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49 results about "Surface tooth" patented technology

Outer door locking device of wind power generation substation

ActiveCN223922841UWing fastenersRotational axisSurface tooth
The utility model belongs to the technical field of wind power generation, and particularly relates to a wind power generation transformer substation outer door locking device which comprises a door frame, a door body is arranged in the door frame, a locking assembly is arranged on the surface of the door frame, and the locking assembly comprises a gear arranged in the door frame and an insertion plate arranged on the surface of the gear. A tooth block is fixedly connected into an arc-shaped groove formed in the end, close to the gear, of the inserting plate. The rectangular plate is pulled to drive the inserting plate to move, the tooth blocks are moved away from the teeth on the surface of the gear, the door body can rotate around the rotating shaft, after the rectangular plate is loosened, the tooth blocks can be inserted between the adjacent teeth on the surface of the gear under the action of elastic potential energy of the spring, and the position of the door body is fixed after the door body rotates.
Owner:大唐黑龙江新能源开发有限公司

Molding sheet for filling adjacent decayed teeth

The utility model discloses a forming sheet for filling adjacent dental caries, and relates to the technical field of dental caries filling. The device comprises an adjacent face tooth filling unit arranged on one side of teeth, and the adjacent face tooth filling unit comprises a forming piece, an injection hole and a clamping strip; the injection hole is formed in the molding sheet, and the high-flowability resin is injected into the teeth through the injection hole to fill the teeth; the clamping strip is arranged on one side of the forming piece, the forming piece is clamped between the clamping strip and the teeth, and the clamping strip is used for clamping and fixing the forming piece after the forming piece is installed. According to the device, the injection hole is formed in the forming piece, so that the requirement for the adjacent space is reduced during material filling, tooth filling is facilitated, through combined use of the clamping strip and the clamping strip, on the premise that sealing of the injection hole is guaranteed, the device can be more tightly attached to teeth, the stability of the clamping strip and the clamping strip during use is guaranteed, and the service life of the device is prolonged. The phenomenon that the tooth filling effect is affected due to leakage of the filling material is avoided, and user requirements are met.
Owner:DATONG MEIYUAN DENTAL HOSPITAL CO LTD

Large assembly part storage rotary table device, method and application

PendingCN121491972AWork tools storageGear wheelSurface tooth
The invention belongs to the technical field of automobile production equipment, and discloses a large assembly part storage rotary table device and method and application. The device comprises a pedestal, an internal tooth type rotary support, a movable gear, a speed reducer, a motor, a rotary table and a fixed frame, the pedestal is fixed on a foundation, the internal tooth type rotary support is coaxially arranged on the upper surface of the pedestal, the internal tooth type rotary support is arranged in the horizontal direction, the movable gear is arranged in the horizontal direction, and the speed reducer is arranged on the rotary table. The outer surface of the movable gear and the inner surface of the internal tooth type rotary support are installed in a gear meshing mode and arranged on the upper surface of the pedestal, and the movable gear can drive the internal tooth type rotary support to move synchronously. According to the rotary table, the motor is adopted for driving, speed reduction and torque increase are achieved through step-by-step transmission of the speed reducer, the movable gear and the inner tooth type rotary support, it is ensured that the rotary table can still rotate stably when bearing large assembly parts, equipment damage caused by insufficient torque is effectively prevented, the operation safety is improved, and the service life is prolonged.
Owner:TIANJIN CHANGRUNPENG TECH CO LTD

Medicine sealed storage tank

ActiveCN224449564USurface toothGear wheel
The utility model discloses a medicine sealed storage jar, including the jar body, the top of jar body is connected with the sealing cover with the thread, the bottom fixed sleeve of in the jar body is connected with the funnel tray, the bottom end center fixed connection of funnel tray one end of connecting pipe, the other end fixed connection of connecting pipe one side top of medicine outlet pipe, the other side end of medicine outlet pipe fixed connection jar body's bottom side wall, the spiral rod is rotatably installed in medicine outlet pipe, one end fixed connection of spiral rod has the gear, the gear rotation is established in jar body and the gear is located the bottom of funnel tray, the gear bottom meshing connection end surface tooth disc, the bottom fixed connection of end surface tooth disc top end rotates knob, the pivot rotation of rotating knob sleeve connection jar body's bottom and rotating knob rotation is established in jar body outside, one side of end surface tooth disc is movably equipped with knock component.
Owner:JIANGSU HUIZHEN PHARM CO LTD

