Abstract: There is provided an exercise machine including a frame, a wheel assembly rotatably mounted to the frame and an actuating assembly operatively connected to the wheel assembly, the actuating assembly being operable by a user to urge rotation of the wheel assembly. The frame includes a wheel mounting member having a central opening defined therein for mounting the wheel assembly to the frame. A central mounting plate is sized and shaped for engaging the central opening, the central mounting portion having a concave indent defined therein for rotatable receiving a wheel axle part of the wheel assembly.

Abstract: There is provided an exercise machine comprising a frame, a wheel assembly rotatably mounted to the frame, an actuating assembly operatively connected to the wheel assembly, the actuating assembly being operable by a user to urge rotation of the wheel assembly, wherein at least one of the wheel assembly and the actuating assembly comprises a first member, a second member pivotably connected to the first member and a first plain bearing element slidably mounted between the first member and the second member to enable frictionless pivoting of the first member relative to the second member. There is also provided a pivoting assembly for use with an exercise machine.