3 Specifications and Dimensional Drawings
3.3.3 SGMGH Servomotors (1500min
-1
) With Low-backlash Gears
3-24
* 1. The maximum input motor speed of the gears is 4000
min
-1
.
* 2. Output torque and motor speed produce the following trends in efficiency. Values in the table are at
the rated motor speed.
Note: 1. For the shaft center allowable radial load, refer to the servomotor dimensional drawing.
2. The no-load torque for a servomotor with gears is high immediately after the servomotor starts,
and it then decreases and becomes stable a few minutes later. This is a common phenomenon
caused by grease being circulated in the gear and not by a faulty gear.
20AAL14
1.8
1500
11.5
(102)
1/5
46.0/80
(407/80)
115/80
(1020/80)
300 600
41.9
(37.1)
10.2
(9.03)
20AAL24
1/9
82.8/80
(733/80)
207/80
(1830/80)
167 334
39.5
(35.0)
7.80
(6.90)
20AAL54
1/20
184/80
(1630/80)
459/80
(4060/80)
75 150
51.9
(45.9)
20.2
(17.9)
20AAL74
1/29
267/80
(2360/80)
666/80
(5900/80)
51 102
45.1
(39.9)
13.4
(11.9)
30AAL14
2.9
18.6
(165)
1/5
74.4/80
(659/80)
182/80
(1610/80)
300 600
66.4
(58.8)
20.4
(18.1)
30AAL24
1/9
134/80
(1190/80)
328/80
(2900/80)
167 334
58.5
(51.8)
12.5
(11.1)
30AAL54
1/20
298/80
(2640/80)
730/80
(6460/80)
75 150
66.2
(58.6)
20.2
(17.9)
44AAL14
4.4
28.4
(251)
1/5
114/80
(1010/80)
284/80
(2510/80)
300 600
87.9
(77.8)
20.4
(18.1)
44AAL24
1/9
204/80
(1810/80)
512/80
(4530/80)
167 334
80.0
(70.8)
12.5
(11.1)
(Cont’d)
Servomotor
Model
SGMGH-
Servomotor Gear Output
Moment of Inertia J
×10
-4
kg·m
2
(×10
-3
lb·in·s
2
)
Out-
put
W
Rated
Speed
min
-1
Rated
Torque
Nxm
(lbxin)
Gear
Ratio
Rated
Torque/
Efficiency
∗2
N·m/%
(lb·in/%)
Instanta-
neous
Peak
Torque/
Effective
N·m/%
(lb·in/%)
Rated
Speed
min
-1
Max.
Speed
∗1
min
-1
Motor +
Gears
Gears
Output torque
Efficiency
Efficiency
Output torque
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