Abstract: An electric valve may include an electric machine having a rotor and a stator, a valve body drivingly connected to the rotor, a valve seat cooperating with the valve body, a housing in which the rotor and the stator are arranged, a split pot arranged in the housing and fluidically separating a dry region from a wet region in the housing, and a spring assembly including at least one spring. The rotor may be arranged in the split pot. The stator may surround the split pot radially on an outside in a circumferential direction. The split pot may protrude beyond an axially outer front side of the rotor. The spring assembly may be coupled to the housing and may rest on the front side spaced apart from the housing such that the spring assembly mechanically impinges on the stator radially and axially.

Abstract: A motor includes a stator and a rotor having a rotor shaft. The motor includes a bearing having an inner ring and an outer ring that are configured to rotate relative to each other. The inner ring is supported by the rotor shaft. The motor also includes a holder that supports the outer ring. The holder is clearance-fitted to a retainer on a stator side. A rotation prevention apparatus configured to prevent the rotation of the holder is positioned between the holder and a stopper member on the stator side.

Abstract: A joint assembly (10) including a female member (12), a male member (40) and a retaining member (60). The female member has a first axial end (18), a second axial end (20) and a cylindrical body portion (14) extending between the first axial end and the second axial end having a splined radially inner surface. The male member has a first axial end portion (42), a second axial end portion (46), and a splined tubular portion (44) extending between the first axial end portion and the second axial end portion. The retaining member (60) includes an annular portion and a plurality of attachment features defining an aperture. The second axial end portion of the male member has a circumferential groove (48) on the outer surface thereof. The second axial end portion of the male member extends through the aperture of the retaining member and the attachment features extend into the groove of the male member.

Abstract: A seal and bearing assembly having a bearing received within a housing. The bearing is disposed radially outwardly of a shaft and having an inner portion and an outer portion. The outer portion has a protrusion extending at least in an axial direction. An outer diameter of the outer portion is sized to provide a radial gap between the outer diameter and the housing section. The gap receives a film of lubricant for damping movements of the bearing relative to the housing section. A sealing member has a rotating portion configured for rotation with the shaft radially spaced apart from a static portion defined by the protrusion of the bearing outer portion. There is also disclosed a method of operating such an assembly.

Abstract: A method of operating a gas turbine engine of a multi-engine aircraft is disclosed, where the gas turbine engine has an engine shaft mounted for rotation in a bearing of a bearing assembly. The method comprises limiting motive power supplied to the aircraft by the gas turbine engine by operating the gas turbine engine in a standby mode; and when the gas turbine engine is operating in the standby mode, using an oil piston integrated in the bearing supporting the engine shaft of the gas turbine engine to generate an axial preload force on the bearing.

Abstract: A method of making a preloaded bearing arrangement and a preloaded bearing arrangement are provided. The method comprises the steps of placing a bearing around a shaft and then placing a frustoconical disc spring around the shaft such that a portion of the disc spring abuts the bearing. A deformable cup is placed around the shaft, and an annular section of the deformable cup is spaced apart from the frustoconical disc spring and the cup is held at a fixed position along the shaft. A split shim is inserted between the annular section of the deformable cup and the disc spring to apply a preload to the disc spring. The deformable cup is then deformed such that a sidewall of the deformable cup extends around the split shim to hold the split shim in place relative to the shaft.

Abstract: An actively controlled squeeze film damper system comprises a housing defining an annulus receiving a damping fluid during operation, a lubricant source supplying damping fluid to the annulus, and a sensor assembly for measuring a parameter indicative of a compressibility of the damping fluid. A control device adjusts the compressibility of the damping fluid within a predefined range.

Abstract: An integrated bearing section includes a mandrel partially disposed within a housing. The bearing section includes spherical members disposed between the mandrel's outer surface and the housing's inner surface. A radial bearing portion is formed by spherical members disposed partially within grooves and engaging a flat profile opposing surface. The grooves may be in the mandrel's outer surface, an outer surface of a mandrel sleeve, the housing's inner surface, or an outer radial bearing's inner surface. The flat profile opposing surface may be on an outer radial bearing's inner surface, the housing's inner surface, the mandrel's outer surface, or a mandrel sleeve's outer surface. A thrust bearing portion is formed by spherical members disposed partially within grooves in two opposing surfaces, such as the mandrel's outer surface or a mandrel sleeve's outer surface, and the housing's inner surface or an outer thrust bearing's inner surface.

