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Piston pumps HPR series
pompy tłoczkowe LINDE HPR-165
category:
Piston pumps LINDE

Piston pumps HPR series

Circuit

open

Type

variable

Displacement [cc/rev]

55-165

Nominal pressure [bar]

420

Self-regulating pump for open-circuit operation

Current noise emission regulations are pushing manufacturers of mobile machinery to optimize noise levels. Since secondary remedial measures are often costly and less effective, LHY Powertrain prefers to tackle noise at its source. By optimally integrating additional volume directly at the commutation of the HPR-02 pump, LHY Powertrain has developed the SPU silencer. The innovative, adaptive SPU silencer reduces pressure pulsations in the control pump across the entire operating range – without any loss of power.

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Advantages

  • Optimal integration with Linde LSC control valves and the LinTronic system: Ensures precise and efficient flow management.
  • Energy savings through “flow on demand” control: The system adjusts the flow to current needs, minimizing energy consumption.
  • Dynamic response: Quick and precise adaptation to changing operating conditions.
  • Excellent suction properties even at nominal speeds: Guarantees reliable operation under various conditions.
  • Noise optimization across the entire operating range: Quiet operation without compromising performance.
  • Compact design: Space-saving while maintaining high efficiency.
  • High power density: Outstanding performance relative to size.
  • High reliability: Proven solutions ensuring long-term operation without failures.
  • Long service life: Durable components and robust construction extend operational lifespan.

Design Characteristics

  • Axial piston pump with a swashplate design: Designed for high-pressure systems in open circuits.
  • Ability to operate in clockwise or counterclockwise direction: Flexibility in installation and use.
  • Self-priming at high nominal speeds: Reliable operation even under demanding conditions.
  • Option for tank pressurization or swashplate angle reduction for high-speed applications: Optimized performance for various scenarios.
  • Adaptive SPU noise optimization: Effective suppression of pressure pulsations across the entire operating range.
  • Decompression fluid discharge through the pump housing: Ensures smooth operation on the suction side.
  • Precise and durable load sensing control: Available with or without swashplate position feedback.

Control Options

  • LP – Load Sensing with Pressure Cut-Off: Precise flow control with automatic cut-off upon reaching maximum pressure.
  • H1L – Load Sensing with Hydraulic Override of ΔpLS: Control with the option for manual override of the pressure differential.
  • E1L – Load Sensing with Electrical Override of ΔpLS: Electronic control with the option to override the pressure differential.
  • LEP – Load Sensing with Electrical Stroke Limiter and Pressure Cut-Off: Advanced control with dual safety features.
  • ETP – Electroproportional with Hyperbolic Power Limiter and Pressure Cut-Off: Real-time optimization of power and pressure.
  • TL2 – Load Sensing with Hyperbolic Power Limiter: Efficient power management within the system.
HPR 55 75 95 105 135 165 210 249 280 105D 125D 165D
Max. displacement cc/rev 55 75.9 94.7 105 135.7 163.6 210.1 249.9 281.9 210 2×125 2×165
Max operating speed* rpm 2700 2500 2500 2500 2350 2400 2100 2250² 2000 2450 2400 2100
Max. volume flow** l/min 148.5 189.8 237.5 246.8 312.1 392.6 441.2 563² 563.8 514.5 600.0 695.5
Nominal pressure bar 420 420 350 420 420 350 420 350 420 420 350 420
Max. pressure*** bar 500 500 420 500 500 420 500 420 500 500 420 500
Max. housing pressure bar 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Torque Nm 368 507 528 702 907 911 1404 1392 1884 1245 1393 1964
Corner power (theoretical)**** kW 104 132.8 138 172.7 218.5 229 308.8 328² 394.7 319.4 337 431.8
Weight (approx.) kg 39 39 44.5 50 65 74 116 125 165 96 113 177

* without tank pressurization
** theoretical data of a single unit without efficiency effects
*** highest transient pressure, that can temporarily occur
**** (Vmax x nmax x ∆p 420 bar)

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