Mars rover works its way out of crater

[Elgin Clock]

Originally Posted by Andy Baker

My guess is that they use materials with impregnated lubricants, or materials which naturally have high lubricity. Most likely, they stay away from grease or oil lubricants, as these can easily attract debris while also not be reliable after being in the vacuum of space for a while.
But that is just a guess. I would be very interested in hearing what is actually used.

Andy B.

What about Graphite powder? That's a non-liquid lubricant, & very effective for unsticking things with repeated use, like car door locks for example... on Earth at least. lol