# Responsive C bearings are where?
**URL:** https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470
**Category:** General Yo-Yo
**Created:** [August 4, 2018, 6:35pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470 "2018-08-04T18:35:08Z")
**Posts on this page:** 17
**Page:** 1
### Author:  [@zslane](https://forums.yoyoexpert.com/u/zslane)
#### Post date: [August 4, 2018, 6:35pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/1 "2018-08-04T18:35:08Z")
So where does one purchase replacement _responsive_ size C bearings?
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### Author:  [@andy569](https://forums.yoyoexpert.com/u/andy569)
#### Post date: [August 4, 2018, 6:36pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/2 "2018-08-04T18:36:11Z")
It’s not a thing you can purchase as far as I’m aware but you can buy thick lube to make a C bearing responsive
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### Author:  [@AndreBoulay](https://forums.yoyoexpert.com/u/AndreBoulay)
#### Post date: [August 4, 2018, 6:37pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/3 "2018-08-04T18:37:15Z")
Yeah - you can make any bearing responsive using thick lube. 😊
> **[YYF Performance Oil](https://shop.yoyoexpert.com/products/yyf-performance-oil)**
>
> YoYoFactory performance oil is available in two types depending on your style of play!The Loop/Response performance oil is a high viscosity lubricant that is designed to make yo-yos more responsive. This oil should used to make your "tug responsive"...
There are also ‘narrow’ Size C Bearings but they only will fit in certain yo-yos - thick lube is the way to go (and you can also add extra wraps around the bearing if need be too with the string to increase responsiveness).
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### Author:  [@VidiaOktavianisID](https://forums.yoyoexpert.com/u/VidiaOktavianisID)
#### Post date: [August 4, 2018, 7:37pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/4 "2018-08-04T19:37:01Z")
Oh my goodness. I using the singer oil to lube my bearings. But it is safe to using this to lube any yoyo bearings?
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### Author:  [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)
#### Post date: [August 4, 2018, 7:42pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/5 "2018-08-04T19:42:43Z")
Or perhaps you mean the 1/2 spec?
> **[YoYoFactory Bearings](https://shop.yoyoexpert.com/collections/yo-yo-bearings/products/yyf-yoyo-bearing?variant=18870471620)**
>
> These are replacement bearings for your YoYoFactory yo-yos.The Small Spec Bearing is a high quality Size A (5x10x4 mm) stainless steel bearing yo-yo for small bearing compatible yo-yos.The Large Spec Bearing is a Size C (.250 x .500 x .187) and fits...
Look for “Half Bearing” in the pull down menu.
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### Author:  [@zslane](https://forums.yoyoexpert.com/u/zslane)
#### Post date: [August 4, 2018, 8:01pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/6 "2018-08-04T20:01:54Z")
No, I’m referring to Size C bearings that are narrower than usual, the idea being that a standard C bearing creates a gap too wide for responsive play.
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### Author:  [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)
#### Post date: [August 4, 2018, 8:03pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/7 "2018-08-04T20:03:22Z")
^Look at my post please
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### Author:  [@zslane](https://forums.yoyoexpert.com/u/zslane)
#### Post date: [August 4, 2018, 8:11pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/8 "2018-08-04T20:11:09Z")
Ah, yes, that’s it! Thanks!
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### Author:  [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)
#### Post date: [August 4, 2018, 8:34pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/9 "2018-08-04T20:34:25Z")
So just to clarify
- SPEC XS Bearing Loop 900/1080 (Size B???)
- Mighty Flea Bearing (Size E)
- SPEC X Bearing - 10 Ball (Size C) - 250 x .500 x .187 in
- SPEC Large Bearing (Size C) - 250 x .500 x .187 in
- SPEC Small Bearing (Size A) - 5x10x4 mm
Per this
> **[Ball Bearings](https://yoyo.fandom.com/wiki/Ball_Bearings)**
>
> Ball bearings, in the context of yo-yo play, were introduced in the early 1990s. They are used to reduce friction while the yo-yo is sleeping. A ball bearing yo-yo can be played in two extreme states. One configuration involves using a thick...
- **Size A** - The A bearing fits most [Duncan](http://yoyo.wikia.com/wiki/Duncan), [Playmaxx](http://yoyo.wikia.com/wiki/Playmaxx), [YoYoFactory](http://yoyo.wikia.com/wiki/YoYoFactory), [ZanNavi](http://yoyo.wikia.com/wiki/Shinwoo) and many other yo-yos. Measures 5 x 10 x 4mm, part number MR105. Relatively common in looping and small bearing 5A yo-yos.
- **Size B** - This bearing fits small bearing [YoYoJam](http://yoyo.wikia.com/wiki/YoYoJam) yo-yos, including the SpinFaktor series (but not the HG or the SFX), Kamaitachi, Sunset Trajectory, Matrixx, and certain other yo-yos. It also fits the [SuperYo](http://yoyo.wikia.com/wiki/SuperYo)Renegade, and the [Spintastics](http://yoyo.wikia.com/wiki/Spintastics) Revolver and Eclipse yo-yos. Measures .250 x .375 x .125 (1/4" x 3/8" x 1/8"), part number R168. Good for looping yo-yos.
