A camera module includes a housing, a carrier, a frame, a lens holder, an autofocusing (AF) ball bearing, and an optical image stabilization (OIS) ball bearing. The carrier is coupled to the housing and configured to move in an optical axis direction. The frame is coupled to the carrier and configured to move in a first axis direction, perpendicular to the optical axis direction. The lens holder is coupled to the frame and configured to move in a second axis direction, perpendicular to the optical axis and the first axis. The AF ball bearing is disposed between the housing and the carrier. The OIS ball bearing is disposed on either one or both of the carrier and the frame, and the frame and the lens holder. Either one or both of the AF ball bearing and the OIS ball bearing have an elastic modulus of 20 GPa or less.

A rolling bearing includes an outer ring, an inner ring disposed coaxially with the outer ring, the inner ring being on an inner peripheral side of the outer ring. The rolling bearing includes multiple rolling elements disposed between the outer ring and the inner ring. The rolling bearing includes a strain gauge configured to detect strain of the outer ring or the inner ring. The strain gauge includes a resistor formed of a Cr composite film.

A rotating device according to the present invention includes a motor including an outer shell, a rotating shaft protruding from the outer shell, a first inner bearing supporting the rotating shaft, and a second inner bearing supporting the rotating shaft, a plurality of gears configured to transmit rotation of the motor to an external device, and a casing. A first outer bearing and a second outer bearing are arranged at the casing, and the first outer bearing and the second outer bearing rotatably support portions of the rotating shaft protruding from end surfaces at both sides of the outer shell in a longitudinal direction of the rotating shaft.

The Hub Saver has a planar body formed of a sheet of resilient metal or material having a selected thickness between top and bottom surfaces to allow sufficient engagement of the axle spindle thread with which it is to be used and the compression washer, castle-nut, and cotter pin. The bolt circle pattern of smaller holes allows ample grease to the bearing assembly, should a greasing device be used. The outer diameter, inner diameter as well as the bolt circle diameter and placement, will vary depending upon the diameter of the respective spindles and races for the various bearing sizes.

A rotation induction device for a vehicle includes: an upper case member composed of a synthetic resin material and having a piston rod disposed therethrough; a lower case member composed of a synthetic resin material, disposed under the upper case member, and having the piston rod disposed therethrough; a center plate composed of a synthetic resin material, disposed between the upper and lower case members such that the piston rod passes through the center plate, and configured to induce either one or both of the upper and lower case members to rotate; and a stress distribution part formed on the center plate, and configured to distribute stress caused by a vertical load.

A rotation induction device for a vehicle includes: an upper case member composed of a synthetic resin material and having a piston rod disposed therethrough; a lower case member composed of a synthetic resin material, disposed under the upper case member, and having the piston rod disposed therethrough; a center plate composed of a synthetic resin material, disposed between the upper and lower case members such that the piston rod passes through the center plate, and configured to induce either one or both of the upper and lower case members to rotate; and a stress distribution part formed on the center plate, and configured to distribute stress caused by a vertical load.

A rotation induction device for a vehicle includes an upper case member, a lower case member, a center plate, and a friction reduction part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The friction reduction part, configured to reduce friction, is selectively disposed at a contact surface between the upper case member and the center plate, and a contact surface between the center plate and the lower case member. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

A rotation induction device for a vehicle includes an upper case member, a lower case member, a center plate, and a lubricant storage part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The lubricant storage part is formed in the center plate and configured to store lubricant therein. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

An assembly is provided for rotational equipment. This assembly includes a first component, a static structure, a guide rail and a second component. The static structure includes a static structure fluid passage. The guide rail is mounted to the static structure. The guide rail includes a guide rail fluid passage and a nozzle. The guide rail fluid passage fluidly couples the static structure fluid passage to a nozzle orifice of the nozzle. The nozzle is configured to direct fluid onto the first component through the nozzle orifice. The second component is mated with and configured to translate along the guide rail.

A rolling bearing device includes a rolling bearing that includes an outer ring having an inner peripheral surface on which a first raceway surface is provided, an inner ring having an outer peripheral surface on which a second raceway surface is provided, and rolling elements interposed between the first and the second raceway surfaces; a strain sensor configured to detect a strain of the rolling bearing; and a fixation portion configured to fix the strain sensor to a peripheral surface that includes at least one of an outer peripheral surface of the outer ring and an inner peripheral surface of the inner ring. The fixation portion fixes at least two locations in the strain sensor to the peripheral surface such that a detection region of the strain sensor and the peripheral surface are not fixed to each other, the at least two locations facing each other across the detection region.