Axial-piston pumps НК type of variable capacity
The pumps of HK type find application in hydraulic actuators of ship mechanisms and other hydraulic systems. The pumps are used in hydraulic systems of all circuit types. As for control, the following versions are available:
For closed circuit:
- with remote hydraulic control according to control signal pressure, with power transducer or without it;
- with mechanical control by means of a servo spool;
- with remote hydraulic control according to the volume of fluid entering the spaces of servo drive controls.
For open circuit:
- with a power transducer.
For semi-closed circuit:
- with remote hydraulic control according to the pressure of control signal, with inflow valves, with power transducer or without it;
- with remote hydraulic control according to the volume of fluid entering the spaces of servo drive controls.
Available is hand-driven version with smooth control of constant delivery by means of a flywheel. The pumps design with a power regulator ensures constant power consumption, if load changes in the system.
Pressure-controlled pumps fitted with power transducers allow to limit power consumption to a certain value which is defined by setting of power transducer.
Basic technical data | |||||
---|---|---|---|---|---|
Parameter | Standard size rating | ||||
НК 20 | НК 25 | НК 32 | НК 40 | НК 50 | |
Volumetric capacity at maximum controlled parameter, cm³ | 54,8 | 107 | 225 | 468 | 915 |
Pressure, MPa: | |||||
- rated | 16 | ||||
- maximum | 25 | 35 | |||
Rotational frequency at the pressure of 16 MPa, rpm: | |||||
- rated | 1450 | 1450 | 970 | 970 | 735 |
- maximum | 3150 | 2500 | 2000 | 1600 | 1250 |
- minimum | 400 | 400 | 400 | 300 | 300 |
Rated delivery at maximum controlled parameter, l/min | 75,5 | 147,4 | 207,3 | 440 | 650 |
Rated power at maximum controlled parameter, kW | 21,7 | 42,2 | 60 | 125 | 185 |
Delivery coefficient, not less than | 0,95 | 0,97 | |||
Kinematic viscosity of working fluid, m²/s (sSt) | 0,05…10 (5…1000) | ||||
Mass, kg | 85 | 130 | 215 | 550 | 995 |
Overall dimensions, mm: | |||||
- L | 474 | 547 | 683 | 897 | 1090 |
- B | 429 | 449 | 549 | 721 | 834 |
- H | 404 | 459 | 528 | 792 | 937 |
Note: Given here is a maximum value of size "B". It depends on a control system version.
The pumps can be customized in a short time.
Pumps of НК type are approved by the RF Register of Shipping for application on sea-going vessels.