Rexroth hydraulic pump A11VO series specifications
Parameter Description of Rexroth Hydraulic Pump A11VO Series
The Rexroth A11VO series is a high-performance variable displacement axial piston pump with a swashplate design, mainly developed for hydrostatic drives in open-circuit hydraulic systems. It is widely used in mobile applications such as construction machinery, mining equipment and road machinery, featuring self-priming capability, reliable performance and flexible control modes.
1. Core Technical Specifications
The following parameters are theoretical values (excluding efficiency and tolerances) for the standard version of the A11VO series, applicable to mineral oil and most HF fire-resistant hydraulic fluids. For models with an optional built-in charge pump (marked as A11VLO), parameters may vary slightly.
|
Model (Nominal Size)
|
Maximum Displacement (cm³/rev)
|
Nominal Pressure (bar)
|
Maximum Pressure (bar)
|
Maximum Speed (rpm)
|
Maximum Flow (l/min)
|
|---|---|---|---|---|---|
|
A11VO40
|
42
|
350
|
400
|
3000
|
126
|
|
A11VO60
|
58.5
|
350
|
400
|
2700
|
158
|
|
A11VO75
|
74
|
350
|
400
|
2550
|
189
|
|
A11VO95
|
93.5
|
350
|
400
|
2350
|
220
|
|
A11VO130
|
130
|
350
|
400
|
2100
|
273
|
|
A11VO145
|
145
|
350
|
400
|
2200
|
319
|
|
A11VO190
|
193
|
350
|
400
|
2100
|
405
|
|
A11VO260
|
260
|
350
|
400
|
1800
|
468
|
2. Important Notes
-
The maximum speed specified in the table refers to the speed when the displacement reaches the maximum value; if the displacement is less than the maximum, the maximum speed can be appropriately increased (e.g., the maximum speed of A11VO40 can reach 3500 rpm when the displacement is less than 42 cm³/rev).
-
The pump can operate under self-priming conditions or with tank pressurization; models with a nominal size of 130 to 260 can be equipped with an optional built-in charge pump (impeller) to ensure stable operation of the hydraulic system.
-
The output flow is proportional to the drive speed and displacement, and can be continuously adjusted between the maximum flow (qv max) and the minimum flow (qv min = 0) through closed-loop control.
-
The recommended operating viscosity range is 16–36 mm²/s, and the operating temperature is -20 °C to +80 °C; the storage temperature ranges from -40 °C to +100 °C.
-
The pump supports through-drive, which can be equipped with gear pumps or axial piston pumps of the same nominal size, suitable for complex hydraulic systems requiring multiple pumps.
3. Series Features
-
Design: Adopts a swashplate-type axial piston structure, with variable displacement and compact overall design, suitable for open-circuit hydrostatic drives.
-
Pressure Performance: Nominal pressure of 350 bar and maximum pressure of 400 bar, providing powerful power output for harsh working conditions such as heavy-duty machinery.
-
Control Modes: A variety of control options are available, including power control, pressure control, and electric control with proportional solenoid; the power control can be adjusted externally even when the pump is running.
-
Reliability: High efficiency, low noise, long service life, and modular design for easy maintenance and repair; it can operate stably in harsh environments.
-
Applicability: Primarily designed for mobile applications, and also suitable for industrial hydraulic systems requiring high pressure and flexible control, such as concrete pump trucks, compaction machinery and hoisting machinery.
