Two hybrid ball bearings and a compressor bearing arrangement with two hybrid ball bearings for a rotatable support of a rotor of the compressor versus a stator of the compressor. The two hybrid ball bearings are arranged face-to-face or back-to-back, are designed with an optimal axial clearance depending on the inner diameter of a ring-shaped inner raceway element one of the hybrid ball bearings respectively a pitch diameter of one of the two hybrid ball bearings for a long bearing life in connection with an optimal compressor operating performance.

An electronic device can include a motor that rotates a shaft that is coupled to a gear. A belt or a chain can be placed in contract with the gear and other rotational devices. For optimum performance, the chain or chain should be adjusted to an optimum tension. The tension can be adjusted by moving the motor and securing the motor in a position the provided the optimum tension. Alternatively, the motor can be in a fixed rigid position and an idler pulley in contact with the belt or chain can be positioned to provide the optimum tension.

A bearing assembly for a wind turbine includes a bearing comprising an outer race, an inner race rotatable relative to the outer race, and a plurality of roller elements positioned within at least one raceway defined between the outer and inner races. Further, at least one of the outer race or the inner race defines a radial opening. The bearing assembly also includes at least one ball plug positioned within the radial opening of at least one of the outer race or the inner race. The ball plug(s) is removable such that the plurality of roller elements can be inserted between the outer and inner races. Moreover, at least a portion of the ball plug(s) has a tapered cross-section.

Wheel bearings utilize two sets of tandem ball bearings. Each set of tandem ball bearings utilize a single cage that staggers the circumferential positions of balls in one row relative to balls in a second row. As a result of the staggering, the two rows can be closer together. This improves the wheel bearing stiffness relative to tilting without increasing the overall bearing dimensions.

The present innovation relates generally to propulsion mechanisms for propeller-driven vehicles and vessels, and, more particularly, to gear-driven transmissions for airboats.

A slewing bearing providing a first ring, a second ring, the first and second rings being in relative rotation around a rotation axis, and at least one row of rolling elements arranged between the rings. The slewing bearing is further provided with a sealing device including at least one seal having an annular heel fixed to the first ring, and a sealing lip in sliding frictional contact with the second ring, and a deflector mounted to a lateral surface of second ring and having a deflecting part that at least partially radially surrounds the sealing lip.

A slewing bearing including a first ring, a second ring, the first and second rings being in relative rotation around a rotation axis, at least one row of rolling elements arranged between the rings, and at least two seals having each an annular heel mounted on a cylindrical frontal surface of first ring, and an oblique sealing lip in sliding frictional contact with part of the second ring. The slewing bearing further includes a guiding ring axially arranged between the two seals. The guiding ring provides a flange that prevents the reversion of one sealing lip, and an annular axial collar that radially blocks the annular heel of the other seal in a radial outwards direction.

A slewing bearing including a first ring, a second ring, the first and second rings being in relative rotation around a rotation axis, at least one row of rolling elements arranged between the rings, and at least one seal mounted in a circumferential groove of first ring. A cap is fixed to the first ring and provides a cap sealing member having an annular heel mounted in an circumferential slot formed on a frontal surface of cap, and a sealing lip projecting from the heel and towards the second ring. The sealing lip has a free end in sliding frictional contact with part of the second ring.

According to the embodiments of the present invention, the range of control for the frictional force on a steering shaft is increased, the frictional force can be sustained at a set level to enhance the steering feel, the number of parts is reduced to improve ease of assembly and reduce cost of production, and deformation of the steering shaft can be minimized.

A bearing assembly includes first and second rolling-element bearings each having first and second bearing rings, a raceway and a flange element at both ends of the raceways. Two of the flange elements are formed on a common flange body, and the flange body is axially pressed onto cylindrical mounting surfaces of the first bearing rings of the first and second rolling-element bearings and held in place by a press fit.