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Variable displacement pumps for closed circuit operation
All the controls used in the Series 02 are based on a load-independent control mechanism. No matter which control is used: identical commands always result in the same response in the machine. The sensitive and precise machine control makes work easier and increases productivity. Various customer system options for mechanical, hydraulic and electric input solutions are available. Further special regulating features like torque control and pressure cut-off are also available. The reliable control of the pump can easily be integrated into any kind of vehicle management control system.
Advantages
- compact design
- high power density
- dynamic response
- high reliability
- long service life
- noise-optimized
- precise and load-independent
Design characteristics
- axial piston pump in swashplate design for high pressure closed loop systems
- clockwise or counter clockwise rotation
- exact and rugged servo control devices (mechanical, hydraulic, electro-hydraulic)
- integrated high pressure relief valves with make-up function
- integrated low pressure relief valves for boost, control and cooler circuits
- replaceable cartridge filter
- SAE high pressure ports
- SAE mounting flange with ANSI or SAE spline shaft
- through shaft SAE A, B, B-B and C
- charge pressure pumps for internal and external suction, integrated cold start relief valve optional
- optional tandem and multiple pumps
Controls
- M1R mechanical lever
- H1 hydraulic pilot
- E1 electro-hydraulic
- E2 electro-hydraulic with enable function
- E5 electro-hydraulic, 3 postition
- CA speed related hydraulic mechanical with torque-/power limiter
Control Options
- power limiter
- pressure cut-off
Technical Data
| HPV | 55 | 75 | 105 | 135 | 165 | 210 | 280 | |
|---|---|---|---|---|---|---|---|---|
| Max. displacement | cc/rev | 54.7 | 75.9 | 105 | 135.7 | 165.6 | 210.1 | 281.9 |
| Max. operating speed | rpm | 3900 | 3400 | 3200 | 3000 | 2750 | 2300 | 2400 |
| Max. speed* | rpm | 4150 | 3600 | 3400 | 3200 | 2950 | 2500 | 2550 |
| Nominal pressure | bar | 450 | 450 | 450 | 450 | 450 | 450 | 450 |
| Max. pressure** | bar | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Max. housing pressure | bar | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| Torque | Nm | 374 | 519 | 719 | 929 | 1133 | 1438 | 1929 |
| Corner power (theor.) *** | kW | 153 | 185 | 241 | 292 | 326 | 246 | 485 |
| Weight (approx.) with H1 control, without oil**** | kg | 46 | 49 | 66 | 72 | 113 | 132 | 164 |
*highest transient speed, that can temporarily occur
**highest transient pressure, that can temporarily occur
***(Vmax x nmax x ∆p 430 bar)
****inclusive internal gear pump (size 55-135) or external gear pump (size 165-280)
**highest transient pressure, that can temporarily occur
***(Vmax x nmax x ∆p 430 bar)
****inclusive internal gear pump (size 55-135) or external gear pump (size 165-280)
Sectional View
- 1control device: modular design, precise and load-independent
- 2swash plate: hydrostatic bearing
- 3piston-slipper assembly: 21° swash angle
- 4housing: one-piece design for high rigidity
- 5valve plate housing: highly integrated
- 6two control pistons: servo-controlled swash plate
- 7power take-off: for mounting of additional pumps
- 8cylinder barrel: compact due to 21° technology
- 9high pressure relief valves: integrated charge function