Abstract:
The present invention relates to a bearing device for supporting a pinion shaft so as to freely rotate with respect to a case. The bearing device comprises a first tilt-contact rolling bearing provided on the connecting-flange-side outer peripheral surface of the pinion shaft and a second tilt-contact rolling bearing formed from an angular ball bearing provided on the pinion-gear-side outer peripheral surface of the pinion shaft, wherein lines of action of the first and second tilt-contact rolling bearings intersect with one another on an outer diameter side, the connecting-flange-side end portion of the first tilt-contact rolling bearing and the pinion-gear-side end portion of the second tilt-contact rolling bearing are respectively sealed with seal members, a sealed space between the seal members is infilled with grease, and the connecting flange is fastened in the pinion-gear direction to thereby preload the first and second tilt-contact rolling bearings.
Abstract:
The invention relates to a double-row thrust bearing comprised of rolling body rims (10, 11, 13, 14), outer running discs (5, 8), a middle running disc (6) and of a bush (1). Said thrust bearing is characterized in that the bush (1) extends in an axial direction over both running discs (5, 8), and is provided at one end with a flange (2), which is outwardly directed in a radial manner and which encircles the adjacently arranged first running disc (5). In addition, the second running disc (8) is joined to the bush (1) in a fixed manner whereby forming a pretensioned modular unit.
Abstract:
A method for assembling a double row angular contact rolling element bearing unit having an inner element with two raceways, and two separate outer ring pieces each with a single raceway, said outer ring pieces enclosing a gap which is wedge-shaped in a section through the bearing unit axis, and two series of rolling elements which are each accommodated between a raceway of the inner element and a raceway of an outer ring piece, tolerance means being provided between said outer ring pieces for urging said rings away from each other so as to provide the required tolerance (negative, zero or positive) to the bearing, said method comprises the steps of: providing an inner element having two raceways, providing two outer ring pieces each having a raceway, positioning the outer ring pieces around the inner element, positioning the series of rolling elements between the respective raceways of inner element and outer ring pieces, providing an endless tolerance ring, the cross-sectional dimensions of which are larger than the outer diameter of at least one of the outer ring pieces, shifting the tolerance ring up to a position opposite to the gap between the outer ring pieces, plastically deforming the tolerance ring so as to reduce the cross-sectional dimensions thereof and to provide the required tolerance between said tolerance ring and the opposing faces of the outer ring pieces which enclose the wedge-shaped gap.
Abstract:
A circular sawing machine for panels (1) comprises a base (4), a carriage (2) which moves on a rail (6) by means of bearings (7), a fixed table (3), a disk-shaped cutting tool (5), and has a longitudinal groove (C) in the rail (6), next to a race (p) for the bearings (7) on the rail (6), where the groove (c) has a surface (15) which when subjected to thrust transversally deforms the adjacent race (p) to adjust the preloading on the bearings (7); there also being elements (12) which may be inserted in the groove (c) and tightened in an adjustable fashion using means (14) against the wall (15) of the groove. In the machine, the elements (12) which may be inserted in the groove (c) are sections of a bar (13) which are longitudinally aligned without interruptions.
Abstract:
Die Erfindung betrifft einen Druckring, insbesondere Axiallagerdruckring zur Bildung einer Lauffläche für Wälzelemente, für den Einsatz in Lagersystemen für Zapfenkreuze von Gelenkwellen;
mit einer ersten ebenen Stirnseite und einer zweiten Stirnseite; mit zwei bezüglich einer ersten Symmetrieachse S D des Druckringes symmetrisch bearbeiteten Flächenbereichen an der zweiten Stirnseite; jeder der symmetrisch bearbeiteten Flächenbereiche ist hinsichtlich seines Verlaufes in Umfangsrichtung von der ersten Symmetrieachse ausgehend in Umfangsrichtung bis zu einer weiteren zweiten, senkrecht zur ersten Symmetrieachse S D verlaufenden zweiten Symmetrieachse S SD hin betrachtet, durch eine Querschnittsänderung des Druckringes beschreibbar, welche durch eine Abnahme der die Querschnittsfläche beschreibenden Dickenabmessungen im Bereich des Innenumfanges und des Außenumfanges des Druckringes charakterisiert ist, wobei im Bereich des Innenumfanges eine geringere Abnahme der Dickenabmessungen als im Bereich des Außenumfanges vorliegt.
Abstract:
A spindle motor for office automation equipment such as a computer hard disc drive including a compound bearing with a stepped shaft (5) mounted in a sleeve (10) having two raceways (11, 12) formed in its inner surface by means of a first row of balls (13) which run between one of the sleeve raceways (11) and a raceway (6) formed around a larger shaft portion and a second row of balls (14) which run between the other sleeve raceway (12) and a raceway (7) formed around an inner ring (8) which is mounted on a smaller diameter shaft portion. The ring (8) is adhered to the shaft (5) while being axially biased to reduce bearing play. The shaft (5) may then be connected to a motor base (2) or a rotor hub (9). Alternatively or in addition the sleeve (10) may be connected to these components.
Abstract:
In a bearing apparatus having a bearing (12) and a shaft body (11), the bearing being mounted to the shaft body such that the bearing (12) fits an outside of the shaft body (11), the bearing being prevented from dropping off by holding a caulked portion (13) against an outer end face of an inner ring of the bearing, and the caulked portion being formed by bending a cylindrical portion to be caulked of the shaft body outward in a diameter direction, an axial force controlling method controls an axial force applied to the bearing through the caulked portion by setting a relationship between relative positions (A,B) in an axial direction of an end edge on an inner periphery side of a chamfered portion formed at an inner peripheral shoulder portion of the inner ring and a caulking starting point on an inner periphery side of a cylindrical portion to be caulked.
Abstract:
A bearing arrangement, for example, for a variable pitch propeller, has a fluid operated actuator (42, 34, 40) for causing relative movement between bearing surfaces of races (12, 32) so as to preload bearings (30) held therebetween. Mechanical locking means (34, 36, 38) is provided to maintain the bearings under preload when the fluid pressure is released from the actuator.