yoyo bearing SR188 U

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Part Number SR188U
Bearing type BALL
Structure Single Row
Load Direction Radial
Seal type OPEN
Bore diameter(d) 1/4″︱6.35mm
Outer diameter(D) 1/2″︱12.7mm
Width(B) 3/16″︱4.762mm
material Stainless steel 440 C(9cr18)
ring material Stainless steel 440 C(9cr18)
cage material 304  Stainless Steel
ball material Stainless steel 440 C(9cr18)
shields material 304 Stainless Steel
Grade ABEC-1(higher grade available)
Clearance C0(other clearance available)
BALL SIZE(mm)  1.588mm
lubrication grease(oil available)
Temperature Range -30℃~130℃
weight(g) 1.6
ISO9001:2015 PASSED
Dynamic Load Rating (Cr) 920 N
Static Load Rating (Cor)  355  N
yoyo bearing sr188 u

YoYo, also known as Yo Yo, is an educational toy that can exercise our hand and foot coordination. It is popular because of its simplicity, easy to learn and fun. YoYo bearing is the main core component among all YoYo accessories.The best YoYo bearings must meet the following conditions. Firstly, long enough idling time; Secondly, low noise, no extra noise during operation; Thirdly, the outer groove of winding shall be smooth enough.

Zhangzhou Runstar Bearings Manufacturing Co.;Ltd is a professional best YoYo bearings manufacturer,certified ISO9001:2015. Runstar is the first one and leader who designed and manufacture stainless steel yoyo bearings with U groove shape,in order to reduce friction, prolong idling time and make players have a better experience, Runstar bearing has specially designed and modified the YoYo Bearings the original seven balls into ten balls, which the YoYo can idle for more than 20 seconds without any counterweight.
In order to meet customers’ requirements for best Yoyo bearing shape, Runstar bearing has developed and produced U-groove YoYo Ball Bearing, V-groove YoYo Ball Bearing and T-groove YoYo Ball Bearing, as well as U-groove YoYo Ball Bearings with 8 cuts at request.

Runstar have enough experiences in designing and manufacturing high precision best yoyo bearings for yoyo,the grade is from ABEC-1 to ABEC-7 for choice.



SR188 U
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