A device for adjusting the bearing play of components mounted coaxially rotatable to one another and rotatably joined to one another via two axially separated roller bearings is operatively connected to one roller bearing by an end side and to a counter bearing by the opposing end side. The device is formed by two coaxially adjacent rings on one of the components. Each opposing end surface thereof has at least one contour projecting from the plane of the end surfaces. At least one contour has an incline on which the at least one opposing contour slides. One ring is operatively connected to the counter bearing by the other end surface. The other ring is operatively connected to the roller bearing. A device for mutual radial rotation and a device for locking the axially moving ring in the assumed axial position are on both rings.

Skewer for tightening a cycle wheel to the cycle frame, such skewer including a first end having a threaded portion cooperable with a female thread of a first frame portion, and a second end having axial abutment mechanisms for contacting a second frame portion, as well as drive mechanisms to enable a user to alternately exert a tightening torque or a loosening torque. A torque limiting mechanism operational in the tightening direction is positioned between the drive mechanisms and the rod. The skewer further includes a braking device to increase the torque required to initiate the rotation of the drive mechanisms in the loosening direction. The braking device includes two mutually contacting friction surfaces when the axial abutment mechanisms are in contact with the second frame portion. When the torque limiting mechanism is operational, the braking device becomes non-operational because the friction surfaces are no longer in mutual contact.

A pivot bearing arrangement, in particular a pivot bearing for a front wheel suspension system of a motorcycle, is provided that substantially reduces bearing breakaway torque, temperature sensitivity, complexity, space requirements and cost. The pivot bearing arrangement includes a first bearing part which enables a component to pivot about a first pivot axis, and a second bearing part which enables a component to pivot about a second pivot axis. The two bearing parts are connected to each other and form a structural unit.

A joint assembly including a housing including an inner diameter portion having a tapered surface; and at least one shaft having an outer diameter portion having a tapered surface that is complementary in shape to the inner diameter portion of the housing, where the shaft is adapted to rotate relative to the housing, and where the frictional fit is adjustable by modifying the axial position of the shaft relative to the housing.

A headset of a bicycle includes a bearing base, a bearing cup, at least two sealing elements, damping fluid, and a bearing. The bearing base is adapted to be sleeved on a fork tube. The bearing cup is adapted to be abutted against an end, close to the fork tube, of a head tube, and a gap is formed between the bearing cup and the bearing base. The at least two sealing elements are disposed between the bearing cup and the bearing base, and the at least two sealing elements, the bearing cup and the bearing base seal the gap to form a damping section. The damping fluid is disposed in the damping section to provide damping force. The bearing is disposed between the bearing base and the bearing cup and is abutted against the bearing base and the bearing cup.

A centring ring (5) and a method for reducing the risk of breakage of at least one thin-walled area of a centring ring (4) are proposed, the centring ring (5) having at least two thick-walled segments, i.e. at least one first thick-walled segment (15) and one second thick-walled segment (16), said first thick-walled segment (15) having a side surface (23) which faces a side surface (31) of the second thick-walled segment (16), said side surfaces (23, 31) touching each other at least partially or being separated from each other by a gap (37) having a given clearance B (38), and said centring ring (5) including at least one movement limiter (24, 48) which allows the side surfaces (23,31) to merely drift apart under the application of force and/or drift towards each other under the application of force until a certain clearance B (38) is reached.

An end cap device for bicycle cables is provided, including at least two tubular sleeves, each of the at least of two tubular sleeves having an opening configured to be sleeved on one of the bicycle cables, every two adjacent tubular sleeves connected by a connection section.

A linear motion assembly having a static coefficient of friction, S, as measured between an inner component and an outer component, and a dynamic coefficient of friction, .sub.D, as measured between the inner component and the outer component, wherein .sub.S/.sub.D is less than 2.0, such as less than 1.9, less than 1.8, less than 1.7, or even less than 1.6.

A steering system includes an arm, a knuckle, a joint, and a steering sensor. The arm defines a first passage. The knuckle has a knuckle arm defining a second passage. The joint has a ball portion and a shaft portion extending. The ball portion is disposed within the first passage and the shaft portion is disposed within the second passage. The ball portion defines a conical recess that has an opening at an upper end of the ball portion and terminates inside the ball portion with a pocket. The steering sensor has a driveshaft extending along a longitudinal axis into the conical recess. The driveshaft includes a head that engages with the pocket. The ball portion is configured to pivot within the first passage relative to the longitudinal axis and the head. The joint and the driveshaft are configured to rotate together about the longitudinal axis as the knuckle is turned.

A hub and a hub series are provided for at least partially muscle-powered bicycles. The hub includes a hub shell and a bearing unit for rotatably supporting the hub shell relative to an axle. The bearing unit includes two bearing rings having a take-up surface each and a raceway each. A bearing ring configured as an outer ring is oriented with its take-up surface to a bearing seat of the hub shell. A bearing ring configured as an inner ring is oriented with its take-up surface to the axle. Rolling members are disposed between the raceways of the bearing rings. The bearing ring includes a cut-out on its take-up surface for weight reduction so that the bearing ring is disposed spaced apart from the bearing seat and/or the axle in the region of the cut-out.