A tracked vehicle with a chassis comprising an upper frame structure connected to a lower frame structure, the lower frame structure spanning a longitudinal distance along a longitudinal direction of the vehicle, wherein over a first portion of the longitudinal distance, the lower frame structure overlaps with the upper frame structure and wherein over a second portion of the longitudinal distance, the lower frame structure does not overlap with the upper frame structure. The tracked vehicle may also comprise an operator cabin, power plant mounted to the upper frame structure and a plurality of track assemblies for traction of the tracked vehicle. Each track assembly is mounted to the lower frame structure of the chassis and comprises a drive wheel; an end wheel; and a plurality of support wheels therebetween; and an endless track disposed around the plurality of wheels for engaging a ground on which the tracked vehicle travels.

A wheel assembly for a track system of a light heavy-duty vehicle is disclosed. The track system has a frame and an elastomeric endless track. The wheel assembly includes a wheel, an axle and first and second bearings. The wheel defines a wheel cavity in which the axle is receivable. The first and second bearing assemblies are disposed in the wheel cavity. The first bearing assembly is at a first end portion of the axle, and the second bearing assembly is at the second end portion of the axle. The wheel assembly is removable connectable to the frame of the track system. A track system and a light heavy-duty vehicle are also disclosed.

An endless track for propelling a snowmobile. The endless track includes an inner drive surface, and an outer ground-engaging surface opposite to the inner drive surface. A plurality of reinforcing rods each extend along a track width in rod rows and are spaced apart at a drive pitch length along a track length. A plurality of treads each extend from the outer ground-engaging surface and are spaced apart at a tread pitch length along the track length. At least two of the plurality of reinforcing rods have different lengths.

An endless track for a tracked vehicle includes a track body and a plurality of cores at least partially embedded the track body, each core having at least one roller surface configured to contact an outer flange of a track roller when the track roller is engaged with an inner surface of the track body, and at least one protrusion configured to contact an inner flange of the track roller when the track roller is engaged with the inner surface of the track body. The track roller is configured to simultaneously contact a first core and an adjacent second core. A distance between the first core and the second core is selected such that about 0.2% of a flange diameter of the track roller extends perpendicular to an axis between a first contact point on the first core and a second contact point on the second core.

An elastic crawler with excellent durability is provided. The elastic crawler of the present disclosure includes a crawler body (2) made of an elastic material, and a plurality of protrusions (3) arranged on an inner circumferential surface (21) of the crawler body (2). The protrusions (3) each include an elastic material portion (31) and a resin member (32). The resin member (32) includes a crawler widthwise side face portion (321). The side face portion (321) has a crawler thicknesswise end face (325A) configured to form a boundary surface (BS) with the elastic material portion (31). The end face (325A) has a concave or convex shape in a crawler widthwise view.

To prevent vertical vibration of track rollers as much as possible when transferring between overhanging portions of each core metal while securing the flexibility of a crawler main body.

The present invention includes core metals 10 embedded in a crawler main body 9 at substantially equal intervals, and rolling paths 12, 13 for track rollers arranged on both sides in a crawler width direction of an anti-tread side of the crawler main body 9, and includes overhanging portions 24 to 27 on both sides in a crawler rotation direction of each core metal 10, overhanging from each core metal 10 toward both sides in the crawler rotation direction to support each of the rolling paths 12, 13. The respective overhanging portions 24 to 27 corresponding to the respective rolling paths 12, 13 of each core metal 10 are arranged such that at least tip portions are arranged so as to shift in the crawler width direction within a width of each rolling path 12, 13. Of each of the core metals 10, the overhanging portion 25 of one core metal 10 and the overhanging portion 26 of the other core metal 10 are arranged such that their tips are close to each other or overlap with each other in the crawler rotation direction.

An endless track for propelling a snowmobile. The endless track includes an inner drive surface and an outer ground-engaging surface opposite to the inner drive surface. A first side surface is opposite to a second side surface. A plurality of first side lugs are adjacent to the first side surface. A plurality of second side lugs are adjacent to the second side surface. The plurality of first side lugs and the plurality of second side lugs provide traction when the snowmobile is operated off-axis and tilted on its side as well as provides traction surfaces on additional planes other than the outer carcass of the endless track when the track is submerged in the snow.

Track system to be mounted on a vehicle in place of a rotatable OEM tire/wheel assembly, including: A frame. A drive wheel is rotatably mounted on the frame, operatively connectable to the drive shaft of the vehicle, and has a diameter of between 65% and 100% of the OEM tire diameter. Leading and trailing idler wheel assemblies are mounted on the frame. An endless track having an inner surface is disposed around the drive wheel, the leading and trailing idler wheel assemblies. The endless track has an unsupported portion between the drive wheel and one of the leading and trailing idler wheel assemblies. The unsupported portion has a length and a center. The unsupported portion deflects a distance of between 8% and 12% of its length on application of a 25-lb. force at its center.

A track system for traction of a vehicle comprising a track to engage the ground and comprising elastomeric material, a ground-engaging outer side and an inner side opposite to the ground-engaging outer side. The track system also comprises a track-engaging arrangement for driving and guiding the track around the track-engaging arrangement, which comprises: a drive wheel for movement of the track; a leading idler wheel and a trailing idler wheel spaced apart in a longitudinal direction of the track system, and a plurality of roller wheels between the idler wheels. The track system also comprises a frame supporting the idler and roller wheels. The track system also comprises a plurality of mounts spaced apart in the longitudinal direction of the track system to interconnect the frame of the track system to the vehicle frame, and allow movement of the frame of the track system relative to the vehicle frame.

A track for a track system has a ground-facing side and a wheel-facing side including lugs having a base and defining a wheel path on which wheels of a track engaging assembly rolls on, the wheel path having first and second track side portions, and an intermediate track portion. When the wheel supports a load smaller than a nominal load, a distance between the base and the ground-facing side is smaller than a distance between the intermediate track portion and the ground-facing side. When the wheel supports a load equal or greater than the nominal load, a distance between the base and the ground-facing side is substantially equal to or smaller than a distance between the intermediate track portion and the ground-facing side. A wheel for a track system is also described. A track system comprising a wheel and a track is also described.