A1-1228V1270
Bearing Set, 170 mm OD, 110 mm ID
Meritor

An integrated bearing pair designed for high-stress rotary environments, this set comprises the outer ring and inner bearing components that work together to support radial load while accommodating axial motion as required by the application. The specified outer and inner dimensions indicate the envelope in which the lubrication seal and raceways operate, guiding the correct seating of seals and retainers that keep contaminants out. The design emphasizes lubrication retention, heat dissipation, and quiet operation under load, contributing to efficiency and comfort in the cab. Precision manufacturing ensures uniform contact stress distribution, reducing wear and extending service life of both wheel hubs and associated axles. The set is typically replaced as a matched pair to preserve bearing preload, alignment, and vibration characteristics, which matter for predictable steering behavior and tire wear. By choosing a properly matched set, technicians can maintain consistent braking and handling metrics because bearing performance under load remains stable. Routine checks, cleanliness during assembly, and using the recommended lubricant helps maximize durability in varied climates and road conditions.