Datasheet
56 mm sq. (2.20 inch sq.)
1.8°/step
RoHS
Bipolar winding, Lead wire type
Unipolar winding, Lead wire type▶p. 68
Bipolar winding, Lead wire type
Model number
Holding torque
at 2-phase
energization
Rated
current
Wiring
resistance
Winding
inductance
Rotor inertia
Mass
(Weight)
Motor
length
(L)
Shaft
diameter
(D)
Dcut
thickness
(T)
Single shaft Dual shaft
[N·m (oz·in)
min.]
A/phase
Ω /phase mH/phase
[
×
10
-4
kg·m
2
(oz·in
2
)]
[kg (Ibs)]
mm
(in)
mm (in) mm (in)
103H7121-5640 103H7121-5610 0.55 (77.9) 1 4.3 14.5 0.1 (0.55) 0.47 (1.04)
41.8
(1.65)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7121-5740 103H7121-5710 0.55 (77.9) 2 1.1 3.7 0.1 (0.55) 0.47 (1.04)
41.8
(1.65)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7121-5840 103H7121-5810 0.55 (77.9) 3 0.54 1.74 0.1 (0.55) 0.47 (1.04)
41.8
(1.65)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7123-5640 103H7123-5610 1.0 (141.6) 1 5.7 29.4 0.21 (1.15) 0.65 (1.43)
53.8
(2.12)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7123-5740 103H7123-5710 1.0 (141.6) 2 1.5 7.5 0.21 (1.15) 0.65 (1.43)
53.8
(2.12)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7123-5840 103H7123-5810 1.0 (141.6) 3 0.7 3.5 0.21 (1.15) 0.65 (1.43)
53.8
(2.12)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7126-5640 103H7126-5610 1.6 (226.6) 1 7.7 34.6 0.36 (1.97) 0.98 (2.16)
75.8
(2.98)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7126-5740 103H7126-5710 1.6 (226.6) 2 2 9.1 0.36 (1.97) 0.98 (2.16)
75.8
(2.98)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7126-5840 103H7126-5810 1.6 (226.6) 3 0.94 4 0.36 (1.97) 0.98 (2.16)
75.8
(2.98)
φ 6.35
(
φ 0.25)
5.8
(0.23)
103H7128-5640 103H7128-5610 2.0 (283.2) 1 8.9 40.1 0.49 (2.68) 1.3 (2.87)
94.8
(3.73)
φ 8
(
φ 0.31)
7.5
(0.30)
103H7128-5740 103H7128-5710 2.0 (283.2) 2 2.3 10.4 0.49 (2.68) 1.3 (2.87)
94.8
(3.73)
φ 8
(
φ 0.31)
7.5
(0.30)
103H7128-5840 103H7128-5810 2.0 (283.2) 3 1.03 4.3 0.49 (2.68) 1.3 (2.87)
94.8
(3.73)
φ 8
(
φ 0.31)
7.5
(0.30)
Allowable Load, Rotation Direction▶p. 87 General Speci cations▶p. 88
Data is measured under the trial conditions of SANYO DENKI. Driving torque may vary according to actual machine precision.
Customizing
Hollow
Shaft modi cation
Decelerator
Encoder
Varies depending on the model number
and quantity. Contact us for details.
■
Characteristics diagram
103H7121-5640
103H7121-5610
Torque (N·m)
0.1 1 10 100
10002000 3000 5000100
0.2
0.4
0.6
0.8
1.0
0
Pulse rate (kpulse/s)
Number of rotations (min
−1
)
fs
0
Torque (oz·in)
140
120
100
80
60
40
20
Pull-out torque at JL
103H7121-5740
103H7121-5710
Torque (N·m)
0.1 1 10 100
1000 2000 3000 5000100
0.2
0.4
0.6
0.8
1.0
0
Pulse rate (kpulse/s)
Number of rotations (min
−1
)
fs
0
Torque (oz·in)
140
120
100
80
60
40
20
Pull-out torque at JL
103H7121-5840
103H7121-5810
Torque (N·m)
0.1 1 10 100
1000 20003000 5000100
0.2
0.4
0.6
0.8
1.0
0
Pulse rate (kpulse/s)
Number of rotations (min
−1
)
fs
0
Torque (oz·in)
140
120
100
80
60
40
20
Pull-out torque at JL
103H7123-5640
103H7123-5610
Torque (N·m)
0.1 1 10 100
100020003000 5000100
0.4
0.8
1.2
1.6
2.0
0
Pulse rate (kpulse/s)
Number of rotations (min
−1
)
fs
0
Torque (oz·in)
280
200
240
160
120
80
40
Pull-out torque at JL
Constant current circuit
Source voltage: 24 VDC
Operating current:
1 A/phase, 2-phase
energization (full-step)
J
L=[0.94 × 10
-4
kg·m
2
(5.14
oz·in
2
) use the rubber
coupling]
fs: Maximum self-start
frequency when not
loaded
Constant current circuit
Source voltage: 24 VDC
Operating current:
2 A/phase, 2-phase
energization (full-step)
J
L=[0.94 × 10
-4
kg·m
2
(5.14
oz·in
2
) use the rubber
coupling]
fs: Maximum self-start
frequency when not
loaded
Constant current circuit
Source voltage: 24 VDC
Operating current:
3 A/phase, 2-phase
energization (full-step)
J
L=[0.94 × 10
-4
kg·m
2
(5.14
oz·in
2
) use the rubber
coupling]
fs: Maximum self-start
frequency when not
loaded
Constant current circuit
Source voltage: 24 VDC
Operating current:
1 A/phase, 2-phase
energization (full-step)
J
L=[2.6 × 10
-4
kg·m
2
(14.22
oz·in
2
) use the rubber
coupling]
fs: Maximum self-start
frequency when not
loaded
70
Stepping Motors
103H7123-5740
5
3.
8
(
2.12
)
B
ipolar winding,
L
ead wire typ
e