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MDS-D/DH Series Specifications Manual
2-2 Spindle motor
2 - 31
< SJ-4-V Series (Standard) >
(Note 1) The rated output is guaranteed at the rated input voltage (380 to 440VAC 50Hz / 380 to 480VAC 60Hz)
to the power supply unit. If the input voltage fluctuates and drops below 380VAC, the rated output may
not be attained.
(Note 2) The tolerable radial load is the value calculated at the center of output shaft.
Spindle motor type SJ-4-V18.5-14T SJ-4-V22-15T SJ-4-V26-08T SJ-4-V37-04T SJ-4-V45-02T SJ-4-V55-03T
Compatible
spindle drive
unit type
MDS-DH-SP- 100 160 200 320
Output
capacity
Continuous rating [kW] 15 18.5 22 30 37 45
Short time rating [kW]
18.5
(30-minute
rating)
22
(30-minute
rating)
26
(30-minute
rating)
37
(30-minute
rating)
45
(30-minute
rating)
55
(30-minute
rating)
Power facility capacity [kVA] 32.8 39.0 46.1 65.5 79.6 97.2
Base rotation speed [r/min] 1500 1150 1500 1150
Maximum rotation speed [r/min] 6000 3450
Frame No. A160 B160 C160 A180 B180 A225
Continuous rated torque [N•m] 95.5 118 140 249 236 374
GD
2
[kg•m
2
]
0.23 0.32 0.38 1.23 2.19 3.39
Inertia [kg•m
2
]
0.06 0.08 0.10 0.31 0.55 0.85
Tolerable radial load [N] 2940 3920 5880
Cooling fan
Input voltage 3-phase 400V
Maximum power
consumption
72W Refer to each motor specifications.
Environment
Ambient temperature Operation: 0 to 40°C (with no freezing), Storage: -20°C to 65°C (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 IP44
Flange size [mm] 250 SQ. 250 SQ. 250 SQ. 320 SQ. 320 SQ. 480 SQ.
Total length (excluding shaft) [mm] 469.5 539.5 585.5 631 700 724
Flange fitting diameter [mm] φ230 φ230 φ230 φ300 φ300 φ450
Shaft diameter [mm] φ48 φ55 φ55 φ60 φ60 φ75
Mass [kg] 110 135 155 280 390 450
Heat-resistant class F (155°C)
For outline dimension drawings, refer to "DRIVE SYSTEM DATA BOOK" (IB-1500273(ENG)).