Unit Bearing

The Dana-Spicer Unit Bearing (MPN 707374-1X) is a precision-engineered axle component designed for heavy-duty vehicle applications requiring reliable rotational support. This unit bearing assembly serves as a critical load-bearing element in drivetrain systems, providing smooth wheel rotation while maintaining structural integrity under demanding conditions. Originally engineered for commercial, industrial, and off-road vehicles, the Dana-Spicer Unit Bearing ensures consistent performance in both highway and extreme terrain environments where component durability is non-negotiable.

The Dana-Spicer Unit Bearing combines sealed bearing cartridge technology with robust steel construction to eliminate maintenance intervals and resist contamination from mud, dust, and moisture. This sealed design prevents lubricant loss and extends service life significantly compared to traditional open-bearing configurations. The assembly integrates precision-ground races and hardened steel rollers, engineered to handle radial and thrust loads simultaneously while maintaining tight tolerances essential for axle alignment and wheel balance.

Fleet operators, heavy equipment owners, and off-road enthusiasts benefit from the Dana-Spicer Unit Bearing's drop-in compatibility with Dana axle housings across light-duty, medium-duty, and heavy-duty platforms. Installation requires removal of the old bearing assembly and press-fitting the new unit using standard automotive equipment; no additional machining or modifications are necessary. This bearing is ideal for replacement in vehicles experiencing wheel hub noise, excessive play, or bearing wear—critical indicators that wheel-end integrity has been compromised and replacement is essential for safe operation.