This new bearing is similar to the original Bones® Swiss bearing, but with a redesigned inner race and two labyrinth seals to keep dirt out even better than before. Bones Labyrinth shields are non-contact, so that they do not increase friction, only the distance dirt particles must travel to get past the shields. The only difference you will notice is that the labyrinth shield Bones will last several times longer than the original Bones Swiss between cleanings.
These are the Labyrinth Swiss Bearings from Bones Bearings
Details:
Double labyrinth non-contact, removable rubber shields allow easy cleaning and low friction. High speed Nylon® ball retainer provides added speed and strength. Pre-lubricated with Speed Cream™ racing lubricant. Skate Rated™ clearances, tolerances, materials and lubricant provide the best performance and durability possible.
