It's certainly possible to make bearings and whatnot that last for enormous life...

		_ofdw on Oct 10, 2013 \| parent \| context \| favorite \| on: Aerospace Company Develops Drone That Can Fly Cont... It's certainly possible to make bearings and whatnot that last for enormous lifetimes. It's all a question of cost. When your buyer is the ridiculously over-funded US Military, you can afford to charge quite a bit more.