Military/Aerospace DC Motors and Gearmotors SS0 pages

SS MOTORS
A-1400
DC Permanent Magnet Motors
general design specification
power rating: .004 hp (3 W)
voltage: 6 to 50 VDC
weight: 2 ounces
armature: Dynamically balanced
inertia: 2.55 x 10-5 oz. in. sec.2
electrical time constant: 0.5 milliseconds max
mechanical time constant: 20.0 milliseconds max
typical no load torque: 0.23 oz. in.
protection: Varnish impregnated
shaft: Precision-ground, through-hardened (RC 40-50) 420
stainless steel per ASTM A582. Options: length, smaller
diameter, flats, pinions, gears, holes (through or tapped),
threaded ends and tapers. Type of steel used may change
depending upon variation selected
magnets: Alnico V
bearings: Double shielded, life-lubricated for -55°C to +85°C
operation. Special lubricants available for temperature
extremes
cables/leads: Open motor has solder terminals. Enclosed
Dimensions
motor has 8" shielded cable per MIL-C-7078 #26 AWG
conductors per MIL-W-16878/4
housing: Aluminum
marking: Per MIL-STD-130
1.66 MAX
(ENCLOSED MOTOR)
1.38 MAX
(OPEN MOTOR)
.050
life: 1,000 hours continuous duty for 27 VDC units
.375
.330
.330
.1248 DIA
.1246
.500 DIA
.498
winding temperature rise: 15°C per watt w/8.00" x
8.00" x .25" aluminum heat sink
winding insulation rating: 130°C (higher temperature
.875
DIA
windings available)
options available:
2-56 UNC-2B .187
MIN DEEP (2 MOUNTING HOLES)
.075 MAX SCREW EXTENSION
SERVO MOUNT
.062
• Gear train (see A-1430 for details)
• Electromechanical brakes
• RFI filters to meet MIL-I-6181, MIL-I-26600 or MIL-STD-461
• Integral tachometer generators
PINION
.375
.040
.250 MIN
FULL GEAR
.625
GROOVE
DIA
.1248 GEAR O.D.
.1225
PINION DATA: NUMBER OF TEETH - 13
DIAMETRAL PITCH - 120
PRESSURE ANGLE - 20°
MEAS. OVER. .0144 DIA
PINS - .1272/.1262
AGMA 9 IS STANDARD. OTHER PINIONS ARE
AVAILABLE. PINION AVAILABLE WITH BOTH
TAPPED HOLE AND SERVO MOUNT UNITS
ROTATION (VIEWED FROM SHAFT END)
CCW - POSITIVE VOLTAGE TO RED (+), NEGATIVE VOLTAGE TO BLACK (–)
CW - REVERSE POLARITY
NOTE: Consult factory prior to preparing spec control prints. Dimensions are for reference only
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