PURPOSE

The pumps of HK type find application in hydraulic actuators of ship mechanisms and other hydraulic systems.

Pumps of НК type are approved by the Russian Federation Register of Shipping for application on sea-going vessels.

DESIGN

The pumps are used in hydraulic systems of all circuit types. As for control, there are the following versions available.

For closed circuit:

  • with remote hydraulic control according to a control signal pressure, with power transducer or without it;
  • with mechanical control by means of a servospool;
  • with remote hydraulic control according to a volume of fluid entering the spaces of control servodrive;
  • with electrohydraulic control.


For open circuit:

  • with a power transducer;
  • with various types of control.
  • For semi-closed circuit:
  • with remote hydraulic control according to a pressure of a control signal, with inflow valves, with power transducer or without it;
  • with remote hydraulic control according to a volume of fluid entering the spaces of control servodrive.


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 a system.

Pressure-controlled pumps fitted with a power transducer allow to limit power consumption to a certain value which is defined by a setting of a power transducer.

Parameter

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

maximum

 

16

25

 

16

25

 

16

25

 

16

35

 

16

35

Rotational frequency at a pressure of 16 MPa, rpm:

rated

maximum

minimum

 

1450

3150

400

 

1450

2500

400

 

970

2000

400

 

970

1600

300

 

735

1250

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

0.95

0.95

0.97

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

В

Н

 

474

429

404

 

547

449

459

 

683

549

528

 

897

721

792

 

1090

834

937

Note: Given here is a maximum value of size “B”. It depends on a control system version.

Axial-piston pumps НК of variable capacity