5 Installation
−21−
Permissible overhung load and permissible thrust load
Make sure the overhung load and thrust load received by the motor (gearhead)
output shaft will not exceed the allowable values shown in the table below.
Note
If the overhung load or thrust load exceeds the specified allowable value,
repeated load applications may cause the bearing or output shaft of the motor
(gearhead) to undergo a fatigue failure.
Geared type, combination type parallel shaft gearhead
Distance from tip of gearhead
output shaft and permissible
overhung load [N (lb.)]
Unit model
∗
10 mm
(0.39 in.)
20 mm
(0.79 in.)
Permissible
thrust load
[N (lb.)]
BLH015K- 50 (11.2) − 30 (6.7)
BLH230KC-5 100 (22) 150 (33)
BLH230KC-10, 15, 20 150 (33) 200 (45)
BLH230KC-30, 50, 100, 200 200 (45) 300 (67)
40 (9)
BLH450KC-5 200 (45) 250 (56)
BLH450KC-10, 15, 20 300 (67) 350 (78)
BLH450KC-30, 50, 100, 200 450 (101) 550 (123)
100 (22)
BLH5100KC-5 300 (67) 400 (90)
BLH5100KC-10, 15, 20 400 (90) 500 (112)
BLH5100KC-30, 50, 100, 200 500 (112) 650 (146)
150 (33)
in the model names indicates a number representing the gear ratio (5, 10, 15, 20,
30, 50, or 100).
∗ For the lead wire type, “KC” of the unit model is replaced by “K” (except for BLH015
type).
Round shaft type
Distance from tip of motor
output shaft and
permissible overhung load
[N (lb.)]
Unit model
∗2
10 mm
(0.39 in.)
20 mm
(0.79 in.)
Permissible thrust load
[N (lb.)]
BLH015K-A 50 (11.2) −
BLH230KC-A 70 (15.7) 100 (22)
BLH450KC-A 120 (27) 140 (31)
BLH5100KC-A 160 (36) 170 (38)
Not to exceed one-half
the motor’s dead weight
∗1
∗1 Minimize the thrust load. If a thrust load must be applied, do not let it exceed one-half the
motor’s dead weight.
∗2 For the lead wire type, “KC” of the unit model is replaced by “K” (except for BLH015
type).