Brush Type Manual - General Dynamics Global Imaging Technologies

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2125V-072
Brush DC Motors
72°
RED
.105 MAX.
.525
.065
MTG DIM
+.001
1.125 -.000
+.000
2.125 -.001
1.225 MIN.
2 PL
2.
1.
BLACK
Size Constants:
.083 THRU C'SK 82°
x .150 MIN 4 PL.
AS SHOWN EQ. SP. ON 1.950 B.C.
(all values at 25° C ambient temperature)
Units Symbol Value
Peak Torque, stalled @Vp: oz-in Tp 70
Power I 2 R @Tp: watts P 109
Continuous Stall Torque oz-in Tcs 11.2
Motor Constant oz-in/ W Km 6.72
Electrical Time Constant ms Te 0.28
Mechanical Time Constant ms Tm 12.24
Damping Factor (zero impedance) oz-in/(rad/sec) Fo 0.319
Break Away Torque oz-in Tf 2.4
Rotor Inertia oz-in-sec 2 Jm 0.0039
Theoretical Acceleration @ Tp rad/sec 2 t 17949
Ripple Frequency cycles/rev f R 41
Ripple Torque % (ave to peak) T R 7
Theoretical No Load Speed @ Tp rad/sec NLT 208.2
Weight oz WT 5.3
Maximum Allowable Temperature °C (at winding) Temp. 155
Thermal Resistence °C/W tpr 17.1
Winding Constants
Peak Current @ Tp Amps Nominal Ip 7.37 3.85 2.46
www.axsys.com
33
.720
NOTES:
(all values at 25° C ambient temperature)
.450
1. LEADS: #24 AWG TYPE
"ET" TEFLON COATED
PER MIL-W-16878, 12
INCHES MINIMUM
LENGTH.
2. MOTOR TO ROTATE CW
VIEWED FROM BRUSH
END WITH POSITIVE
VOLTAGE APPLIED TO
RED LEADWIRE WITH
RESPECT TO THE
BLACK.
Units TOL. Symbol -019 -069 -173
Resistance ohms +/-12.5% R 2.00 7.34 17.9
Inductance mH +/-30% L 0.56 2.07 5.05
Torque Sensitivity oz-in/A +/-10% Kt 9.50 18.2 28.4
Back EMF Constant: V/(rad/sec) +/-10% Kb 0.067 0.129 0.201
Peak Voltage @ Tp Volts Nominal Vp 14.7 28.3 44.0
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Brush Type DC Motors