Abstract: An arrangement for attaching running rings to a rotary drum includes straps which hold the bore surface of the rings on a supporting surface of the rotary drum. The straps are circumferentially spaced apart on at least one of the two sides of the respective ring, and each of the straps has an axial projection with a support surface facing an engagement surface of the ring, the support surface facing radially inward. In order to prevent contact wear between the bore surface of each running ring and the respective supporting surface, each engagement surface and/or support surface is inclined toward the axis of the drum, in the direction extending axially outward of the respective running ring. The support surface of each strap is axially adjustable with respect to the engagement surface of the respective running ring, so that the bore surface of the rings can be pushed locally against the supporting surface of the rotary drum by the straps.

Abstract: A vane-type rotary compressor is provided with front and rear side plates for closing both axial ends of a cam ring, are provided boss sections for receiving bearing for rotatably supporting rotor shaft, and a flange sections radially extending from the associated boss sections. The boss section and the flange section are made of different material and formed into integral form by insert casting. Namely, the boss section is made of a material having a linear expansion coefficient substantially equal to the linear expansion coefficient of a bearing. Furthermore, the boss section is formed with one or more radially extending projections.

Abstract: An aluminum transmission or transaxle case contains a steel shaft which is supported in the case on two directly mounted tapered roller bearings, so that the two bearings confine the shaft both radially and axially. To compensate for the differences in expansion and contraction between the aluminum case and the steel shaft as the transmission or transaxle experiences variations in temperature, a race of at least one of the bearings is fitted with a compensating ring having a coefficient of thermal expansion greater than that of the case or shaft. As a consequence, the bearings operate at a generally uniform setting over a wide range of temperature variations.

Abstract: This invention consists of a bearing (26) designed to operate in a cryogenic environment and which has an inner raceway (30) generally constructed as an annular band fitted by an interference fit to a rotating shaft (12). A pair of annular tension bands (32, 34) are fitted onto opposed sides of the band and function to firmly clamp the raceway (30) to the shaft (12). This occurs because the tension bands are constructed of a material which, when cooled to aproximately -385.degree. F., shrinks more than the raceway (30) and the shaft (12) to which it is fitted. The bands further relax somewhat at room temperature and permit the interference fit between the raceway (30) and the shaft (12) to be sized such that the raceway (30) is not overly stessed.

Abstract: A frame member, or bearing block, for supporting bearings for two or more parallel shafts includes two spaced bearing receiving bores and a heat barrier slot. The heat barrier slot includes a transverse segment which extends between the two bearing receiving bores and longitudinal segments which extend outwardly beyond the centers of at least one of the bores. The bearing block can be provided with three or more bores for supporting three or more parallel rolls. In the latter case the heat barrier slot includes a center section of Y-shaped configuration including transverse segments disposed between each pair of bores and endwise segments extending outwardly beyond the center of each bore.

Abstract: A bearing assembly in which at least one of an outer and an inner raceway ring of a bearing has inclined end surfaces, inclined at angles .theta..sub.1 and .theta..sub.2 with respect to the vertical bearing center line. The angles .theta..sub.1 and .theta..sub.2 are determined to satisfy a relationship:tan .theta..sub.1 +tan .theta..sub.2 =2W.sub.p /D.sub.pbetween an axial length W.sub.p and a diameter D.sub.p of the at least one raceway ring measured at the center of the thickness of the raceway ring.

Abstract: An inter-shaft bearing in a multiple body turbo-engine having an outer first shaft and an inner second shaft comprises bearing rollers disposed between an outer ring mounted on the first shaft and an inner ring mounted on the second shaft. The first shaft and the outer ring are provided with cooperating conical surfaces, and a plurality of fly-weights are disposed between the rear face of the outer ring and a retaining nut mounted on the first shaft. Each of the fly-weights has an inclined rear face which cooperates with a conical surface of the nut so that when centrifugal action during operation of the engine causes the fly-weights to move radially outwards they are simultaneously forced axially forwards to exert a thrust on the outer ring which thus tends to restrain the bearing through the action of the cooperating conical surfaces of the outer ring and the first shaft, thereby controlling bearing play.

Abstract: A cage for a roller clutch is molded of one piece, but still compensates for the divergence between its size and the size of the annular space between the clutch races that can occur with a temperature change. The cage is made up of a series of structurally complete retention pockets joined to one another at an even number of axially alternating flexible hinge points.

Abstract: A cylindrical gear unit which includes a gear housing, a gear pinion and a gear wheel, the gear pinion being fixed to a shaft which is rotatably journalled in bearings supported by at least one bearing support. One of the bearing supports comprises a sleeve in which a roller bearing is fixedly mounted, a fixing plate supported by the gear housing, as well as a disc-shaped rib portion which interconnects the sleeve and the fixing plate. The rib portion extends substantially along the entire length of the sleeve and the fixing plate and is substantially parallel to a tangential plane on the contact line between the gear pinion and the gear wheel. In addition, at least one stop face for the sleeve is arranged at a small distance from the outside of the sleeve on at least that side of the sleeve facing away from the gear wheel.

Abstract: A seal arrangement for rollers which permits axial displacement of a roller and its shaft with respect to their supporting bearing. A sealing ring which is generally L-shaped in cross-section has one radial arm of the L mounted on the shaft and against the roller, to provide a seal with respect to the roller. The other arm of the L extends axially away from the roller and has an outer circumferential surface which lies closely adjacent an inner surface of the bearing housing to provide a seal with respect to the housing. Lamellar rings may be provided between the bearing housing and the sealing ring.

Abstract: An overrunning clutch cage molded of a plastic material with a greater differential of expansion is provided with a circumferentially spaced plurality of cage sections connected by alternating connector members that are sufficiently axially spaced and sufficiently flexible to allow the cage sections to move freely relative to one another, and thus conform to an annular space between clutch races with changing temperature without binding.

Abstract: A double row cylindrical expansion bearing assembly in which a recessed cylindrical outer raceway has an axial length substantially the same as the axial length of the double row of rollers and the inner race has a raceway of an axial length in excess of that of the outer raceway.

Abstract: A device for automatically adjusting the clearances in a roller bearing due to thermal expansion, constituting a tapered roller bearing having a dual track oppositely tapered inner race and a pair of single track tapered outer races, each outer race being in communication with a pair of coaxial, hydraulically loaded annular pistons, each of which translates in annular piston cylinders, supplied with hydraulic fluid. The hydraulic pressure of the fluid is maintained through an accumulator at a preselectable constant pressure to permit the outer races to translate axially, against the annular piston, as the inner race expands radially due to thermal expansion. Upon thermal contraction, the pressure forces the annular pistons axially toward the outer races, which, due to the taper of the races and the bearing elements, reduces the clearance created due to the thermal contraction.

Abstract: An adaptive control system for a machine tool or the like includes two pairs of thrust sensors for measuring radial and axial spindle deflection and a temperature sensor for measuring spindle bearing temperature. Data processing apparatus, typically comprised of a microcomputer, is coupled to the thrust and temperature sensors and regulates the spindle bearing preload and spindle axis feed rate in accordance with the radial and axial spindle thrust. The microcomputer simultaneously regulates the percentage of oil in the oil/air mixture lubrication mist sprayed on bearing contact surfaces in accordance with bearing temperature, thereby assuring optimum machine tool performance.