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Bent Axis Variable Piston Pump A7VO
Bent Axis Variable Piston Pump A7VO
Bent Axis Variable Piston Pump A7VO
Bent Axis Variable Piston Pump A7VO
Bent Axis Variable Piston Pump A7VO
Bent Axis Variable Piston Pump A7VO
  1. Bent Axis Variable Piston Pump A7VO
  2. Bent Axis Variable Piston Pump A7VO
  3. Bent Axis Variable Piston Pump A7VO
  4. Bent Axis Variable Piston Pump A7VO
  5. Bent Axis Variable Piston Pump A7VO
  6. Bent Axis Variable Piston Pump A7VO

Bent Axis Variable Piston Pump A7VO

1.Variable pump with axial tapered piston rotary group of bent-axis design, for hydrostatic drives in open circuit

2.For use in mobile and stationary applications

3.Flow is proportional to the drive speed and displacement.

4.The flow can be steplessly changed by adjusting the bent axis.

5.Wide selection of control devices

6.Compact, robust pump with a long service life

Descripción detallada

This is a variable pump equipped with an axial tapered piston rotary group of bent-axis design, specifically developed for hydrostatic drives in open-circuit systems. It ensures efficient power transmission and stable oil flow output, which is essential for the reliable operation of open-circuit hydrostatic drive systems. The pump is suitable for both mobile and stationary applications, such as construction machinery, agricultural equipment, and industrial hydraulic stations, adapting to different working environments and load requirements. Its flow rate is proportional to the drive speed and displacement, meaning the output flow can be flexibly adjusted with the changes of these two parameters to match actual working demands. The flow can be steplessly changed by adjusting the bent axis, enabling precise and smooth flow regulation without obvious pressure fluctuations. It offers a wide selection of control devices, including manual, hydraulic, and electric controls, to meet diverse system control needs. With a compact and robust structure, the pump has strong resistance to wear and impact, ensuring a long service life and reducing maintenance frequency and costs.

Selección y solicitud de cotización

Esta serie de productos debe seleccionarse en función del circuito hidráulico aprobado. Confirme el caudal o desplazamiento requerido, la presión continua y de punta, la velocidad de accionamiento, el tipo de control, el fluido y la interfaz de instalación antes de la selección final.

Información que debe incluir en su RFQ

  • Desplazamiento o caudal requerido a la velocidad de operación
  • Presión del sistema continua y máxima
  • Velocidad de accionamiento, requisito de control y tipo de circuito
  • Brida de montaje, eje, puertos, requisitos de fluido y filtración

Recursos relacionados

Solicitar un presupuesto · Centro de descargas · OEM / ODM

Código de pedido

01 02 03 04 05 06 07 08 09 10 11 12 13
A7V ○ / 63 - V B 01

Unidad de pistones axiales

01 Bent-axis design, variable, nominal pressure 350 bar, maximum pressure 400 bar A7V

Modo de operación

02 Bomba de circuito abierto ○

Tamaño (NG)

03 Geometric displacement V2 (cm 3), see "Technical data" on page 7 28 55 80 107 160
For sizes 250, 355 and 500, see data sheet 92203

Dispositivo de control

28 55 80 107 160
04 Power controller without power override ● ● ● ● ● LR
con corte por presión ● ● ● ● ● LRD
con limitador de carrera control negativo Δp = 25 bar - ● ● ● ● LRH1
with pressure cut-o ffand stroke limiter control negativo Δp = 25 bar - ● ● ● ● LRDH1
with pressure cut-o ffand load sensing - ● ● ● ● LRDS
Power controller with hydraulically proportional power override

(only available for clockwise rotation and with port plate 02)
con sensor de carga - ● ● - - LA1S
with load sensing and hydraulically proportional LS-override - ● ● - - LA1S5
Regulador de presión ● ● ● ● ● Dr.
controlado a distancia ● ● ● ● ● DRG
con sensor de carga - ● ● ● ● DRS
Proportional control hydraulic Positive control Δp = 10 bar ● ● ● ● ● HD1
with pressure cut-off, remotely controlled Positive control Δp = 10 bar ● ● ● ● ● HD1G
Proportional control electrical Positive control U=24V ● ● ● ● ● EP2

