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3.11 ELectric Equipment
3.11.1 Motor
Spindle motor is equipped with IP . Therefore, no special care in required. Have
qualifi ed technician check and clean it every six months is OK. Other motors
should be checked annually.
Spindle speed for 2500 r.p.m.all the bearings in headstock by force lubrication.
Spindle speed for 3500 r.p.m.,spindle bearing is already greased before shipping
grease amount is able to support 8-10 hours of daily operation up tow years.
Still, it is recommended to check it annually by qualifi ed mechanic, the bearing
in other shaft of headstock by force lubrication.
3.11.2 Control Units
No special care is required. Cleaning CRT and key board by using a none
detergent soap.
3.11.3 Wire Connectors
Check them annually, and tighten if necessary.
3 11.4 Simple trouble shooting
Description
Lubricant level down to
bottom while spindle is
runnmg
Rails on bed tum black
Cylindrical machined
into conical shape
Inaccurate machining
between two centers
Step appear on spherical
workpiece surface
Too much temperature
rise during spindle
running
Possible Cause
Oil insuffi cient
Pump path clogged
Automatic lubrication
system out of lubricant
Inappropriate oil proper
ties
Oil tube clogged
Spindle head slick
Poor accuracy on centers
Inaccurate backlash
compensation
Invalid greasing
-43-
Repair Method
Add oil into headstock
Remove the object that
clogs the pump outlet
Add lubricant
Immediately replace the
oil
Replace tube or clear the
clogged object
Please refer to Chapter
3.10.1 to adjust the
accuracy
Please refer to Chapter
3.10.6 to adjust the
accuracy
Please refer to Chapter
backlash Offset and
adjustment
Check if there is oil
leaking from the oil
gauge
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