A bearing lubricator for lubricating a lubricated bearing is provided. The bearing lubricator includes a reservoir configured to contain lubricant, a bearing lubricator for lubricating a lubricated bearing, a conduit connected to the reservoir and to the bearing; and mechanism and a controller. The mechanism is operably connected to at least one of reservoir and the conduit. The mechanism is adapted to advance the lubricant from the reservoir to the conduit when actuated. The controller stores a triggering value of a parameter. The controller is further adapted to actuate the mechanism when a signal indicative of the triggering value is advanced toward the controller. The bearing lubricator also includes a sensor operably connected to the controller. The sensor is adapted to measure a parameter of a measured bearing and to send a signal to the controller indicative of the value of the parameter.

A planetary gear drive has needle roller bearings of full roller type as planetary gear bearings for planetary gears. The needle roller bearings have lubrication mechanisms, respectively. Each lubrication mechanism has an annular grease retaining groove. The grease retaining groove is formed on an inner peripheral surface (an outer-race-side raceway surface) of the shaft hole of each planetary gear. Poor lubrication can be prevented from occurring when needle roller bearings of full roller type are employed as the planetary gear bearings.

An acuator for a shift-by-wire system includes a drive motor installed inside a motor housing, the drive motor having a drive shaft, and a decelerator inside a decelerator housing coupled with the motor housing, the decelerator coupled to the drive shaft. The decelerator includes a sun gear connected to a first side of an eccentric part of the drive shaft, a ring gear engaged with the sun gear and fixed to the decelerator housing, an output shaft connected to a second side of the eccentric part, a first bearing coupled to one side of the eccentric part and supporting the sun gear, a second bearing coupled to the other side of the eccentric part and supporting the output shaft, and a power delivery unit coupled to the sun gear and the output shaft in a center region between the first and second bearings.

An improved device and method of lubrication for a tongue jack, 5th wheel jack, or other jack or other threaded positioning device. Ports are provided in the inner and outer tubes of the jack. The aligned ports provide access to a lubrication cavity in the jacknut. The lubrication cavity may include a grease fitting such as a zerk fitting. When the ports are in alignment, a grease gun can be inserted easily to the zerk fitting to apply grease to the interior structure of the nut as well as to the threads of the jackscrew. The lubricant may be introduced directly at a region of contact between a screw and the load bearing element. Applicant's test results show that this improved lubrication can increase the life cycle of the jack by more than 100%.

A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 μm. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.

Provided is a motor-incorporating roller capable of preventing a grease supply portion from separating. The motor-incorporating roller has a motor and a reducer in a cylindrical roller body and the reducer is provided with a gear train including a plurality of gears. The motor-incorporating roller has a grease supply portion that supplies grease to the plurality of gears in the reducer and is capable of containing grease therein. Furthermore, the motor-incorporating roller has a power output member that outputs power and a shaft portion that pivotally supports the gears. The grease supply portion is integrated with the power output member through the shaft portion to restrict movement of the shaft portion in an axial direction.

A lever mechanism for converting a motion from linear to rotary includes a guiding bar, a slider which slides along the guiding bar, and a lever. The lever includes a cylindrical element and a pair of slot links which are fixed frontally on the cylindrical element and between which the slider is arranged. The slider includes at least two bushes for supporting a pivot which is adapted to act on the slot links. The bushes are mutually separated by a space to accommodate a reserve of lubricant.

A gear is provided that has excellent continuous moldability for practical use, and both high slidability and high durability. The provided gear is a molded resin constructed of a resin composition comprising a thermoplastic resin (A) and cellulose nanofibers (B) with an average fiber diameter of 1000 nm or smaller, and having a number average molecular weight of the thermoplastic resin (A) in the range of 10,000 to 150,000, wherein a sliding surface of the gear with another gear teeth has an arithmetic mean surface roughness Sa of 3.0 μm or lower.

An electric vehicle transmission mechanism which is applied to drive a chain wheel of an electric vehicle is provided. The electric vehicle transmission mechanism includes a transmission shaft, an output shaft, a lower bearing and an upper bearing. The transmission shaft is connected to the chain wheel and has a transmission axial direction, and the transmission shaft includes a transmission portion. The output shaft includes an output portion engaged with the transmission portion, and the output shaft has an output axial direction substantially perpendicular to the transmission axial direction. The lower bearing is sleeved on the output shaft. The upper bearing is sleeved on the output shaft and located between the lower bearing and the output portion.

A ball screw device includes an elongated shaft having an outer groove, a ball nut having a screw hole for receiving the elongated shaft and having a passage communicating with the screw hole of the ball nut, and a lubricating device includes an inner cylindrical element engaged onto the elongated shaft and secured to the ball nut, a housing attached onto the cylindrical element and contacted with the ball nut, and the housing includes a chamber for receiving a lubricating grease, an oil distributing member is engaged into the passage of the ball nut and engaged into the screw hole of the ball nut for engaging with the elongated shaft, and an inner element is engaged in the housing and engaged with the distributing member for supplying the lubricating grease to the distributing member.