Military/Aerospace DC Motors and Gearmotors SD0 pages

SD MOTORS
A-1200
DC Permanent Magnet Motors
general design specification
power rating: .0025 hp (1.9 W)
voltage: 6 to 50 VDC
weight: 1.75 ounces
armature: Dynamically balanced
inertia: 2.55 x 10-5 oz. in. sec.2
electrical time constant: 0.5 milliseconds max
mechanical time constant: 40.0 milliseconds max
typical no load torque: 0.2 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: 8" #26 AWG leads per MIL-W-16878/4
Dimensions
housing: Aluminum
marking: Per MIL-STD-130
life: 1,000 hours continuous duty for 27 VDC units
winding temperature rise: 17°C per watt w/8.00" x
8.00" x .25" aluminum heat sink
winding insulation rating: 130°C (higher temperature
windings available)
options available:
• Gear train (see A-1230 for details)
• RFI filters to meet MIL-I-6181, MIL-I-26600 or MIL-STD-461
• Servo mounting
• Pinion shaft
1.454 MAX
.075 MAX SCREW
EXTENSION
.375
.031
1-72 UNF-2B
(3 HOLES EQUALLY SPACED) ON
.640 DIA
.250 MIN DEEP
.500 DIA
.498
.750 DIA
.1248 DIA
.1246
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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