In FR vehicles, the engine power is transmitted to the rear differential gear via the propeller shaft. The fact that the center bearing used to support the propeller shaft is located on the vehicle’s exterior gives rise to a demand for optimal mud and turbid water resistance in addition to maintaining fast rotational speeds.
Due to the large speed-reduction gear ratio of the rear differential gear that conveys engine power to the rear wheels, a large gear-interlocking load affects the bearings that provide support for the pinion gear and the ring gear. In particular, bearings that support the pinion gear require low torque and high durability since these bearings rotate at the same speed as the propeller shaft.
Long Life Coupling Support Bearings for 4WD Vehicles
Thin walled and large diameter bearings for 4WD coupling. These bearings with large bore and minimized outer diameter have superior heat resistance, high load capacity, and good sealing performance against mud and turbid water.