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3-3 Servomotor Specifications
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
   3
Specifications
1,500-r/min and 2,000-r/min Servomotors 
Model (R88M-)
Item Unit
200 VAC
K1K020H K1K520H K2K020H
K1K020T K1K520T K2K020T
Rated output *
1
W 1,000 1,500 2,000
Rated torque *
1
N • m4.777.169.55
Rated rotation speed r/min 2,000
Maximum rotation speed r/min 3,000
Momentary maximum 
torque *
1 
N • m 14.3 21.5 28.6
Rated current *
1 
A (rms) 5.7 9.4 11.5
Momentary maximum 
current *
1 
A (0-p) 24 40 49
Rotor 
inertia
Without brake kg • m
2
4.60×10
-4
6.70×10
-4
8.72×10
-4
With brake kg • m
2
5.90×10
-4
7.99×10
-4
10.0×10
-4
Applicable load inertia − 10 times the rotor inertia max. *
2
Torque constant *
1 
N • m/A0.630.580.64
Power rate 
*
1 
Without brake kW/s 49.5 76.5 105
With brake kW/s 38.6 64.2 91.2
Mechanical 
time 
constant
Without brake ms 0.80 0.66 0.66
With brake
ms 1.02 0.80 0.76
Electrical time constant ms 9.4 10 10
Allowable radial load *
3 
N 490 490 490
Allowable thrust load *
3 
N 196 196 196
Weight
Without brake kg Approx. 5.2 Approx. 6.7 Approx. 8.0
With brake kg Approx. 6.7 Approx. 8.2 Approx. 9.5
Radiator plate dimensions
(material)
275 × 260 × t15 (AI)
Applicable Servo Drives (R88D-) KT10H KT15H KT20H
Brake specifications
Brake inertia kg • m
2
1.35×10
-4
1.35×10
-4
1.35×10
-4
Excitation voltage *
4 
V 24 VDC ± 10%
Power consumption 
(at 20°C)
W141919
Current consumption 
(at 20°C)
A0.59±10% 0.79±10% 0.79±10%
Static friction torque N • m 4.9 min. 13.7 min. 13.7 min.
Attraction time *
5 
ms 80 max. 100 max. 100 max.
Release time *
5 
ms 70 max. *
6 
50 max. *
6 
50 max. *
6 
Backlash ±1°
Allowable work per 
braking
J 588 1,176 1,176