I fixed my dad's angle grinder with a ball bearing I salvaged from my gerbil's old excercise wheel a few years back.

https://lemm.ee/post/28874785

I fixed my dad's angle grinder with a ball bearing I salvaged from my gerbil's old excercise wheel a few years back. - lemm.ee

It was even the same brand. I love when hoarding materials pays off.

What happened to your gerbil, op?

Your answer will be highly scrutinized.

Safely stored in rectum

6201RS

  • 6 - type code: single-row, deep groove ball bearing
  • 2 - series / robustness: (2 corresponds with ‘light’, which is more durable than 0, but less durable than 3 or 4)
  • 01 - size code: 12mm bore (inner diameter)
  • RS - grease seal: rubber seal one side (no seal would be ‘6201’, both sides sealed would be ‘6201-2RS’. Z and ZZ are used similarly to indicate presence of steel shield(s))

The 6201 is a good fit for this application, and providing the gerbil wasn’t too hard on it, should last a long time.

Comments like these are why I periodically still love the internet.
I kinda needed this today, thank you. <3
I know you have equally developed knowledge and opinion on a variety of things, like sliced bread or boot rubber compound
I recently took apart my weed whacker and it used the same ball bearing. I actually learned that these ball bearing casings (?) are super common. I replaced mine with a skate board bearing and it’s as good as new.
So what do we think folks? Underbuilt angle grinder or overbuilt gerbil wheel?
Its a mass produced bearing type. Most likely the cheapest option for both devices. Optimizing a bearing for a gerbil wheel seems like the real overengineering in my opinion.
Thing is, when I had gerbils, their exercise wheel turned on a cylinder of plastic inside another cylinder of plastic. I also had one that was a wire wheel with sheet metal spokes and a wire base, the “bearings” were the wires of the base poked into holes in the spokes. A gerbil wheel having a ball bearing at all seems a little bit extra to me.