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A4VG Rexroth Piston Pump

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A4VG Rexroth Piston Pump

High-pressure pump for applications in a closed circuit

A4VG rexroth piston pump size 28 to 180 (28/40/56/71/90/125/180/250)

Nominal pressure 400 bar

Maximum pressure 450 bar

Closed circuit

Characteristic

The A4VG piston pump is an integrated auxiliary pump designed for boosting and pilot oil supply. The A4VG smoothly changes flow direction as the swash plate moves through the intermediate position.

Rexroth piston pumps are equipped with a high-pressure safety valve with integrated pressure boost function and an adjustable pressure cut-off function as standard.

Also features a boost relief valve and through-drive for mounting more pumps up to the same nominal size. The A4VG piston pump offers a variety of controls and is designed with a swash plate.

Parameter

Size NG 28 40 56 71 90 125 180 250
Displacement

variable pump

Vg max cm3 28 40 56 71 90 125 180 250
boost pump (at p = 20 bar) Vg Sp cm3 6.1 8.6 11.6 19.6 19.6 28.3 39.8 52.5
Speed1) maximum at Vg max nnom rpm 4250 4000 3600 3300 3050 2850 2500 2400
limited maximum2) nmax rpm 4500 4200 3900 3600 3300 3250 2900 2600
intermittent maximum3) nmax rpm 5000 5000 4500 4100 3800 3450 3000 2700
minimum nmin rpm 500 500 500 500 500 500 500 500
Flow at nnom and Vg max qv L/min 119 160 202 234 275 356 450 600
Power4)

at nnom, Vg max and Dp = 400 bar

P kW 79 107 134 156 183 238 300 400
Torque4)

at Vg max and

Dp = 400 bar T Nm 178 255 357 452 573 796 1146 1592
Dp = 100 bar T Nm 45 64 89 113 143 199 286 398
Rotary stiffness drive shaft S c kNm/rad 31.4 69 80.8 98.8 158.1 218.3 244.5 354.5
T c kNm/rad โ€“ โ€“ 95 120.9 โ€“ 252.1 318.4 534.3
A c kNm/rad โ€“ 79.6 95.8 142.4 176.8 256.5 โ€“ โ€“
Z c kNm/rad 32.8 67.5 78.8 122.8 137 223.7 319.6 624.2
U c kNm/rad โ€“ 50.8 โ€“ โ€“ 107.6 โ€“ โ€“ โ€“
Moment of inertia for rotary group JGR kgm2 0.0022 0.0038 0.0066 0.0097 0.0149 0.0232 0.0444 0.0983
Maximum angular acceleration5) a rad/s2 38000 30000 24000 21000 18000 14000 11000 6700
Case volume V L 0.9 1.1 1.5 1.3 1.5 2.1 3.1 6.3
Mass approx. (without through drive) m kg 29 31 38 50 60 80 101 156
Center of gravity6) X mm < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5
Y mm 24 20 20 15 20 30 33 30
Z mm 105 112 106 135 145 160 180 203

Dimension

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A4VG Rexroth Piston Pump

High-pressure pump for applications in a closed circuit A4VG rexroth piston pump size 28 to 180 (28/40/56/71/90/125/180/250) Nominal pressure 400 bar Maximum pressure 450 bar Closed circuit

Characteristic

The A4VG piston pump is an integrated auxiliary pump designed for boosting and pilot oil supply. The A4VG smoothly changes flow direction as the swash plate moves through the intermediate position.

Rexroth piston pumps are equipped with a high-pressure safety valve with integrated pressure boost function and an adjustable pressure cut-off function as standard.

Also features a boost relief valve and through-drive for mounting more pumps up to the same nominal size. The A4VG piston pump offers a variety of controls and is designed with a swash plate.

Parameter

Size NG 28 40 56 71 90 125 180 250
Displacement

variable pump

Vg max cm3 28 40 56 71 90 125 180 250
boost pump (at p = 20 bar) Vg Sp cm3 6.1 8.6 11.6 19.6 19.6 28.3 39.8 52.5
Speed1) maximum at Vg max nnom rpm 4250 4000 3600 3300 3050 2850 2500 2400
limited maximum2) nmax rpm 4500 4200 3900 3600 3300 3250 2900 2600
intermittent maximum3) nmax rpm 5000 5000 4500 4100 3800 3450 3000 2700
minimum nmin rpm 500 500 500 500 500 500 500 500
Flow at nnom and Vg max qv L/min 119 160 202 234 275 356 450 600
Power4)

at nnom, Vg max and Dp = 400 bar

P kW 79 107 134 156 183 238 300 400
Torque4)

at Vg max and

Dp = 400 bar T Nm 178 255 357 452 573 796 1146 1592
Dp = 100 bar T Nm 45 64 89 113 143 199 286 398
Rotary stiffness drive shaft S c kNm/rad 31.4 69 80.8 98.8 158.1 218.3 244.5 354.5
T c kNm/rad โ€“ โ€“ 95 120.9 โ€“ 252.1 318.4 534.3
A c kNm/rad โ€“ 79.6 95.8 142.4 176.8 256.5 โ€“ โ€“
Z c kNm/rad 32.8 67.5 78.8 122.8 137 223.7 319.6 624.2
U c kNm/rad โ€“ 50.8 โ€“ โ€“ 107.6 โ€“ โ€“ โ€“
Moment of inertia for rotary group JGR kgm2 0.0022 0.0038 0.0066 0.0097 0.0149 0.0232 0.0444 0.0983
Maximum angular acceleration5) a rad/s2 38000 30000 24000 21000 18000 14000 11000 6700
Case volume V L 0.9 1.1 1.5 1.3 1.5 2.1 3.1 6.3
Mass approx. (without through drive) m kg 29 31 38 50 60 80 101 156
Center of gravity6) X mm < 5 < 5 < 5 < 5 < 5 < 5 < 5 < 5
Y mm 24 20 20 15 20 30 33 30
Z mm 105 112 106 135 145 160 180 203

Dimension

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A4VG28EP1/X+A4FM28/X-ECCOM1,5-MW1 A4VG71DA1D3R/32R-NZF02F001L A4VG125EP2D2/32R-NZF02F011L
A4VG40EP1/X+A4FM40/X-ECCOM1,5MW3 A4VG90EP2DM1/32L-NSF02F001P-S A4VG56EZ1D1/32L-NZC02F003S
A4VG28EP1/X+A4FM28/X-ECCOM1,5 A4VG71EP2DM2/32R-NZF02F023L-K A4VG125EP2D2/32R-NZF02F011L-K
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