Abstract: A rolling bearing (12) is arranged to support a shaft (10) rotatably in a housing (13). In order to make simple mounting and dismounting of the bearing (12) possible this is first fitted with a loose fit to the shaft (10), whereupon the shaft (10) is caused to expand thus that an interference fit is obtained at the same time as desired preload can be obtained in the bearing (12). The invention is intended to be applied particularly when mounting a drill head to a tunnel drilling machine.

Abstract: To prevent movement of an article along a shaft or a bore, an element engages the article and engages the shaft or bore at locations forming an angle no greater than tan.sup.-1 .mu..The locations of engagement lie in a first plane extending perpendicular to a second plane in which lies the axis of the bore or shaft. A third plane extends perpendicular to the axis. The angle is between the first and third planes. .mu. is the coefficient of friction between the element and the bore or shaft.

Abstract: A device for attachment of a machine member to a shaft, whereby the machine member has an opening for said shaft. The opening has on one hand surface portions of a shape corresponding to the shape of the shaft, cylindrical or tapering, and on the other hand, surface portions having a shape corresponding to the shape of the clamping surfaces of a clamping sleeve, for allowing optional attachment of the machine member directly on the shaft or by means of the clamping sleeve.

Abstract: A device for mounting a bearing having an inner ring with a conical bore on a bearing seat having a conical clamping sleeve which, on the side of its large diameter, projects axially beyond the inner ring, comprising a spacer (12) positionable loosely on the end surface (13) of the inner ring (1) on the side of the clamping sleeve projection (A), the thickness of the spacer being less than that of the projection (A) in the preassembled state by an amount equal to the stroke (B) required to press in the clamping sleeve (9), the spacer thus limiting the distance (B) of the inward stroke.

Abstract: To prevent movement of an article along a shaft or a bore, an element engages the article and engages the shaft or bore at locations forming an angle no greater than tan.sup.-1 .mu..The locations of engagement lie in a first plane extending perpendicular to a second plane in which lies the axis of the bore or shaft. A third plane extends perpendicular to the axis. The angle is between the first and third planes. .mu. is the coefficient of friction between the element and the bore or shaft.

Abstract: Disclosed are methods and apparatus for controllably locking a shaft to a bearing surface moveable thereupon to permit or prevent axial movement of the bearing with respect to the shaft. In one embodiment an axially extending flap is formed in the shaft which is activated by a wedge to expand the diameter of the shaft and thereby lock the shaft to the surrounding bearing surface. In another embodiment a slot is formed in the bushing surrounding the shaft and the internal diameter of the bushing decreased with a wedge screw to lock the bushing to the shaft.

Abstract: The combination comprising a machine element, a tubular member and a ring fastener for mounting the machine element in the circular bore of the tubular member, the ring fastener being in the form of a split annular ring member having confronting end faces, the ring member being of a diameter slightly greater than the diameter of a bore in the tubular member, each end face having a first axial portion extending generally parallel to the axis of the ring member and a second inclined portion extending at a predetermined angle to the axis of the ring member. The first and second portions of the end faces normally align and confront in the relaxed condition of the ring member and are displaceable axially relative to one another for insertion in the bore of the tubular member and after seating in the bore displaceable in an opposite axial direction by application of an axial force adjacent the axial end faces.

Abstract: A rotary assembly includes a shaft, a housing, and a bearing interposed between shaft and housing to provide radial support while also permitting relative rotation.The invention permits optimum operation of the bearing, by permitting the bearing to be self-positioned even though slightly out of alignment with either the shaft or the housing, or both.This is accomplished by providing a radial space between the bearing and the shaft or housing; placing a generally ring-shaped compensating member in circumferential engagement with the associated cylindrical surface of the shaft or housing; providing a longitudinal taper on the outer surface of the associated end of the bearing; and then placing the tapered surface of the bearing in overlapping engagement with the compensating member and resiliently urging the bearing and the compensating member axially together so as to provide a firm support both radially and axially for the bearing.

