Construction Machinery
Excavators
Our parent compay, Kawasaki has been supplying hydraulic components to this market since the 1960’s when Hydraulic Excavators first became widely established. Since then we have been successively developing and manufacturing Hydraulic Pumps to provide the immense power source required by these earth moving machines.
Wipro Kawasaki Precision Machinery has also developed Hydraulic Motors to apply this power to enable the machines movement and various Control Valves to provide the operator with the precisefeel and control required to undertake a wide range of tasks from delicate soil grading to trenching, rock breaking and demolition.
As a total Hydraulic System engineering company, Wipro Kawasaki Precision Machinery is continually contributing to the development of these high tech machines.
Open circuit system grown in the excavator applications
The open circuit system that utilizes the variable displacement pump can be divided into two types of control system; one of which is called negative flow control system (negacon) and the other is called positive flow control system (posicon) depending on the pump flow control characteristic. Utilizing Kawasaki’s variable displacement pump and multiple control valve the superior controllability and the fuel saving can be achieved.
The open circuit system using the variable displacement pump are widely used on the construction machinery such as hydraulic excavators, crawler cranes, and wheel loaders. It is a highly efficient system that can realize the superior controllability under various working conditions such as precise grading operation or powerful digging operations.
Control system that achieves high efficiency and superior control performance
Utilization of high efficiency pump (K5V series) and the control valve with low pressure loss and superior control characteristic, futhermore utilization of electric proportional control into the system enable the whole control system to be highly efficient and the optimum machine performance.
Products for Excavator System
Pumps
| Model | Displacement (cm3) | Pressure (MPa) | Control Type |
|
|
63 – 280 | 34.3 |
|
 K3VL series |
28-200 | 32 |
|
 K7SP series |
36 x 2 | 30 |
|
Motors
| Model | Displacement (cm3) | Output Torque (Nm) | Speed (min-1) |
|
|
80 – 250 | 415 – 1310 | 2200 – 1520 |
Control Valves
| Model | Max. Pressure (MPa) | Max. Flow (L/min) | Max. No. of Sections |
|
|
35-40 | 240-450 (P-Port) 180-400 (Section) |
7-9 |
*LS margin pressure = 1.5 MPa
Pilot Control Valves
| Model | Max. Inlet Pressure (MPa) | Output Pressure (MPa) | Rated Flow (L/min) |
|
|
6.9 | 0～2.9 | 15-20 |
Contact
Please feel free to contact us if you need more information about our business or want to purchase our products.