Tripeak 6702 LLB Steel Bearing | ABEC 3 15x21x4MM

Tripeak 6702 LLB Bearing - Session Brazil

Specifications:

• Dimensions: 15 x 21 x 4
• Used in wheel hubs and freehubs
• Used on DT-Swiss (roval) hubs

ABEC 3 steel ball bearing with 15mm inner diameter, 21mm outer diameter, 4mm 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 after 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 labyrinth seal. “LLB” literally stands for “Two Rubber Seals”

ABEC 3 bearings use grade 10 chromium steel balls and 52100 high carbon chromium alloy races.
High precision balls are within 10/1,000,000″, twice as round as the industry standard, at the highest level.
Alloy races are made from a vacuum degassed process of the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for precise and quiet ABEC-3 movement. Riveted steel retainer means toughness, ABEC-3 tolerances and noise tested, C-3 or CN Internal Clearance.