A retainer comprises a roller retaining click which is bent from an inner diameter edge of a rib portion toward the inside in an axial direction and extends so as to protrude and positioned between adjacent rollers. A part of the retainer other than the roller retaining click is hardened by high-frequency quenching and high-frequency tempering.

A linear roller guide unit comprises an elongated rail and a carrier straddling the rail. A plurality of rollers is installed between the carrier and the rail so that the carrier can slide along the elongated rail. By installing six rows of rollers within the existing standard cross section, the invention can achieve long life, high load capacity and high rigidity.

An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.

A resilient mount (30), such as a center bearing isolator mount includes an inner sleeve (52) into which is molded an elastomer/rubber isolator (60), and an insert (70). These components are prepared as a sub-assembly (50) and axially inserted into the opening of an outer bracket (32), whereby fingers (76) deflect radially during insertion and snap-fit radially outward once received through the bracket opening to preclude disassembly. A lower insertion force is required to assemble the component...

A rotary shaft, such as an automotive crankshaft, for rotation about an axis carries an eccentric substantially circular section, radially extending flap (6), connected to the radially outer surface of which is an annular housing (16) affording a cavity defined in part by radially inner and radially outer coaxial cylindrical surfaces. The axis (22) of the cavity is offset from the axis (4) of the shaft. The cavity accommodates an annular inertia mass (20) and the radially inner and outer surface...

A linear motion guide device includes a slider slidably attached onto the guide rail, a ball bearing device disposed between the slider and the guide rail, and a lubricating device having a housing slidably attached onto the guide rail for receiving and for supplying a lubricant to lubricate the ball bearing device. A lubricant-conveying member is disposed in the housing and has an upper segment and one or more lower segments and one or more middle segments coupled between the upper segment and ...

An inner space of a housing sealed with a seal member as well as internal pores of a bearing member (pores in a porous structure) are filled with a lubricating oil without the presence of air, so that the oil surface of the lubricating oil is within a seal space. Under a reduced pressure of 100 Torr, no lubricating oil leaks outside of the housing even at any attitude of the fluid lubricated bearing device such as normal, inverted, or horizontal attitude.

A bearing for storing a lubricant and supplying the lubricant to a shaft is provided. The bearing includes an inner wall defining an axial bore adapted for receiving the shaft therethrough and an outer wall spaced apart from the inner wall. The bearing also includes a connecting portion disposed between the inner and outer walls and extending axially between first and second faces. At least one reservoir extends axially into the connecting portion between an open end at the first face and a clos...

Provided is a linear guidance device in which a track groove (30, 70) serving as an endless circulation path for balls (3) can be formed through cutting or grinding with high precision and with ease at low cost. The linear guidance device includes: a raceway rail (1, 5) provided with a ball rolling groove (10, 50) which is formed on each side surface thereof; and a movement block (2, 6) formed in a channel configuration in which a base portion (20, 60) and a pair of flange portions (21, 61) are ...

A slide bearing for supporting a shaft and comprising at least one bearing shell for receiving the shaft. The bearing shell and the surface of the shaft define a bearing gap. Also described is a mechanism for supplying a lubricant to the bearing gap so that the lubricant can be removed therefrom. To compensate for negative effects of a temperature-dependent change of the bearing gap, there is provided at least one throttling element for throttling the flow of lubricant through the bearing gap.