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Maintenance of spindle

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Good lubrication is able to reduce the working temperature of the bearing and prolong the

service life. It should be noted in operation and use as follow:

At low speed, grease and oil circulation lubrication should be used;

At high speeds, oil mist and oil vapor lubrication are needed.


However, when using grease lubrication, the sealing amount of the spindle bearing is

usually 10% of the bearing space volume and it must not be filled at will, because too

much grease will aggravate the heating of the spindle. For oil circulating lubrication, the

spindle weighs that in the operation and use. It is necessary to check the spindle

oil tank every day to see whether the oil volume is sufficient, if the oil volume is not

enough, the lubricant should be added;

At the same time, it is necessary to pay attention to check whether the temperature

range of the lubricating oil is appropriate.


In order to ensure that the spindle has good lubrication, reduced friction and heat and at

the same time take away the heat from the spindle, a circulating lubrication system

is usually needed with a hydraulic pump is used to supply oil lubrication and an oil

temperature controller is used to control the oil temperature in the oil tank. CNC machine

tool spindle means excellent CNC machine tool spindle bearing is lubricated by grease

sealing, and can be used for 7~10 years every time grease is added. The new lubrication

and cooling method not only reduces the temperature rise of the bearing, but also

reduces the temperature difference between the inner and outer rings of the bearing,

so as to ensure the minimized thermal deformation of the spindle.