Front axle for a truck or bus with steerable non-driving wheels

摘要

The axle arm or axle arm pin bearing is maintenance free in the lower bearing position (19) and has a sleeve (25) enclosing a twin-row needle bearing (23) on the outside which fits into the lower bearing bore (17) of the axle arm. A expansion outside on the upper end area facing the axle body is supported by its base axially on a lower boundary face of the axle arm mouth (11). The inside of the lower bearing position at the bottom is closed tight by a member to prevent direct and water from penetrating from outside to the needle bearing. The inside of the lowering position is sealed at the top by a rubber lip seal (36) and labyrinth seal for extra protection.