A straddle mount idler assembly for use with a crawler assembly of a crawler machine. The straddle mount idler assembly includes an idler wheel positioned between inboard and outboard arms of a crawler assembly, the idler wheel fixed both rotationally and axially to an idler shaft. The wheel and shaft are fixed rotationally via locking key and axially via segmented retaining plate and bolts. The axial coupling of the wheel and shaft allows for axial thrust to be controlled outboard the crawler frame for easier access and maintenance. A sealed thrust plate assembly with a dedicated lubrication port is mounted to each bearing block. A retainer nut threadably engages the idler shaft, allowing ready tightening of the retainer when the thrust plate experiences wear, and the retaining nut is fixed to the shaft via a locking bar. A set of integrated inspection ports enable inspection and measurement of the thrust plate without splitting crawler tracks.

A track assembly is formed from an endless track, an elongate guide member, a drive sprocket, and a plurality of track engaging rollers. The endless track has an inner surface having a plurality of parallel circumferential ridges. Formed between the circumferential ridges is a circumferential channel. The guide member is at least partially positioned and closely received within the circumferential channel. The track engaging rollers are arranged in a pair of parallel rows near an outer side of each circumferential ridge. During track rotation, the guide member remains closely received within the channel, and the rollers contact the outer side of the ridges to resist lateral movement of the track. Positioning of the guide member in the circumferential channel, with the rollers outside the ridges, laterally stabilizes the track thereby reducing the risk of the track slipping off the track assembly.

An undercarriage configured to support a track chain and to be attached to a machine with an endless track drive includes a first carrier plate attached to the undercarriage, the first carrier plate including a material having a hardness of at least 45 Rockwell Scale C or greater.

A slider for a track assembly of a machine is provided. The slider includes an elongated base portion coupled to a frame and a sliding portion extending from the elongated base portion. The sliding portion includes an outer surface configured to slidably engage with a track link of the track assembly. The sliding portion includes a set of wear indicators defined in the outer surface. The set of wear indicators includes a first wear indicator and a second wear indicator. The first and the second wear indicators are located at a first predefined thickness and a second predefined thickness respectively, measured along a central axis of the sliding portion. Further, the first wear indicator indicates partial wear of the sliding portion and the second wear indicator indicates substantial wear of the sliding portion.

A snowmobile assembly including a chassis and suspension system. The suspension system configured to allow a selected suspension travel. The snowmobile further including a cooling system assembly.

A track support rail for slidably supporting a track assembly of a machine includes a body having a first body end, a second body end, a crown portion, and an upper support surface. The body extends along a longitudinal axis between the first and second body ends. The crown portion is disposed between the first and second body ends along the longitudinal axis. The upper support surface extends along the longitudinal axis between the first and second body ends. The upper support surface includes first and second curved segments. The first curved segment has a first curved shape and extends from the first body end toward the crown portion of the body. The second curved segment has a second curved shape and extends from the second body end toward the crown portion of the body. The first curved shape is different from the second curved shape.

There is provided a planar member having a flat portion that makes contact with the inner circumferential surface of an endless track at a position at a traveling subject side with respect to a virtual straight line that connects a vertex, at the traveling subject side, in the outer circumferential surface of a first pulley and a vertex, at the traveling subject side, in the outer circumferential surface of a second pulley.

A straddle mount idler assembly for use with a crawler assembly of a crawler machine. The straddle mount idler assembly includes an idler wheel positioned between inboard and outboard arms of a crawler assembly, the idler wheel fixed both rotationally and axially to an idler shaft. The wheel and shaft are fixed rotationally via locking key and axially via segmented retaining plate and bolts. The axial coupling of the wheel and shaft allows for axial thrust to be controlled outboard the crawler frame for easier access and maintenance. A sealed thrust plate assembly with a dedicated lubrication port is mounted to each bearing block. A retainer nut threadably engages the idler shaft, allowing ready tightening of the retainer when the thrust plate experiences wear, and the retaining nut is fixed to the shaft via a locking bar. A set of integrated inspection ports enable inspection and measurement of the thrust plate without splitting crawler tracks.

A magnetic track for traveling on a wall and a ceiling of a steel structure according to an exemplary embodiment of the present invention includes: a front wheel which is connected to a main body and positioned at one end; a rear wheel which is connected to the main body and positioned at the other end to face the front wheel; and a chain which is connected, in the form of a loop, to the front wheel and the rear wheel, in which multiple support devices are provided between the front wheel and the rear wheel to support the chain.

A rim includes a wall, a first annular projection, and a second annular projection. The wall has a first end and a second end. The first end includes a first opening, and the second end includes a second opening that communicates with the first opening to define a bore for a shaft of a track roller. The first annular projection and the second annular projection, which are configured to engage a track, extend radially from the wall. The first annular projection includes a first flange that is configured to constrain movement of the track in a first axial direction. The first flange includes a plurality of notches. The second annular projection includes a second flange that is configured to constrain movement of the track in a second axial direction that is opposite to the first axial direction.