# NSK Bearing debunk **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [January 31, 2025, 7:44pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277 "2025-01-31T19:44:37Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![rysk\_9844](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/rysk_9844/32/641377_2.png) [@rysk\_9844](https://forums.yoyoexpert.com/u/rysk_9844)\ **Post date:** [January 31, 2025, 7:44pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/1 "2025-01-31T19:44:37Z")
> **[NSK Concave Bearing](https://shop.yoyoexpert.com/products/nsk-gold-concave-yoyo-bearings?srsltid=AfmBOopu2vtWeFBpviRgOvAiyp5gy9mzbZi-8PYkBBcMIW5NSt9B5x0x)** > > If you haven't heard of NSK, they manufacture some of the best bearings on the market. They are responsible for some of our favorites like Yoyorecreation DS Bearings, YYF Gold Center Trac Bearings, and these - NSK Gold Concave Bearings! These... Does anyone here own a Platinum bearing? I vaguely remember a post on the YoYo BST a few years ago (but I can’t find the original) stating that you shouldn’t clean it with lighter fluid, or the coating will wear out. I just bought five from Japan, and I’m worried about them getting dirty after heavy use/play. Do they need to be cleaned or is it unnecessary? ---
**Author:** ![yoyojoe](https://avatars.discourse-cdn.com/v4/letter/y/e99b99/32.png) [@yoyojoe](https://forums.yoyoexpert.com/u/yoyojoe)\ **Post date:** [January 31, 2025, 7:57pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/2 "2025-01-31T19:57:27Z")
I’ve cleaned mine plenty and they work fine. ---
**Author:** ![yo-yo](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yo-yo/32/310712_2.png) [@yo-yo](https://forums.yoyoexpert.com/u/yo-yo)\ **Post date:** [January 31, 2025, 8:03pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/3 "2025-01-31T20:03:29Z")
I bought 2 of these and both of them got completley locked up after about 50 mins of play, and only started spinning again only after I cleaned them, so cleaning might be necessary for you. I don’t think that there are any defects so it’s probably fine to clean them ---
**Author:** ![YoyoGeezer](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyogeezer/32/755_2.png) [@YoyoGeezer](https://forums.yoyoexpert.com/u/YoyoGeezer)\ **Post date:** [January 31, 2025, 9:54pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/4 "2025-01-31T21:54:07Z")
Really? They “locked-up” after 50 minutes of play? If true; these bearings do not need to be cleaned, they need to be returned for a refund. If the bearings have their shields, there is no need to clean them. They are lubricated at the factory. Opening them for “cleaning” will just expose the bearings to grime and dirt as well as stripping the factory lubricant. The term lighter-fluid can refer to many different kinds of fluids. Most contain nasty hydrocarbons that may cause cancer. To me it seems safer to pay $20 for a new one if it goes bad. ---
**Author:** ![yo-yo](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yo-yo/32/310712_2.png) [@yo-yo](https://forums.yoyoexpert.com/u/yo-yo)\ **Post date:** [January 31, 2025, 11:36pm UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/5 "2025-01-31T23:36:55Z")
yeah, i was playing in a pretty humid area and I throw pretty hard though Also now that I think about it I probably did play with it for more than 50 mins Before they locked up though they were really good and silent ---
**Author:** ![mikeydoe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/mikeydoe/32/301589_2.png) [@mikeydoe](https://forums.yoyoexpert.com/u/mikeydoe)\ **Post date:** [February 1, 2025, 3:23am UTC](https://forums.yoyoexpert.com/t/nsk-bearing-debunk/418277/6 "2025-02-01T03:23:32Z")
I have one and I’ve cleaned it a bunch and it is good still