Piston pumps K-02 series
Circuit
closed
Type
variable
Displacement [cc/rev]
55-105
Nominal pressure [bar]
450
Smooth Control for Optimal Performance
Precise transmission control enables easy operation without interrupting traction force. From standstill to maximum speed – seamlessly. Together with its customers, LHY Powertrain is setting new standards in technology. Advanced modular drive technology, implemented in hydrostatic variators for variable speed transmissions, forms the heart of power-split gearboxes. Compact units with hollow shafts are available for installation in conventional gearboxes in smaller machines. These compact units are used as fully hydrostatic systems with PTO drives. With customer-tailored solutions, LHY Powertrain supports the transition from power shift technology to continuously variable transmission (CVT) technology.
Advantages
- Precise Volumetric Flow Control: Accurate management of performance.
- Smooth Gear Shifting Without Loss of Traction: Continuous operation without interruptions.
- Dynamic Response: Quick adaptation to changing conditions.
- Standstill Control: Stable operation even at a stop.
- Gentle Start-Up: Smooth and precise initiation of operation.
- Precise Creep Speed: Ideal for demanding tasks.
- High Efficiency: Optimal energy utilization.
- Low Fuel Consumption Across the Entire Operating Range: Reduced operational costs.
- Compact Design: Space-saving and easy integration.
- High Reliability: Minimized downtime and failures.
- Long Service Life: Durability and reduced maintenance costs.
Design Characteristics
- Variable Displacement Pump HPV-02 and Fixed Displacement Motor HMF-02: Combined in a single back-to-back unit.
- Inline Configuration: Compact and efficient design.
- Integrated High-Pressure Relief Valves: Featuring charge and discharge functions.
- External Power Supply: Flexibility in system integration.
- Electric or Hydraulic Pump Control: Tailored to various application requirements.
Gearbox-Mounted Version
- Optimized for Power-Split Transmissions: Ideal for advanced drive systems.
- Custom Housing Geometry: Precise adaptation to application requirements.
- Motor Power 120–165 kW: Performance tailored for medium and large machines.
Gearbox Expansion Version
- Fully Hydrostatic Unit: Designed for mounting on conventional gearboxes.
- PTO (Power Take-Off) Version: Versatile application across various machines.
- Motor Power up to 45 kW: Compact and efficient solution for smaller applications.
| K-02 | 55/55*** | 75/75*** | 105/105*** | |
|---|---|---|---|---|
| Max. displacement | cc/rev | 55/55 | 75/75 | 105/105 |
| Max. operating speed | rpm | 3900 | 3400 | 3200 |
| Max. speed* | rpm | 4150 | 3600 | 3400 |
| Nominal pressure | bar | 450 | 450 | 450 |
| Max. pressure** | bar | 500 | 500 | 500 |
| Max. housing pressure | bar | 2.5 | 2.5 | 2.5 |
| Torque ( p=430 bar; charge press.=20 bar)**** | Nm | 374 | 519 | 719 |
| Corner power | kW | 153 | 185 | 241 |
*highest transient speed, that can temporarily occur
**highest transient pressure, that can temporarily occur
***(Nominal size variable displacement unit/ Nominal size fixed displacement unit)
****(Vmax x nmax x ∆p 430 bar)
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