Rexroth A8VO pump

Rexroth A8VO pump

Product introduction:

Series: A8VO
Open circuits
Size 55  to 200
Series 61/63
Product Category: Hydraulic piston pump / Rexroth
  • Uchida Brueninghaus Hydromatik Rexroth A8VO pump

     

    Hydraulic piston double pump A8VO55, A8VO80, A8VO107, A8VO140, A8VO200

    Description

     

    Open circuit

    Series 61 / 63

    Control devices: LAOH2, LAOK, LAOKS, LAOKH1, LAOKH2, LAOKH3, LA1H2, LA1S, LA1K, LA1KS, EP, LA1KH1, etc.

    Nominal pressure 350 bars. Peak pressure 400 bars

     

    – Variable double pump A8VO with two axial tapered piston rotary groups of bent-axis design for hydrostatic drives in open circuits

    – The flow is proportional to the input speed and to the displacement, and is infinitely variable from qV max to qV min = 0

    – The pump is suitable for direct mounting on the flywheel case in diesel engines

    – One common suction port for auxiliary pump and both circuits

    – A wide range of control instruments is available for different control and regulating functions

    – Individual power controller

    – Integrated auxiliary pump with pressure-relief valve, optionally with additional pressure-reduction valve

    – Power take-off for mounting axial piston and gear pumps

    – Excellent power to weight ratio

    – Long service life

    Technical Data 

    Table of values (theoretical values, without efficiency and tolerances; values rounded)

    Size

    A8VO55

    A8VO80

    A8VO107

    A8VO140

    A8VO200

    Displacement

    Vg max

    cm3

    2 x 54.8

    2 x 80

    2 x 107

    2 x 140

    2 x 200

    Vg min

    cm3

    0

    0

    0

    0

    0

    Gear ratio i = ninput/nrotary groups

    1

    1

    1

    1

    1

    Input speed  at Vg max 1)

    nmax 1

    rpm

    2500

    2240

    2150

    2100

    1950

                 at Vg ≤ Vg max2)

    nmax

    rpm

    3000

    2750

    2450

    2450

    2250

    Flow at nmax and Vg max

    qv max

    L/min

    2 x 137

    2 x 179

    2 x 230

    2 x 294

    2 x 390

    Power at nmax, Vgmax and Dp=350 bar

    Pmax

    kW

    160

    209

    268

    294  3)

    325   3)

    Input torque

    Tmax

    Nm

    611

    891

    1192

    1337  3)

    1592  3)

    Rotary stiffness (single rotary group)5)

    cTW

    Nm/rad

    11213

    17985

    25565

    41408

    39505

    cTW

    Nm/rad

    41442

    67666

    89381

    146677

    156876

    Moment of inertia for rotary group

    JTW

    kgm2

    0.0161

    0.0209

    0.0345

    0.0581

    0.0849

    without power take-off (PTO)

    JTW

    kgm2

    0.0126

    0.0173

    0.0288

    0.05

    0.075

    Angular acceleration (single rotary group)5)

    a

    rad/s2

    25800

    21800

    17100

    7500

    11000

    Mass approx.

    m

    kg

    82

    90

    116

    146

    180

    Variation: with integrated auxiliary pump, F00, F.. 4)

    Displacement with integrated auxiliary pump

    Vg max

    cm3

    8.6

    8.6

    8.6 (10.7)

    10.7

    11 (19)4)

    Effective displacement

    Vg max/eff

    cm3

    9.7

    9.7

    11 (13.7)

    12.7

    13.6 (23.6)

    Gear ratio i = ninput/naux.  pump

    0.887

    0.887

    0.78

    0.843

    0.804

    Variation: with power take-offs, K.., F.

    Max. torque at PTO

    Tmax

    Nm

    250

    350

    380

    450

    650

    Gear ratio i = ninput/nPTO

    1

    1

    1

    1

    0.804

    1) The values shown are valid for absolute pressure (pabs) of 1 bar at suction port S and for operation with mineral fluids with a specific mass of 0.88kg/L.

    2) The values shown are valid for Vg ≤ Vg max or for an increase in the inlet pressure pabs at the suction port S.

    3) Observe max. Permissible torque!

     

    4) Available on request

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