To provide a lubricant composition for shock absorbers, a shock absorber, and a method for adjusting the friction of a lubricant composition for shock absorbers, each capable of satisfying both operational stability and ride comfort particularly at the time of a minute amplitude. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent, wherein the friction adjusting agent contains a pentaerythritol ester, the pentaerythritol ester contains a pentaerythritol tetraester at the highest proportion or in an amount of 50 mass % or more, and the pentaerythritol ester content is 0.5 mass % or more.

A spring part, in particular for a driving device, includes a spring body extending around a central axis. The spring body comprises several spring windings which run radially around a spring axis and are made of at least a base material. The base material is surrounded at least by a first protective layer, and the spring body is at least partially covered on the outside by a lubricant. A method for manufacturing a spring part includes the steps of providing a spring body with several spring windings made of a base material and coating the base material at least with a first protective layer. The method includes the step of applying a lubricant formed as a silicone-based lubricant to the outside of the coated spring body.

Methods and systems are provided for balancer shaft assemblies featuring bearing caps. In one example, a system may include a bearing cap connected to a housing surrounding a balancer shaft. The bearing cap may have faces which contact components of the balancer shaft. This contact may prevent movement of the balancer shaft in a particular direction.

A device having two glands leading a piston rod the glands being located at one side of a piston, whereas an inner gland divides the chamber inside the closed cylinder into a working chamber limited axially by an inner surface of a bottom and into a lubricating chamber limited axially by the inner surface of the outer gland. The working chamber has a flow zone shaped as the cylinder with its inner diameter increased, placed adjacent to the inner gland, as well as the compression zone, whereas the inner diameter of the cylinder is slidingly fitted with the outer diameter of the piston.

A mount includes a floating unit having a floating flange that includes at least six fingers extending from a central portion; a base unit having a base housing that includes spring mounts extending inwardly from the exterior walls; first springs disposed in the base housing and oriented parallel to a first floating axis, where each of the first springs is mounted on at least one of the spring mounts and receives a portion of one of the fingers of the floating flange that extends between adjacent coils of the first spring; and second springs disposed in the base housing and oriented orthogonally to the first springs, where each of the second springs is mounted on at least one of the spring mounts and receives a portion of one of the fingers of the floating flange extending into the second spring.

A mechanism for mounting in ground, foundation or structure, to provide road, port, railway or similar passive safety for protection of the respective vehicles or structures, having at least one rigid element arranged as a side of a triangle whose basal side rests on the ground, with its first end at the apex of the triangle, its midpoint pivoted to an intermediate element, and with its second end pivoted with respect to at least one friction element; a friction dissipation member; at least one elastic element arranged with its axis in the direction of the degree of freedom; the at least one friction element and at least one rigid element are attached by a coupling element allowing sliding of each friction element perpendicular to the impact load when it compresses the elastic element.

A bushing assembly pivotally connects the beams of an auxiliary lift axle/suspension system to a hanger and to an axle seat. The bushing assembly includes a pair of bushings, a metal sleeve, a pin with a threaded end, a pair of washers, and a threaded nut. The pair of bushings are disposed into an opening formed near an end of the beam. Each one of the pair of bushings includes a cylindrical wall comprising an inner end, an outer end, a central opening extending from the inner end to the outer end, an exterior surface, an interior surface, and a flange. The interior surface of the bushings includes at least one groove formed therein for preventing lubricant from escaping the bushing assembly during operation of the lift axle/suspension system while a sealing feature prevents contaminants from migrating into the bushing assembly.

Provided are a lubricant composition for shock absorbers, a lubricant additive, and a method of adjusting frictional property of a lubricant composition for shock absorbers, each capable of satisfying both the steering stability and ride comfort. The lubricant composition for shock absorbers contains a base oil and pentaerythritol esters and having frictional property represented by the following formula (1):
RI>1.75F.sub.ave0.05(1)
supposing that a ratio ({F.sub.saF.sub.ave}/F.sub.ave) of a difference, at the time of minute amplitude, between a peak frictional force F.sub.sa in transition from a stationary state to a sliding state and an average frictional force F.sub.ave to the average frictional force F.sub.ave at the time of minute amplitude is responsiveness RI.

A damping apparatus can be self-centering and include one or more pre-compressed and preloaded mechanical springs. A solar tracking apparatus can include a solar panel mounted on a rotating shaft, and a self-centering damping apparatus operatively connected to the rotating shaft to compensate for torque created when the solar panel is rotated at an angle to horizontal. A steering assembly for a zero-turn riding lawn mower can include a pair of steering levers and a self-centering damping apparatus operatively connected to the steering levers.

A vibration absorber is provided which is mounted in an annular space housing a spring of a damper, wherein accompanying rotational fluctuation of a drive source, when a first plate connected to the drive source and a second plate connected to a transmission rotate relative to each other while elastically deforming a spring, an arm part extending radially outward from a driven plate swings in the interior of an annular space, and grease packed in the annular space is compressed by the arm part and pushed inward in the radial direction, but since this grease is guided in the peripheral direction by a flow-aligning projection provided on either one of the driven plate and the seal plate and projecting toward the other, and is prevented from being concentrated in part of a seal member provided on the inner peripheral part of the seal plate and sealing the annular space.