6.2 Specifications and Ratings
6.2.4 Ratings of Servomotors with Gears
6-6
6.2.4
Ratings of Servomotors with Gears
*1.
The gear output torque is expressed by the following formula.
The gear efficiency depends on operating conditions such as the output torque, motor speed, and temperature.
The values in the table are typical values for the rated torque, rated motor speed, and a surrounding air tem-
perature of 25
°
C. They are reference values only.
*2.
Use the Servomotor at an effective load ratio of 85% or less. The values in the table take the effective load ratio
into consideration.
*3.
The rated motor speed calculated at the motor shaft is 2,000 min
-1
max.
*4.
The maximum motor speed calculated at the motor shaft is 4,500 min
-1
max.
Note: 1. The gears that are mounted to Yaskawa Servomotors have not been broken in.
Break in the Servomotor if necessary. First, operate the Servomotor at low speed with no load. If no prob-
lems occur, gradually increase the speed and load.
2. The no-load torque for a Servomotor with a Gear is high immediately after the Servomotor starts, and it
then decreases and becomes stable after a few minutes.
This is a common phenomenon caused by grease circulation in the gears and it does not indicate faulty
gears.
3. Other specifications are the same as those for Servomotors without Gears.
All models
Gear Mechanism
Protective Structure
Lost Motion [arc-min]
Planetary gear mechanism
Totally enclosed, self-cooled,
IP55 (except for shaft opening)
3 max.
Servomotor Model
SGM7P-
Servomotor
Gear Output
Rated
Output
[W]
Rated
Motor
Speed
[min
-1
]
Maxi-
mum
Motor
Speed
[min
-1
]
Rated
Torque
[N
m]
Instanta-
neous
Maxi-
mum
Torque
[N
m]
Gear
Ratio
Rated Torque/
Efficiency
*1
[N
m/%]
Instanta-
neous
Maxi-
mum
Torque
[N
m]
Rated
Motor
Speed
[min
-1
]
Maxi-
mum
Motor
Speed
[min
-1
]
01A
AH1
100
3000
6000
0.318
0.955
1/5
1.05/78
*2
4.30
600
1200
01A
AHB
1/11
2.52/72
9.30
273
545
01A
AHC
1/21
5.34/80
18.2
143
286
01A
AH7
1/33
6.82/65
27.0
91
182
02A
AH1
200
3000
6000
0.637
1.91
1/5
2.39/75
8.60 600
1200
02A
AHB
1/11
5.74/82
19.4
273
545
02A
AHC
1/21
10.2/76
35.9 143
286
02A
AH7
1/33
17.0/81
57.3
91
182
04A
AH1
400
3000
6000
1.27
3.82
1/5
5.33/84
17.8 600
1200
04A
AHB
1/11
11.5/82
38.3
273
545
04A
AHC
1/21
22.9/86
74.4 143
286
04A
AH7
1/33
34.0/81
114.6
91
182
08A
AH1
750
3000
6000
2.39
7.16
1/5
10.0/84
32.8 600
1200
08A
AHB
1/11
23.1/88
73.6
273
545
08A
AHC
1/21
42.1/84
138.0
143
286
08A
AH7
1/33
69.3/88
220
91
182
15A
AH1
1500
3000
6000
4.77
14.3
1/5
19.1/80
64.8 600
1200
15A
AHB
1/11
45.6/87
146
273
545
15A
AHC
1/21
87.1/87
278
95
*3
214
*4
15A
AH7
1/33
142/90
443
60
*3
136
*4
The SERVOPACK speed control range is 1:5,000. If you use Servomotors at extremely low speeds
(0.02 min
-1
or lower at the gear output shaft), if you use Servomotors with a one-pulse feed refer-
ence for extended periods, or under some other operating conditions, the gear bearing lubrication
may be insufficient. That may cause deterioration of the bearing or increase the load ratio.
Contact your Yaskawa representative if you use a Servomotor under these conditions.
Gear output torque = Servomotor output torque
×
×
Efficiency
1
Gear ratio
Important
