46AX539
Deep Groove Radial Ball Bearing, 72 mm OD
Mack

This deep groove radial ball bearing provides dependable, high-speed support for rotating components in heavy-duty trucks. With a 72 mm outer diameter, it is engineered to handle substantial radial loads while tolerating moderate axial loads, making it suitable for wheel-end assemblies and drive-line applications common on Mack vehicles. Precision-ground races, a hardened steel cage, and high-grade ball bearings contribute to low friction, reduced heat buildup, and long service life under challenging road conditions. The design excels in applications where speed, durability, and smooth rotation are essential, helping to minimize vibrations and noise that can propagate through drivetrains. When replacing, verify outer diameter, bore size, and any seal or shield options required by your hub or housing. Proper installation includes cleaning seating surfaces, applying the correct lubricant per OEM spec, and ensuring correct preload and alignment during mounting. Source One Parts Center notes these bearings are a staple for long-lasting performance in many axle and wheel assemblies.