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13.
BREAK-IN PROCEDURE
CAUTION
Always apply cooling air 0.2 - 0.35 MPa (29 - 50.7 psi) first, and then supply the coolant or oil mist
before initiating the " BREAK-IN PROCEDURE ".
If using the Brushless Motor Spindle without supplying sufficient cooling air pressure, coolant or oil
mist, will cause wear to the internal components, abnormal noise, abnormal heat generation and oil
leaks in the Brushless Motor Spindle.
During transportation, storage or installation, the grease inside the bearings will settle. If the Brushless Motor Spindl
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. 3.
Table. 3
Steps
BMS-4040-MQL series
Rotation Speed (min
-1
) (rpm)
BMS-4020-MQL series
Rotation Speed (min
-1
) (rpm)
Rotation Time (min)
Items to Check
1
10,000
5,000
15
No Abnormal
The Brushless Motor Spindle housing
Noises.
temperature during the break-in process
should not exceed 25 degrees C (36 degrees
F) above ambient temperature. Should the
Brushless Motor 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 25 degrees C (36
degrees F) above ambient temperature,
check the Brushless Motor Spindle for proper
installation.
2
3
20,000
30,000
10,000
15,000
10
10
4
40,000
20,000
15
The Brushless
Motor Spindle
housing
temperature
during the break-
in process should
not exceed
25 degrees C
(36 degrees F)
above ambient
temperature.
37
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