2 Specification
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23
2.3
Motor
2.3.1
Frame Size 20 mm
Model
Ai-M-20MA
Ai-M-20LA
Max. stop torque
※
1
0.183 kgf·cm (0.018 N·m) 0.357 kgf·cm (0.035 N·m)
Rotor moment of
inertia
2 g·cm
2
(2
ⅹ
10
-7
kg·m
2
)
Rated current
0.6 A/Phase
Resistance
6.6
Ω
/Phase ±
10%
10.5
Ω
/Phase ±
10%
Inductance
2.1 mH/Phase ±
20%
4.0 mH/Phase ±
20%
Weight
※
2
Approx. 0.192 kg
(approx. 0.092 kg)
Approx. 0.219 kg
(approx. 0.120 kg)
2.3.2
Frame Size 28 mm
Model
Ai-M-28SB
Ai-M-28MB
Ai-M-28LB
Max. stop torque
※
1
0.51 kgf·cm (0.05 N·m)
1.42 kgf·cm (0.14 N·m)
1.63 kgf·cm (0.16 N·m)
Rotor moment of
inertia
9 g·cm
2
(9
ⅹ
10
-7
kg·m
2
)
12 g·cm
2
(12
ⅹ
10
-7
kg·m
2
) 18 g·cm
2
(18
ⅹ
10
-7
kg·m
2
)
Rated current
1.0 A/Phase
Resistance
5.78
Ω
/Phase ±
10%
8.8
Ω
/Phase ±
10%
10.1
Ω
/Phase ±
10%
Inductance
3.2 mH/Phase ±
20%
6.0 mH/Phase ±
20%
6.2 mH/Phase ±
20%
Weight
※
2
Approx. 0.260 kg (approx.
0.162 kg)
Approx. 0.318 kg (approx.
0.222 kg)
Approx. 0.342 kg (approx.
0.248 kg)
2.3.3
Frame Size 35 mm
Model
Ai-M-35SB
Ai-M-35MB
Ai-M-35LB
Max. stop torque
※
1
0.714 kgf·cm (0.07 N·m)
1.326 kgf·cm (0.13 N·m)
3.162 kgf·cm (0.31 N·m)
Rotor moment of
inertia
8 g·cm
2
(8
ⅹ
10
-7
kg·m
2
)
14 g·cm
2
(14
ⅹ
10
-7
kg·m
2
) 22 g·cm
2
(22
ⅹ
10
-7
kg·m
2
)
Rated current
1.2 A/Phase
Resistance
2.1
Ω
/Phase ±
10%
3.25
Ω
/Phase ±
10%
5.0
Ω
/Phase ±
10%
Inductance
1.25 mH/Phase ±
20%
2.85 mH/Phase ±
20%
5.6 mH/Phase ±
20%
Weight
※
2
Approx. 0.278 kg (approx.
0.180 kg)
Approx. 0.347 kg (approx.
0.250 kg)
Approx. 0.456 kg (approx.
0.366 kg)
※
1: Max. holding torque is standard torque when supplying the rated current
(2-phase holding) and stopping the motor for comparing the specifications of motors.
※
2: The weight includes packaging. The weight in parenthesis is for unit only.