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.


90 g
7 mN m s
1 mN m
50 mm
40 mm
27 mm
min: 3.4 V, max: 6.0 V
8 V
0.7 W
0.2 W
min: -40 C, max: 70 C
> 12 Grms
> 20 krad
full datasheet


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Last updated: 2018-07-28