Linde is a manufacturer of axial piston pumps for open and closed circuits. The company’s offerings include variable and self-regulating pumps. The products are suitable for a peak pressure of up to 500 bar in heavy-duty hydraulic applications.
Legal emission regulations force manufacturers of mobile machinery to optimize the noise emission of their products. Since secondary measures tend to be expensive and less efficient Linde Hydraulics prefers to fight the noise where it is generated: by optimally connecting an additional volume directly next to the commutation of the HPR-02 pump, Linde Hydraulics invented the SPU silencer. The adaptive SPU reduces pressure pulsations in the regulating pump over the entire range of operation – without loss of power.
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Features
Design characteristics
- axial piston pump in swashplate design for high-pressure open-circuit systems
- clockwise or counterclockwise rotation
- self-priming at high nominal speed
- tank pressurization or swash angle reduction for high-speed applications
- adaptive noise optimization SPU
- decompression fluid is discharged via pump housing to keep the suction side calm
- exact and robust load sensing controllers with or without swash plate position feedback
Product advantages
- optimum interaction with Linde LSC control valves and LinTronic
- energy saving operation by ‘flow on demand’-control
- dynamic response
- excellent suction up to rated speed
- noise optimization over the whole range of operation
- compact design
- high power density
- high reliability
- long working life
Technical Data
HPR-02 | 55 | 75 | 95 | 105 | 135 | 165 | 210 | 280 | 105D | 125D | 165D | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max. displacement | cc/rev | 55 | 75.9 | 95 | 105 | 135.7 | 163.6 | 210.1 | 281.9 | 210 | 250 | 331.2 |
Max. operating speed (without tank pressurization) | rpm | 2700 | 2500 | 2500 | 2500 | 2350 | 2400 | 2100 | 2000 | 2450 | 2400 | 2100 |
Max. oil flow* | l/min | 148.5 | 189.8 | 237.5 | 246.8 | 312.1 | 392.6 | 441.2 | 563.8 | 514.5 | 600.0 | 695.5 |
Nominal pressure | bar | 420 | 420 | 350 | 420 | 420 | 350 | 420 | 420 | 420 | 350 | 420 |
Max. pressure** | bar | 500 | 500 | 420 | 500 | 500 | 420 | 500 | 500 | 500 | 420 | 500 |
Torque (Δp=420 bar) | Nm | 368 | 507 | 529 | 702 | 907 | 911 | 1404 | 1884 | 1245 | 1245 | 1964 |
Corner power | kW | 104 | 132.8 | 138 | 172.7 | 218.5 | 229 | 308.8 | 394.7 | 319.4 | 337 | 431.8 |
Weight approx. (without oil) | kg | 39 | 39 | 44.5 | 50 | 65 | 74 | 116 | 165 | 96 | 113 | 177 |
* theoretical data of a single unit without efficiency effects ** highest transient pressure, that can temporarily occur |
Download Datasheet: Linde HPR-02 Self-regulating pumps for open circuit operation
Reference: linde-hydraulics.com
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