Lubricating hydraulic system UHWP400 was manufactured by PONAR Wadowice to provide lubrication for bearings of a lifting machine of a mining shaft. The system was equipped in two pump assemblies with screw pumps. One pump assembly is an emergency system, which allows to switch itself in emergency situations and to provide continuous operation.
Additional function of the system is cooling of the hydraulic fluid by the in-built heat exchanger. The cooler is powered by an independent pump assembly, which is also doubled to provide continuous work. The system was equipped in additional oil heaters for keeping the proper temperature of the hydraulic fluid. The system has an electrical box and a control system. PONAR Wadowice designed, manufactured and supplied the lubrica-tion system, and also connect it to the final installation.
technical parameters of hydraulic system
| nominal capacity of the tank | 550 l | cooling system pump | gear | type of hydraulic fluid | gear mineral oil |
| type of the supply pump | screw | pump capacity | 30 dm3/min | optimal viscosity of the fluid | 150 mm2/s |
| supply pump capacity | 75 dm3/rev. | screw pump electric motor power | HMA2 80 1-4; IMB5; IE3 | filtration | 25 µm |
| release valve pressure | 10 bar | electric motor supply voltage 2 | 400 V – 50 Hz | optimal oil temperature range | 15÷40 °C |
| electric motor of the screw pump | HMA2 80 1-4; IMB5 | elektric motor power | 0,55 kW | allowable oil temperature range | 10÷70 °C |
| elektric motor supply voltage 1 | 400 V – 50 Hz | speed of electric motor | 1370 rev./min | ambient temperature range | -20÷35 °C |
| electric motor power | 3,0 kW | supply voltage of oil heater | 400 V – 50 Hz | maximum noise level | 85 dB(A) |
| speed of electric motor | 2890 rev./min | cooler motor supply voltage | 230/400 V – 50 Hz |
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