Abstract: A system for operating a turbo machine to maintain bearing engagement, the system including a bearing assembly; a first displacement device adjacent a bearing race; a second displacement device disposed adjacent the bearing race opposite of the first displacement device; an effort supply system disposed adjacent to the first and/or second displacement devices; and one or more controllers configured to perform operations. The operations include generating a first effort input at the first and/or second displacement devices; adjusting a thrust loading at the bearing assembly; generating a second effort input at the first displacement device greater than the first effort input; and displacing the bearing race opposite of the thrust loading at the bearing assembly via the generated second effort input at the first displacement device.

Abstract: A spindle device includes: a spindle housing; a spindle shaft configured to be rotatably supported inside the spindle housing; a spindle mount having an insertion cavity into which the spindle housing is inserted along the axial direction of the spindle shaft; a flange portion projecting outward from the outer peripheral surface of the spindle housing and configured to be removably fixed to an end of the spindle mount that is closer to one opening of the insertion cavity; and a support member configured to support the spindle housing inserted in the insertion cavity by using, as a base, the other end of the spindle mount that is closer to the other opening of the insertion cavity.

Abstract: An axle assembly having a rotor bearing preload module. The rotor bearing preload module may be disposed between a first and second rotor bearing assemblies. The rotor bearing preload module may include a biasing member that may bias the first rotor bearing assembly away from the second rotor bearing assembly.

Abstract: A preloaded ball bearing assembly includes a primary bearing assembly disposed between a rotating component and a static structure. The assembly also includes a preload bearing assembly disposed in contact with the rotating component. The assembly further includes a flexible support disposed between the primary bearing assembly and the preload bearing assembly.

Abstract: Systems and methods are provided for remotely managing tangible resources. In one embodiment, a method may employ a computer-based system to receive resource information, categorize the resource information, and provide the categorized resource information within a matrix.

Abstract: A bearing assembly for an electrical generator includes a frame, a bearing liner and a ring. The frame is configured to connect with a housing of an electrical generator. The frame includes a frame opening and is made from a first material. The bearing liner connects with the frame. The bearing liner is made from a second material, which is dissimilar from the first material. At least a portion of the bearing liner passes through the frame opening. The ring surrounds the bearing liner. The ring contacts the frame and the bearing liner and maintains a clearance between the portion of the bearing liner passing through the frame opening and the frame.

Abstract: A ball bearing sleeve is used in a turbocharging device. The ball bearing sleeve has one or more ball bearings that are designed to control loads that are applied to the sleeve in the x, y and z-directions. The ball bearing sleeve is designed to replace the “thrust bearing” that is typically the “weak link” in a turbocharging device, as well as the journal bearings. The sleeve is designed to include a cylindrical portion that includes one or more grooves for directing the flow of oil around the sleeve for cooling. An oil duct having access holes directs the flow of oil into the ball bearings. Sleeve device may be retro-fitted into an existing turbocharger, which originally had journal and thrust bearings.

Abstract: Disclosed is a lubricating apparatus including an oil supply pipe connected to a gearbox of a gearing device for transmitting turning force of a blowdown turbine in the turbo compound system to a crankshaft to supply oil into the gearbox, a first oil supply opening formed to be transpierced at the bearing housing of a first bearing rotatably supporting a shaft of an output gear for outputting turning force in the turbo compound system to supply oil supplied from the gearbox to the first bearing, a sub-supply pipe connected to a gear case in which the output gear is embedded to supply oil to the gear case, and a second oil supply opening formed to be transpierced at the bearing housing of a second bearing rotatably supporting the shaft of the output gear to supply oil supplied through the sub-supply pipe to the second bearing.

Abstract: An axial load bearing assembly that may be for a steering gear box apparatus includes a first member, a second member, a jacket, and an elastomeric ring. The first member includes a first surface facing axially with respect to a centerline. The second member is constructed and arranged to move axially with respect to the first member between an extended state and a compressed state. The second member includes a second surface that axially opposes the first surface. The jacket is engaged to one of the first and second members, and includes a face facing radially inward. The elastomeric ring is disposed axially between the first and second members for axial compression, and is in biased contact with the face at least when in the compressed state preventing radial expansion of the elastomeric ring during axial compression.

