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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

Description détaillée

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.

Sélection et DPX

Cette gamme de produits doit être choisie en fonction du circuit hydraulique approuvé. Confirmez le débit ou la cylindrée requis, la pression continue et de pointe, la vitesse d'entraînement, le type de commande, le fluide et l'interface d'installation avant la sélection finale.

Informations à inclure dans votre demande de devis

  • Cylindrée ou débit requis à la vitesse de service
  • Pression système continue et de pointe
  • Vitesse d'entraînement, exigence de contrôle et type de circuit
  • Bride de fixation, arbre, orifices, exigences en matière de fluide et de filtration

Ressources associées

Demander un devis · Centre de téléchargement · OEM / ODM

Code de commande

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

Unité à pistons axiaux

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

Mode de fonctionnement

02 Pompe à circuit ouvert ○

Taille (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

Dispositif de commande

28 55 80 107 160
04 Power controller without power override ● ● ● ● ● LR
avec coupure de pression ● ● ● ● ● LRD
avec limiteur de course témoin négatif Δp = 25 bar - ● ● ● ● LRH1
with pressure cut-o ffand stroke limiter témoin négatif 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)
avec détection de charge - ● ● - - LA1S
with load sensing and hydraulically proportional LS-override - ● ● - - LA1S5
Régulateur de pression ● ● ● ● ● Dr
télécommandé ● ● ● ● ● GDR
avec détection de charge - ● ● ● ● SRD
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

Séries

05 Series 6, index 3 63

Sens de rotation

28 to 160
06 Vu sur l'arbre de transmission dans le sens des aiguilles d'une montre ● R
dans le sens inverse des aiguilles d'une montre ● L

Matériau d'étanchéité

07 FKM (fluoroélastomère) V

Arbre de transmission

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

Bride de fixation

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     = programme préféré

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

Connector for solenoids1)

11 Without connector (without solenoid, with hydraulic control only; without code)
Connecteur moulé DEUTSCH, 2 broches - sans diode de suppression P

Standard / special version

12 Standard version (without code)
Special version -S

•= available    -= not available     = programme préféré

Notes

▶Preser vation:

-Up to 12 mont hs as standard

-Up to 24 mont hs long-term

(state in plain text when ordering)

Données techniques

Taille NG 28 55 80 107 160
Cylindrée géométrique par tour Vg max cm3 28.1 54.8 80 107 160
Maximum rotational speed 1) At VGiga nnom tours par minute 3150 2500 2240 2150 1900
At Vg<0.74 x Vg max nmax1 tours par minute 4250 3400 3000 2900 2560
Maximum rotational speed 2) nmax2 tours par minute 4750 3750 3350 3200 2850
Flux At VGiga and nnom qv L/min 89 137 179 230 304
Puissance At VGiga ,  nnom and Δp =350 bar P kW 52 80 105 134 177
Torque At VGiga and Δp =350 bar T Rien 156 305 446 596 891
Rotary stiffness Vg max to V g/2 cmin kNm/rad 5 10 16 21 36
Vg/2 to 0 (interpolated) cmax kNm/rad 16 32 49 67 104
Moment of inertia rotary group JTW kgm2 0.0042 0.0042 0.0080 0.0127 0.0253
Maximum angular acceleration α rad/s2 35900 31600 24200 19200 15300
Case volume 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)

Determining the operating characteristics

Flux qv=(Vg ∙ n ∙ ηv) / 1000 L/min
Torque T=(Vg ∙ Δp) /(20 ∙ π ∙ ηhm) Rien
Puissance P=(2π ∙ T ∙ n)/60000=(qv ∙ Δp)/(600 ∙ ηt)  kW

Key

Vg = Displacement per revolution  [cm3]

Δp = Differential pressure [bar]

n = Rotational speed [rpm]

ηv  = Volumetric efficiency

ηhm = Hydraulic-mechanical efficiency

ηt  = Total efficiency (ηt= ηv*ηhm)

Notes

▶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 Pabdos = 1 bar at suction port S

- For the optimal viscosity range of vopt = 36 to 16 mm2/s

-For hydraulic fluid based on mineral oils.

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

Variable Displacement Piston pump A7VO