we make high speed ball bearing for yoyo,the most pop shape is U Groove as followings.
we also make other shapes for choice as followings.
V Groove
T Groove
| ITEM | r188v,r188u,r188kk |
| bore diameter(d) | 6.35mm |
| outside diameter(D) | 12.7mm |
| Width(B) | 4.762mm |
| TYPE | open |
| MATERIAL | 9Cr18 |
| GREASE | NO GREASE |
| MEMO | WIDELY USED IN HIGH PRECISION YOYO |
| ITEM | shape dimension | ||||||
| Bore Diameter | Outer Diameter (D) | Flange outer Diameter | width for open bearing | flanged Width for open bearing | width for shield bearing | flanged Width for open bearing | |
| d | D | Df/Df1 | B | Bf | B1 | Bf1 | |
| 682zz | 2 | 5 | 6.1 | 1.5 | 0.2 | 2.3 | 0.6 |
| MR52zz | 5 | 6.2 | 2 | 0.6 | 2.5 | 0.6 | |
| 692zz | 6 | 7.5 | 2.3 | 0.6 | 3 | 0.8 | |
| MR62zz | 6 | 7.2 | 2.5 | 0.6 | |||
| MR72zz | 7 | 8.2 | 2.5 | 0.6 | 3 | 0.6 | |
| 602zz | 7 | 8.5 | 2.8 | 0.7 | 3.5 | 0.9 | |
| 682Xzz | 2.5 | 6 | 7.1 | 1.8 | 0.5 | 2.6 | 0.8 |
| 692Xzz | 7 | 8.5 | 2.5 | 0.7 | 3.5 | 0.9 | |
| 8 | 9.2 | 2.5 | 0.6 | 2.5 | |||
| 602Xzz | 8 | 9.5 | 2.8 | 0.7 | 4 | 0.9 | |
| MR63zz | 3 | 6 | 7.2 | 2 | 0.6 | 2.5 | 0.6 |
| 683zz | 7 | 8.1 | 2 | 0.5 | 3 | 0.8 | |
| MR83zz | 8 | 9.2 | 2.5 | 0.6 | |||
| 693zz | 8 | 9.5 | 3 | 0.7 | 4 | 0.9 | |
| MR93zz | 9 | 10.2 | 2.5 | 0.6 | 4 | 0.8 | |
| 603zz | 9 | 10.5 | 3 | 0.7 | 5 | 1 | |
| 623zz | 10 | 11.5 | 4 | 1 | 4 | 1 | |
| MR74zz | 4 | 7 | 8.2 | 2 | 0.6 | 2.5 | 0.6 |
| MR84zz | 8 | 9.2 | 2 | 0.6 | 3 | 0.6 | |
| 684zz | 9 | 10.3 | 2.5 | 0.6 | 4 | 1 | |
| MR104zz | 10 | 11.2 | 3 | 0.6 | 4 | 0.8 | |
| 694zz | 11 | 12.5 | 4 | 1 | 4 | 1 | |
| 604zz | 12 | 13.5 | 4 | 1 | 4 | 1 | |
| 624zz | 13 | 15 | 5 | 1 | 5 | 1 | |
| 634zz | 16 | 18 | 5 | 1 | 5 | 1 | |
| MR85zz | 5 | 8 | 9.2 | 2 | 0.6 | 2.5 | 0.6 |
| MR95zz | 9 | 10.2 | 2.5 | 0.6 | 3 | 0.6 | |
| MR105zz | 10 | 11.2 | 3 | 0.6 | 4 | 0.8 | |
| MR115zz | 11 | 12.6 | - | ||||
| 685zz | 11 | 12.5 | 3 | 0.8 | 5 | 1 | |
| 695zz | 13 | 15 | 4 | 1 | 4 | 1 | |
| 605zz | 14 | 16 | 5 | 1 | 5 | 1 | |
| 625zz | 16 | 18 | 5 | 1 | 5 | 1 | |
| 635zz | 19 | 22 | 6 | 1.5 | 6 | 1.5 | |
| MR106zz | 6 | 10 | 11.2 | 2.5 | 0.6 | 3 | 0.6 |
| MR126zz | 12 | 13.2 | 3 | 0.6 | 4 | 0.8 | |
| 686zz | 13 | 15 | 3.5 | 1 | 5 | 1.1 | |
| 696zz | 15 | 17 | 5 | 1.2 | 5 | 1.2 | |
| 606zz | 17 | 19 | 6 | 1.2 | 6 | 1.2 | |
| 626zz | 19 | 22 | 6 | 1.5 | 6 | 1.5 | |
| MR117zz | 7 | 11 | 12.2 | 2.5 | 0.6 | 3 | 0.6 |
| MR137zz | 13 | 14.2 | 3 | 0.6 | 4 | 0.8 | |
| 687zz | 14 | 16 | 3.5 | 1 | 5 | 1.1 | |
| 697zz | 17 | 19 | 5 | 1.2 | 5 | 1.2 | |
| 607zz | 19 | 22 | 6 | 1.5 | 6 | 1.5 | |
| 627zz | 22 | 25 | 7 | 1.5 | 7 | 1.5 | |
| MR128zz | 8 | 12 | 13.2 | 2.5 | 0.6 | 3.5 | 0.8 |
| MR148zz | 14 | 15.6 | 3.5 | 0.8 | 4 | 0.8 | |
| 688zz | 16 | 18 | 4 | 1 | 5 | 1.1 | |
| 698zz | 19 | 22 | 6 | 1.5 | 6 | 1.5 | |
| 608z | 22 | 25 | 7 | 1.5 | 7 | 1.5 | |
| 679zz | 14 | 3 | |||||
| 689zz | 9 | 17 | 19 | 4 | 1 | 5 | 1.1 |
| 699zz | 20 | 23 | 6 | 1.5 | 6 | 1.5 | |
| 609zz | 24 | 27 | 7 | 1.5 | 7 | 1.5 | |
| 6700zz | 15 | 16.5 | 3 | 0.8 | 4 | 0.3 | |
| 6800zz | 19 | 21 | 1 | 5 | |||
| 63800zz | 19 | 21 | 1.5 | 7 | |||
| 6900zz | 22 | 25 | 1.5 | 6 | |||
Established in 2007, Zhangzhou Runstar Bearings Manufacturing Co.,Ltd is a professional manufacturer of thrust ball bearing and miniature ball bearing in Zhangzhou,China. With a inner diameter from 2mm to 15mm for metric series and from 0.0781" to 0.375" for inch series , the material can be selected with chrome steel(Gcr15) or stainless steel(9Cr18) at your request, our characteristic products are thrust ball bearing with or without groove, miniature ball bearing,flange bearing and stainless steel bearing,as well as non-standard bearings, we have more than 12 year’s experience in supplying thrust ball bearing and miniature ball bearing for industries.