Axial Piston Pump, A10V
Overview
Our OSA10V series pump is a variable displacement axial piston pump in swash plate design. It is specially designed for hydrostatic drives in open circuit operation. Designed with through shaft structure and central spring return mechanism, the rated working pressure of this variable displacement pump is up to 28MPa and its nominal service life reaches more than 10000 hours. The axial piston variable pump comes with plane flow distribution design and the pistons are arranged around the shaft with their axes parallel to the shaft, thus ensuring high power to weight ratio.
Constructed from the continuous cast iron bars manufactured by the United Cast Bar Group, cylinder block of the axial piston pump boasts exceptional shock absorption performance and unprecedented resistance to abrasion and corrosion. In addition, the hydraulic pump employs SKF bearings from Timken and seals from Simrit/Nok.
- OSA10VSO Axial Piston Pump (DFLR Control)
- Control Valve
- Shaft End
This series swash plate pump from OUSHENG is mainly used in the hydraulic systems of construction machinery, cement machinery, water jet cutters, metallurgical and forging machines, injection molding machines and ships.
Features
1. Capacity of the pump is in direct proportion to its rotational speed and displacement. Stepless adjustment of displacement can be realized by adjusting the swivel angle of swash plate.
2. Through-shaft construction enables it to form a combination pump.
3. The positive displacement pump comes with a central spring return mechanism.
4. It boasts excellent suction performance.
5. Rated operating pressure of the hydraulic system components is up to 28MPa.
6. Fast control response;
7. Low noise;
8. High longevity;
9. High power to weight ratio;
10. Drive shaft of the axial piston pump can bear axial and radial load.
11. Flange mounting complies with ISO and SAE standards.
12. Multiple forms of shaft extension;
13. Working hydraulic fluid ports can be arranged at two sides of the pump or at its rear.
14. Installation position is optional.
15. It is able to run on HF fluid, with operating parameter lowered.
1.Operating Pressure Range-Inlet Side
Pressure of suction port S (Absolute pressure)
Minimum pressure: Ps min=0.8 bar
Maximum pressure: Ps max=30 bar
2. Operating Pressure Range-Outlet Side
Pressure of port B (Absolute pressure)
Nominal pressure: Pn=280 bar
Peak pressure: Pmax=350 bar
3. Flow Direction
S→B
4. Casing Oil Drain Pressure
Maximum allowable pressure of the drain port (Port L, L1): The maximum pressure can be 0.5bar higher than inlet port pressure (Port S). But the absolute pressure can not be 2bar higher.
5. Check the file in PDF format for parameter list, permissible bending moment, characteristic curves, through drives, dimensions, installation methods and other information.
6. Specifications OSA10V Single Pump, DR Constant Pressure Control| No. | Model | Specifications |
| 1 | OS10V Single pump | OS10V (S) O 18 DR(DRG)/31R (L) -PP (S; R; U; W) A(C)12NOO |
| 2 | OS10V (S) O 28 DR(DRG)/31R (L) -PP (S;R;U;W) A(C)12NOO | |
| 3 | OS10V (S) O 45 DR(DRG)/31R (L) -PP (S;R;U;W) A(C)12NOO | |
| 4 | OS10V (S) O 71 DR(DRG)/31R (L) -PP (S;R;U;W) A(C)12NOO | |
| 5 | OS10V (S) O 100 DR(DRG)/31R (L) -PP (S;R;U;W) A(C)12NOO | |
| 6 | OS10V (S) O 140 DR(DRG)/31R (L) -PP (S;R;U;W) B(D)12NOO |
| No. | Model | Specifications |
| 1 | OS10V Single pump | OS10V(S)O 18 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12NOO |
| 2 | OS10V(S)O 28 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 3 | OS10V(S)O 45 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 4 | OS10V(S)O 71 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 5 | OS10V(S)O 100 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 6 | OS10V(S)O 140 DFR(DFR1)/31R(L)-PP(S;R;U;W)B(D)12NOO |
