Omron R88D-1SN ECT Series, User Manual, Page: 201 / 974

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2 Models and External Dimensions
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
2-
4 Exte
rn
al an
d Mou
n
ting
Dimen
sion
s
2
2-
4-5 D
ece
ler
ator Dimensio
ns
 For 1,500-r/min Servomotors (4 kW to 5.5 kW)
*1. D6 is the maximum diameter of the decelerator body between the flange side and Servomotor side.
(Refer to the Outline Drawing) The value is given only when the diameter is larger than the diameters of these two sides.
Take heed of this when you mount the decelerator to the machine.
*2. Indicates set bolt.
Note 1. The standard shaft type is a straight shaft.
2. A model with a key and tap is indicated with “J” at  of the model number. (Example:
R88G-HPG50A055K0SBJ)
3. The diameter of the motor shaft insertion hole is the same as the shaft diameter of the corresponding
Servomotor.
4. You cannot use this type of Decelerator for the Servomotor with key.
5. The dimensional drawings in this document are for showing main dimensions only, and they do not give
the details of the product shape.
Servo-
motor
rated
output
Re-
duc-
tion
ratio
Model
Outline
drawing
Dimensions [mm]
LM LR C1 C2 D1 D2 D3 D4 D5
D6
*1
E F1 F2
4 kW 1/5 R88G-HPG50A055
K0SB

1 149 156 170 180 x 180 190 200 165 163 122 --- 103 12 53
1/11 R88G-HPG50A115
K0SB

1 149 156 170 180 x 180 190 200 165 163 122 --- 103 12 53
1/20 R88G-HPG65A205
K0SB

1 231 222 230 180 x 180 260 200 220 214 168 220 165 12 57
1/25 R88G-HPG65A255
K0SB

1 231 222 230 180 x 180 260 200 220 214 168 220 165 12 57
5 kW
5.5 kW
1/5 R88G-HPG50A054
K5TB

1 149 156 170 180 x 180 190 200 165 163 122 --- 103 12 53
1/12 R88G-HPG65A127
K5SB

1 245.5 222 230 180 x 180 260 200 220 214 168 220 165 12 57
1/20 R88G-HPG65A204
K5TB

1 254.5 222 230 180 x 180 260 200 220 214 168 220 165 12 57
Servo-
motor
rated
output
Re-
duc-
tion
ratio
Model
Dimensions [mm]
G S T Z1 Z2
AT
*2
Key Tap
QK b h t1 M L
4 kW 1/5 R88G-HPG50A055K0SB

16 50 82 14 M12× 25 M6 70 14 9 5.5 M10 20
1/11 R88G-HPG50A115K0SB

16 50 82 14 M12× 25 M6 70 14 9 5.5 M10 20
1/20 R88G-HPG65A205K0SB  25 80 130 18 M12× 25 M8 110 22 14 9 M16 35
1/25 R88G-HPG65A255K0SB  25 80 130 18 M12× 25 M8 110 22 14 9 M16 35
5 kW
5.5 kW
1/5 R88G-HPG50A054K5TB

16 50 82 14 M12× 25 M6 70 14 9 5.5 M10 20
1/12 R88G-HPG65A127K5SB

25 80 130 18 M12× 25 M8 110 22 14 9 M16 35
1/20 R88G-HPG65A204K5TB  25 80 130 18 M12× 25 M8 110 22 14 9 M16 35