摘要:
A planar high-density ball bearing comprises a cage and balls; the cage is provided with multiple groups of ball holes for arranging the balls; the ball holes in each group are distributed in the circumferential direction of the cage in an ellipse; the centers of the ellipses in each of which a group of ball holes is distributed coincide with each other, the major axes of the ellipses lie in a common line. The ball holes in adjacent groups are arranged to be staggered in relative to each other in the circumferential direction of the cage, and the balls in the same group of the ball holes are distributed in an ellipse. A method for manufacturing the planar high-density ball bearing, nutation reducer are provided.
摘要:
The bearing includes a first ring, a second ring, at least one row of radial and axial rolling elements arranged between axial and radial raceways provided on the rings. The second ring has a protruding nose engaged into an annular groove of the first ring and provided with the axial raceway and with the radial raceway of the second ring. The bearing further provides at least one cage for maintaining the row of axial rolling elements, at least one flange for guiding and maintaining the cage in radial direction, and a plurality of fixing screws to secure the flange to the first ring. The flange axially abuts against a flat surface of the first ring. The fixing screws extend axially through the flat surface of the first ring.
摘要:
A thrust bearing has an outer race and an inner race arranged for rotation relative to the outer race about an axis of rotation. Multiple rolling elements are positioned between the inner and outer races. A cage is positioned between the inner and outer races and configured to engage with the rolling elements to align the rolling elements into multiple rows, with the rows circumferentially spaced apart from one another.
摘要:
The invention relates to a medical device with a machine element mounted so as to be linearly movable and at least one linear guide, comprising at least one ball bearing and defining a longitudinal axis, for guiding a linear movement of the machine element parallel to the longitudinal axis, said at least one ball bearing comprising a plurality of balls which are movably held in corresponding ball holders and which guide the machine element, wherein the plurality of ball holders are constructed in the form of elongated holes.
摘要:
A rolling-element bearing for an electromagnetic solenoid includes a hollow cylindrical cage with a plurality of spherical pockets formed around a first circumference and a second circumference of the cage. The pockets around the first circumference are offset from the pockets around the second circumference. Spherical rolling elements are provided in the spherical pockets and are captured for free rotation in the first pockets and second pockets.
摘要:
A thrust bearing having a circular cage with rolling elements disposed in at least some of pockets formed in the cage, upper and lower raceways having inward-facing surfaces disposed adjacent to the cage so that a first plurality of rolling elements is in rolling contact with the upper and lower raceways when the thrust bearing is in a first load condition and a second plurality of rolling elements is in rolling contact with the upper and lower raceways when the thrust bearing is in a second load condition.
摘要:
A bearing device includes inner ring rolling surfaces formed so that the external radius of inner end portions of a first inner ring and a second inner ring is smaller than a first separation distance and formed so as to have an external radius that becomes larger from an inner side toward the other side, and outer ring rolling surfaces formed so that the internal radius of outer end portions of a first outer ring and a second outer ring is larger than a second separation distance and is formed so as to have an internal radius that becomes smaller from the outer side toward the inner side.