Abstract: A bearing arrangement comprising: a first bearing including a first inner race coupled to a rotatable component, a first outer race; and a plurality of first roller elements between the first inner race and the first outer race; a second bearing including a second inner race coupled to the rotatable component, a second outer race, and a plurality of second roller elements between the second inner race and the second outer race; a component, the first outer race being axially moveable relative to the component; and a member between the first bearing and the second bearing and arranged to provide an indirect first force on the first outer race to prevent the first roller elements from skidding when the first bearing and the second bearing receive a second force in a first direction, the second bearing being configured to transfer the second force to the component.

Abstract: A method of setting a bearing system is provided, The method includes applying a first set-up load to the bearing system. The method also includes measuring a first set-up clearance value between a cup carrier of at least one of a first tapered roller bearing and a second tapered roller bearings and a housing. The method further includes applying a second set-up load to the bearing system. The method includes measuring a second set-up clearance value between the cup carrier of at least one of the first and second tapered roller bearings and the housing. The method also includes determining a final set-up clearance value between the cup carrier of at least one of the first and second tapered roller bearings and the housing. The method further includes positioning a shim between the cup carrier of at least one of the first and second tapered roller bearings and the housing.

Abstract: A turbocharger assembly can include a shaft having a rotational axis where the shaft includes a turbine wheel that includes a hub portion; a bearing that includes an outer race, an inner race operatively coupled to the shaft, and rolling elements disposed between the inner race and the outer race where an inner radius of the outer race and an outer radius of the inner race define a radial gap; and a lubricant slinger disposed axially between the inner race and the hub portion of the turbine wheel where the lubricant slinger includes a surface that faces and slopes away from the radial gap.

Abstract: A bearing assembly includes a roller bearing connected with a plate-shaped bearing support. The bearing support has a receiving bore for an outer ring of the roller bearing, and the outer ring of the roller bearing is affixed to the bearing support with two affixing plates that are fixed to first and second end sides of the bearing support. The two affixing plates clamp the outer ring at two clamping surfaces. An axial spacing of the first and second end sides of the bearing support is smaller than an axial spacing of the clamping surfaces of the outer ring, and a spring element configured to act in the axial direction is disposed between one of the two affixing plates and the bearing support.

Abstract: Load sharing stacked bearing structure including first bearing having a first inner race, first outer race and first set of roller elements housed between first inner race and first outer race and a second bearing having a second inner race, second outer race and second set of roller elements housed between second inner race and the second outer race. A housing surrounds the first and second bearings. First compliant element is provided with the first compliant element connected between the housing and the first outer race. The first compliant element, first outer race and housing define at a pressure chamber. The first outer race axially slidable relative to the second outer race such that an increase in pressure in pressure chamber causes a change in axial spacing between the outer races. This induces an additional axial load on the bearings which helps balance thrust load sharing.

Abstract: A bearing system for a turbocharger includes a bearing housing having a first end and a second end, with the bearing housing defining a central passageway. A first ball bearing and a second ball bearing are received by the bearing housing. The second ball bearing is spaced from the first ball bearing. The first and second ball bearings are each preloaded.

Abstract: A fuel-saving apparatus using a variable preload of vehicle bearings is provided. The fuel-saving apparatus includes a housing that supports a driving shaft of a vehicle, a bearing that is mounted in the housing and rotatably supports the driving shaft, and a variable preload unit that is provided at the housing or a side adjacent to the housing and applies a preload to an outer wheel or an inner wheel of the bearing. The fuel-saving apparatus using such a variable preload may reduce a driving load acting on the driving shaft by a fixed preload acting by the bearing, thereby reducing the driving load of an engine and saving fuel.

Abstract: A steering bearing for bearing a steering column of a motor vehicle, including an inner ring and an outer ring having respective raceways on which balls roll, the outer ring being enclosed by a sleeve in which a spring ring is arranged. The spring ring tensions the balls against the respective raceways and the balls roll on said spring ring.

Abstract: A ball bearing sleeve is used in a turbocharging device. The ball bearing sleeve has one or more ball bearings that are designed to control loads that are applied to the sleeve in the x, y and z-directions. The ball bearing sleeve is designed to replace the “thrust bearing” that is typically the “weak link” in a turbocharging device, as well as the journal bearings. The sleeve is designed to include a cylindrical portion that includes one or more grooves for directing the flow of oil around the sleeve for cooling. An oil duct having access holes directs the flow of oil into the ball bearings. Sleeve device may be retro-fitted into an existing turbocharger, which originally had journal and thrust bearings.

