Abstract: A bicycle bearing system comprising: an integrated cup, the integrated cup having a non-flanged outer diameter; a plurality of rolling elements configured to abut and rotate against an inner surface of the cup race; an inner race configured to abut and rotate about the plurality of rolling elements, the inner race having an inner diameter; wherein the rolling elements do not have a separate outer race, but rather the inner surface of the integrated cup acts as the outer race to the rolling elements; wherein the rolling elements' sizes are maximized to the limitation that the non-flanged outer diameter is smaller or equal to a first maximum diameter, and wherein the rolling elements sizes are maximized to the limitation that the inner diameter is greater or equal to a first minimum diameter.

Abstract: A cage for a ball bearing, including: a first annular flange; a second annular flange; a plurality of ball retention segments; and a plurality of spaces. Each ball retention segment includes: a first portion fixedly connected to the first annular flange; a second portion fixedly connected to the second annular flange; and, a middle portion connecting the first portion and the second portion. Each space is circumferentially bounded by a respective pair of circumferentially adjacent ball retention segments, and arranged to receive a ball of the ball bearing. A cross-section, including the first annular flange, the second annular flange, and a ball retention segment of the plurality of ball retention segments, is in a shape of an M.

Abstract: A golf club device for improving one's golf abilities is disclosed. The device includes a head, and a shaft where the head is rotatably connected to at least an upper portion of the shaft. Rotation is achieved with an angular rotation mechanism. The angular rotation mechanism may include a variable resistance feature. The angular rotation mechanism may be positioned in or on the head, or it may be positioned in the shaft. One or more visual alignment indicators may also be employed.

Abstract: In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ball. The concave surface includes a linear contact portion to be in contact with the ball and an approximate curved surface having the radius of curvature approximate to that of the ball, which is located on the inner side of the linear contact portion. In addition, recesses which are joined to the gate portion and the ejector pin in a molding process are formed in the concave surfaces. A recess is formed at the joining portion or near a parting line. Fins formed in the molding process are capable to be put into the recess.

Abstract: A ball bearing has an outer race, an inner race and a plurality of balls disposed between the races. The balls are spaced on a pitch diameter to provide a rolling medium between the races to accommodate differential rotation between the races. The ball spacing is maintained by a separator having a pocket for each ball. The pockets are distributed around the pitch diameter in a random manner to reduce vibratory impulses which might be imposed by the surfaces of the races.

Abstract: An axial rolling bearing including first and second bearing disks, a plurality of rolling members situated between bearing disks and a cage for maintaining rolling members in spaced relationship to each other, the improvement of a radial guidance system for cage comprising a plurality of bearing elements mounted to the cage and engaging at least one of the bearing disks, and adjusting each of the bearing elements in a radial direction for reducing friction between the cage and the bearing disk engaged by the bearing elements.

Abstract: The radial roller bearing has an outer ring (1), an inner ring (2), several roller members (3), and a cage (4). The cage (4) is guided on the edges (1a) of the outer ring (1) via several supporting rollers (5) distributed around the circumference in the form, for example, of ball bearings. This makes it possible to avoid sliding friction for guiding the cage (4) and to guide the cage without any clearance, so that the roller bearing can attain a high limit speed.

Abstract: A bearing device for high-speed rotary machines comprises a first rolling-element bearing having a retainer for holding constant spacing of rolling elements inserted between an inner race and an outer race thereof and also a second bearing for supporting the retainer of the first rolling-element bearing, thereby the retainer of the first rolling-element bearing is prevented from contacting with the inner race or the outer race.