Ball Bearing 
Deep Groove Ball Bearing Thrust Ball Bearing Angular Contact Ball Bearing Self-Aligning Ball Bearing Linear Motion Ball Bearing Roller Bearing Cylindrical Roller Bearing Tapered Roller Bearing Spherical Roller Bearing Needle Roller Bearing Roller Thrust Bearing Carrier Roller,Track Roller and Idler Roller Automotive Bearings Clutch Release Bearings Wheel Hub Bearings King Pin Kit Hub Unit Water pump bearings Tensioner & Idler Bearings Automotive Air Conditioner Bearings Steering Wheel Bearings Universal Joint Kit Mast Guide Bearings(Forklift Bearings) Bearing Housing Plain Bearing Block Housing Plummer Block Insert ball bearing units Pressed Steel Housing Bearing Insert Adapter Sleeves and Withdrawal Sleeves Lock Nuts Lock Washer Spherical Plain Bearing & Rod End Radial Spherical Plain Bearings Maintenance-Free Radial Spherical Plain Bearings Angular Contact Spherical Plain Bearings Spherical Plain Thrust Bearings Rod Ends Ball Joint Rod Ends Ceramic & Plastic Bearing Ceramic Bearings Plastic Bearings Self Lubricated Sliding Bearing DU Self-Lubricating Bearing SF-1 FB bronze Self-Lubricating Bushes "DX" Boundary Lubricating Bearing FR PTEE Soft Stripe Bushes FZ Ball Retainer Bearings Bimetal Sliding Bearings FU Sintered Bearing With Oil LZ Slide Units Linear Bearing JDB Solid-lubricant Bearings PTEE Bearing or Bush Slew Bearing Single-row Four Point Contact Ball Slewing Bearing Cross Roller Slewing Bearings Double-Row Ball Slewing Bearings Three-Row Roller Slewing Bearings Special & Non Standard Bearings Special Ball Bearings Special Industrial Bearings 
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Freerun is a specialized manufacturer of Konkave/Concave Yoyo Bearings, Flat yoyo ball bearings,ceramic yoyo bearings, stainless yoyo bearings.
Bearings is the part in between the 2 sides of the yoyo and is fitted onto a axle.
So good bearings are very important to a spin of YoYo. FreeRun can supply you this kind of high quality bearings.
1.YOYO BEARING CONFIGURATION
Konkave/Concave Bearings
Flat Bearings
2.YOYO BEARING MATERIAL:
Freerun Chrome Yoyo Bearings
It have long been the industry standard for Yoyo enthusiasts the world over. These bearings have chrome steel races, balls, retainers and shields.
Stainless Steel Yoyo Bearings
Ceramic ball yoyo bearings
3.YOYO BEARING SIZES:
Size A 5mm x 10mm x 4mm MR105-KK
Size D 5mm x 11mm x 5mm. (0.196" x 0.433" x 0.196") 685KK
Size A 5mm x 10mm x 4mm MR105ZZ,SMR105ZZ,MR105-2RS,SMR105-2RS,MR105ZZ/C,SMR105ZZ/C,MR105-2RS/C,SMR105-2RS/C
Size D 5mm x 11mm x 5mm. (0.196" x 0.433" x 0.196") 685ZZ,S685ZZ,685-2RS,S685-2RS,685ZZ/C,S685ZZ/C,685-2RS/C,S685-2RS/C
Size L 6mm x 13mm x 5mm. (0.2362" x 0.5118" x 0.1969")686ZZ,S686ZZ,686-2RS,S686-2RS,686ZZ/C,S686ZZ/C,686-2RS/C,S686-2RS/C
