Micro pitting

Micro pitting is when tiny holes or grooves form on a surface, usually in metal things like gears or bearings. It's called "micro" because the holes are very small and can't be seen super easily.

Imagine you have a toy car with wheels that turn. If you keep playing with that toy car over and over again, eventually the wheels might start to get little holes in them. This can happen because the wheels rub against each other and create little bits of friction or "wear and tear."

Now imagine that instead of a toy car, you have a big machine with lots of gears and parts that all move together. If those gears or parts start to get micro pitting, it can cause big problems. The little holes can make the machine less efficient or less accurate, and can cause it to wear out faster.

So, micro pitting is something that engineers and mechanics try to prevent or fix in machines and other metal objects. They might use special lubricants or coatings to reduce friction and protect surfaces from wear and tear. They might also inspect the surfaces regularly to catch any signs of micro pitting before it becomes a bigger problem.