# Questions about CT bearings **URL:** \ **Category:** General Yo-Yo\ **Created:** [December 6, 2014, 7:24am UTC](https://forums.yoyoexpert.com/t/questions-about-ct-bearings/71179 "2014-12-06T07:24:09Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Zareli](https://avatars.discourse-cdn.com/v4/letter/z/b3f665/32.png) [@Zareli](https://forums.yoyoexpert.com/u/Zareli)\ **Post date:** [December 6, 2014, 7:24am UTC](https://forums.yoyoexpert.com/t/questions-about-ct-bearings/71179/1 "2014-12-06T07:24:09Z")
Hi community, I have some questions about Center track bearings. Is CBC owned by Yoyofactory ? I understand they have 3 kinds of size C bearings, the 8ball CT, the 10ball CT and the CTX. Does the CTX come already unshielded ? All CTX are 10-ball ? Whats the difference between regular CT and CTX ? Are there actually only 2 kinds of C size CT bearings ? Regular CT 8ball and CTX 10ball ? Is the 10ball CT actually the same as the CTX ? I ask because I’m kinda confused. A while ago I got a Marbled Northstar that came with a shielded CT bearing. I unshielded it and noticed it was actually a 10ball bearing, I was kinda confused because I had heard that \*stars came with normal 8ball CTs. Today I got 2 Onestars upgraded with CTs. I was expecting 10ball bearings (like the northstar) but instead they both were 8ball CTs. Is it normal to get 10ball bearings with Northstars or was it an special case ? Well thanks for the answers in advance. ---
**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:** [December 6, 2014, 10:06am UTC](https://forums.yoyoexpert.com/t/questions-about-ct-bearings/71179/2 "2014-12-06T10:06:59Z")
Nothing wrong with asking questions. Most people either ask questions or make statements; obviously… It’s a Forum. But that being understood; did you ever consider emailing Yoyofactory and asking them these questions? Might be a more effective way to ‘get some answers’. They are pretty handy at knowing a lot of stuff about their own Products. ---
**Author:** ![kadabrium](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/kadabrium/32/1522_2.png) [@kadabrium](https://forums.yoyoexpert.com/u/kadabrium)\ **Post date:** [December 6, 2014, 3:03pm UTC](https://forums.yoyoexpert.com/t/questions-about-ct-bearings/71179/3 "2014-12-06T15:03:58Z")
Individually sold CT are always 8 ball shielded, typically single (crown) cage, but can also occasionally have double (riveted) cage. Individually sold CTX are always 10 ball lubed and shieldless. CT+shaped bearings that come stock with yoyos can be any of the above 3 variations, but most are shielded.