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Automatic CNC lathe workbench spindle bearing hydraulic pump failure
From:Taian Haishu Machinery Co.,Ltd. Updatetime:2018-11-9 14:49:14 Views:
The automatic CNC lathe runs 24 hours a day, and the hydraulic pump of the workbench does not stop working. After a long time, the hydraulic pump will inevitably cause certain wear.

Automatic CNC lathe workbench spindle bearing hydraulic pump failure
The automatic CNC lathe runs 24 hours a day, and the hydraulic pump of the workbench does not stop working. After a long time, the hydraulic pump will inevitably cause certain wear. The pump station includes: 0.75kW AC motor, 1 CB-B4 hydraulic pump, 1 Y-25 relief valve, 1 check valve and 2 filters, and the output oil pressure is 1MPa. However, if a fault occurs, the cause of the fault must be analyzed, otherwise a lot of detours will be taken.
(1) The hydraulic pump has no lubricating oil output. Analysis of the hydraulic pump without lubricating oil output has the following points: 1 The two coupling keys in the coupling are damaged, and the hydraulic pump motor is disconnected from the hydraulic pump. 2 The relief valve is not adjustable and the valve is blocked. 3 The hydraulic pump has airflow output, and the oil suction pipe and the connecting copper pipe joint are cracked. 4 The oil suction filter is clogged. 5 The hydraulic pump is damaged.
(2) Hydraulic pump vibration. Analysis of the hydraulic pump vibration has the following points: 1 due to the hard connection of the hydraulic pump and the motor, the coupling wear or the new coupling processing accuracy is not enough, beyond the allowable range. 2 fixed hydraulic pump motor end cover bearing outer ring clearance is large, due to wear or installation gaps. 3 When the motor and hydraulic pump are installed, the positioning accuracy is reduced and the center of gravity is different. 4 The inner bore of the coupling is enlarged due to wear. 5 Hydraulic pump motor bearing damage. 6 The hydraulic pump is damaged.
Once the coupling is not accurate enough, causing the hydraulic pump to vibrate; once the fixed hydraulic pump motor end cover bearing outer ring clearance is large, the hydraulic pump vibration caused by wear or installation gap.

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Taian Haishu Machinery Co., Ltd.
Address:Zhouwangzhuang Village, Shankou Town Taian City Shandong Province China
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