A carriage assembly includes a primary frame, a first idler wheel mounted to the primary frame, and a secondary frame pivotably mounted to the primary frame. The carriage assembly further includes an idler wheel assembly coupled to the secondary frame and movable with respect to the secondary frame along a longitudinal axis of the idler wheel assembly. The idler wheel assembly includes at least one second idler wheel and at least one third idler wheel mounted to the idler wheel assembly such that the second idler wheel is located between the first idler wheel and the third idler wheel. The first idler wheel is configured to pivot with the primary frame relative to the secondary frame, and the second idler wheel and the third idler wheel are configured to move with the idler wheel assembly relative to the secondary frame along the longitudinal axis of the idler wheel assembly.

A machine system includes a roller frame and a roller assembly mounted to the roller frame. The roller assembly includes first and second clamping collars positioned upon a roller shaft and each including a lower and an upper collar section. Fasteners clamp the lower and upper collar sections to the roller shaft to form static seals. The clamping collars may be formed with splitlines to enable the clamping collars to deform so as to simulate interference fits with the roller shaft.

A machine system includes a roller frame and a roller assembly mounted to the roller frame. The roller assembly includes first and second clamping collars positioned upon a roller shaft and each including a lower and an upper collar section. Fasteners clamp the lower and upper collar sections to the roller shaft to form static seals. The clamping collars may be formed with splitlines to enable the clamping collars to deform so as to simulate interference fits with the roller shaft.

A track system connectable to an axle of a vehicle has a track engaging assembly and an endless track. The track engaging assembly includes a frame, a drive wheel, front and rear idler wheel assemblies, a bogie assembly and a plurality of support wheel assemblies which includes leading, intermediate and trailing wheel assemblies that respectively apply leading, intermediate and trailing ground forces to a ground surface. A sum of the leading, intermediate and trailing ground forces defines a total ground force. The track system has an initial position wherein the total ground force is concentrated at the intermediate ground force, when the track system is at rest on a hard and flat level ground surface. In response to the bogie assembly pivoting about the bogie assembly axis, the total ground force is distributed between the intermediate ground force and at least one of the leading and trailing ground forces.

A track system connectable to an axle of a vehicle has a track engaging assembly and an endless track. The track engaging assembly includes a frame, a drive wheel, front and rear idler wheel assemblies, a bogie assembly and a plurality of support wheel assemblies which includes leading, intermediate and trailing wheel assemblies that respectively apply leading, intermediate and trailing ground forces to a ground surface. A sum of the leading, intermediate and trailing ground forces defines a total ground force. The track system has an initial position wherein the total ground force is concentrated at the intermediate ground force, when the track system is at rest on a hard and flat level ground surface. In response to the bogie assembly pivoting about the bogie assembly axis, the total ground force is distributed between the intermediate ground force and at least one of the leading and trailing ground forces.

A rotating member attachment assembly includes a shaft including a cylindrical configuration defining a cylindrical axis, a first axial end and a second axial end along the cylindrical axis; a first coupler defining a first hole that defines a first hole axis and that is configured to receive the shaft, the first coupler further including a first inner axial end, and a first outer axial end; a first shaft bushing disposed on the shaft at the first axial end; and a first coupler bushing disposed in the first hole of the first coupler.

A rotating member attachment assembly includes a shaft including a cylindrical configuration defining a cylindrical axis, a first axial end and a second axial end along the cylindrical axis; a first coupler defining a first hole that defines a first hole axis and that is configured to receive the shaft, the first coupler further including a first inner axial end, and a first outer axial end; a first shaft bushing disposed on the shaft at the first axial end; and a first coupler bushing disposed in the first hole of the first coupler.

A track drive for outdoor power equipment has a support frame with a centerline and a hub bearing attached to the support frame. A drive sprocket having a nesting interior half and exterior half is attached to the hub bearing, which enables the drive sprocket to rotate relative to the support frame. The drive sprocket is attached to an associated drive hub of a piece of outdoor power equipment. Drive sprocket teeth are spaced radially about the drive sprocket, with a first set of drive teeth attached to the interior half sprocket and located on an interior side of the support frame. A second set of drive teeth are attached to the exterior half sprocket and located on an exterior side of the support frame. The drive sprocket transmits a rotational force to an endless track to rotate the endless track and propel the outdoor power equipment.

A working machine includes an undercarriage supported by first and second ground engaging units powered by first and second drive units, a main frame supported by the undercarriage, a first sensor configured to sense an orientation and relative angular motion of the main frame with respect to the undercarriage, a second sensor configured to sense an orientation and relative angular motion of the main frame in an external reference frame independent of the undercarriage, and a controller functionally linked to the first and second sensors. The controller is configured to receive commands corresponding to an intended movement of the first and second ground engaging units, and generate control signals to the first and second drive units to achieve or maintain the intended movement taking into account a detected orientation of the main frame relative to the undercarriage and a detected orientation of the main frame in the external reference frame.

A working machine includes an undercarriage supported by first and second ground engaging units powered by first and second drive units, a main frame supported by the undercarriage, a first sensor configured to sense an orientation and relative angular motion of the main frame with respect to the undercarriage, a second sensor configured to sense an orientation and relative angular motion of the main frame in an external reference frame independent of the undercarriage, and a controller functionally linked to the first and second sensors. The controller is configured to receive commands corresponding to an intended movement of the first and second ground engaging units, and generate control signals to the first and second drive units to achieve or maintain the intended movement taking into account a detected orientation of the main frame relative to the undercarriage and a detected orientation of the main frame in the external reference frame.