The SM-200 Servo Drive is an automatic flight control system
power unit. When coupled to the servo drum and housing assembly, the SM-200
controls aircraft aileron, elevator, and rudder surface position. The function
of the SM-200 is to translate electrical inputs into a rotational mechanical
output to drive a drum and housing assembly. The SM-200 also provides
position and rate feedback signals. The SM-200 requires an input
voltage of +28 Vdc. The starting input wattage for the SM-200 is 60 Watts but
is only 40 Watts while running.
The SM-200 is composed of a
motor-tachometer, synchro (except for -94X and 95X units), and a clutch. The
motor-tachometer is externally mounted on a cast aluminum housing that
contains a bearing-supported gear train. The synchro, when present, and the
clutch are externally mounted on a plate that serves as a cover for the
housing. The SM-200 mounts onto a SB-201 mounting bracket for installation.
The dimensions for the SM-200 are 7.55 inches in length, 3.75 inches in width
and a height of 3.80 inches weighing 5.1 pounds maximum.
Part Number Differences: Part Number | Power Gear A No. of Teeth | Power Gear B No. of Teeth | Synchro Gear C No. of Teeth | Synchro Gear D No. of Teeth |
4006719-704 | 46 Teeth | 29 Teeth | 94 Teeth | 74 Teeth |
4006719-713 | 60 Teeth | 15 Teeth | 122 Teeth | 46 Teeth |
4006719-733 | 60 Teeth | 15 Teeth | 122 Teeth | 46 Teeth |
4006719-901 | 32 Teeth | 43 Teeth | 58 Teeth | 110 Teeth |
4006719-902 | 39 Teeth | 36 Teeth | 58 Teeth | 110 Teeth |
4006719-903 | 46 Teeth | 29 Teeth | 58 Teeth | 110 Teeth |
4006719-904 | 46 Teeth | 29 Teeth | 94 Teeth | 74 Teeth |
4006719-905 | 52 Teeth | 23 Teeth | 58 Teeth | 110 Teeth |
4006719-906 | 52 Teeth | 23 Teeth | 94 Teeth | 74 Teeth |
4006719-907 | 52 Teeth | 23 Teeth | 122 Teeth | 46 Teeth |
4006719-908 | 57 Teeth | 18 Teeth | 58 Teeth | 110 Teeth |
4006719-909 | 57 Teeth | 18 Teeth | 94 Teeth | 74 Teeth |
4006719-910 | 57 Teeth | 18 Teeth | 122 Teeth | 46 Teeth |
4006719-911 | 60 Teeth | 15 Teeth | 58 Teeth | 110 Teeth |
4006719-912 | 60 Teeth | 15 Teeth | 94 Teeth | 74 Teeth |
4006719-913 | 60 Teeth | 15 Teeth | 122 Teeth | 46 Teeth |
4006719-914 | 39 Teeth | 36 Teeth | 94 Teeth | 74 Teeth |
4006719-917 | 46 Teeth | 29 Teeth | 94 Teeth | 74 Teeth |
4006719-918 | 46 Teeth | 29 Teeth | 58 Teeth | 110 Teeth |
4006719-919 | 46 Teeth | 29 Teeth | 94 Teeth | 74 Teeth |
4006719-920 | 57 Teeth | 18 Teeth | 122 Teeth | 46 Teeth |
4006719-921 | 52 Teeth | 23 Teeth | 94 Teeth | 74 Teeth |
4006719-922 | 57 Teeth | 18 Teeth | 122 Teeth | 46 Teeth |
4006719-923 | 57 Teeth | 18 Teeth | 122 Teeth | 110 Teeth |
4006719-924 | 52 Teeth | 23 Teeth | 94 Teeth | 74 Teeth |
4006719-925 | 57 Teeth | 18 Teeth | 122 Teeth | 46 Teeth |
4006719-926 | 60 Teeth | 15 Teeth | 122 Teeth | 46 Teeth |
4006719-933 | 60 Teeth | 15 Teeth | 122 Teeth | 46 Teeth |
4006719-941 | 32 Teeth | 43 Teeth | No Synchro | No Synchro |
4006719-942 | 39 Teeth | 36 Teeth | No Synchro | No Synchro |
4006719-943 | 46 Teeth | 29 Teeth | No Synchro | No Synchro |
4006719-944 | 52 Teeth | 23 Teeth | No Synchro | No Synchro |
4006719-945 | 57 Teeth | 18 Teeth | No Synchro | No Synchro |
4006719-946 | 60 Teeth | 15 Teeth | No Synchro | No Synchro |
4006719-948 | 57 Teeth | 18 Teeth | No Synchro | No Synchro |
4006719-949 | 57 Teeth | 18 Teeth | No Synchro | No Synchro |
4006719-951 | 32 Teeth | 43 Teeth | No Synchro | No Synchro |
4006719-952 | 39 Teeth | 36 Teeth | No Synchro | No Synchro |
4006719-953 | 46 Teeth | 29 Teeth | No Synchro | No Synchro |
4006719-954 | 52 Teeth | 23 Teeth | No Synchro | No Synchro |
4006719-955 | 57 Teeth | 18 Teeth | No Synchro | No Synchro |
4006719-956 | 60 Teeth | 15 Teeth | No Synchro | No Synchro |