608-RS Ball Bearing dimensions: Bore Diameter 8mm, Outside Diameter 22mm, Width 7mm. 100% Chrome Steel. This unique bearing design features six larger diameter balls instead of the seven balls used in most 608 bearings. The advantage of this design is higher speed, greater strength and durability. Polyamide PA66 cage ball retainer for greater strength and High Speed.
MAPLE ACE introduced RZ Type (Light Contact) Sealed Ball bearings for precisely that purpose. Developed for the racing industry, these bearings are designed to create less contact between the rubber lip of the seal and the inner ring, ultimately reducing friction and heat. Polyamide PA66 cage ball retainer for greater strength and High Speed.