAE B.
\nSide and rear ports with BSP, SAE or NPT threads<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>BEL \/ BELS \/ BELRA \/ BELRB<\/b> \u2013 Flow rates: 50 \u00f7 115 cc \/ rev. P1 200 \u00f7 290 bar
\nFlow rates: 50 \u00f7 115 cc \/ rev. P1 200 \u00f7 290 bar<\/span>Mounting types: ISO \/ SAE B \/ SAE BB.<\/span><\/span>Side and rear ports with BSP, SAE or NPT threads<\/span><\/span>REINFORCED BELS VERSION WITH DOUBLE SHAFT SUPPORT BEARING.<\/span><\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>BEXL \/ BEXLNS \/ BEXLRB<\/b> \u2013 Flow rates: 85 \u00f7 150 cc \/ rev. P1 210 \u00f7 250 bar<\/span>Bidirectional, cast steel body, with internal drainage<\/span>Mounting types: ISO \/ SAE BB.<\/span>Side and rear ports with BSP or SAE threads<\/span>LIGHT BEXLNS VERSION, WITHOUT BEARING SUPPORT BEARING.<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
<\/div>\n
\n

Piston Pumps<\/span><\/span><\/p>\n

<\/div>\n


\n<\/span><\/span>
\n
\n<\/span><\/span><\/p>\n<\/div>\n

\u00a0<\/span><\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>BZ \/ BZT<\/b> \u2013\u00a0<\/span>Flow rates: 12 \u00f7 101 cc \/ rev. P1 230 \u00f7 300 bar<\/span><\/span>Bidirectional. Type of construction: pistons in line<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span>DOUBLE FLOW BZT VERSION FOR TWO INDEPENDENT CIRCUITS.<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>FR \/ FRB \/ FRBB<\/b> \u2013\u00a0<\/span>\u00a0Flow rates: 20 \u00f7 110 cc \/ rev. P1 = 350 bar<\/span><\/span>Unidirectional. Type of construction: bent-axis pistons<\/span>Mounting types: ISO \/ SAE B \/ SAE BB<\/span>Ports with BSP or SAE threads<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>MR \/ MRAE<\/b> \u2013\u00a0<\/span>\u00a0Flow rates: 20 \u00f7 110 cc \/ rev. P1 = 350 bar<\/span><\/span>Unidirectional. Type of construction: bent-axis pistons<\/span>Mounting types: ISO \/ SAE B \/ SAE BB<\/span>Ports with BSP or SAE threads<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>F1\u00a0<\/b>\u2013\u00a0<\/span>Flow rates: 25 \u00f7 101 cc \/ rev. P1 = 350 bar<\/span><\/span>Unidirectional. Type of construction: bent-axis pistons<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>T1\u00a0<\/b>\u2013\u00a0<\/span>Flow rates: 25 \u00f7 101 cc \/ rev. P1 = 350 bar<\/span><\/span>Unidirectional. Type of construction: bent-axis pistons<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>F2\u00a0<\/b>\u2013\u00a0<\/span>Double flow rate: 42\/42 \u00f7 70\/70 cc \/ rev. P1 300 \u00f7 350 bar<\/span><\/span>Unidirectional. Type of construction: bent-axis pistons<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span><\/div>\n
<\/div>\n

 <\/p>\n

\n

Variable flow pumps<\/span><\/span><\/p>\n

<\/div>\n<\/div>\n
\u00a0<\/span><\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>FRV\u00a0<\/b>\u2013\u00a0<\/span>Flow rate: 84 cc \/ rev. P1 350 bar<\/span><\/span>Unidirectional. Load sensing system (*)<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span>
\n
\n
\n<\/span><\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>VP1\u00a0<\/b>\u2013\u00a0<\/span>Flow rates: 45 \u00f7 130 cc \/ rev. P1 350 \u00f7 400 bar<\/span><\/span>Unidirectional. Load sensing system (*)<\/span>Types of assembly: ISO<\/span>Ports with BSP threads<\/span><\/div>\n