Abstract: A bearing housing (3) encloses a bearing (2) for a shaft (1). The bearing is mounted on the shaft by a clamping sleeve (4) with a longitudinal slit and two flanges (5, 6) one on each side of the bearing. The flanges, which are axially fixed on the sleeve, are parts of mounting and dismounting means for a bearing. The bearing space is sealed by sealing members which surround the flanges and have lips (12, 13) contacting the outer surfaces of said flanges. Resilient sealing rings (10, 11) are arranged between the flanges and the inner ring of the bearing. The sealing arrangement allows the use of a slitted clamping sleeve and axial displacement of the bearing on the shaft (1) during mounting.

Abstract: A centrifugal compressor has a speed increasing gear located between an impeller and a prime mover and driven by the prime mover to increase the impeller speed. The speed increasing gear includes an impeller shaft provided with a pinion and having the impeller attached to the foremost end portion thereof, a casing body having a divided face perpendicular to the shaft, and a bearing unit arranged at the rear end portion of the impeller shaft.

Abstract: A single tapered bushing system for receiving and mounting a shaft within a bearing assembly is disclosed. A rotatable quill member having a hollow hub is received by the bearings. The hub has a tapered inner bore. A single sleeve having a flange at one end thereof, a tapered outer surface, and a cylindrical inner bore is received within the hub bore, with the outer tapered surface of the sleeve contacting the tapered hub bore substantially along the full length of the sleeve. A longitudinal slot in the sleeve permits circumferential contraction or expansion of the sleeve within the tapered hub bore. The inner sleeve bore receives a shaft in such manner as to accommodate variations in alignment, concentricity, and parallelism, within a limited range, between the axis of the shaft and the axis of the hub. A key and slot arrangement is provided for rotatably coupling the shaft and the hub.

Abstract: A device for fastening e.g. a bearing ring on a shaft comprises a clamping sleeve and a clamping member co-operating with the sleeve. The clamping member and the sleeve contact each other over wedge-shaped surfaces. The sleeve surfaces intended for contacting the bearing ring and the clamping member have such shape that the clamping force acts essentially on that part of the sleeve which co-operates with the clamping member, and no appreciable axial displacement takes place between the sleeve and the bearing ring. Thereby the bearing ring keeps its shape and position during mounting.

Abstract: In a torque transmitting assembly including a driven member and a driving member, one having teeth thereon extending parallel to the rotational axis and the other having teeth thereon extending obliquely to the rotational axis, an annular member is interposed which also has teeth which are parallel to the rotational axis and oblique to the rotational axis for engaging with the corresponding teeth of the driving and driven members in order to place them in torque transmitting engagement with each other. The annular member is formed from a deformable metallic material and the obliquely extending teeth extend relative to the parallel teeth at an angle of between 15.degree. and 45.degree..

Abstract: A bearing assembly and method of installing such within an enclosing open walled chamber wherein the bearing assembly utilizes first and second spaced apart bearing units. The bearing units low frictionally rotationally support a crank. The inner races of the spaced apart bearing units are connected together through a sleeve which is located about the crank. Mounted on the outer race of each bearing assembly is an expanding ring assembly. Each expanding ring assembly can be moved into tight engagement with the wall of the chamber.

Abstract: An adjustable shim structure for use between shaft-mounted equipments and aft-support bearings, whereby axial play of the equipments is prevented. The shim structure includes two collars having meshed threads enabling the collars to be rotated relative to one another for adjusting the axial length of the collar assembly. The shaft may be connected to each bearing by means of an expansible plug extending within a circular cavity in the shaft; the plug exerts an outward radial force on the shaft wall, thus expanding the shaft into an interference fit with the associated bearing.

Abstract: A bearing housing (3) encloses a bearing (2) for a shaft (1). The bearing is mounted on the shaft by a clamping sleeve (4) with a longitudinal slit and two flanges (5,6) one on each side of the bearing. The flanges, which are axially fixed on the sleeve, are parts of mounting and dismounting means for a bearing. The bearing space is sealed by sealing members which surround the flanges .[.and.]..Iadd., In a preferred embodiment, the sealing members .Iaddend.have lips (12,13) contacting the outer surfaces of said flanges. Resilient sealing rings (10,11) are arranged between the flanges and the inner ring of the bearing. The sealing arrangement allows the use of a slitted clamping sleeve and axial displacement of the bearing on the shaft (1) during mounting.