extension set

The utility model provides a kind of inner wire machine, mainly with sewing body and rocker body, sewing body is equipped with upper shaft and cutter driving mechanism, and rocker body is equipped with cutter mechanism, in addition, cutter mechanism has movable cutter, ring gear, two cutter transmission rods, linkage bevel gear and cutter relay gear, ring gear is rotatably connected in the bearing seat of sewing body, and the peripheral tooth part of ring gear is engaged in cutter driving mechanism, in addition, two cutter transmission rods are connected with each other, one of cutter transmission rods is connected linkage bevel gear to engage in the end surface tooth part of ring gear, and another cutter transmission rod is connected cutter relay gear to be connected in movable cutter, whereby, the inner wire machine of the case is driven movable cutter by upper shaft, avoid the need for additional installation electric control device to drive movable cutter.
Owner:CHEE SIANG IND CO LTD +1

Master link end for master link assembly and related methods

PCT designated stageWO2026089848A1Endless track vehiclesSurface toothFacet
A master link end of a master link assembly (120) includes a length, a thickness, and a mating surface. The mating surface includes a first ramp (154), a second ramp, a third ramp (156), and a tooth (158) formed by and between the first ramp (154) and the second ramp. The mating surface may include a concave surface (160) between the second ramp (155) and the third ramp (156). The tooth (158) includes a convex crown (159) formed by a plurality of facets (162). Each facet (163) of the plurality of facets (162) shares a common edge with one or more facets (162) of the plurality of facets (162). The common edges define or approximately define an arc of a circle.
Owner:CATERPILLAR INC

Method for machining a cam in an unwinding machine

ActiveCN117600783BSurface toothWire cutting
The application discloses a processing method of a cam in an uncoiler, two cams are spliced together and blanked and forged, after once marking, rough machining, UT flaw detection, quenching and tempering treatment, semi-finish machining and twice marking, the workpiece is cut into two cams through wire cutting, and after stress relief, finish machining, clamp sequence, nitriding treatment and final inspection processes, the processing of the cam is completed. The method has the characteristics that the inclined surface tooth shapes of the two cams can be spliced together to form a cuboid forging material, the two cams are forged at the same time, the generation of waste material is reduced, the material utilization rate is improved, the machining efficiency is improved, and the processing cost of the cam is reduced.
Owner:MCC SFRE HEAVY IND EQUIP

Insulator, stator and electric motor

A stator includes an insulator, a core body having an annular shape and configured to be attached with the insulator, a plurality of teeth protruding along a radial direction from the core body, and a coil wound around the teeth via the insulator. Each tooth of the teeth protrudes radially inward from an inner peripheral surface of the core body and has an axial end surface facing toward an axial direction of the core body. The insulator includes: a tooth end surface covering part covering the axial end surface of the tooth, a tooth side surface covering part covering a circumferential side surface of the tooth, an outer wall part protruding from a radially outer end of the tooth end surface covering part, and an inner wall part protruding from a radially inner end of the tooth end surface covering part.
Owner:MITSUBA CORP

Device for preventing end face tooth transmission shaft from being crushed and pressing machine

ActiveCN223656414UMetal working apparatusSurface toothDrive shaft
The device comprises a floating guide sleeve of a T-shaped structure, a compression spring is arranged in the floating guide sleeve, an end face fluted disc is arranged on the inner side of the upper end of the floating guide sleeve in a sliding fit mode, and the lower end face of the end face fluted disc abuts against the compression spring. The upper end face of the end face fluted disc is provided with positioning teeth used for being matched with end face teeth of a workpiece to be machined, the upper end face of the floating guide sleeve is further provided with a positioning seat used for positioning the workpiece to be machined, the positioning seat is located on the outer ring of the end face fluted disc and fixedly installed on the floating guide sleeve through a bolt, and the inner side wall of the positioning seat is provided with a limiting step. The end face fluted disc is provided with a boss matched with the limiting step. The lower end face of the floating guide sleeve is provided with an installation hole used for being assembled to a pressing machine, and the side face of the floating guide sleeve is provided with a locking groove and a positioning clamping groove used for driving the floating guide sleeve to rotate. The device is simple in structure, end face teeth of parts are prevented from being crushed, and the product quality is improved.
Owner:GKN HUAYU DRIVELINE SYST (CHONGQING) CO LTD

