Variable Displacement Pump A4VG - Group VH A/S

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6/52 Bosch Rexroth AG | Mobile Hydraulics A4VG | RE 92 003/05.03Technical DataTable of values (theoretical values, without considering η mh and η v : values rounded)Size 28 40 56 71 90 125 180 250Displacementvariable pump V g max cm 3 28 40 56 71 90 125 180 250auxiliary pump (at p = 20 bar) V g H cm 3 6,1 8,6 11,6 19,6 19,6 28,3 39,8 52,5Speedmaximum V g max n max contin. rpm 4250 4000 3600 3300 3050 2850 2500 2400limited maximum 1 ) n max limited rpm 4500 4200 3900 3600 3300 3250 2900 2600intermittent maximum 2 ) n max interm. rpm 5000 5000 4500 4100 3800 3450 3000 2700minimum n min rpm 500 500 500 500 500 500 500 500Flowat n max contin. and V g max q v max L/min 119 160 202 234 275 356 450 600Power 3 )at n max contin. ∆p = 400 bar P max kW 79 107 134 156 183 237 300 400Torque 3 )at V g max ∆p = 400 bar T max Nm 178 255 356 451 572 795 1144 1590∆p = 100 bar T Nm 44,5 63,5 89 112,8 143 198,8 286 398Moment of inertia J kgm 2 0,0022 0,0038 0,0066 0,0097 0,0149 0,0232 0,0444 0,0983(about drive axis)Angular acceleration, max. rad/s 2 38000 30000 24000 21000 18000 14000 11000 6700Speed variation, max. rpm 70 62 55 50 47 42 32 30Rotary stiffness shaft end S Nm/rad 31400 69000 80800 98800 158100 218300 244500 354500shaft end T Nm/rad – – 95000 120900 – 252100 318400 534300shaft end A Nm/rad – 79600 95800 142400 176800 256500 – –shaft end Z Nm/rad 32800 67500 78800 122800 137000 223700 319600 624200shaft end U Nm/rad – 50800 – – 107600 – – –Filling capacity of housing L 0,9 1,1 1,5 1,3 1,5 2,1 3,1 6,3Weight approx. m kg 29 31 38 50 60 80 101 156(without through drive)1 ) Limited maximum speed: – at half corner power (e.g. at V g max and p N /2)2 ) Intermittent maximum speed: – at high idling speed– at engine overspeed: ∆p = 70...150 bar and V g max– with reversing pressure peaks: ∆p < 300 bar and t < 5 sec.3 ) without auxiliary pumpCalculation of sizeOutput flow q vV g • n • η v=in L/min V g = displacement per revolution in cm 31000∆p= differential pressure in barPower P2 π • T • n q v • ∆pη mh = mechanical-hydraulic efficiency= = in kW60 000 600 • ηη t = overall efficiencytTorque TV g • ∆pn = speed in rpm= in Nm20 • π • η mhη v = volumetric efficiency
RE 92 003/05.03 | A4VG Mobile Hydraulics | Bosch Rexroth AG 7/52Technical DataPermissible axial and radial loading on drive shaftSize 28 40 56 71 90 125 180 250Radial load, max. F q maxN 2500 3600 5000 6300 8000 11000 16000 22000at distance (from shaft collar) a mm 17,5 17,5 17,5 20 20 22,5 25 29F q F q maxN 2000 2891 4046 4950 6334 8594 12375 16809a,b,cb mm 30 30 30 35 35 40 45 50F q maxN 1700 2416 3398 4077 5242 7051 10150 13600c mm 42,5 42,5 42,5 50 50 57,5 60 71Axial load, max. - – F ax maxN 1557 2120 2910 4242 4330 5743 7053 4150F ax+ + F ax maxN 417 880 1490 2758 2670 3857 4947 4150Permissible input and through drive rotation torquesSize 28 40 56 71 90 125 180 250Torque T max Nm 178 254 356 451 572 795 1144 1590(when V g max and ∆p = 400 bar 1 ))Input torque, max. 2 )at shaft end Z T E perm. Nm 352 522 522 912 912 1460 3140 4350DIN 5480 W25 W30 W30 W35 W35 W40 W50 W55at shaft end A T E perm. Nm — 912 912 1460 2190 2190 — —DIN 5480 W35 W35 W40 W45 W45at shaft end S T E perm. Nm 314 602 602 602 1640 1640 1640 1640SAE J744 (ANSI B92.1a-1976) 1in 1 1/4in 1 1/4in 1 1/4in 1 3/4in 1 3/4in 1 3/4in 1 3/4inat shaft end T T E perm. Nm — — 970 970 — 2670 4070 4070SAE J744 (ANSI B92.1a-1976) 1 3/8in 1 3/8in 2in 2 1/4in 2 1/4inat shaft end U 3 ) T E perm. Nm — 314 — — 602 — — —SAE J744 (ANSI B92.1a-1976) 1in 1 1/4inThrough drive rotation torque, max. 4 ) T D perm. Nm 231 314 521 660 822 1110 1760 22301 ) efficiency not considered) drive shaft without side load3 ) shaft „U“ is only permissible as the shaft end in the 2nd pump of a combination pump of the same size4 ) note max. input torque for shaft S!Torque distributionT 1 T 2T E1. Pumpe1st pump2. Pumpe2nd pumpT D
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Variable Displacement Pump A4VG - Group VH A/S

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