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MDS-D-SVJ3/SPJ3 Series Specifications Manual
2-2 Spindle motor
2 - 7
2-2 Spindle motor
2-2-1 Specifications
< SJ-D Series (Standard) >
(Note)
The tolerable radial load is the value calculated at the center of output shaft.
Spindle motor type
SJ-D3.7/100-01
SJ-D5.5/100-01
SJ-D7.5/100-01
SJ-D11/80-01
Compatible 
spindle drive 
unit type
MDS-D-SPJ3-
37NA
55NA
75NA
110NA
Output 
capacity
Continuous rating [kW]
2.2
3.7
5.5
7.5
Short time rating [kW]
3.7
(15-minute rating)
5.5
(30-minute rating)
7.5
(30-minute rating)
11
(30-minute rating)
Power facility capacity [kVA]
6.7
9.9
13.4
19.6
Base rotation speed [r/min]
1500
1500
1500
1500
Maximum rotation speed [r/min]
10000
10000
10000
8000
Frame No.
B90
D90
A112
B112
Continuous rated torque [N•m]
14.0
23.6
35.0
47.7
GD
[kg•m
2
]
0.030
0.053
0.094
0.122
Inertia [kg•m
2
]
0.0074
0.013
0.023
0.031
Tolerable radial load [N]
980
1470
1960
1960
Cooling fan
Input voltage
3-phase 200V
Maximum power 
consumption
38W
38W
50W
50W
Environment
Ambient temperature
Operation: 0 to 40 ℃ (with no freezing), Storage: -20 ℃ to 65 ℃ (with no freezing)
Ambient humidity
Operation: 90%RH or less (with no dew condensation), Storage: 90%RH or less (with no dew condensation)
Atmosphere
Indoors (no direct sunlight); no corrosive gas, inflammable gas, oil mist, or dust
Altitude
Operation: 1000 meters or less above sea level, Storage: 1000 meters or less above sea level,
Transportation: 10000 meters or less above sea level
Degree of protection
IP54 (The shaft-through portion is excluded.)
Flange size [mm]
174 SQ.
174 SQ.
204 SQ.
204 SQ.
Total length (excluding shaft) [mm]
327
417
439
489
Flange fitting diameter [mm]
φ150
φ150
φ180
φ180
Shaft diameter [mm]
φ28
φ28
φ32
φ48
Mass [kg]
26
39
53
64
Heat-resistant class
Class F (155°C)
For outline dimension drawings, refer to "DRIVE SYSTEM DATA BOOK" (IB-1500273(ENG)).