What is a center support bearing?
Center support bearings are usually found on heavy-duty vehicles, like trucks, that have long drive shafts. The shafts are split into two sections, with the center support bearing holding them together and supporting the weight on the rear half.
The driveshaft transfers power from the transmission to the differential in order to turn the rear wheels. The center support bearing is also called the drive shaft center support bearing or carrier bearing.
If the center support bearing wears out or breaks, the driveshaft can’t spin. This can cause problems with the transmission, drive shaft, or differential.
How do I know if my center support bearing is bad?
Your mechanic should check the center support bearings every time you bring your vehicle in for regular maintenance. If you’re between maintenance appointments, watch for these signs that the center support bearing is failing or damaged:
Squeaking or grinding sounds: The sounds will get worse and change pitch over time. Don’t ignore them! Get your center support bearing inspected.
Shuddering or shaking when you accelerate: There is vibration-damping material between the bearing and the housing. If it wears out, you’ll notice vibration throughout the entire vehicle. Get your vehicle inspected if your vehicle is shuddering or underperforming.
How often should a center support bearing be replaced?
Center support bearings can last a long time—some drivers never have to replace them. However, if you regularly drive in rough conditions or take your vehicle off-road, the bearing can wear out over the years. Generally, you only need to replace the bearing if it starts to fail.
Can I replace my center support bearing?
Most DIY mechanics find it hard to replace their own center support bearing since it’s difficult to remove and assemble the driveshaft. Plus, you’ll need a bunch of specialized tools and equipment. It’s probably a good idea to leave this one to the professionals.