Enduro bearings mra 1728 llb a5 - abec 5 (angular contact) - 17x28x7

MRA 1728 LLB - ABEC-5 Angular Contact Bearing (C3 Clearance) - 17mm x 28mm x 7mm Improve your cycling performance with the MRA 1728 LLB angular contact bearing, primarily intended for hub applications and also suitable as a spindle bearing. This ABEC-5 precision bearing features deep-groove races, Grade 10 balls, and dual-lip labyrinth (LLB) seals that resist the elements and daily use. It is filled with 90% Mobilux NGLI 2 high-pressure waterproof synthetic grease. When installed correctly (black seal lip facing inwards) and properly adjusted, Enduro angular contact bearings ensure all balls make contact, distributing force over a larger surface area and extending lifespan. Available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid, and XD-15 with ceramic or stainless steel balls. The bearings are designed with deep-groove races to accommodate larger balls and feature dual-lip seals for superior protection against the elements. Static load capacity: 488 lbf / 2.17 kN, weight: 13.6 grams.