A rolling bearing includes a stationary radially outer ring, a groove, at least a rotatable radially inner ring, at least a plurality of rolling bodies, interposed between the radially outer ring and the radially inner ring and a grease dispenser device configured to be accommodated within the groove of the radially outer ring. The dispenser device is further provided with a radially outer crown on which at least a radially inner protrusion is rigidly fixed, the protrusion having a barrier function against a flow of grease.

A shaft seal is proposed, having an annular base body whereof one lateral surface forms a circumferential sealing surface and whereof the other, opposing, lateral surface has at least two circumferential sealing lips extending radially therefrom, between which an outwardly open outer cavity is delimited. To enable a coupling between a stationary body and a rotatable body arranged coaxially thereto which is suitable for pressure-medium transmission, the shaft seal is distinguished by a pressure-medium inlet in an outer wall of the base body and a pressure-medium outlet which leads into the outer cavity and is in fluid connection with the inlet.

A bearing unit provided with a rolling bearing having a radially outer race, two radially inner races, a ring of conical rollers arranged between the radially outer race and the two radially inner races, and a device for retaining grease and metering oil housed inside a groove of the radially outer race and having an annular wall arranged transversely with respect to the rolling bearing and acting as barrier for the flow of grease and provided with a plurality of through-openings for retaining the grease and allowing the oil to pass between the two rings of conical rollers in any operating condition, and also with a plurality of radial vanes engaged with the annular wall for retaining the grease.

A rolling bearing includes a stationary radially outer ring, a groove, at least a rotatable radially inner ring, at least a plurality of rolling bodies, interposed between the radially outer ring and the radially inner ring and a grease dispenser device configured to be accommodated within the groove of the radially outer ring. The dispenser device is further provided with a radially outer crown on which at least a radially inner protrusion is rigidly fixed, the protrusion having a barrier function against a flow of grease.

A suspension bearing unit includes a lower support cap, an upper bearing cap having an axial skirt, and at least one bearing disposed radially between the lower support cap and the upper bearing cap. At least one gasket is at least partially disposed in a space radially between the axial skirt and the at least one bearing and secured to the upper bearing cap or to the lower support cap. The gasket includes a sealing portion, and the sealing portion has at least one recess which may contain a lubricant. When the gasket is secured to the upper bearing cap, the sealing portion seals against a portion of the lower support cap, and when the gasket is secured to the lower support cap the sealing portion seals against a portion of the upper bearing cap.

A suspension bearing unit includes a lower support cap, an upper bearing cap, at least one bearing disposed between the lower support cap and the upper bearing cap, and at least one gasket overmolded to the upper bearing cap and having a sealing portion extending toward the lower support cap and forming a seal with a portion of the lower support cap. The upper bearing cap includes an external skirt radially surrounding the at least one gasket. Also a method of forming the unit.

A rolling bearing device includes a rolling bearing; and a spacer provided adjacent to one side of the rolling bearing in an axial direction and having a grease reservoir and a flow path, the grease reservoir being in a form of a groove, extending along a circumferential direction, and having grease reserved in the grease reservoir, and the flow path providing communication between the grease reservoir and an inner part of the rolling bearing. The spacer includes an annular wall surface that defines an inner periphery of the grease reservoir. An end of the annular wall surface on a side of the rolling bearing in the axial direction of the grease reservoir is continuous with an opposed end face of the spacer that is opposed to the rolling bearing. An entire area of the annular wall surface is constituted by a flat surface.

A labyrinth seal bearing includes: an inner ring; an outer ring; a labyrinth seal structure, located in a radial gap between the inner ring and the outer ring; wherein the labyrinth seal structure includes a plurality of seal rings, a labyrinth gap channel is formed among the plurality of seal rings, and the labyrinth gap channel includes two ports respectively connected with an external of the bearing and an internal of the bearing; and a seal loop made from lubricating grease, wherein the seal loop is located in the labyrinth gap channel, and blocks the labyrinth gap channel, so as to isolate the two ports from each other. The present disclosure solves the problem of poor sealing effect in a conventional labyrinth seal bearing.

A shaft includes a head part having an outer diameter greater than an inner diameter of an inner ring and being in contact with a side surface on one axial end side of the inner ring, and a column part extending from the head part toward the other axial end side and having an axial width greater than a bearing. An external periphery of the other axial end portion of the column part is formed with a male screw to be fastened with a support arm. A side surface on one axial end side of the shaft is formed with a concave section to which a tool capable of rotating the shaft is to be fitted. A bottom part of a housing is formed with a through-hole into which the tool can be inserted, at a position facing the concave section.

A linear guide with lubrication device includes: a elongate rail; a slide module slidably mounted on the elongate rail and including a slide block and two recirculation members, which are respectively mounted to two end faces of the slide block and include a plurality of recirculation passages, in which at least one of the recirculation members includes a lubricant reservoir and a fixing through hole formed therein such that the lubricant reservoir, the recirculation passage, and the fixing through hole are in communication with each other and the lubricant reservoir receives lubricant filled therein; an application member received in the fixing through hole; a transferring member covering the application member and the transferring member absorbing and transferring lubricant to the application member. Rolling bodies, when moving through the recirculation passage, may contact the application member to have lubricant applied thereto.