Self-regulating pump for open loop operation.

optimum utilisation of power swash plate hydrostatic bearing piston-slipper assembly one-piece design for high rigidity valve plate housing highly integrated servo-controlled swash plate power take-off for mounting of additional pumps cylinder barrel suction channel optimized suction capacity without tank pressurization reduced pressure pulsation over the entire operating range Design characteristics >> high pressure axial piston pump in swash plate design for open loop systems >> clockwise or counter clockwise rotation >> self-priming at high nominal speed >> higher rotating speed by tank pressurization...

Linde Hydraulics product range Find the right products for your application. Product range Linde product name Valve technology Self-regulating pump Variable pump Variable motor Regulating motor Fixed motor Electronic control unit Peripheral eguipment open loop operation closed loop operation closed and open loop operation closed and open loop operation closed and open loop operation open loop operation closed and open loop operation open loop operation open loop operation closed and open loop operation closed and open loop operation Operational parameters >> Life time recommendations 6 >> Tank...

General technical data. Overview of technical data *) higher rotating speed by tank pressurization or swash angle reduction. See «Suction speed>> **) theoretical data of a single unit without efficiency effects The maximum input and maximum PTO torgue allows to form multiple units. One of the first two pumps in such an assembly can thereby operate at maximum power, while the other can operate at continuous power. The PTO at the second pump then offers 30% of a single pump's continuous power rating. Example for HPR 135-02 Maximum input torgue = 907 Nm + 540 Nm + 540*0.3 Nm = 1609 Nm Standard Linde-name...

General technical data. Selection diagram Suction speeds

Operational parameters. Life time recommendations Life time recommendations Linde high pressure units are designed for excellent reliability and long service life. The actual service life of a hydraulic unit is determined by numerous factors. It can be extended significantly through proper maintenance of the hydraulic system and by using high-guality hydraulic fluid. Beneficial conditions for long service life >> Speed lower continuous maximum speed >> Operating pressure less than 300 bar Ap on average Max. pressure only at reduced displacement >> Power continuous power or lower >> Purity of...

Operational parameters. Tank connection, filtration, mounting orientation Tank connection The leakage and decompression oil generated during pump operation is drained from the rotating group into the pump housing. Excessive housing pressure must be avoided through suitably dimensioned piping between the housing and the tank. Filtration High purity oil can extend the service time of the hydraulic system significantly. In order to guarantee long-term proper function and high efficiency of the hydraulic pumps the purity of the pressure fluid must comply with the following criteria. >> For reliable...

Operational parameters. Pressure fluids In order to ensure the functional performance and high efficiency of the hydraulic pumps the viscosity and purity of the operating fluid should meet the different operational reguirements. Linde recommends using only hydraulic fluids which are confirmed by the manufacturer as suitable for use in high pressure hydraulic installations or approved by the original eguipment manufacturer. Permitted pressure fluids >> Biodegradable fluids in accordance with ISO 15380 on reguest >> Other pressure fluids on reguest Linde offers an oil testing service in accordance...

Linde LSC-System. The Linde Synchron Control System (LSC-System) for open loop hydraulic circuits enables demand-orientated pump volume control based on load sensing technology (LS technology). A LSC-System compensates the effect of varying loads, varying numbers of actuators and different load levels at different actuators. This happens automatically, thereby making machine operation more convenient since, unlike in other systems, continuous corrective action is no longer required. The LSC-System enables high-efficiency hydraulic systems to be realized that are strictly orientated to the machine...

Noise reduction. SPU silencer In hydraulic systems pressure pulsations can lead to noise emission. These pressure pulsations are a result of the inherent nonuniformity of the volume flow in rotary piston pumps. In open loop hydraulic circuits pressure pulsations primarily originate from within the hydraulic pump during the compression stroke, i.e. when a piston coming from the low-pressure side (suction side) enters the high-pressure side, where it is suddenly subjected to high pressure. The higher the pump speed and the pressure difference between the low-pressure and high-pressure side, the...

Noise reduction. SPU silencer SPU silencer function HPR-02 with SPU >> Reduction of pressure pulsations over the entire operating range >> Reduction of noise emission by approx. 50 % >> Reduction of volume flow fluctuations >> Ready for use immediately no maintenance reguired >> Simple and rugged design >> Minimum increase in weight and volume The following diagrams illustrate the immediate effect of pulsation level reduction via SPU on the sound pressure level and there- fore the perceived noise emission. Comparison of sound pressure levels for a HPR 75-02 pump with and without SPU Speed [rpnY...

Torque transmission. Depending on the selected components, different torques may be transferred. Please ensure that the load transfer components such as mounting flange, PTO-through shaft and additional pumps are designed adequately. Our sales engineers will be pleased to provide design advice. This shows the input side (A) and PTO- / output side (B) of a HPR-02 pump. The information on the following pages refers to >> mounting flange and drive shaft (A) » PTO flange and through shaft (B) Bolt hole diameter Bolt hole length