Series

05 Series 6, index 3 63

Sentido de giro

28 to 160
06 Visto en el árbol de transmisión en el sentido de las agujas del reloj ● R
en sentido contrario a las agujas del reloj ● L

Material de sellado

07 FKM (fluoroelastómero) V

Árbol de transmisión

28 to 160
08 Splined shaft DIN 5480 ● Z
Parallel keyed shaft according to DIN 6885 ● P

Brida de montaje

09 ISO 3019-2; 4-hole B

Port plate for working lines

10 SAE flange ports A and S at rear (metric fastening thread) 01
SAE flange ports A and S at side (available for power controllers LA1S and LA1S5 only, metric fastening thread) 02

•= available      -= not available     = programa preferido

1 2 3 4 5 6 7 8 9 10 11 12 13
A7V ○ / 63 - V B 1

Conector para solenoides1)

11 Without connector (without solenoid, with hydraulic control only; without code)
Conector moldeado DEUTSCH, de 2 pines - sin diodo supresor P

Standard / special version

12 Standard version (without code)
Special version -S

•= available    -= not available     = programa preferido

Notas

▶Preser vation:

-Up to 12 mont hs as standard

-Up to 24 mont hs long-term

(state in plain text when ordering)

Datos técnicos

Tamaño NG 28 55 80 107 160
Desplazamiento geométrico por revolución Vg max cm3 28.1 54.8 80 107 160
Maximum rotational speed 1) At VG máximo nNombre rpm 3150 2500 2240 2150 1900
At Vg<0.74 x Vg máx nmax1 rpm 4250 3400 3000 2900 2560
Maximum rotational speed 2) nmax2 rpm 4750 3750 3350 3200 2850
Flujo At VG máximo and nNombre qv l/min 89 137 179 230 304
Poder At VG máximo ,  nNombre and Δp =350 bar P kW 52 80 105 134 177
Par de torsión At VG máximo and Δp =350 bar T Nm 156 305 446 596 891
Rotary stiffness Vg máx to V g/2 cmin kNm/rad 5 10 16 21 36
Vg/2 to 0 (interpolated) cmáx kNm/rad 16 32 49 67 104
Moment of inertia rotary group JTW kgm2 0.0042 0.0042 0.0080 0.0127 0.0253
Aceleración angular máxima α rad/s2 35900 31600 24200 19200 15300
Volumen de casos V l 0.5 0.75 1.2 1.5 2.4
Weight (approx.) m kg 17 25 40 49 71

Maximum permissible speed (limit speed)

Determinación de las características de funcionamiento

Flujo qv=(Vg ∙ n ∙ ηv) / 1000 l/min
Par de torsión T=(Vg ∙ Δp) /(20 ∙ π ∙ ηMh) Nm
Poder P=(2π ∙ T ∙ n)/60000=(qv ∙ Δp)/(600 ∙ ηt)  kW

Clave

Vg = Displacement per revolution  [cm3]

Δp = Differential pressure [bar]

n = Rotational speed [rpm]

ηv  = Volumetric efficiency

ηMh = Hydraulic-mechanical efficiency

ηt  = Total efficiency (ηt= ηv*ηMh)

Notas

▶Theore tical values, without efficiency and tolerances;values rounded

▶Operation above the maximum values or below the minimum values may result in a loss of function, a reduced service life or in the destruction of the axial piston unit. Other permissible limit values, such as speed variation, reduced angular acceleration as a function of the frequency and the permissible angular acceleration at start (lower than the maximum angular acceleration) can be found in data sheet 90261.

1) The values are valid:

- At absolute pressure Pabdominales = 1 bar at suction port S

- For the optimal viscosity range of velegir = 36 a 16 mm2/s

-For hydraulic fluid based on mineral oils.

2) Maximum rotational speed (speed limit) for increased inlet pressure Pabdominales at suction port S and Vg < Vg máx , see diagram.

Variable Displacement Piston pump A7VO