Abstract: The disclosure relates to a track roller for guiding a track of a tracked vehicle including a shaft extending in an axial direction, the shaft having a central portion and two axial end portions axially adjacent to the central portion on each side, wherein a transversal through-hole is provided in each axial end portion of the shaft, a roller shell mounted on the central portion of the shaft in a rotatable manner, two annular retainer caps fitted to the shaft, and sealing arrangements located between each of the retainer caps and the roller shell, wherein the shaft is flattened at least in a region of its axial end portions in such a way that at least one support surface which includes the through-hole is provided at each end portion for mounting the track roller to an undercarriage of the tracked vehicle, and the retainer caps are arranged within the central portion of the shaft in their entirety, and an undercarriage of a tracked vehicle comprising such a track roller.

Abstract: A monitoring system is disclosed for automatically estimating and monitoring the alignment of tracks of a track-type vehicle. The track-type vehicle includes an undercarriage and two tracks. Each track includes a chain with a plurality of chain links and articulated joints. The monitoring system includes at least one undercarriage sensor fixable on the undercarriage, at least one chain sensor fixable on the chain of each of the two tracks, and a processor configured to combine the detections of the sensors to determine the alignment direction of the tracks and to compare the determined direction with a reference alignment direction.

Abstract: A track link is fixable to a track shoe with nuts and bolts. The track link comprises connecting holes that are spaced in a link pitch direction and receive connection members, first and second through holes that extend orthogonally to the connecting holes and receive bolts, a first surface in which the first through hole opens and on which a first nut is positionable, a second surface in which the second through hole opens and on which a second nut is positionable, first projecting portions that project from the first surface and face each other across the first through hole, and second projecting portions that project from the second surface and face each other across the second through hole. Only one of the first projecting portions engages the first nut. At least one of the second projecting portions engages the second nut that is positionable between the second projecting portions.

Abstract: A heavy-duty vehicle may include a crawler track on which a rest of the vehicle can roll so as to move. A sensor may be configured to detect a physical quantity of the crawler track, of the heavy-duty vehicle, or of the environment contained by or surrounding the crawler track or the heavy-duty vehicle. A power supply unit may be configured to supply the sensor with electric power. The power supply unit comprises a rectenna configured to receive electromagnetic power from an external electromagnetic source and to supply the sensor with at least part of the electromagnetic power.

Abstract: A monitoring system is disclosed for automatically estimating and monitoring the alignment of tracks of a track-type vehicle. The track-type vehicle includes an undercarriage and two tracks. Each track includes a chain with a plurality of chain links and articulated joints. The monitoring system includes at least one undercarriage sensor fixable on the undercarriage, at least one chain sensor fixable on the chain of each of the two tracks, and a processor configured to combine the detections of the sensors to determine the alignment direction of the tracks and to compare the determined direction with a reference alignment direction.