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Geared torque motors
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Geared torque motors


SEW torque motors are AC squirrel-cage motors designed to operate with rated torque at a standstill (starting torque). They are equivalent to springs with an unlimited spring travel.

Geared torque motors move flaps, gates, or switches. They move press dies into die change position. In all these cases, they serve as a drive in which a stop position must be reached and held following a short movement. While under voltage, they can also have their speed matched temporarily by another drive and then continue running under their own force.


Supply voltages and enclosures for SEW torque motors correspond to those of SEW AC motors.

The electrical version enables the torque motor to continuously operate with the permitted starting torque in rating I irrespective of the starting frequency.

The attainable starting torque is tripled when the torque motors are operated with rating II. This operation is either only permitted for short intervals (operating mode S3/15% cdf) or continuously with forced cooling of the torque motors.

The dimensions of the MT/MV torque motors are identical to those of DT/DV AC motors of the same size (see also the "Gearmotors" catalog).

Torque gearmotors are assembled using a modular concept just like gearmotors. Since torque motors develop less torque in comparison to AC squirrel-cage motors of the same design due to thermal conditions, there is a greater range of possible combinations with gear units.

Torque motors 750 rpm 50 Hz

 
Rating I for continuous duty S1
Rating II for intermittent operation S3/15% cdf or continuous duty with forced cooling fan
Only for gear unit mounting
Type
Ma mot [Nm]
cos ϕA
Ia at 400 V ±10% [A]
Ma mot [Nm]
cos ϕA
Ia at 400 V ±10% [A]
RZ Ø [mm]
MT 71 D 8
0.4
0.77
0.20
1.2
0.77
0.60
10
MT 80 K 8
0.6
0.77
0.30
1.8
0.77
0.90
12
MT 80 N 8
0.8
0.75
0.31
2.4
0.75
0.93
12
MT 90 S 8
1.5
0.76
0.43
4.5
0.76
1.29
12
MT 100 LS 8
2.0
0.71
0.57
6.0
0.71
1.71
12
MT 100 L 8
2.5
0.70
0.66
7.5
0.70
1.98
12
MV 132 S 8
3.5
0.64
1.05
10.5
0.64
3.15
14
MV 160 M 8
5.0
0.53
2.0
15
0.53
6.0
22

Torque motors 900 rpm 60 Hz

 
Rating I for continuous duty S1
Rating II for intermittent operation S3/15% cdf or continuous duty with forced cooling fan
Only for gear unit mounting
Type
Ma mot [Nm]
cos ϕA
Ia at 460 V ±10% [A]
Ma mot [Nm]
cos ϕA
Ia at 460V ±10% [A]
RZ Ø [mm]
MT 71 D 8
0.4
0.75
0.22
1.2
0.75
0.66
10
MT 80 K 8
0.6
0.75
0.31
1.8
0.75
0.93
12
MT 80 N 8
0.8
0.71
0.33
2.4
0.71
0.99
12
MT 90 S 8
1.3
0.70
0.44
3.9
0.70
1.32
12
MT 100 LS 8
1.8
0.67
0.56
5.4
0.67
1.68
12
MT 100 L 8
2.3
0.65
0.68
6.9
0.65
2.04
12
MV 132 S 8
3.2
0.58
0.96
9.6
0.58
2.88
14
MV 160 M 8
4.5
0.48
2.15
13.5
0.48
6.45
22

 
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