Tripeak Mr 18287 LLB Steel Bearing | ABEC3 18x28x7MM

Tripeak 18307 LLB Bearing - Session Brazil

Specifications:
- Dimensions: 18 x 30 x 7
- Used in wheel hubs and freehubs

ABEC 3 steel ball bearing with 18mm inner diameter, 30mm outer diameter, 7mm thickness and LLB seal.
ABEC 3 precision bearings with Grade 10 steel balls and cryogenically treated chrome steel bodies.
LLB sealing system - two sealing lips on each sealant, which ride in a corresponding groove in the inner race to make a labyrinth seal.
The outer sealing lip repels dirt/water, while the inner seal retains grease. These seals essentially form a “Hydromatic Grease Seal” when in operation, the grease forming a barrier in the groove.
The letters following the bearing number designate the type of seals that are used in the bearing. “LLB” is a double lip type seal that makes light contact and also passes through a groove that forms a labrinth seal. “2RS” literally means “Two Rubber Seals”