Sinclair Interplanetary pioneered high-reliability vacuum-lubricated reaction wheels for picosatellites, nanosatellites and microsats. There are currently 76 wheels on-orbit, all working well.

All of these reaction wheels incorporate a built-in digital processor. They can be commanded over a serial bus to produce a desired speed, momentum or torque. They report digital telemetry concerning speed, temperature, voltage, current, and other health parameters.

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Last updated: 2020-06-23


25,000 USD (ROM)


  • CAD model(161 KB)
  • Datasheet(377.75 KB)
  • ICD(119.43 KB)
  • Option sheet
  • User manual


maximum torque
-2 to 2 mN m
3.4 to 6.0 V
maximum voltage
8 V
-0.5 to 0.5 mN m
angular momentum storage
0.03 N m s
maximum momentum storage
0.04 N m s
data interface
operating temperature
-40 to 70 C
mechanical vibration
> 12 Grms
radiation tolerance
> 20 krad
185 g
50 mm
50 mm
40 mm
maximum power
1.8 W
steady state power
0.3 W


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