Timken Big Pinion Bearing

The Timken Big Pinion Bearing from Diversified Machine (part number RRC-1311) is a heavy-duty steel pinion bearing engineered for use with the DMI CT-1 10-inch ring and pinion gear set. This bearing handles the radial and thrust loads generated during extreme drivetrain stress, making it essential for off-road recovery, high-performance drag applications, and extreme-duty vehicle builds where standard bearings fall short.

Constructed from premium steel, this big pinion bearing supports the larger diameter and increased load capacity of the 10-inch ring and pinion system. The material composition and bearing geometry are optimized to distribute side-loading and shock loads that occur during hard acceleration, off-road terrain transitions, and towing scenarios. When paired with the DMI CT-1 gear set, this bearing ensures reliable power transfer and extended drivetrain life under sustained high-torque conditions. Weighing 0.78 lbs with dimensions of 3.15 x 1.25 x 4 inches, the bearing integrates seamlessly into compatible differentials and axle assemblies.

This bearing is designed for builders and off-road enthusiasts who demand maximum durability from their drivetrain components. Whether upgrading a rock-crawling rig, building a competition-grade 4x4, or reinforcing a heavy-duty tow vehicle, the Timken Big Pinion Bearing addresses the need for robust, load-rated support in extreme-use applications. Proper installation and maintenance of the bearing are critical to achieving rated performance and longevity in high-stress environments.