Abstract: A nose cone bearing arrangement for securing an axle box to a frame cross-tube of an off-road machine is provided. The axle box has an internal cylindrical bearing cavity therein. A metal double truncated spherical bearing surface is formed on and encompasses a truck frame cross-tube. A toroidal oil impregnated plastic bearing member having an external cylindrical surface is received within and conforms to the axle box internal bearing cavity. The plastic bearing has an internal concave bearing surface that engages the cross-tube spherical bearing surface.

Abstract: A cab for rollover protection of a driver of a large off-road machine in which the machine has a frame with a longitudinal axis in the direction of normal travel, the cab being formed of a superstructure of a generally rectangular box configuration, one lower edge of the cab superstructure being pivotally affixed to the machine frame about an axis of pivotation substantially parallel to the vehicle frame longitudinal axis and a limited displacement shock absorber attaching the cab superstructure other edge to the machine frame so that thereby in the event of rollover of the vehicle, the shock absorber absorbs energy to reduce the possibility of collapse of the superstructure to thereby provide increase safety to the machine operator.