Abstract:
A plastic cage consists of two side rings that have a common axis of rotation and are axially spaced apart from one another, and a plurality of cage webs that connect the side rings to one another and between which pockets are formed for receiving rolling elements, wherein the plastic cage is axially slotted at at least one peripheral location by a parting line which defines a first cage end and a second cage end and at the boundary surfaces of which mutually corresponding closure elements are located, by means of which the first and second cage ends can be fixed relative to one another both in the axial and radial direction and in the peripheral direction.
Abstract:
There is provided a rolling bearing used in a liquefied gas environment or in an extremely low temperature, wherein an inner ring and an outer ring are made of steel material which is any one of bearing steel, stainless steel, high-speed tool steel and cemented steel, and a rolling element of the rolling bearing is made of ceramic having a coefficient of linear expansion of 70% to 105% of a coefficient of linear expansion of the steel material forming the inner ring and outer ring. A liquefied gas pump including the rolling bearing is also provided. Further, there is provided a cage which contains PTFE, a fibrous reinforcing material and a solid lubricant, and which is suitable for the above rolling bearing or the like.
Abstract:
A rolling contact bearing assembly includes a cage including two or more arcuate members each having a plurality of pockets defined therein for accommodating a corresponding number of rollers arranged consecutively in a circumferential direction to form a ring shaped assembly. The arcuate members are connected together by a retention ring, having an elasticity, over a circumference of the cage. The arcuate members are displaced radially outwardly against an elastic compressive force of the retention ring such that circumferential gaps are formed at joints between the neighboring arcuate members. The arcuate members are held in a condition movable in the circumferential direction by a distance equal to the size of the circumferential gaps.
Abstract:
This rolling bearing retainer (RT) which is formed by insert molding a resinous material together with a core member (1) within a mold, in which the core member (1) is embedded within a resin part (2) made of the resinous material and there is provided a support area exposure part (16) at a plurality of locations of the resin part (2) for exposing a support area (6) of the core member (1) supported within a cavity of the mold. The resin part (2) includes a ring shaped body (23) and a plurality of support column bodies (24) extending axially from the ring shaped body (23) and defining a pocket (Pt) for retaining a rolling element therebetween, and the core member (1) is provided with a ring shaped body embedded part (3a) and a plurality of support column body embedded parts (3b) extending from the ring shaped body embedded part (3a).
Abstract:
The present invention provides a cage, for a rolling bearing, whose surface is silver-plated by using a barrel plating method capable of improving the durability thereof in a sliding test. In the cage, for the rolling bearing, made of an iron metal material and having a precious metal-plated layer formed on a surface thereof, the precious metal-plated layer is formed on a base plated layer formed on a surface of the iron metal material by using a barrel electroplating method. A surface of the base plated layer consists of a smooth surface. The precious metal-plated layer is in direct close contact with the smooth surface. The base plated layer consists of a metal having a higher ionization tendency than the precious metal formed on the surface of the base plated layer. A cavity is not present at an interface between the copper-plated layer and the silver-plated layer.
Abstract:
A rolling bearing cage (10) having a plurality of loose segments (11, 12, 13, 14) arranged in the circumferential direction is provided. The segments (11, 12, 13, 14) comprise a main body (15) having at least one pocket (16) for receiving rolling bodies (21). At least one play compensating element (17) is arranged circumferentially between two adjacent main bodies (15), and the play compensating element (17) has circumferentially a higher elasticity than a main body (15), and the segments (11, 12, 13, 14) are arranged circumferentially without play at room temperature.
Abstract:
A retainer for a roller bearing holds needle rollers within slit-shaped pockets which are formed separately by means of partitions arranged with a fixed pitch in the circumferential direction. Each partition is equipped with two side faces, which face the sides of the adjacent partitions, and an outer-circumferential-side end face, which faces the outer circumferential side of the retainer, and retaining protrusions are formed at the corner parts where the outer-circumferential-side end faces and each side face intersect. Each retaining protrusion protrudes farther to the outer circumferential side from the outer-circumferential-side end face, and protrudes obliquely in the direction in which the aperture width of the pockets is narrowed. For each pocket the positions where the retaining protrusions are formed in the longitudinal direction of the partitions are set so as not to overlap the adjacent pockets.
Abstract:
In a split cage for a rolling bearing, cage segments each having a plurality of pockets that accommodate rolling elements are arranged in a circular manner along the circumferential direction. Protrusions are formed on end faces of rims of one of the adjacent cage segments, and grooves are formed in end faces of rims of the other one of the adjacent cage segments. By fitting the protrusions into the grooves, the adjacent cage segments are prevented from moving relative to each other in the radial direction.
Abstract:
A method for producing a cage of a rolling bearing, for receiving a rolling body. The body of the cage is a plastic material that can be cross-linked by radiation, and is provided with rolling bodies later during the method. The body of the cage is fitted with the rolling bodies only once the structure of the cage has been exposed to the radiation. Also, a cage is disclosed for receiving rolling bodies of a rolling bearing, which has a body consisting of a plastic material.
Abstract:
The invention relates to a roller bearing, with an inner running ring, an outer running ring, several roller bodies, arranged between the running rings and guided in a bearing cage, whereby the bearing cage comprises circumferential evenly distributed bearing pockets which are essentially axially and circumferentially enclosed, and each of which contains a roller body. According to the invention, the operational characteristics of the roller bearing may be improved whereby on each bearing pocket the bearing cage comprises at least one passive positioning element by means of which the pocket play of the corresponding roller body may be altered due to a temperature-dependent shape change of the positioning element.