# I weighed some of my bearings / axles **URL:** \ **Category:** General Yo-Yo\ **Created:** [July 9, 2021, 11:16pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370 "2021-07-09T23:16:43Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![jjdddn1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jjdddn1/32/136288_2.png) [@jjdddn1](https://forums.yoyoexpert.com/u/jjdddn1)\ **Post date:** [July 9, 2021, 11:16pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/1 "2021-07-09T23:16:43Z")
There’re many posts about weights of bearing/axles and I’m trying to add more data points. Most of my **“generic” bearing** (pixel/yyf ct/kk from some high end c3 yoyo) weight around **1.90 ~ 2.00g** , with shield on. Removing the shield takes ~0.1g off The **NSK bearing** (DS) is around **2.10g** KK/CT ~ 2.0g so the DS version is ~ 0.1g heavier than the regular ones. The **dif kk with ceramic ball** is only **1.79g** (with shields on). I used to think it’s a waste of money, but I guess I was wrong. It provides a similar smoothness as the NSK, but is 0.3g lighter. The **full ceramic bearing** (from AliExpress/Sochi) is around **1.52g**. They are pricer & louder but 0.4g lighter than the regular bearing. Also, cheap bearings tend to be **heavier**. I weighted some of the cheap bearings from some low end magic yoyo (that you can get from Amazon), and they are all around **2.1g**. For axle, a **regular 10mm SS** axle is around **0.6g** , however a **titanium 10mm** is only **0.36g**. For 8mm, SS: 0.50g, Ti:0.26g ---
**Author:** ![hobby\_master](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobby_master/32/145533_2.png) [@hobby\_master](https://forums.yoyoexpert.com/u/hobby_master)\ **Post date:** [July 9, 2021, 11:29pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/2 "2021-07-09T23:29:22Z")
a gram can really make a difference in feel ---
**Author:** ![yoyodoc](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyodoc/32/48820_2.png) [@yoyodoc](https://forums.yoyoexpert.com/u/yoyodoc)\ **Post date:** [July 10, 2021, 12:16am UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/3 "2021-07-10T00:16:17Z")
You are correct. Why, just the other night I was watching a movie. I had a big glass of milk and a box of Gram crackers. Each cracker I ate made me feel 0.2g heavier. Fact is stranger than friction . ---
**Author:** ![hobby\_master](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/hobby_master/32/145533_2.png) [@hobby\_master](https://forums.yoyoexpert.com/u/hobby_master)\ **Post date:** [July 10, 2021, 12:19am UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/4 "2021-07-10T00:19:17Z")
nope thats called the placebo affect ---
**Author:** ![jjdddn1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jjdddn1/32/136288_2.png) [@jjdddn1](https://forums.yoyoexpert.com/u/jjdddn1)\ **Post date:** [July 10, 2021, 12:35am UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/5 "2021-07-10T00:35:57Z")
To me, on some yoyos I couldn’t tell the difference between different bearings at all. However, there are some yoyos (especially some light weight bi metals) on which 0.2g difference of center weight feels pretty obvious. ---
**Author:** ![craZivn](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/crazivn/32/124648_2.png) [@craZivn](https://forums.yoyoexpert.com/u/craZivn)\ **Post date:** [July 10, 2021, 5:04am UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/6 "2021-07-10T05:04:42Z")
My Speedaholic XX is .3 grams heavier than my Expedition but feels lighter in play. I wonder if that’s due to where the weight is distributed? Ivan ---
**Author:** ![jjdddn1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jjdddn1/32/136288_2.png) [@jjdddn1](https://forums.yoyoexpert.com/u/jjdddn1)\ **Post date:** [July 10, 2021, 5:28pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/7 "2021-07-10T17:28:38Z")
I never really understand the theory behind this but my guess is for plastic yoyo, the weight is more evenly distributed so they are more maneuverable and thus feels lighter? ---
**Author:** ![MarkD](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/markd/32/40845_2.png) [@MarkD](https://forums.yoyoexpert.com/u/MarkD)\ **Post date:** [July 10, 2021, 5:34pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/8 "2021-07-10T17:34:07Z")
That’s right, but furthermore the “lightness” is almost all from your memory of the throw, which is where the power of a yoyo is felt most, as it’s unwinding. Less-powerful yoyos (like a plastic, usually) put up less resistance to unwinding, as they have less rotational inertia. So, they unwind more quickly, and that makes them feel light. ---
**Author:** ![eternalmetal](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/eternalmetal/32/44877_2.png) [@eternalmetal](https://forums.yoyoexpert.com/u/eternalmetal)\ **Post date:** [July 10, 2021, 5:59pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/9 "2021-07-10T17:59:33Z")
So you can effectively eliminate ~0.6 g in center weight with lighter options. My thoughts are that I probably would never notice, but im thinking that in some yoyos weight reduction at the absolute center of the yoyo could be noticeable. Id probably consider messing around with this if I were a competitor with a yoyo already selected as favorite and just looking to make it marginally better. ---
**Author:** ![beezy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/beezy/32/161690_2.png) [@beezy](https://forums.yoyoexpert.com/u/beezy)\ **Post date:** [July 10, 2021, 10:48pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/10 "2021-07-10T22:48:47Z")
I did a very nerdy thread a couple years back on this topic. Just going to paste results from that here to help keep the info consolidated :wink: > [@Let's talk about bearing and axle weight](https://forums.yoyoexpert.com/t/lets-talk-about-bearing-and-axle-weight/311661/1): > > **Axles** > 5mm: 0.28g > 10mm: 0.61g > 16mm: 1.13g > > **Bearings** > YYR DS (10-ball), deshielded: 1.90g > Dif-e-yo KK (8-ball), deshielded: 1.81g > BB concave ceramic (8-ball), deshielded: 1.83g > YYF center trac (8-ball), shielded: 1.93g > OD flat (10-ball), deshielded: 2.08g > YYJ flat (8-ball), deshielded: 1.85g ---
**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:** [July 11, 2021, 6:41am UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/11 "2021-07-11T06:41:54Z")
Frankly I can’t see that an item (axle & bearing) weighing .05% - .1% of the total weight has a perceptible affect on the feel/performance of a yoyo regardless of it’s placement. Sounds like a case of OCD to me. ---
**Author:** ![kevinm](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/kevinm/32/697_2.png) [@kevinm](https://forums.yoyoexpert.com/u/kevinm)\ **Post date:** [July 11, 2021, 12:31pm UTC](https://forums.yoyoexpert.com/t/i-weighed-some-of-my-bearings-axles/341370/12 "2021-07-11T12:31:53Z")
Axle weight is overrated. [![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/8/a/a/8aac36c7f913f533f9e4ca6cf2254ebe5652d915.jpeg "Space Physics: The Science of YoYo's in Zero Gravity | NASA ISS Space Station Microgravity Video") ](https://www.youtube.com/watch?v=dequ6OrKEaQ)