Small Bearing 4T-33110,Big Bearing T7FC055 For Rexroth A8V0140 Piston Pump

Detail of Small Bearing 4T-33110, Big Bearing T7FC055 For Rexroth A8V0140 Piston Pump

The important part of the plunger pump is the bearing. If there is play in the bearing, the normal clearance of the three pairs of friction pairs inside the hydraulic pump cannot be guaranteed. At the same time, the thickness of the hydrostatic bearing oil film of each friction pair will be destroyed, reducing the use of the plunger pump bearing. life. According to the information provided by the hydraulic pump manufacturer, the average service life of the bearing is 10000h, and it is necessary to replace the new port if this value is exceeded. Bearings removed can not be detected without professional testing equipment, and can only be visually inspected. If scratches or discoloration are found on the roller surface, they must be replaced.

When replacing bearings, attention should be paid to the English letters and models of the original bearings. Most of the plunger pump bearings use large load capacity bearings. Purchase the original manufacturer and original specifications. If you replace another brand, you should consult a person who has experience with the bearing to look up the table and exchange, the purpose is to maintain the accuracy level and load capacity of the bearing.

Axial plunger pumps can also use frequency converters to save electrical energy. In the actual production process, axial plunger pumps are usually operated under pressure or flow to adjust the operating state. When the actual pressure is greater than the required pressure, it is adjusted through the relief valve to keep its operating pressure stable and let the relief valve release the excess. The motor has been running at full speed repeatedly, and the power consumption remains unchanged.

The valve plate has two forms: plane flow distribution and spherical flow distribution. The friction pair of spherical flow distribution is repaired by grinding when the scratches on the flow distribution surface of the cylinder are relatively shallow: when the groove on the flow distribution surface of the cylinder is deep, the groove should be filled with "surface engineering technology" before grinding Do not blindly grind to prevent the copper layer from thinning or oil leakage from the steel base.

When using overflow to adjust the pressure and flow, some of the excess overflows back to the original system, resulting in the useless power of the plunger pump and low operating efficiency. If a Chuangjie energy-saving inverter is used, the overflow valve can be set Closed, through the energy-saving inverter itself automatically adjusts the operating pressure to maintain the stability of the operating pressure, and automatically tracks the pressure of the device. Realize automatic control, thereby saving energy consumption. The biggest advantage of this adjustment method is that it can reduce the operating energy consumption of the axial piston pump, and the power saving effect can reach more than 30%.

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