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Examination before the need to clean the surface of the machine, and then remove the spindle bearing parts around. The oil seal is very fragile parts, in need careful disassembly, not excessive force, then check the oil seal and its surrounding carefully parts, if have shown adverse symptoms, be sure to replace the bad oil seals, will lead to bearing damage and strict equipment downtime.
Check the lubricant, with little lubricant friction in between two fingers, if the presence of pollutants, can be felt in the back of the hand, or coated with a thin layer of lubricant, and then sealed optical inspection.
The replacement of lubricants, machine tool spindle bearing lubrication oil in addition to the old oil, and then poured into the fresh oil and let the machine in low speed rotation for several minutes. Pollutants as far as possible to make the oil collecting residue, and then poured the oil, the oil in use before filtering.
1, grease selection: selection of oils are generally selected according to the machine tool spindle bearing speed, temperature, noise requirements and starting torque, the performance requirements of various oil well.
2, bearing seal type selection: the lubrication of the machine tool spindle bearings can be divided into oil and grease lubrication. Oil lubricated bearing selection form bearing, grease lubricated bearings are generally use dustproof cover or rubber seals. Dust cover is applicable to high temperature or use good parts, seal two kinds of sealed contact and non-contact seal, contact type sealing dustproof performance is good but the torque, non-contact seal starting torque is small, but good sealing properties of no contact.
3, the selection of bearing type: type of bearing is generally based on the use of supporting products and bear the load on the machine tool spindle bearing selection. If the actual load it must understand the user in accordance with the selected bearing, if the bearing is not up to the requirements, should as soon as possible re-election models, but unless special products in the choice of models generally do not have what problem.