2 Models and External Dimensions
2 - 56
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
4 kW/4.7 kW (with Brake)
R88M-1L4K030T-B(O/S2/OS2)
R88M-1L4K730T-B(O/S2/OS2)
Note The standard shaft type is a straight shaft. Models with a key and tap are indicated with “S2” at the end of
the model number.
Models with an oil seal are indicated with “O” at the end of the model number.
Shaft-end with key and tap
Model
Dimensions [mm]
LL L1
R88M-1L4K030T-B(O/S2/OS2) 251±3 128
R88M-1L4K730T-B(O/S2/OS2) 275±3 152
Model
Dimensions [mm]
QA QK W T U QE LT
R88M-1L4K030T-B(S2/OS2) 3 52 7 M8 20
R88M-1L4K730T-B(S2/OS2) 3 52 7 M8 20
24-0.013 dia.
145±0.2 dia.
4-9±0.5 dia.
12±0.5
4±0.4
65±1LL
60±0.95
R2 max
127±3
(92 dia.)
(L1)
0
(192)
Motor and brake connector
Encoder connector
130×130±2
110
0
-0.035 dia.
T
W
U
QA QK
Key and tap cross section
QE (tap)
LT (tap depth)
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