
B-65272EN/04 FANUC AC SPINDLE MOTOR αi SERIES 5.ALLOWABLE RADIAL LOAD
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5 ALLOWABLE RADIAL LOAD
Use the motor output shaft below the allowable radial loads shown in
the table below.
Allowable radial load (kgf)
Model
At output shaft
end
At output shaft
center
α0.5/10000i
294N (30kgf) 323N (33kgf)
α1/10000i
392N (40kgf) 441N (45kgf)
α1.5/10000i
882N (90kgf) 980N (100kgf)
α2/10000i
882N (90kgf) 999N (102kgf)
α3/10000i
1470N (150kgf) 1607N (164kgf)
α6/10000i
1960N (200kgf) 2205N (225kgf)
α8/8000i
2940N (300kgf) 3371N (344kgf)
α12/7000i, α15/7000i
2940N (300kgf) 3410N (348kgf)
α18/7000i, α22/7000i
4410N (450kgf) 4988N (509kgf)
α30/6000i, α40/6000i
5390N (550kgf) 6134N (626kgf)
α50/4500i
1078N (1100 kgf) 1230N (1255 kgf)
α1/15000i, α1.5/15000i
α2/15000i
Direct connection to the spindle
α3/12000i
980N (100kgf) 1068N (109kgf)
α6/12000i
1470N (150kgf) 1656N (169kgf)
α8/10000i
1960N (200kgf) 2244N (229kgf)
α12/10000i, α15/10000i
2450N (250kgf) 2842N (290kgf)
α18/10000i, α22/10000i
2940N (300kgf) 3332N (340kgf)
NOTE
1 When using a belt, adjust the tension so the
allowable loads indicated above are not exceeded.
If an excessive load is applied, consider the use of
a support bearing on the machine side to maintain
the long-term reliability of the motor. (If an
excessive load is applied, it is possible that an
abnormal sound may occur.)
2 When the belt tension is maximized at a point
outside the output shaft end, the allowable loads
are less than those at the output shaft end.
3 If a thrust load is applied when a helical gear is
used, the shaft moves in the direction of the thrust.
So, as a general rule, never apply a thrust load.