Break-In Procedure - Nakanishi NR33-6000ATC-ESD Operation Manual

CAUTION
How to confirm the correct tightening or clamping of the Spindles in the holder : In case of use
・
a brushless motor Measure the current value of the CONTROLLER's power cord by the clamp
meter.
Fasten the holder so that the increase in the no-load current value (during rotation at the
maximum rotation speed) with the Spindle fastened is 20mA (for type 120V) / 10mA (for type 200V
/ 230V) or less, compared to the no-load current value (during rotation at the maximum rotation
speed) without fastening the Spindle. Do not over-tighten the Fastening Bolt. It may damage
Spindle's precision and shorten the life of the bearings.
The final responsibility for ensuring holder's safety for use in a given application is left to the
・
designer of the equipment in which NAKANISHI's Spindle is installed.
NAKANISHI offers Spindle with a wide variety of capabilities and specifications.
Please carefully check the Spindle's specifications against the requirements of your equipment
and verify suitability and safety of the Holder prior to initial use.

12 . BREAK-IN PROCEDURE

During transportation, storage or installation, the grease inside the bearings will settle. If the 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
Steps
Rotation Speed (min -1
Rotation Time（min）
Items to Check
1
) (rpm) 15,000
15
No Abnormal
Noises
2
30,000 40,000
10
The spindle housing temperature during the break-
in process should not exceed 30 degrees C (54
degrees F) above ambient temperature. Should
the spindle exceed this limit, rest the spindle
for at least 20 minutes and re-start the break
in procedure from the beginning. If the housing
temperature rises again and exceeds 30 degrees
C (54 degrees F) above ambient temperature,
check the spindle and motor for proper installation.
3 4
50,000
10 10
5
60,000
15
The spindle
housing
temperature
during the
break-in
process should
not exceed
30 degrees C
(54 degrees F)
above ambient
temperature.
9