
B-65325EN/01 MOTOR MAINTENANCE 2.SPINDLE MOTOR MAINTENANCE
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2.3 ALLOWABLE RADIAL LOAD
(1) β
ββ
βi series
Use motor output axes under the allowable radial load listed below or
less:
Allowable radial load
Model
Output axis end Center of output axis
β3/10000i
882N (90kgf) 999N (102kgf)
β6/10000i
1470N (150kgf) 1607N (164kgf)
β8/8000i
1960N (200kgf) 2205N (225kgf)
β12/7000i
2940N (300kgf) 3371N (344kgf)
NOTE
1 When using a belt, adjust the tension of the belt so
that the allowable value listed above is not
exceeded.
If the machine tool is to run with the allowable value
exceeded, examine use of support bearings in the
machine tool so that its reliability can be maintained
for a long time. (If the allowable value is exceeded, it
is likely that noise may have occurred.)
2 When the belt tension center is positioned beyond
the end of an output axis, the allowable load
becomes smaller than that at the end of the output
axis.
3 If a load in the thrust direction is put on a helical
gear, the shaft shifts in the thrust direction. As a
rule, therefore, avoid such a load on the helical
gear.