YoYo Bearings

YoYo Bearing can be played in two extreme states.

One configuration involves using a thick lubricant in the ball bearing, so that sleep times will be low. This configuration is generally used for looping tricks.

The second configuration involves either running a bearing with thin lube in small amounts or cleaning the ball bearing of any lubricant – playing a “dry” bearing. Dry bearings are usually used so yo-yos will be less responsive during string trick play.

bearing and balls material:

Size A:

fits Duncan, Playmaxx, YoYoFactory, ZanNavi yo-yos.
bearing model: MR105ZZ—5*10*4mm
bearing shape: flat and konkave
konkave shape, the name is Dif-E-Yo Konkave bearing Size A, the outer surface is not flat, but slightly concave, there is a groove on outer ring that centers the string.

Size B:

fits small bearing YoYoJam yo-yos, including SpinFaktors, Kamaitachi, Sunset Trajectory and Matrixx. It also fits the SuperYo Renegade, Spintastics Revolver and Eclipse.
bearing model: R168ZZ—1/4″*3/8″*1/8″
bearing shape: flat

Size C:

fits large bearing YoYoJam yo-yos, including Hitman, Lyn Fury, Spinmaster, Big Ben, Journey, Patriot, Nightmoves, Shockwave, Speeder, as well as YoYoFactory G5, 888, Skyline, Grind Machine.
bearing model: R188ZZ—1/4″*1/2″*3/16″
bearing shape: flat and konkave
Dif-E-Yo Konkave Bearing Size C is the mega popular konkave bearing made by Frank Difeo. The outer surface is not flat, but slightly concave, there is a groove on outer ring that centers the string.