Abstract: A cutting assembly for a mining machine includes a mount configured to move about a first axis relative to a chassis of the mining machine and a ranging arm coupled to the mount. The ranging arm is moveable relative to the mount. The cutting assembly includes a cutting head having a housing coupled to the ranging arm. The housing is moveable relative to the ranging arm. The cutting head includes a drum supported for rotation relative to the housing about a rotational axis, a plurality of cutting bits coupled to the drum, and at least one motor supported by the housing to drive the drum about the rotational axis.

Abstract: A cutting assembly for a mining machine includes a mount configured to move about a first axis relative to a chassis of the mining machine and a ranging arm coupled to the mount. The ranging arm is moveable relative to the mount. The cutting assembly includes a cutting head having a housing coupled to the ranging arm. The housing is moveable relative to the ranging arm. The cutting head includes a drum supported for rotation relative to the housing about a rotational axis, a plurality of cutting bits coupled to the drum, and at least one motor supported by the housing to drive the drum about the rotational axis.

Abstract: A cutting assembly for a mining machine includes a mount configured to move about a first axis relative to a chassis of the mining machine and a ranging arm coupled to the mount. The ranging arm is moveable relative to the mount. The cutting assembly includes a cutting head having a housing coupled to the ranging arm. The housing is moveable relative to the ranging arm. The cutting head includes a drum supported for rotation relative to the housing about a rotational axis, a plurality of cutting bits coupled to the drum, and at least one motor supported by the housing to drive the drum about the rotational axis.

Abstract: A wheel unit includes a suspension housing having a pin defining a steering axis, a transmission housing pivotable about the steering axis, a wheel rim rotatable about a rotational axis and configured to pivot about the steering axis, and a coupled compound planetary transmission drivingly engaged with the wheel rim. The coupled compound planetary transmission includes an input drive shaft, a sun gear rotatable about the rotational axis, a constant velocity joint coupled between the input drive shaft and the sun gear, a first ring gear fixed relative to the transmission housing, a first planet gear enmeshed with the sun gear and the first ring gear, a second ring gear fixed relative to the wheel rim for co-rotation about the rotational axis, a second planet gear enmeshed with the second ring gear, and a shaft coupling the first planet gear and the second planet gear for co-rotation.

Abstract: A wheel unit includes a suspension housing having a pin defining a steering axis, a transmission housing pivotable about the steering axis, a wheel rim rotatable about a rotational axis and configured to pivot about the steering axis, and a coupled compound planetary transmission drivingly engaged with the wheel rim. The coupled compound planetary transmission includes an input drive shaft, a sun gear rotatable about the rotational axis, a constant velocity joint coupled between the input drive shaft and the sun gear, a first ring gear fixed relative to the transmission housing, a first planet gear enmeshed with the sun gear and the first ring gear, a second ring gear fixed relative to the wheel rim for co-rotation about the rotational axis, a second planet gear enmeshed with the second ring gear, and a shaft coupling the first planet gear and the second planet gear for co-rotation.