Abstract: A support rail for a swing gear assembly having a thrust rail coupled to a swing gear includes a substantially horizontal first surface configured to be coupled to the swing gear such that the first surface engages a substantially horizontal top face of the swing gear, and a substantially vertical second surface intersecting the substantially horizontal first surface such that the second surface is substantially perpendicular to the first surface. The second surface is configured to engage a substantially vertical face of the thrust rail when the first surface is coupled to the swing gear. The first surface and the second surface are configured to inhibit a rotation of the thrust rail relative to the swing gear by engaging the top face of the swing gear and the vertical face of the thrust rail simultaneously.

Abstract: A support rail for a swing gear includes a first flange having a first surface configured to engage a substantially horizontal top face of the swing gear, a second flange positioned opposite the first flange, and a column portion intersecting the first flange and the second flange such that the column portion is approximately perpendicular to the first and second flanges. The column portion includes a second surface configured to engage a substantially vertical inner surface of the swing gear. The first surface and the second surface are configured to substantially inhibit a rotation of the support rail relative to the swing gear by engaging the top face and the inner surface simultaneously.

Abstract: A support rail for a swing gear includes a first flange having a first surface configured to engage a substantially horizontal top face of the swing gear, a second flange positioned opposite the first flange, and a column portion intersecting the first flange and the second flange such that the column portion is approximately perpendicular to the first and second flanges. The column portion includes a second surface configured to engage a substantially vertical inner surface of the swing gear. The first surface and the second surface are configured to substantially inhibit a rotation of the support rail relative to the swing gear by engaging the top face and the inner surface simultaneously.

Abstract: A support rail for a swing gear assembly having a thrust rail coupled to a swing gear includes a substantially horizontal first surface configured to be coupled to the swing gear such that the first surface engages a substantially horizontal top face of the swing gear, and a substantially vertical second surface intersecting the substantially horizontal first surface such that the second surface is substantially perpendicular to the first surface. The second surface is configured to engage a substantially vertical face of the thrust rail when the first surface is coupled to the swing gear. The first surface and the second surface are configured to inhibit a rotation of the thrust rail relative to the swing gear by engaging the top face of the swing gear and the vertical face of the thrust rail simultaneously.

Abstract: A longwall shearer or other machine with a gear case for transmitting rotational power from a drive to a driven member. The gear case comprises a drive, a driven member, at least one axle including at least one aperture formed therein to circulate cooling fluid through the axle, and a gear mounted to rotate on the axle and positioned to transmit power from the drive to the driven member.

Abstract: A cooling system for the gear case in the ranging arm of a longwall shearer, the ranging arm including a plurality of single gears mounted in a row within an elongated housing. The cooling system includes a coolant injection system in each of the single gears, each coolant injection system including a longitudinal opening in the gear axle, and a coolant injection tube mounted inside the longitudinal opening. The coolant injection tube has a diameter smaller than the diameter of the longitudinal opening. A coolant supply line is connected to and in communication with the coolant injection tube, and a coolant outlet is connected to and in communication with the longitudinal opening adjacent the one end of the longitudinal opening, so that coolant leaving the end of the coolant injection tube travels back along the coolant injection tube and then out of the gear axle thereby removing heat from the single gear.

Abstract: A longwall shearer or other machine with a gear case for transmitting rotational power from a drive to a driven member. The gear case comprises a drive, a driven member, at least one axle including at least one aperture formed therein to circulate cooling fluid through the axle, and a gear mounted to rotate on the axle and positioned to transmit power from the drive to the driven member.

Abstract: A cooling system for the gear case in the ranging arm of a longwall shearer, the ranging arm including a plurality of single gears mounted in a row within an elongated housing. The cooling system includes a coolant injection system in each of the single gears, each coolant injection system including a longitudinal opening in the gear axle, and a coolant injection tube mounted inside the longitudinal opening. The coolant injection tube has a diameter smaller than the diameter of the longitudinal opening. A coolant supply line is connected to and in communication with the coolant injection tube, and a coolant outlet is connected to and in communication with the longitudinal opening adjacent the one end of the longitudinal opening, so that coolant leaving the end of the coolant injection tube travels back along the coolant injection tube and then out of the gear axle thereby removing heat from the single gear.