VANE PUMP PV7-2X/20-25RA01MA0-10
Manufacturer: Bosch Rexroth
Material #: R900950955
Model : PV7-2X/20-25RA01MA0-10
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth PV7-2X/20-25RA01MA0-10 (R900950955) is a high-performance rotary vane variable displacement pump designed for industrial applications operating within an open control loop. It features a robust size of 20 ccm and can handle a maximum pressure, ensuring reliable and efficient operation under various conditions. The pump operates with a minimum speed and can reach a maximum speed, providing a max flow rate that suits its intended applications.
With NBR seals, the PV7-2X/20-25RA01MA0-10 is compatible with hydraulic fluids such as HLP, HLPD, HVLP, and HVLPD. Its clockwise rotation and the absence of through-drive contribute to its straightforward design, while its weight ensures stability and durability in operation. The pump's variable displacement type is engineered to offer precise control over fluid flow, enhancing system efficiency.
The construction of this Bosch Rexroth pump includes essential components such as housing, cover, rotor, vanes, stator ring, compression spring, set screw, and control plate. These elements work together to form the cells necessary for transporting hydraulic fluid through suction and displacement processes. A set screw allows for the limitation of maximum flow to meet specific system requirements.
Pressure control within the PV7-2X/20-25RA01MA0-10 is achieved through an adjustable stator ring balanced by spring force against load resistance pressure. This mechanism ensures that the flow rate settles at the set value while minimizing power loss and heating of the hydraulic fluid.
Designed with low noise levels in mind, this pump achieves minimal flow pulsation and high repetition accuracies with low pressure peaks during down control. Its hydrodynamically lubricated plain bearings promise an extended lifecycle. The mounting and connection dimensions align with VDMA and ISO standards for compatibility across various industrial settings.
$3,372.00 USD
Availability: 6 In Stock
Available for immediate shipmentQty: Delivered as early as May 14, 2024 when ordered in
This product is eligible for factory repair.
Variable displacement pump, size 25 ccm, pressure 100 bar for industrial applications, open circuit
High reliability. Low noise and low pulsation level. High efficiency. Quick response behavior of the controller.
Unpacked Weight: 11.38 kg
Very short control times Low operating noise Mounting and connection dimensions according to VDMA 24560/1 and ISO 3019-2 Good efficiency Long life cycle Variable displacement
Hydraulic pumps of type PV7...A are direct operated vane pumps with adjustable displacement.
They basically comprise of housing (1), cover (2), rotor (3), vanes (4), stator ring (5), compression spring (6), set screw (7) and control plate (8).
For limitation of the maximum flow, the pump is equipped with a set screw (9).
The driven rotor (3) rotates within the stator ring (5). The centrifugal force presses the vanes (4) guided in the rotor (3) against the internal sliding surfaces of the stator ring (5).
Suction and displacement procedure
The cells (10) necessary to transport the hydraulic fluid are formed by the vanes (4), the rotor (3), the stator (5), the control plate (8) and the cover (2).
The cell volume increases by the rotation of the rotor (3) and via the suction channel (S), the cells (10) are filled with hydraulic fluid. When the largest cell volume is achieved, the cells (10) are separated from the suction side.
If the rotor (3) is rotated further, connection to the pressure side is established, the cells narrow and displace the hydraulic fluid via the pressure channel (P) into the system.
Pressure control
The stator ring (5) is held in the eccentric initial position by the spring (6). The maximum operating pressure required in the system is set at the set screw (7) using the spring (6).
The pressure building up by the load resistance acts at the pressure side on the inner sliding surface of the stator ring (5), against the force of the spring (6).
If the pressure corresponding to the set spring force has been reached, the stator ring (5) is pushed out of its eccentricity in zero position direction. The flow settles at the set value which is just removed. If the peak pressure set at the spring (6) is reached, the pump controls the flow to almost zero. The operating pressure is maintained and only the leakage is replaced. In this way, the power loss and heating of the hydraulic fluid are kept to a minimum.
PV7-1X/06…A…
PV7-2X/20…A…
Thanks to their specific design, PV7-type vane pumps with adjustable displacement boast low flow pulsation and achieve very high repetition accuracies with low pressure peaks during the down control. The noise optimization achieved by adjusting the height adjustment screw provides for a low operating noise. Hydrodynamically lubricated plain bearings ensure a long life cycle.
PV7‒../06-10
PV7‒../06-10....A0-05...
PV7‒../06-10....A0-10...
Sound pressure level
Notice
Characteristic curves measured with n = 1450 min-1; ν = 41 mm2/s; θ = 50 °C
Sound pressure level measured in the sound measuring chamber according to DIN 45635, sheet 26; distance: Microphone ‒ Pump = 1 m
PV7‒../06-14
PV7‒../06-14....A0-04...
PV7‒../06-14....A0-07...
Sound pressure level
Notice
Characteristic curves measured with n = 1450 min-1; ν = 41 mm2/s; θ = 50 °C
Sound pressure level measured in the sound measuring chamber according to DIN 45635, sheet 26; distance: Microphone ‒ Pump = 1 m
PV7‒../20-20
PV7‒../20-20....A0-05...