Size E .156 x .313 x .125 ( 5/32" x 5/16" x 1/8" , 3.96875mm x 7.9375mm x 3.175mm) R155ZZ,SR155ZZ,R155-2RS,SR155-2RS,R155ZZ/C,SR155ZZ/C,R155-2RS/C,SR155-2RS/C
Size B .250 x .375 x .125 ( 1/4" x 3/8" x 1/8" , 6.45mm x 9.525mm x .3.175mm ) R168ZZ,SR168ZZ,R168-2RS,SR168-2RS,R168ZZ/C,SR168ZZ/C,R168-2RS/C,SR168-2RS/C
Size G .187 x .375 x .125 ( 3/16" x 3/8" x 1/8" , 4.7625mm x 7.9375mm x 3.175mm ) R166ZZ,SR166ZZ,R166-2RS,SR166-2RS,R166ZZ/C,SR166ZZ/C,R166-2RS/C,SR166-2RS/C
Size I .125 x .312 x .140 ( 1/8" x 5/16" x 9/64" , 3.175mm x 7.9248mm x 3.556mm ) R2-5ZZ,SR2-56ZZ,R2-5-2RS,SR2-5-2RS,R2-5ZZ/C,SR2-5ZZ/C,R2-5-2RS/C,SR2-5-2RS/C
Size 5mm x 9mm x 3mm MR95ZZ,SMR95ZZ,MR95-2RS,SMR95-2RS,MR95ZZ/C,SMR95ZZ/C,MR95-2RS/C,SMR95-2RS/C
4.YOYO BEARING APPLICATION:
Dif-E-Yo 3YO3 Yo-yos Crucial One Drop YoYos HSpin Yo-yos
throw-yoyo the-yo ILOVEYOYO C3yoyo yoyonation Yomgea
Werrd Yo-yos Anti-Yo MadHouse Bird in Hand YoYoSam
God-Tricks Turning Point Type 8 AP Yo-yos
Fine Wooden Yo-yos Team Losi Yo-yos Timcor Yo-yos
According to our sales experience, Dry or Oil Bearings will be good choice for YoYo.
In an attempt to improve performance of these bearings,are specially designed for competitive yoyo enthusiasts. Competitive players sought out high ABEC bearings made of high grade materials such as stainless steel. The higher the ABEC rating, the lower the friction and smoother and faster roll. ABEC ratings are given in odd numbers only 1,3,5,7 and 9.
Today, ceramic bearings are the hottest thing in yoyo technology. They are lighter, smoother, stiffer, harder, and corrosion resistant. These characteristics allow for a wide range of performance enhancements in bearings. Ceramic dissipates heat quickly, reducing friction and wear while maintaining a precision smooth surface. Today's leading edge ceramics are made with Silicon Nitride (Si3N4) and have characteristics similar to the heat absorbing, highly resilient tiles on the Space Shuttle.Yoyo Ceramic Bearings are specially designed for competitive Yoyo enthusiasts.
Size C .250 x .500 x .187 (1/4" x 1/2" x 3/16") R188KK
Size C .250 x .500 x .187 ( 1/4" x 1/2" x 3/16" , 6.35mm x 12.7mm x4.7625mm) R188ZZ,SR188ZZ,R188-2RS,SR188-2RS,R188ZZ/C,SR188ZZ/C,R188-2RS/C,SR188-2RS/C
Duncan Xcube YoYoFactory YoYoJam YOYOSKEEL
SPYY CLYW Aero-Yo Custom Yo-Yos Henry's Yo-Yos
Tom Kuhn Yo-yos General-Yo Spintastics Yo-yos Chico Yo-Yo
Active People G-Squared Hot-Yo Magic Yo Pocket Pros
String Theory Oxygene YoYos Shinwoo Yo-yos Dream Yo
YoYoJoker Rec Rev Razor Pocket Pros Yoyos BGT
Cold Metal Aerobie Dot sOMEThING by YoYoAddict
TMBR Playsam Play Audley Adegle Klutz
Small Minds Playmaxx Mister Babache Spin Dynamics Rebel YoYos
Carbibou Lodge yoyorecreation 27 Clothing Recreactional Revolution
Ten YoYo VS Newton
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