How should the Fugaku piston pump on CNC machines be maintained?

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Niigata piston pumps require maintenance; in fact, it’s not just Niigata piston pumps – other pumps are the same in this regard. Today, let’s talk about how to maintain the Fugaku piston pumps used in CNC machines. Usage guidelines for oil in the Funai hydraulic pump stations: Use anti-wear hydraulic oil ISO-L-HL46 in summer, and anti-wear hydraulic oil ISO-L-HL32 in winter; the oil should be replaced every 6 months (with spring and autumn as the dividing points). When the climate enters summer, it is a time when problems such as excessively high oil temperature occur frequently in the Funabashi hydraulic pump stations (especially during hot summer days). The reasons for the problems are as follows: During operation in winter, since many users operate in environments with low temperatures, this increases the viscosity of the oil, resulting in poor lubrication of the pump and causing slight wear on it. Additionally, during half a year of use, certain impurities accumulate within the hydraulic pipelines; as the temperature rises and the fluidity of the oil increases, these impurities increase in quantity and flow back to the pump station, leading to clogging of the filters. When the particle size of impurities in the hydraulic oil is between 10um and 15um, it can damage the plunger pump and cause the oil temperature to rise. Therefore, we advise all users to start taking measures to protect and maintain their Niigata hydraulic pumps at this point: use new oil of qualified quality (reprocessed oil must not be used), and clean the hydraulic oil tank thoroughly. The specific process is as follows: 1. Drain the oil from the Niigata hydraulic pump station, then remove the large circular cover plate located next to it. Next, clean the interior of the oil tank using cleaning oil, and wipe it clean with a cloth (it is especially important to remove all impurities that have settled at the bottom). 2. Mix an appropriate amount of flour with water to form a dough, then place this dough into the oil tank and rub it around every part of the tank by hand; the goal is to incorporate any remaining particles or impurities into the dough, thereby thoroughly cleaning the oil tank of all impurities. 3. Remove the filter from the pump station and take out the filter element; soak it in gasoline for 30 minutes before cleaning it by vibrating or shaking it. Repeat this cleaning process until no impurities are visible. Finally, use **blowing to clean it (if it cannot be cleaned, the filter must be replaced). After that, reinstall the components that were removed, and fill the Niigata hydraulic pump station with new oil so that it can be used (before operation, the pump must be filled with oil through the filling port before being started up). We ask all users to carry out maintenance on the Niigata hydraulic pump stations following the procedures outlined above, in order to prevent malfunctions that could affect your company’s production.