A track roller for an undercarriage system includes a roller shell with a first inner surface forming a larger diameter shaft bore and a second inner surface forming a smaller diameter shaft bore coaxially arranged with the larger diameter shaft bore. A roller shaft having a first shaft end and a second shaft end supports the roller shell for rotation and has an oil reservoir formed therein. A first sleeve bearing and a second sleeve bearing are positioned upon the roller shaft, and an axially extending oil passage is formed by the second inner surface of the roller shell forming the smaller diameter shaft bore and an outer bearing surface of the second sleeve bearing. The oil reservoir in the roller shaft is confined in its extent to the second shaft end of the roller shaft.

A track roller for an undercarriage system includes a roller shell with a first inner surface forming a larger diameter shaft bore and a second inner surface forming a smaller diameter shaft bore coaxially arranged with the larger diameter shaft bore. A roller shaft having a first shaft end and a second shaft end supports the roller shell for rotation and has an oil reservoir formed therein. A first sleeve bearing and a second sleeve bearing are positioned upon the roller shaft, and an axially extending oil passage is formed by the second inner surface of the roller shell forming the smaller diameter shaft bore and an outer bearing surface of the second sleeve bearing. The oil reservoir in the roller shaft is confined in its extent to the second shaft end of the roller shaft.

A casing for a rotating machine includes a first fixed segment, and a second segment rotating along an axis of rotation (X-X). The first segment and the second segment are in contact along an interface provided with a sealing element. The sealing element is positioned in a housing connected to the internal volume of the casing, and also to the surrounding medium. The connection between the housing and the surrounding medium is made via a duct. The first casing segment or the second casing segment has a planer positioned at an outer end of the duct.

A casing for a rotating machine includes a first fixed segment, and a second segment rotating along an axis of rotation (X-X). The first segment and the second segment are in contact along an interface provided with a sealing element. The sealing element is positioned in a housing connected to the internal volume of the casing, and also to the surrounding medium. The connection between the housing and the surrounding medium is made via a duct. The first casing segment or the second casing segment has a planer positioned at an outer end of the duct.

To provide a crawler-type vehicle capable of efficiently scraping off mud from an upper road wheel. A pair of scraper members are disposed on one side in the front-rear direction and on other side in the front-rear direction of an upper road wheel. Each scraper member is formed with a claw that protrudes toward the upper road wheel. A right-left directional position of the tip of the claw of one scraper member and a right-left directional position of the tip of the claw of the other scraper member are different from each other.

To provide a crawler-type vehicle capable of efficiently scraping off mud from an upper road wheel. A pair of scraper members are disposed on one side in the front-rear direction and on other side in the front-rear direction of an upper road wheel. Each scraper member is formed with a claw that protrudes toward the upper road wheel. A right-left directional position of the tip of the claw of one scraper member and a right-left directional position of the tip of the claw of the other scraper member are different from each other.

In some implementations, a bushing may include a cylindrical body having an at least partially annular configuration. The cylindrical body may define a radial axis and may include an inner circumferential surface, an outer circumferential surface, a first end, and a second end. The inner circumferential surface may be configured to rotatably receive an outer surface of a pin of a track link joint. The outer circumferential surface may be configured to be rotatably received within a first counterbore of a first track link of the track link joint. The bushing may include at least one groove extending radially into the outer circumferential surface around the radial axis. The at least one groove may be configured to receive a first seal of the track link joint. The first seal may form a first radial seal between the outer circumferential surface and a first inner surface of the first counterbore.

A cartridge pin assembly in a track chain assembly includes a sleeve bearing having a flared end.

A cartridge pin assembly in a track chain assembly includes a sleeve bearing having a flared end.

A guard assembly for a work machine includes at least one guard including a body. The body in part defines a volume, a first opening, at least one second opening, and at least one pair of first retention tabs. The door defines a first end and a second end. In an open position of the door, the door provides access to the volume and, in a closed position of the door, the door limits access to the volume. The door includes a plate removably coupled to the guard proximal to the first end of the door by at least one fastener, and at least one coupling arrangement extending from the plate for pivotably coupling the plate to the guard proximal to the second end of the door. The coupling arrangement includes a first portion coupled to the plate and a second portion extending from the first portion.