Eternal Hydraulic A7V Axial Variable Displacement Piston Pump
Variable displacement pump, axial piston bent axis design, for hydrostatic transmissions in open circuits.The flow is proportional to the drive speed and the displacement and is steplessly variable at constant drive speed.
Comprehensive program of control devices for every control and regulating unction. Simplified high performance rotary group with enhanced technical data and well-proven spherical control area.
Robust roller bearings for high loads. Hydrostatic unloading of bearings possible for continuous pressures up to 400 bar. Operation on both mineral and fire-resistant fluids. Improved port plate design and compact construction reduces noise level by 5 dBA.
MODLE CODE
| 泵型号 Pump type |
A7V斜轴式变量泵 A7V Axial piston variable displacement pump | |
| 规格 Size |
20、28、40、55、58、80、78、107、117、160、250、355、500 | |
| 变量方式 Control device | LV | 恒功率变量 Constant HP control |
| DR | 恒压变量 Constant pressure control | |
| MA | 手动变量 Manual control | |
| HD | 液拴变量 Hydraulic control | |
| 结构型式 Series | Series 1 | 规格Size 20-160 |
| Series 5. 1 | 规格Size 250-500 | |
| 转向(从轴端看)Direction of rotation | R | 顺时针clockwise |
| L | 逆时针anti-clockwise | |
| 轴伸 Shaft End |
P | 平键 keyed shaft GB1096-79 |
| Z | 花键 splined shaft DIN5480 | |
| S | 花键 splined shaft GB3478. 1-83 | |
| 油口连接 Pipe connections: |
F | 压力油口Pressure port- SAE法兰，在侧面SAE flange, on side |
| 吸油口 Suction port – SAE法兰，在侧面SAE flange, on side | ||
| G | 压力油口Pressure port一螺纹连接，在侧面threaded, on side | |
| 吸油口 Suction port – SAE法兰，在侧面SAE flange, on side | ||
| 行程限位 Stroke limiter |
O | 无 none |
| M | 机械行程限位mechanically adjustable (for LV and DR) | |
| H | 液压行程限位stroke limiter, hydraulic (for LV) | |
| 辅助元件 Auxiliary equipment |
O | 无none |
→A7V Variable Displacement Piston Pump PDF
APPLICATION
Piston pumps are widely used in high-pressure, high-flow, high-power systems and where the flow needs to be regulated, such as mobile and construction equipment, engineering vehicles, heavy-duty planers, metal forming and stamping, machine tools, hydraulic presses, oilfield equipment, mining and metallurgical machinery, marine and other hydraulic systems.
The characteristics of Eternal Hydraulic variable displacement piston pump:
· Completely interchangeable with original
· Very competitive price
· Low-noise, high efficiency, high reliability, long life
· Small size, high power density
· Excellent oil absorption properties.
· Drive shaft can withstand the axial and radial loads
· SAE and ISO mounting flange
· For pass-axis structure, and for multi-loop system