Variable Displacement Axial Piston Pumps S Series
- Displacement 33 ... 90 cmᶟ/rev
- Rated pressure 357 bar
- Maximum pressure 420 bar
- Control hydromechanical, 3-position electrical
- Tandem capability SAE standard
S Series variable-displacement axial piston pumps: PVS33, PVS52, PVS71, PVS90 and PVS112 are designed for closed-circuit hydraulic systems. They are used in hydrostatic transmissions for travel drives and working equipment of combine harvesters, road-building machinery and other mobile machines.
Applications:
- combine harvesters;
- truck mixers;
- road rollers.
According to the applicable technical specifications (TU), Hydrosila products are not classified as dual-use products.
S Series pumps feature a proven design based on the Sauer Series 20 design concept. They are intended for hydrostatic transmissions of mobile machinery and combine reliability, serviceability and stable performance under various operating conditions.
Features:
- axial piston swashplate design;
- variable displacement;
- high volumetric efficiency;
- integrated charge pump;
- smooth reversal of hydraulic fluid flow direction;
- lightweight pistons for reliable operation under high-load conditions;
- mounting flanges in accordance with SAE standards;
- tapered roller bearings designed to withstand significant radial and axial loads;
- drive shaft face seal providing reliable external sealing.
Hydraulic fluids: mineral and special oils with a kinematic viscosity of 30...70 mm²/s at +50 °C.
The fluids must comply with DIN 51524-2.
Technical Specifications of PVS Series Axial Piston Pumps
| Код робочого об'єму Displacement code |
33 | 52 | 71 | 90 | |
|---|---|---|---|---|---|
| Максимальний робочий об'єм Displacement max |
cm3 ccm |
33,3 | 51,6 | 69,8 | 89 |
| Максимальна подача Maximum flow |
л/хв l/min |
113,5 | 151,8 | 186,3 | 218,9 |
| Максимальний тиск в гідролінії високого тиску Maximum pressure in high pressure line |
bar | 420 | |||
| Номінальний тиск в гідролінії високого тиску Rated pressure in high pressure line |
bar | 357 | |||
| Максимальний тиск дренажу Maximum case pressure |
bar | 2,5 | |||
| Максимальна частота обертання Maximum speed |
мин-1 min-1 |
3590 | 3100 | 2800 | 2600 |
| Мінімальна частота обертання Minimum speed |
мин-1 min-1 |
500 | |||
| Номінальна частота обертання Rated speed |
мин-1 min-1 |
1500 | |||
| Максимальний кут нахилу похилої шайби Maximum swashplate angle |
град Degr |
± 18 | |||
| Номінальна потужність Rated power |
кВт kW |
18,7 | 29 | 39,3 | 63,3 |
| Вага (без робочої рідини) Weight (without fluid) |
кг kg |
45 | 55 | 63 | 78 |
