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* If there is difference in the measurement, adjust the Brushless Motor Spindle centerline. With the
Brushless Motor Spindle installed in the machining center's main spindle, use a dial gauge on
the test pin originally provided in the collet. Slightly loosen the 6 bolts that hold the taper housing
together, then slightly and tap the spindle to reposition the X - Y concentricity. Rotate the machine's
main spindle by hand to verify the concentricity. Carefully re-tighten the 6 bolts that were previously
loosened (Fig. 23).
Dial gauge
Mounting Bolt
(6pcs.)
Machining center's
main spindle
Fig. 23
During transportation, storage or installation, the grease inside the bearings will settle. If the Brushless
Motor Spindle is suddenly run at high-speed, the grease will be ejected from the bearings, causing
excessive heat that will cause bearing damage.
After installation, repair, initial operation, or long periods of non operation, please follow the break-in
procedure detailed in Table. 2.
Table. 2
BREAK-IN PROCEDURE
12.
Steps
1
2
3
4
5
6
Rotation Speed
(min
-1
) (rpm)
15,000
30,000
40,000
50,000
60,000
80,000
Rotation Time (min)
15
10
10
10
10
10
Items to Check
No
Abnormal
Noises.
The Brushless Motor Spindle housing
temperature during the break-in process
should not exceed 20 degrees C (36 degrees
F) above ambient temperature. Should the
spindle exceed this limit, rest the Brushless
Motor Spindle for at least 20 minutes and
re-start the break in procedure from the
beginning. If the housing temperature
rises again and exceeds 20 degrees C (36
degrees F) above ambient temperature,
check the Brushless Motor Spindle for proper
installation.
The Brushless
Motor Spindle
housing
temperature
during the break-in
process should not
exceed 25 degrees
C (45 degrees F)
above ambient
temperature.
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