NPB® Bearings provide Yoyo Bearings Features :
Shield / Closure: Open,Teflon Sealed,Rubber Seals,2 Metal Shield
Tolerance codes: ABEC-3, ABEC-5, ABEC-7,ABEC-9
Material: AISI52100, AISI440C,Ceramic Ball
Stainless Steel Yoyo Bearings
In an attempt to improve performance of Yoyo bearings, competitive players sought out high ABEC bearings made of high grade materials such as stainless steel. The term ABEC stands for Annular Bearing Engineering Council. 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.
Ceramic Ball Bearings
Today, ceramic bearings are the hottest thing in yoyo bearings 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.
5mm x 10mm x 4mm – The A bearing fits most Duncan, Playmaxx, YoYoFactory, ZanNavi and many other yo-yos.
.250 x .375 x .125 (1/4″ x 3/8″ x 1/8″) – This bearing fits small bearing YoYoJam yo-yos, including SpinFaktors (but not the HG), Kamaitachi, Sunset Trajectory and Matrixx. It also fits the SuperYo Renegade, and the Spintastics Revolver and Eclipse.
.250 x .500 x .187 (1/4″ x 1/2″ x 3/16″) – Fits the large bearing YoYoJam yo-yos including the Hitman, Lyn Fury, Spinmaster 2 and 3, Big Ben, Patriot, Nightmoves 2 and 3, Shockwave 3, the Speeder and the Speedmaker, as well as the YoYoFactory G5 and 888.
5mm x 11mm x 5mm – Fits B.I.S.T., HSpin and SPYY yo-yos.
.156 x .312 x .125 (5/32″ x 5/16″ x 1/8″) – Fits the Spintastics Tornado, Tigershark, Riot, Great White, Comet, Torch, and Firefly, and Yomega ball bearing yo-yos.