\n
\n<\/span>(*) The load sensing system accurately provides the required flow rate at every moment, drastically reducing energy consumption and generating heat, resulting in smoother and quieter system operation. All of this results in a reduced environmental impact.<\/span><\/div>\n
\u00a0<\/span><\/div>\n
\u00a0<\/span><\/div>\n
<\/div>\n
Vane Pumps<\/span><\/span>
\n
\n<\/span><\/span><\/p>\n
<\/div>\n

\u00a0<\/span><\/span><\/p>\n<\/div>\n


\n<\/span>Vane pumps are unidirectional units with great versatility and quiet operation, with easily replaceable cartridges. The configuration of the output ports can be customized according to the needs of the customer. Wide variety of flow and axes. The most used are:<\/span><\/div>\n
\u00a0<\/span><\/div>\n
<\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>Mobile hydraulics<\/span><\/div>\n

\n<\/span>VQ\u00a0<\/b>–\u00a0<\/span>Flow rates: 8 \u00f7 240 cc \/ rev. P1 125 \u00f7 175 bar<\/span><\/span>ALSO DOUBLE FLOW VERSIONS AND PASSING AXLE VERSIONS FOR DOUBLE OR TRIPLE PUMPS.<\/span><\/div>\n

\n<\/span>DT6GC<\/b> –\u00a0<\/span>Flow rates: 11 \u00f7 100 cc \/ rev. P1 240 bar<\/span><\/span>DOUBLE FLOW VERSIONS: DT6GCC<\/span><\/div>\n
\u00a0<\/span><\/div>\n
<\/div>\n
\u2022<\/span>\u00a0 \u00a0<\/span>Industrial hydraulics<\/span><\/div>\n

\n<\/span>VS\u00a0<\/b>–\u00a0<\/span>low rates: 8 \u00f7 240 cc \/ rev. P1 125 \u00f7 175 bar<\/span><\/span>ALSO DOUBLE FLOW VERSIONS AND PASSING AXLE VERSIONS FOR DOUBLE OR TRIPLE PUMPS.<\/span><\/div>\n

\n<\/span>DT6C<\/b> –\u00a0<\/span>Flow rates: 11 \u00f7 100 cc \/ rev. P1 160 \u00f7 240 bar<\/span><\/span>DOUBLE FLOW VERSIONS: DT6CC<\/span><\/div>\n

\n<\/span>DT6D<\/b> –\u00a0<\/span>\u00a0Flow rates: 48 \u00f7 190 cc \/ rev. P1 80 \u00f7 210 bar<\/span><\/span>DOUBLE FLOW VERSIONS: DT6DC<\/span>TRIPLE FLOW VERSION: DT6DCC<\/span><\/div>\n

\n<\/span>DT6E <\/b>–\u00a0<\/span>Flow rates: 132 \u00f7 270 cc \/ rev. P1 75 \u00f7 210 bar<\/span><\/span>DOUBLE FLOW VERSIONS: DT6EC AND DT6ED<\/span>TRIPLE FLOW VERSION: DT6EDC<\/span>
\n
\n<\/span>
\nFor additional information, please contact our Commercial department<\/a><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"

A hydrostatic transmission pump, commonly called a hydraulic pump, is a positive displacement machine and its mission is to transform mechanical energy into hydraulic, based on the Pascal Principle. This Principle is based on the fact that, when exerting a pressure or push on a fluid like oil (which is considered incompressible), it is transmitted […]<\/p>\n","protected":false},"author":1,"featured_media":248931,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_breakdance_hide_in_design_set":false,"_breakdance_tags":"","footnotes":""},"categories":[3848],"tags":[],"class_list":["post-257168","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-english-news"],"yoast_head":"\nWhat is and how to choose a Hydraulic pump - Bezares<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is and how to choose a Hydraulic pump - Bezares\" \/>\n<meta property=\"og:description\" content=\"A hydrostatic transmission pump, commonly called a hydraulic pump, is a positive displacement machine and its mission is to transform mechanical energy into hydraulic, based on the Pascal Principle. 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