Noise has become a major element in reflecting the quality of modern construction machinery. In the construction machinery, in addition to the engine , the hydraulic components are also the main factors causing noise.

Linde Hydraulics found through research that open self-adjusting hydraulic pumps generate a lot of noise during operation. To this end, Linde Hydraulics conducted an in-depth study and developed the SPU silencer on the 02 series open hydraulic pump. The SPU can significantly reduce noise without losing energy.

Compared with the traditional self-adjusting hydraulic pump, the Linde 02 series hydraulic pump can reduce 70% flow and pressure pulsation during the whole operation regardless of changes in speed, pressure and temperature. Therefore, the noise is controlled at the source, which makes the entire system run quieter. No matter if you are in the cab or in the surrounding environment, you can obviously feel the noise reduction.

SPU silencing technology not only has obvious advantages in environmental protection, but also can save customers the cost of installing noise reduction equipment. After all, once the equipment is designed, it is difficult to be modified. Of course, the SPU has other advantages, such as inefficient loss, simple structure for maintenance, almost no increase in the weight and volume of the entire pump, and so on.

The Linde Hydraulic HPR-02 Series is an open-type high-pressure piston pump with a swash plate design. At high speeds, the HPR-02 Series has a strong automatic suction capability and can achieve higher speeds by increasing the tank pressure or by changing the swash plate angle. The HPR-02 series products have load-sensitive systems with precise control and stable performance. By controlling the pump with demand flow, energy can be saved.

The SPU silencer is suitable for all HPR-02 series products of Linde Hydraulics, 55, 75, 105, 135, 165, 210, 280, 105D, 125D and 165D. The model number is the maximum displacement in cm3/rev.

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