Abstract: An industrial robot may include a main body part; a plurality of levers having base end sides turnably connected with the main body part; a plurality of arm parts having respective base end sides turnably connected with respective tip end sides of the plurality of the levers; a movable part which is turnably connected with the respective tip end sides of the plurality of the arm parts; and a plurality of turning drive mechanisms for respectively turning the plurality of the levers. The plurality of the levers may radially extend to an outer peripheral side of the main body part at a substantially equal pitch. The arm part may provided with two arms which are mutually parallel to each other and are formed in a straight shape.

Abstract: A rolling bearing arrangement (1) of a shaft (2) of an exhaust-gas turbocharger (3) having two spaced-apart rolling bearings (4, 5), the inner rings (6, 7) of which are arranged on the shaft (2) and between which (6, 7) is arranged a spacer (8), and the outer rings (9, 10) of which are seated in a bearing bushing (12) which is fastened in a bearing housing (11); and having an oil supply device (13) arranged in the bearing housing (11), which oil supply device is flow-connected to an oil supply duct (14A, 14B) which is arranged in the bearing bushing (12) and which opens into an annular chamber (15). A check valve (16) is arranged in the oil supply duct (14A, 14B).

Abstract: A rack drive assembly adapted for use in a vehicle electric power steering assembly includes a ball nut assembly operatively connected to a screw portion of a rack portion of a steering member of the power steering assembly for effecting axial movement of the steering member upon rotation of a vehicle steering wheel. According to one embodiment, the ball nut assembly includes a first bearing assembly disposed in the rack housing and carried by a ball nut, the first bearing assembly disposed on a first end of the ball nut adjacent a first side of the pulley; and a second bearing assembly disposed in the rack housing and carried by the ball nut, the second bearing assembly disposed on an opposite second end of the ball nut adjacent a second side of the pulley.

Abstract: The invention concerns a large-size rolling bearing which is in the form of a multi-row ball-bearing rotary joint for carrying axial loads, radial loads and tilting moments. The large-size rolling bearing has an outer race, an inner race, a first ball row and a second ball row. The first ball row and the second ball row are respectively arranged in axially mutually spaced relationship in a four-point bearing configuration, associated with the first ball row are four raceway portions and associated with the second ball row are four raceway portions. The invention concerns in particular a large-size rolling bearing in which a surface of a respective raceway portion provided in the inner race is larger than the surface of the respectively adjacent raceway portion provided in the inner race and equal to the surface of the respectively diametrally oppositely disposed raceway portion provided in the outer race.

Abstract: A rotary position encoder is described that includes a hub configured to mount on an end of a rotatable shaft of a machine tool and rotate concurrently with the rotatable shaft. The hub includes a cup formed in a first end to receive the rotatable shaft, the cup having equally spaced axial grooves formed on an inner surface. A collar clamps the hub to the rotatable shaft by collapsing the cup around the rotatable shaft. The rotary position encoder further includes a sensor configured to detect a rotational position of the hub and a housing, wherein the sensor is mounted to the housing in a position opposite a second end of the hub. The hub is rotatably coupled to the housing via a bearing and a bracket is attached to the housing for mounting the rotary position encoder to the machine tool and preloading the bearing.

Abstract: An electric motor includes a rotor having a rotary shaft, a pair of ball bearings for supporting the rotary shaft, and two brackets having bearing housings for holding the ball bearings. The motor further includes a washer between one of the ball bearings and an end wall of one of the bearing housings. The washer includes a plurality of claws. The washer is configured including a ring-shaped yoke and the claws the center parts of which are fastened to the yoke. These claws are configured to be bent in a U-shape, and the center part of the U-shape is fastened to the yoke.

Abstract: A bearing arrangement comprises: first and second thrust bearings, each including an inner race which is disposed on a shaft and an outer race which is supported by at least one resilient element. Applying a shaft thrust load elastically deforms the resilient elements so as to axially displace the respective outer races in order that the thrust load is shared between the first and second thrust bearings.