PV7‒../20-20....A0-10...
Sound pressure level
Notice
Characteristic curves measured with n = 1450 min-1; ν = 41 mm2/s; θ = 50 °C
Sound pressure level measured in the sound measuring chamber according to DIN 45635, sheet 26; distance: Microphone ‒ Pump = 1 m
PV7‒../20-25
V7‒../20-25....A0-05...
V7‒../20-25....A0-10...
Sound pressure level
Notice
Characteristic curves measured with n = 1450 min-1; ν = 41 mm2/s; θ = 50 °C
Sound pressure level measured in the sound measuring chamber according to DIN 45635, sheet 26; distance: Microphone ‒ Pump = 1 m
The control times apply to the shown measurement set-up.
With different set-ups and other line lengths, the control times change, as well.
Circuit diagram
|
1 |
Directional valve (switching time duration 30 ms) |
|
2 |
Throttle for setting the pressure during displacement |
|
3 |
Hydraulic pump |
|
4 |
pressure tapping point |
Down control
qv displacement → qv zero stroke
|
Pump type |
Pressure |
Control times (average) |
||
|
pnbar |
pmax 1) |
t1 down |
t2 down |
|
|
06-10...10 |
100 bar |
150 bar |
85 |
90 |
|
06-10...05 |
50 bar |
130 bar |
70 |
110 |
|
06-14...07 |
70 bar |
130 bar |
80 |
100 |
|
06-14...04 |
40 bar |
100 bar |
65 |
90 |
|
20-20...10 |
100 bar |
170 bar |
80 |
125 |
|
20-25...10 |
100 bar |
170 bar |
80 |
125 |
|
20-25...05 |
50 bar |
120 bar |
60 |
85 |
| 1) | Admissible pressure peaks |
Up control
qv zero stroke → qv displacement
|
Pump type |
Pressure |
Control times (average) |
|
|
pnbar |
t1 up |
t2 up |
|
|
06-10...10 |
100 bar |
35 |
60 |
|
06-10...05 |
50 bar |
20 |
30 |
|
06-14...07 |
70 bar |
30 |
50 |
|
06-14...04 |
40 bar |
20 |
35 |
|
20-20...10 |
100 bar |
25 |
45 |
|
20-25...10 |
100 bar |
25 |
45 |
|
20-25...05 |
50 bar |
20 |
40 |
PV7-../06
Dimensions in mm
|
1 |
Flow control |
|
2 |
Pressure adjustment by means of set screw (standard), ordering code ...0... |
|
3 |
Lock (optional), ordering code ...3... |
|
4 |
Space required to remove the key |
Ports
|
Denomination |
Size |
|
|
S |
Suction port |
G1/2 |
|
P |
Pressure port |
G3/8 |
|
L |
Leakage connection |
G1/4 |
Adjustment information
Flow control (1)
with clockwise rotation, reduction of the flow with counterclockwise rotation, increase in flowPressure adjustment (2)
with clockwise rotation, increase in the operating pressure with counterclockwise rotation, reduction of the operating pressurePV7-../20
Dimensions in mm
|
1 |
Flow control |
|
2 |
Pressure adjustment by means of set screw (standard), ordering code ...0... |
|
3 |
Lock (optional), ordering code ...3... |
|
4 |
Space required to remove the key |
Ports
|
Denomination |
Size |
|
|
S |
Suction port |
G3/4 |
|
P |
Pressure port |
G1/2 |
|
L |
Leakage connection |
G1/4 |
Adjustment information
Flow control (1)
with clockwise rotation, reduction of the flow with counterclockwise rotation, increase in flowPressure adjustment (2)
with clockwise rotation, increase in the operating pressure with counterclockwise rotation, reduction of the operating pressureFluid tank
Adjust useful volume of the tank to the operating conditions. The admissible fluid temperature must not be exceeded; use coolers, if necessary.
Lines and connections
Remove the protective plug at the pump. We recommend using seamless precision steel pipes according to DIN 2391 and releasable pipe connections. Select the inner width of the pipes according to the connections. Pipelines and fittings must be carefully cleaned before assembly.Proposal for piping layout
Minimum dimensions [mm]
Lay the leakage line so that the pump cannot run empty! Leakage and return fluid must not be directly sucked in again under any circumstances!
Filter
Use a return flow or pressure filter, if possible.
(Suction filters only in connection with underpressure switch / clogging indicator).
Hydraulic fluid
Please observe our provisions according to data sheet 90220. We recommend brand hydraulic fluids Different hydraulic fluid types must not be mixed as this might result in degradation and deterioration of the lubricity. According to the operating conditions, the hydraulic fluid must be renewed at certain time intervals. In this connection, it is also necessary to clean the hydraulic fluid tank from residues.Drive
Electric motor + pump carrier + coupling + pump
No radial and axial forces on the pump drive shaft admissible! Motor and pump must be exactly aligned! Use a torsionally flexible coupling.
Installation positions
Horizontal position preferred
B3
B5
V1
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