A vacuum pump comprises: a rolling bearing configured to support a rotor shaft provided at a pump rotor; a lubrication fluid storage section configured to store lubrication fluid supplied to the rolling bearing; a MEMS element including an infinitesimal flow rate pump configured to transfer the lubrication fluid of the lubrication fluid storage section to the rolling bearing; and a first flow path of a capillary structure configured to move the lubrication fluid of the lubrication fluid storage section to the infinitesimal flow rate pump by capillary force.

A bicycle rolling-element bearing assembly includes an outer bearing ring, an inner bearing ring, a plurality of rolling elements disposed between the outer bearing ring and the inner bearing ring and rotatably supporting the outer bearing ring relative to the inner bearing ring, and a lubricant reservoir, configured as a first cage, for storing and dispensing a lubricant, the first cage including bridge elements extending between the rolling elements and at least one side ring connecting the bridge elements.

A pump lubricant supply system has a lubricant reservoir and at least one contactor to engage a lubricant transfer device provided on a rotor shaft of a pump to transfer lubricant from the lubricant reservoir to the lubricant transfer device via the at least one contactor. The lubricant reservoir includes at least a first reservoir portion formed of a first elongate strip of porous material wound to define a first lubricant container body having a longitudinal axis that extends transverse to the longitudinal axis of the elongate strip.

A bicycle rolling-element bearing assembly includes an outer bearing ring, an inner bearing ring, a plurality of rolling elements disposed between the outer bearing ring and the inner bearing ring and rotatably supporting the outer bearing ring relative to the inner bearing ring, and a lubricant reservoir, configured as a first cage, for storing and dispensing a lubricant, the first cage including bridge elements extending between the rolling elements and at least one side ring connecting the bridge elements.

A deep groove ball bearing with a split cage includes an outer ring, an inner ring, steel balls, an upper frame body, a bearing frame, and a lower frame body. Pocket grooves are formed in the bearing frame. The bearing frame is provided with a connecting piece. A first insertion groove and a second insertion groove are formed in both side walls of the connecting piece. A connecting groove is formed in a bottom surface of each of the pocket grooves. An oil storage cavity is formed in the upper frame body. The oil storage cavity is provided with a positioning flange at an opening. The positioning flange is in insertion fit with the connecting groove. The lower frame body is provided with arc-shaped grooves at positions corresponding to the pocket grooves. A connecting seat is formed on the lower frame body.

A lubricant supply member of a linear guide includes a first recessed part formed above a guide rail, a pair of second recessed parts formed at both left and right side-surface positions of the guide rail, and protrusions slidable on rail side raceway surfaces of the guide rail. A lubricating unit includes a first cylindrical part, arranged in the first recessed part, to allow the first recessed part to move in a vertical direction of the slider, and to press the first recessed part to a widthwise outside of the slider, and a pair of second cylindrical parts, arranged in the pair of second recessed parts, to allow the pair of second recessed parts to move in a width direction of the slider, and to press the pair of second recessed parts in the vertical direction of the slider, respectively.

A power transfer mechanism includes a body (2) on a vehicle; an engine (E) in the body (2) which enables the vehicle to move; a shaft (3) on the body (2) which is activated by the engine (E); a housing (4) containing the shaft (3); and at least one bearing group (5) between the housing (4) wall and the shaft (3) which supports movement of the shaft (3).

A lubricant supply device for a linear guide apparatus is configured to include an end cap 5, and a container 7 retaining lubricant and disposed adjacent to the end cap 5. The end cap 5 is formed with a through-hole 16 extending toward the container 7 from a direction change path 5a. The container 7 is formed with an aperture communicating with the through-hole 16 of the end cap 5. The lubricant is supplied into the direction change path 5a via the aperture of the container 7 and the through-hole 16 of the end cap 5. The slider can be thereby lubricated while preventing damage to a rolling element and the direction change path of the end cap.

A method is provided that forms a solid film on a bearing component of a rolling bearing. A solution containing a fluorine compound and a lubricant having no functional group is allowed to adhere to the bearing component as a first liquid film (adhesion step). The adhering first liquid film is hardened to form the solid film on the bearing component. The rolling bearing including the bearing component with the solid film formed thereon is rotated. The rolling bearing is washed in a washer fluid containing the same lubricant as that used in the adhesion step, and the washer fluid is allowed to adhere to the bearing component as a second liquid film. Then, the adhering second liquid film is dried.

In a bearing device 1, a plurality of columnar needle rollers 13 are provided. A cage 14 is provided in which the needle rollers 13 are arranged in parallel with each other along an axial direction R of a pin roller 9, so that the needle rollers 13 form a cylindrical configuration around the pin roller 9. The cage 14 has oppositely placed two rings 17 and a plurality of bridge pieces 18 bridged between the two rings 17, and having the bridge pieces 18 to rotatably accommodate the needle rollers 13 in order to achieve higher performances.