Abstract: Bearing structure including a first bearing, surrounded by a housing, having a first inner and outer race and first set of rolling elements between the inner and outer races and a second bearing having a second inner and outer race and second set of rolling elements between the second inner and outer races. A first compliant element is connected to the first outer race. A rigid diaphragm is connected to the first outer race between the compliant element and outer race, and is connected to the housing at its outer end. The first compliant element, outer race and rigid diaphragm at least partly define a pressure chamber. The first outer race is axially slidable relative to the second such that a pressure increase in the chamber changes the axial spacing between the first and second outer races, inducing additional axial load on the bearings which helps balance thrust load sharing.

Abstract: A bearing mechanism includes: an outer ring; an inner ring rotatably supported by a plurality of rolling elements on an inner peripheral side of the outer ring; a rotating shaft supported by the inner ring on an inner peripheral side of the inner ring; a supporting member supporting one of the outer and inner rings, the supporting member being configured to prevent the one ring from moving in an axial direction; and a centrifugal spring on an outer peripheral portion of the rotating shaft, the centrifugal spring being configured to generate preload between the outer and inner rings by applying pressure to the other ring of the outer and inner rings in the axial direction. The centrifugal spring is configured to elastically expand a diameter thereof and elastically contract in an axial direction thereof by a centrifugal force caused by integral rotation with the rotating shaft.

Abstract: A multiple row combination ball bearing 10 includes at least two rows of ball bearings 11A and 11B. A counterbore 12d is formed on a groove shoulder 12c of an outer ring 12 of the respective ball bearings 11A and 11B. The respective ball bearings 11A and 11B have an inner and outer diameter dimension and a width dimension corresponding to a standard bearing of the ISO standard. An extension line L of a contact angle ? of the ball bearing 11A passes through an axial direction end plane 12e of the ball bearing 11B which is adjacent to the ball bearing 11A at one side in the axial direction. The extension line L of the contact angle ? of the adjacent ball bearing 11B passes through the axial direction end plane 13e of the ball bearing 11A.

Abstract: A bearing is provided which includes a first set of rolling elements, a second set of rolling elements spaced away from the first set of rollers, a race at least partially enclosing the first and second sets of rolling elements, and a pre-loading element in the race between two outer sections of the race applying pre-load forces to the first and second set of rolling elements. In this way, a simplified bearing structure is achieved while better maintaining pre-load forces.

Abstract: A bearing unit for a turbocharger, including a bearing housing which extends in an axial direction, a bearing cartridge, situated within the bearing housing, having an outer bearing ring, and a securing element, situated on the bearing housing, for the twist-free positioning of the outer bearing ring within the bearing housing. The sum of the forces acting on the outer bearing ring is essentially zero. A bearing unit of this type prevents twisting of the outer bearing ring without reducing the vibration-damping effect of the quenching oil film.

Abstract: A hub-bearing assembly for agricultural use having a rolling bearing, a housing, a closing cap and an axial retention feature. The roller bearing includes an outer ring, at least one inner ring, at least a row of rolling bodies and a sealing device. The housing includes an almost annular cylindrical shape, the housing at one end forming a radial flange, containing the rolling bearing and being in direct contact with the bearing outer ring. The closing cap is assembled on the housing at the opposite end with respect to the end, where the housing forms the flange. It is noted that the cap is cup shaped. The axial retention feature is located along an external surface of the outer ring. The retention feature is located opposed to the axial sliding of the outer ring with respect to the housing.

Abstract: The disclosure discloses a rotating electrical machine that is integrally formed with a reduction device having an input shaft to which a roller gear cam is provided and an output shaft to which cam followers configured to sequentially engage with the roller gear cam is provided on an outer periphery, extending along a direction orthogonal to the input shaft, and is configured to employ one of a field system or an armature as a rotator and the other of the field system or the armature as a stator, including a rotating shaft that is fixed to the rotator and integrally formed as a single shaft with the input shaft of the reduction device.

Abstract: A rolling bearing device, of the type including a central shaft and a hub (10) mobile in rotation relative to each other, the bearing including at least two rolling bearings (12, 13), one designated “lower” and the other designated “upper”, arranged between the central shaft (11) and the hub (10) in two positions spaced in the axial direction Z, these rolling bearings being fitted with inner (14, 16) and outer (15, 17) rings and with balls (18, 19), the rolling bearings being assembled back-to-back or face-to-face, a rigid preload being applied to these bearings along the axial direction Z, internal (22) and external (23) spacers being arranged between these rolling bearings, the inner (22) and outer (23) spacers have lengths adjusted to limit variations in rigid preload caused by temperature gradients from one point of the bearing to another to less than 30%, particularly thermal gradients in the radial direction.

