# Stainless Bearing turned cloudy **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [October 18, 2017, 9:00am UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016 "2017-10-18T09:00:23Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![egisantos](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/egisantos/32/1659_2.png) [@egisantos](https://forums.yoyoexpert.com/u/egisantos)\ **Post date:** [October 18, 2017, 9:00am UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/1 "2017-10-18T09:00:23Z")
Hi Everybody! I have purchased 10 pieces of Concave 10-ball bearing, they were marketed as stainless steel (not here in YYE, not in US, not a store specifically for yoyos). Once I received them, I cleaned 3 pieces using acetone and lubed them as the usual procedure. I put them each in a yoyo, played for a while and stored them. The string was never removed. However, the outer race of the bearing, where the string loop stays, turned cloudy. It happened to all 3 of them. It is not shiny as before, it turned into a matte-looking steel. It does not bug me, but I think it is worth to think about this for a while. 🙂 Does this indicate that it is not really stainless steel? Just to isolate the case, I swapped the bearings with the one that are not cleaned/lubed. I am thinking that it might just be the acetone. I will check back on them next week. ---
**Author:** ![anon5341354](https://avatars.discourse-cdn.com/v4/letter/a/3ab097/32.png) [@anon5341354](https://forums.yoyoexpert.com/u/anon5341354)\ **Post date:** [October 18, 2017, 10:17am UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/2 "2017-10-18T10:17:32Z")
Mate, it’s not your best silverware. If it’s playing fine then just keep using it. ---
**Author:** ![egisantos](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/egisantos/32/1659_2.png) [@egisantos](https://forums.yoyoexpert.com/u/egisantos)\ **Post date:** [October 18, 2017, 10:28am UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/3 "2017-10-18T10:28:42Z")
> [@anon5341354](#): > > Mate, it’s not your best silverware. > > If it’s playing fine then just keep using it. Yeah, just found out that it could happen to other stainless steel utensils. Its working fine but doubting if I will buy another bulk of them since I hate false marketing. Lol. Just like what they say, you get what you pay for. ---
**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\ **Post date:** [October 18, 2017, 6:03pm UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/4 "2017-10-18T18:03:47Z")
There are various grades of stainless. Some of them are more prone to oxidation/tarnishing. ---
**Author:** ![egisantos](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/egisantos/32/1659_2.png) [@egisantos](https://forums.yoyoexpert.com/u/egisantos)\ **Post date:** [October 19, 2017, 12:29pm UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/5 "2017-10-19T12:29:09Z")
> [@jhb8426](#): > > There are various grades of stainless. Some of them are more prone to oxidation/tarnishing. That may be the reason for this. Maybe I will stick with Pixel for some time. ---
**Author:** ![Dathedral](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/dathedral/32/1538_2.png) [@Dathedral](https://forums.yoyoexpert.com/u/Dathedral)\ **Post date:** [August 29, 2018, 7:51pm UTC](https://forums.yoyoexpert.com/t/stainless-bearing-turned-cloudy/85016/6 "2018-08-29T19:51:52Z")
From what I’ve seen, steel will definitely do that. Only one of my bearings still shows a clean reflection, and I got to admit, it’s very cool staring at it while throwing. You could probably just give the outer race a quick polish or something to get looking new again.