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6. HG-MR SERIES/HG-KR SERIES
6 - 11
6.6.2 For high precision applications (G5/G7)
(1) Reduction ratio
The symbols (11B, 14A, 20A, and 32A) in the following table indicate the model numbers of the reducers
assembled to the servo motors. Servo motors with a reducer having the indicated reduction gear model
numbers are available. The reducer model number indicates _ _ _ of the reducer model HPG-_ _ _-05.
Servo motor
Reduction ratio
1/5 1/9 1/11 1/21 1/33 1/45
HG-KR053(B)G5
HG-KR053(B)G7
11B/14A 11B 14A
HG-KR13(B)G5
HG-KR13(B)G7
11B/14A
14A 20A
HG-KR23(B)G5
HG-KR23(B)G7
14A 14A 20A
HG-KR43(B)G5
HG-KR43(B)G7
14A 20A 32A
HG-KR73(B)G5
HG-KR73(B)G7
20A 20A 32A
(2) Specifications
Item Description
Mounting method Flange mounting
Mounting direction In any directions
Lubrication method
Grease lubrication (already packed)
Packed
with
Harmonic grease SK-2
(Harmonic Drive Systems)
Output shaft rotating direction Same as the servo motor output shaft direction.
Backlash (Note 3) 3 minutes or less at reducer output shaft
Permissible load inertia moment
ratio (when converting into the
servo motor shaft)
(Note 1)
50 W/100 W/750 W: 10 times or less
200 W/400 W: 14 times or less
Maximum torque Three times of the servo motor rated torque
Maximum speed
(servo motor shaft)
6000 r/min (permissible instantaneous speed: 6900 r/min)
IP rating (reducer area) IP44 equivalent
Reducer efficiency
(Note 2)
50 W (reducer model No. 14A): 22% to 41%
50 W (reducer model No. 11B)/100 W/200 W/400 W/750 W: 58% to 87%
Note 1. If the above indicated value is exceeded, please contact your local sales office.
2. The reducer efficiency differs depending on the reduction ratio. Also, it changes depending on the
operating conditions such as the output torque, speed and rotation, temperature, etc. The numerical
value in the table is a typical value in the rated torque, rated speed and rotation and typical
temperature, and not a guaranteed value.
3. The backlash can be converted: 1 min = 0.0167 °