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6. Maintenance
1
、
When the thermal protection and short-circuit protection of the
inverter are continuously activated, check that the fault may come from
the motor, or too low setting values on overloading or protection device.
Only when the fault is cleared, the inverter can be operated.
2
、
The high-speed spindle with grease lubrication should keep in
good lubrication during operation. Typically, the lubricant should be
supplied or replaced after the spindle has been working for 2000 hours.
During operation, when it’s found that the bearing is overheated or
deteriorated, also replace the lubricant timely.
3
、
When replacing the lubricant, clear the old and clean the bearing
and the cover with gasoline of grade above 95≠ for three times or more.
After the cleaned bearing is completely dried, fill up the cavity between
its inner ring and outer ring with high-speed & high-temperature lubricant.
The filling amount covers 1/2 or 1/3 of the cavity.
4
、
For the high-speed spindle, angular contact bearings are mostly
used. During assembly, the bearing modes and positions should remain its
original. Otherwise, the bearing lifetime will be shortened.
5
、
When the bearing ends its life, the spindle vibration and noise will
increase significantly. It’s time to replace the bearings. During
replacement, pay attention to the matching between the bearing and the
shaft & holes. To ensure the assembly quality and accuracy, select the
bearing within the same type.
6
、
When replacing the spindle coil, take notes of the mode, size,
turns number, wire gauge, etc. of original coil. Once some data is lost,
inquire the manufacturer. If changing the designed coil at random, one or
some performances of the motor spindle will deteriorate. The spindle can
not be used at all.
7
、
Bearing type
