Hydromatik Rexroth A4FO pump
Hydraulic axial pump A4FO40, A4FO71, A4FO125, A4FO250, A4FO500
Open and closed loop circuits
Series 1, Series 3
Nominal pressure up to 350 bars, Peak pressure up to 400 bars
The A4FO fixed displacement pump in axial piston swash plate design for hydrostatic drives in an open circuit
– For use in mobile and stationary applications
– Flow is proportional to the drive speed and displacement.
– High power density
– High total efficiency
– Optimized dimensions for special installation situations
– Excellent suction characteristics
– Low noise level
– Long service life
– Economical design
– Through drive for combining additional pumps
Table of values (theoretical values, without efficiency and tolerances; values rounded)
|Power||Δ p = 350 bar||P||kW||–||91||131||219||385|
|Δ p = 400 bar||P||kW||73||–||–||–||–|
|Torque||Δ p = 350 bar||T||Nm||–||395||696||1391||2783|
|Δ p = 400 bar||T||Nm||254||–||–||–||–|
To review the application of A4FO pumps with the selected hydraulic fluid, detailed fluid compatibility and application data can be found in data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids) and RE 90223 (fire resistant fluids, HF). When using HF- or environmentally acceptable hydraulic fluids possible limitations for the technical data have to be taken into consideration. If necessary please consult our technical department (please indicate type of the hydraulic fluid used for your application on the order sheet).
Notes on the selection of the hydraulic fluid
In order to select the correct fluid, it is necessary to know the operating temperature in the tank (open circuit) in relation to the ambient temperature. The hydraulic fluid should be selected so that within the operating temperature range, the operating viscosity lies within the optimum range (νopt) (see shaded section of the selection diagram). We recommend that the highest possible viscosity range should be chosen in each case. Example: At an ambient temperature of X°C the operating temperature is 60°C. Within the operating viscosity range (νopt; shaded area), this corresponds to viscosity ranges VG 46 or VG 68. VG 68 should be selected.
Important: The leakage oil (case drain oil) temperature is influenced by pressure and pump speed and is always higher than the tank temperature.
The service life of the shaft seal is influenced by the speed of the axial piston unit and the leakage pressure in the housing (case pressure). Momentary (t < 0,1 s) pressure peaks of up to 10 bar are allowed. The service life of the shaft seal decreases with increasing frequency of pressure peaks and increasing mean differential pressure. The case pressure must be equal to or higher than the ambient pressure.
|Details model of Rexroth A4FO pump|
|R902405596 A A4FO250/30R PZB25N00||R902419400 A A4FO500/30L-PPH25N00|
|R902407892 A A4FO250/30R-PZB25KB2||R902420734 A A4FO125/30R-PPB25N00|
|R902409010 A A4FO250/30R-PPB25N00||R902422096 AE A4FO125/30R-PPB25N00|
|R902410708 A A4FO250/30L-PPB25N00||R902425392 A A4FO71/10R-VZB25N00|
|R902412100 AH A4FO250/30R-PPB25N00||R902425394 A A4FO71/10R-VPB25K33|
|R902413431 A A4FO250/30R-PPB25K35||R902425502 A A4FO500/30R-PZH25N00|
|R902415137 A A4FO500/30R-PPH25N00||R902425505 A A4FO500/30R-PZH25K43|
|R902416433 A A4FO125/30R-PZB25N00||R902426145 AH A4FO500/30R-PPH25N00|
|R902418008 A A4FO125/30L-PZB25N00||R902426161 A A4FO71/10R-PZB25N00|
|R902419199 A A4FO71/10R-PPB25N00||R902428880 A A4FO71/10L-PZB25N00|
|R902419396 A A4FO125/30L-PPB25N00||R902433984 AH A4FO500/30R-PZH25N00|
|R902433984 AH A4FO500/30R-PZH25N00||R902433990 A A4FO250/30R-PPB25K34|