- **Size C** - Fits large-bearing YoYoJam yo-yos including the Hitman, Lyn Fury, Spinmaster 2 and 3, Big Ben, Patriot, Night Moves 2 and 3, Shockwave 3, the Speeder and the Speedmaker, as well as the YoYoFactory G5 and 888 and many other yo-yos today. This size has become the most popular for competition-level 1A yo-yos. Measures .250 x .500 x .187 inches (1/4" x 1/2" x 3/16") or 6.35 x 12.7 x 4.7498mm, part number R188.
- **Size D** - Commonly fits [B.I.S.T.](http://yoyo.wikia.com/wiki/B.I.S.T.), [HSpin](http://yoyo.wikia.com/wiki/HSpin), [SPYY](http://yoyo.wikia.com/wiki/SPYY), and [XCube](http://yoyo.wikia.com/wiki/XCube) yo-yos. Measures 5mm x 11mm x 5mm. (0.196" x 0.433" x 0.196"), part number 685, or alternatively part number MR115 for the 4mm wide bearing. Some yo-yos made by companies in Japan or the United States had produced yo-yos that use this bearing size, due to its faster rotational speed than the C size.
- **Size E** - Fits the Spintastics Tornado 2, Tigershark, Riot, Great White, Comet, Torch, and Firefly, and [Yomega](http://yoyo.wikia.com/wiki/Yomega) small bearing yo-yos such as the [Raider](http://yoyo.wikia.com/wiki/Yomega_Raider). Measures .156" x .312" x .125" (or 3.962 x 7.925 x 3.175mm), part number R155. Similar in size to the bearing used by the YoYoFactory Mighty Flea, and as such, there’s often confusion between the two sizes.
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### Author:  [@zslane](https://forums.yoyoexpert.com/u/zslane)
#### Post date: [August 4, 2018, 8:36pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/10 "2018-08-04T20:36:49Z")
That’s a great amendment to the diagram! Thank you!
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### Author:  [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)
#### Post date: [August 4, 2018, 9:29pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/11 "2018-08-04T21:29:42Z")
> [@zslane](#):
>
> No, I’m referring to Size C bearings that are narrower than usual, the idea being that a standard C bearing creates a gap too wide for responsive play.
No, it doesn’t. As noted, lube the bearing. This has worked well since the beginning of time (so to speak).
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### Author:  [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)
#### Post date: [August 4, 2018, 9:30pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/12 "2018-08-04T21:30:37Z")
> [@VidiaOktavianisID](#):
>
> Oh my goodness. I using the singer oil to lube my bearings. But it is safe to using this to lube any yoyo bearings?
>
> 
Yes it is…
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### Author:  [@AndreBoulay](https://forums.yoyoexpert.com/u/AndreBoulay)
#### Post date: [August 4, 2018, 10:00pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/13 "2018-08-04T22:00:55Z")
Technically a half SPEC bearing could still be unresponsive if it is completely clean spinning. But it is definitely going to help make any yoyo more responsive and regardless no problem to bind. This is how some of YoYoJam’s offstrings shipped for awhile.
@zslane what YoYo is this for? Half Spec will not fit in ‘everything’, etc.
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### Author:  [@zslane](https://forums.yoyoexpert.com/u/zslane)
#### Post date: [August 4, 2018, 11:18pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/14 "2018-08-04T23:18:08Z")
A Recess First Base.
It comes pre-installed with what its documentation refers to as a “slim” bearing. And the wide “upgrade” bearing looks like a typical Center Trac bearing.
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### Author:  [@Myk\_Myk](https://forums.yoyoexpert.com/u/Myk_Myk)
#### Post date: [August 4, 2018, 11:43pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/15 "2018-08-04T23:43:26Z")
…but it’s not the same…
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### Author:  [@AndreBoulay](https://forums.yoyoexpert.com/u/AndreBoulay)
#### Post date: [August 5, 2018, 1:42am UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/16 "2018-08-05T01:42:44Z")
Yes. Perfect then. 😊
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### Author:  [@AaronW](https://forums.yoyoexpert.com/u/AaronW)
#### Post date: [August 6, 2018, 1:49pm UTC](https://forums.yoyoexpert.com/t/responsive-c-bearings-are-where/291470/17 "2018-08-06T13:49:53Z")
They’re getting tougher to get, but R188 Rubber Shield bearings are usually packed with grease, and are great for responsive yoyos. I’ve got them in pretty much all of my yoyos that are setup responsive. But the last pack of them I bought I returned, they were all unresponsive. I’ve started making my own. Just take the shield off of the bearing, get some bearing grease (AutoZone, or hardware stores would have it), then pack the bearing with it and put the shield back on. Will stay responsive for quite a long time.