شركة ونزهو برانس للمعدات الهيدروليكية المحدودة
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
وصف تفصيلي
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.
التقييم وطلب عرض الأسعار
يجب اختيار سلسلة المنتجات هذه بما يتوافق مع الدائرة الهيدروليكية المعتمدة. تأكد من تحديد التدفق أو الإزاحة المطلوبة، والضغط المستمر وأقصى ضغط، وسرعة الدوران، ونظام التحكم، ونوع السائل، وواجهة التركيب قبل إجراء الاختيار النهائي.
المعلومات التي يجب تضمينها في طلب عرض الأسعار الخاص بك
- الازاحة أو التدفق المطلوب عند سرعة التشغيل
- ضغط النظام المستمر والقصوي
- سرعة المحرك، متطلبات التحكم ونوع الدائرة
- شفة التركيب، العمود، المنافذ، السوائل ومتطلبات الترشيح
الموارد ذات الصلة
اطلب عرض سعر · مركز التنزيل · تصنيع أصلي / تصنيع تصميمي أصلي
رمز الطلب
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | ||
| A7V | ○ | / | 63 | - | V | B | 01 |
وحدة كباس محوري
| 01 | Bent-axis design, variable, nominal pressure 350 bar, maximum pressure 400 bar | A7V |
نمط التشغيل
| 02 | مضخة، الدائرة المفتوحة | ○ |
المقاس (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 | ||||||
جهاز تحكم
| 28 | 55 | 80 | 107 | 160 | |||||
| 04 | Power controller without power override | ● | ● | ● | ● | ● | اليسار | ||
| مع قطع الضغط | ● | ● | ● | ● | ● | LRD | |||
| مع محدّد الشوط | تحكم سلبي | Δp = 25 بار | - | ● | ● | ● | ● | LRH1 | |
| with pressure cut-o ffand stroke limiter | تحكم سلبي | Δp = 25 بار | - | ● | ● | ● | ● | 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) |
|||||||||
| مع استشعار الحمل | - | ● | ● | - | - | LA1S | |||
| with load sensing and hydraulically proportional LS-override | - | ● | ● | - | - | LA1S5 | |||
| منظم الضغط | ● | ● | ● | ● | ● | دكتور | |||
| تحكم عن بعد | ● | ● | ● | ● | ● | دي إر جي | |||
| مع استشعار الحمل | - | ● | ● | ● | ● | نظام تقليل المقاومة | |||
| Proportional control hydraulic | Positive control | Δp = 10 بار | ● | ● | ● | ● | ● | HD1 | |
| with pressure cut-off, remotely controlled | Positive control | Δp = 10 بار | ● | ● | ● | ● | ● | HD1G | |
| Proportional control electrical | Positive control | الجهد = 24 فولت | ● | ● | ● | ● | ● | EP2 | |
مسلسل
| 05 | Series 6, index 3 | 63 |
اتجاه الدوران
| 28 to 160 | ||||
| 06 | تمت معاينته على عمود الدوران | مع عقارب الساعة | ● | R |
| عكس عقارب الساعة | ● | L | ||
مادة مانعة للتسرب
| 07 | FKM (إيلاستومر فلوري) | V |
عمود الدوران
| 28 to 160 | |||
| 08 | Splined shaft DIN 5480 | ● | Z |
| Parallel keyed shaft according to DIN 6885 | ● | P | |
شفة التركيب
| 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 
البرنامج المفضل
| 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) | |
| موصل ديوتش مصبوب، ذو طرفين - بدون ديود مانع للتشويش | P |
Standard / special version
| 12 | Standard version (without code) | |
| Special version | -S |
•= available -= not available البرنامج المفضل
ملاحظات
▶Preser vation:
-Up to 12 mont hs as standard
-Up to 24 mont hs long-term
(state in plain text when ordering)
البيانات الفنية
| حجم | غير مقبول | 28 | 55 | 80 | 107 | 160 | ||
| الإزاحة الهندسية لكل دورة | Vg max | سم3 | 28.1 | 54.8 | 80 | 107 | 160 | |
| Maximum rotational speed 1) | At Vجي ماكس | nnom | دورة في الدقيقة | 3150 | 2500 | 2240 | 2150 | 1900 |
| At Vg<0.74 x Vg الحد الأقصى | nmax1 | دورة في الدقيقة | 4250 | 3400 | 3000 | 2900 | 2560 | |
| Maximum rotational speed 2) | nmax2 | دورة في الدقيقة | 4750 | 3750 | 3350 | 3200 | 2850 | |
| تدفق | At Vجي ماكس and nnom | qv | لتر/دقيقة | 89 | 137 | 179 | 230 | 304 |
| Power | At Vجي ماكس , nnom and Δp =350 bar | P | كيلوواط | 52 | 80 | 105 | 134 | 177 |
| Torque | At Vجي ماكس and Δp =350 bar | T | لا شيء جديد | 156 | 305 | 446 | 596 | 891 |
| Rotary stiffness | Vg الحد الأقصى to V g/2 | cmin | kNm/rad | 5 | 10 | 16 | 21 | 36 |
| Vg/2 to 0 (interpolated) | cالحد الأقصى | 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
| تدفق | qv=(Vg ∙ n ∙ ηv) / 1000 | لتر/دقيقة |
| Torque | T=(Vg ∙ Δp) /(20 ∙ π ∙ ηمم) | لا شيء جديد |
| Power | P=(2π ∙ T ∙ n)/60000=(qv ∙ Δp)/(600 ∙ ηt) | كيلوواط |
Key
Vg = Displacement per revolution [cm3]
Δp = Differential pressure [bar]
n = Rotational speed [rpm]
ηv = Volumetric efficiency
ηمم = Hydraulic-mechanical efficiency
ηt = Total efficiency (ηt= ηv*ηمم)
ملاحظات
▶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 Pabs = 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 Pabs at suction port S and Vg < Vg الحد الأقصى , see diagram.