| No. | Model | Specifications |
| 1 | OS10V Single pump | OS10V(S)0 18 DFLR/31R(L)-PP(S;R;U;W)A(C)12NOO |
| 2 | OS10V(S)0 28 DFLR/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 3 | OS10V(S)0 45 DFLR/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 4 | OS10V(S)0 71 DFLR/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 5 | OS10V(S)0 100 DFLR/31R(L)-PP(S;R;U;W)A(C)12NOO | |
| 6 | OS10V(S)0 140 DFLR/31R(L)-PP(S;R;U;W)B(D)12NOO |
| No. | Model | Specifications |
| 1 | OS10V Through shaft pump | OS10V(S)O 18 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12K(52,B2...) |
| 2 | OS10V(S)O 28 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12K(52,B2...) | |
| 3 | OS10V(S)O 45 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12K(52,B2...) | |
| 4 | OS10V(S)O 71 DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12K(52,B2...) | |
| 5 | OS10V(S)O 100DFR(DFR1)/31R(L)-PP(S;R;U;W)A(C)12K(52,B2...) | |
| 6 | OS10V(S)O 140DFR(DFR1)/31R(L)-PP(S;R;U;W)B(D)12K(52,B2...) |
| No. | Model | Specifications |
| 1 | OS10V Through shaft pump | OS10V(S)O 18 DFLR/31R(L)-PP(S;R;U;W)A(C)12K(52,B2 …) |
| 2 | OS10V(S)O 28 DFLR/31R(L)-PP(S;R;U;W)A(C)12K(52,B2 …) | |
| 3 | OS10V(S)O 45 DFLR/31R(L)-PP(S;R;U;W)A(C)12K(52,B2 …) | |
| 4 | OS10V(S)O 71 DFLR/31R(L)-PP(S;R;U;W)A(C)12K(52,B2 …) | |
| 5 | OS10V(S)O 100 DFLR/31R(L)-PP(S;R;U;W)A(C)12K(52,B2 …) | |
| 6 | OS10V(S)O 140 DFLR/31R(L)-PP(S;R;U;W)B(D)12K(52,B2 …) |
1. Direct Control- DG
An external switching pressure can be applied to the Port X to minimize the swivel angle of the variable displacement axial piston pump. Control oil can be directly supplied to control piston under the minimum necessary pressure of 50bar. The variable pump can only be shifted between Vgmax and Vgmin.
Note: The switching pressure needed at the Port X is in direct correlation with the actual working pressure of Pressure Port B.
2. Pressure Control- DR
Pressure control will keep the outlet pressure constant. Therefore, the variable displacement pump only delivers as much hydraulic fluid as required by the actuator elements of the hydraulic system. The outlet pressure can be set on the control valve.
3. Remote Pressure Control- DRG
The function and control device of constant pressure control (DRG) are similar to that of DR. It can realize remote control by connecting an external relief valve with Port X. Relief valve is not included in the scope of supply for DRG control.
4. Pressure and Flow Control- DFR/DFR1
In addition to the pressure control, outlet flow of the swashplate pump can be adjusted depending on the differential pressure of throttle valve installed on the oil supply pipe. The variable pump delivers a certain flow of fluid the hydraulic actuator needs, which is free from the influence of working pressure changes. Pressure control takes precedence over flow control.
Relief valve is not included in the scope of supply for DFR/DFR1 control;
The throttle orifice between Port X of DFR1 control valve and the pump chamber is enclosed.
5. Pressure, Flow and Power Control- DFLR
To obtain a constant driving torque under changing working pressure, it keeps the product of flow and pressure constant by changing output flow, namely to keep the output power of the pump constant. Flow control can only be conducted below the constant power control curve.
Relief valve is not included in the scope of supply for DFLR control.
6. Flow Control Associated with the Pilot Pressure-FHD
The displacement of the variable displacement axial piston pump depends on the pilot pressure-Pst. Hydraulic fluid port Y needs a constant pressure Py (Py= 35bar).
An overriding pressure control is integrated and applicable for stepless adjustment on the control valve.