Abstract: One embodiment of the present invention is a unique gas turbine engine. Another embodiment is a unique gas turbine engine high speed rolling element bearing system. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines and high speed rolling element bearing systems for gas turbine engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application shall become apparent from the description and figures provided herewith.

Abstract: A ball-screw assembly isolator is provided, and includes a housing; a ball-screw, a bearing assembly, a retaining member, a first compressible member and a second compressible member. The bearing assembly is located between the housing and the ball-screw. The bearing assembly includes an outer race. The retaining member is secured by the housing. The first compressible member is positioned between the housing and the outer race. The second compressible member is positioned between the outer race and the retaining member. The retaining member is configured to be preloaded to exert an axial force upon the first compressible member and the second compressible member.

Abstract: A wave washer is used for a shaft supporting device of an electric power steering system. The wave washer has an annular portion and six outward protrusions. The annular portion has first protrusions that protrude in a first axial direction and second protrusions that are formed so as to continuous with the first protrusions and that protrude in a second axial direction. Each outward protrusion protrudes from an outer periphery of the annular portion in a radially outward direction of the radial direction of the annular portion.

Abstract: A prestressing device extending about an axis between a first plane that is substantially perpendicular to the axis and a second plane that is substantially parallel to the first plane and axially offset relative to the latter. The device includes a first annular body extending in the first plane, and a first series of at least three tabs, each of which is connected to the first body and extending in an essentially radial direction, each of the tabs of the first series including a planar surface extending in the second plane. This arrangement ensures surface contact between the parts of the elements to be subjected to prestressing. The device can be used for example for a rotor, and for example for a rotor of an unducted propeller for a turbine engine.

Abstract: An axial flux electric machine and associated method of use that includes a shaft, a rotor attached to the shaft, a plurality of permanent magnets positioned underneath the rotor, an electrical winding positioned below the plurality of permanent magnets, a stator that encircles the shaft that is located below the rotor, a first bearing assembly located below the stator and encircling the shaft of the rotor, a second bearing assembly located below the first bearing assembly and encircling the shaft, and a spring mechanism, located between the first bearing assembly and the second bearing assembly, to distribute load placed on the shaft between the first bearing assembly and the second bearing assembly.

Abstract: A preloaded rolling bearing assembly is provided. The rolling bearing assembly includes radially inner and outer bearing rings. The radially inner bearing ring includes a radially outer race, and the radially outer bearing ring includes a radially inner race, and a peripherally extending notch positioned at least on an axial end face of the radially outer bearing ring or the radially inner bearing ring. The rolling bearing assembly includes a plurality of rolling elements supported to roll on the radially outer race of the radially inner ring and the radially inner race of the radially outer ring. A preload element is positioned at least partially within the notch and extends past the axial end face of the radially outer bearing ring.

Abstract: A spring washer is disclosed for axially preloading anti-friction bearings. The spring washer can include an outer ring and an inner ring that is coaxially arranged with respect to the outer ring. An axis is defined by the two rings. Outer and inner rings are connected through several resilient connection rods. Resilient cantilevered rods can be provided which extend from one of the rings in between the connection rods and which have a free end at the opposite positioned ring. Thereby, the cantilevered rods can be axially bent up such that the free end has an axial offset.

Abstract: The damping property of a rear rolling bearing (133) is adjusted by controlling a damping force that is applied by damping application means (5, 134) based on, for example, the type of a tool (T). Thus, it is possible to provide the optimum damping properties for various tools that differ in natural vibration, and to suppress the generation of chattering of the various tools. As a result, it is possible to increase the cut amount per unit time to increase the productivity.

Abstract: A bearing preload adjuster for a bicycle crank set and bottom bracket comprises an adjustment ring for coupling with a bicycle crank arm, a movable plunger comprising an external thread for rotatably coupling with the adjustment ring. The adjustment ring is rotated in order to cause the plunger to extend along an axis of the bottom bracket and apply pressure to a bottom bracket bearing inner race. The adjustment ring is rotated until the clearance in the bearing assemblies and the play in the bottom bracket assembly has been eliminated. This allows the crank assembly to rotate freely, while preventing the crank assembly from sliding side to side inside the bearing bores and along the axis of the crank spindle.