| E | OS10VS | O | 28 | DR | / | 31 | R | ---- | P | P | A | 12 | K | B3 |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| Mineral oil (No Code) | ---- |
| HFA , HFB , HFC Hydraulic fluid | E |
| Axial piston, straight shaft, variable, used for mobile machinery | 0810V |
| Axial piston, straight shaft, variable, used for industrial applications | OS10VS |
| Open circuit | O |
| Nominal displacement ml/r | 18 | 28 | 45 | 71 | 100 | 140 |
| Direct control, two point control | ● | ● | ● | ● | ● | ● | DG |
| Pressure control | ● | ● | ● | ● | ● | ● | DR |
| Remote pressure control | ● | ● | ● | ● | ● | ● | DRG |
| Pressure and flow control | ● | ● | ● | ● | ● | ● | DFR |
| Pressure and flow and power control | - | ● | ● | ● | ● | ● | DFLR |
| Flow control associated with the pilot pressure | - | 〇 | 〇 | 〇 | 〇 | 〇 | FHD |
| ---- | 31 |
| Clockwise | R |
| Counterclockwise | L |
| NBR , Shaft seal FKM | P |
| FKM | V |
| Keyed shaft extension DIN6885 | ● | ● | ● | ● | ● | ● | P |
| Splined shaft extension SAE | ● | ● | ● | ● | ● | ● | S |
| Splined shaft extension SAE ( with higher torque for through drive ) | ● | ● | ● | ● | - | - | R |
Note: The OS10V type axial piston pump for mobile machinery has no P type keyed shaft extension. "●" Available; "〇" In preparation; "-" Not available
10.Flange Mounting Range| 18 | 28 | 45 | 71 | 100 | 140 | ||
| ISO 2 holes | ● | ● | ● | ● | ● | - | A |
| ISO 4 holes | - | - | - | - | - | ● | B |
| SAE 2 holes | ● | ● | ● | ● | ● | 〇 | C |
| SAE 4 holes | - | - | - | - | - | ● | D |
Note: OSIOV type pump for mobile machinery uses s C and D flanges; OS1QVS pump for industrial application uses A and B flanges.
11. Ports Type| Suction port S and pressure port B located in the rear | 11 |
| Suction port S and pressure port B located in both sides | 12 |
Note: No port 11 in type OS10VS pump for industrial applications
12, 13- Through Drive| 18 | 28 | 45 | 71 | 100 | 140 | ||||
| Without through drive | ● | ● | ● | ● | ● | ● | M00 | ||
| With through drive, mounting dimensions are as follows | ● | ● | ● | ● | ● | ● | K | ||
| Flange | Spline shaft | Subordinate pump | |||||||
| SAE82, 2 holes | 3/4in 11T 16/32DP S shaft | OS10VSO 18/31 | ● | ● | ● | ● | ● | ● | 52 |
| SAE 101, 2 holes | 7/8in 13T 16/32DP S shaft | OS10VSO 28/31 | - | ● | ● | ● | ● | ● | 68 |
| SAE 101, 2 holes | 1in 15T 16/32DP S shaft | OS10VSO 45/31 | - | - | ● | ● | ● | ● | 04 |
| SAE 127, 2 holes | 1 1/4in 14T 12/24DP S shaft | OS10VSO 71/31 | - | - | - | ● | ● | ● | 07 |
| SAE 127, 2 holes | 1 1/2in 17T 12/24DP S shaft | OS10VSO 100/31 | - | - | - | - | ● | ● | 24 |
| SAE 152, 4 holes | 1 3/4in 13T8/16DP S shaft | OS10VSO 140/31 | - | - | - | - | - | ● | 17 |
| ISO 80, 2 holes | 3/4in 11T16/32DP S shaft | OS10VSO18/31 | ● | ● | ● | ● | ● | ● | B2 |
| ISO 100, 2 holes | 7/8in 13T 16/32DP S shaft | OS10VSO28/31 | - | ● | ● | ● | ● | ● | B3 |
| ISO 100, 2 holes | 1in 15T 16/32DP S shaft | OS10VSO45/31 | - | - | ● | ● | ● | ● | B4 |
| ISO 125 ， 2 holes | 1 1/4in 14T12/24DP S shaft | OS10VSO71/31 | - | - | - | ● | ● | ● | B5 |
| ISO 125 ， 2 holes | 1 1/2in 17T 12/24DP S shaft | OS10VSO100/31 | - | - | - | - | ● | ● | B6 |
| ISO 180 ， 4 holes | 1 3/4in 13T 8/16DP S shaft | OS10VSO140/31 | - | - | - | - | - | ● | B7 |
Note: No model B2, B3, B4, B5, B6, B7 in OS10V type pump for mobile machinery.
Description of combination pump: Two pumps can be connected in series by their head and end, namely integrated to be a combination pump by the means of through-shaft, and the second pump of the series combination is called the subordinate pump.
If placing an order, please notice the model of the combination pump is a combination of the first pump model and the second pump model. Example: OS4VSO45DR/31R-PPA12KB3 OS10VSO28DR/31R-PSA12N00