Cycloidal tooth crowned shape modification method for eliminating speed reducer clearance and jittering

The invention provides a cycloidal gear crowned shape modification method for eliminating a speed reducer gap and jittering, which comprises the following steps of: S1, determining a target shape modification working surface of a cycloidal gear to be modified between a tooth root working starting point and a tooth crest working ending point; s2, standard tooth profile data and preset drum shape modification amount data of the target shape modification working face are obtained; s3, a combined drum shape modification function is constructed, wherein the combined drum shape modification function is used for describing a continuous and non-constant drum shape quantity change rule at different positions in the tooth height direction of the working face; and S4, according to the combined drum shape modification function, a numerical control machining instruction is generated so as to machine the target shape modification working face, and a shape modification tooth face with the combined drum shape characteristic is formed. Compared with the prior art, the combined drum shape modification method is adopted, so that the technical problems of large backlash, large rotation error, low transmission precision and poor whole machine rigidity caused by partial backlash easily generated in a traditional shape modification mode are solved.
Owner:ZHUHAI FEIMA HARDWARE ACCESSORY PARTS

Clamping jaw adjusting mechanism of electric wrench

PendingCN121821275ASpannersWrenchesSurface toothGear wheel
The invention provides an electric wrench clamping jaw adjusting mechanism, and belongs to the technical field of electric tools, the electric wrench clamping jaw adjusting mechanism comprises a main shell, and the front part of the main shell is provided with a notch; an opening type driving gear is arranged in the main shell, a sliding groove A is formed in the left side of an opening, and the sliding groove A is hollowed inwards from a tooth part on the left side face of the opening type driving gear to penetrate through the opening; a clamping jaw A is adjustably mounted in the sliding groove A, a rack clamping groove is vertically formed in the side face of the sliding groove A, and a rack is slidably arranged in the rack clamping groove; vertical teeth are arranged on the side face of the rack, vertical row teeth are arranged on the side face of the clamping jaw A, and the position of the clamping jaw A in the sliding groove A is adjusted by changing the meshing position of the teeth on the side face of the rack and the row teeth on the side face of the clamping jaw A; the problem that the position of the clamping jaw A of an existing open type electric wrench cannot be rapidly and conveniently adjusted is solved, the opening of the open type driving gear can be automatically aligned with the notch of the main shell, the clamping jaw B is dragged backwards, and the electric wrench can be directly taken down from a workpiece conveniently.
Owner:BEIBO INTELLIGENT TECH QINHUANGDAO CO LTD

Tooth rake trash remover with self-cleaning function

The utility model relates to the field of tooth harrow trash remover devices, and discloses a tooth harrow trash remover with a self-cleaning function, which comprises a shell, the rear side of the shell is fixedly connected with a fixed box, the top of the front end of the fixed box is detachably connected with a mounting plate, and the left side and the right side of the front end of the fixed box are connected with sliding rods in a sliding manner; inner cavities are formed in the two sides of the front end of the fixing box, clamping blocks are rotationally connected to the middles of the inner cavities, clamping assemblies are fixedly connected to the two sides of the rear end of the mounting plate, the interiors of the clamping assemblies are clamped with the other ends of the clamping blocks, and first springs and second springs are arranged in the inner cavities. According to the tooth rake cleaning device, cleaning of the tooth rake on the surface of the tooth rake cleaning belt is achieved, meanwhile, the mounting plate can be detached conveniently, and therefore the brush can be replaced and cleaned conveniently, attachments on the tooth rake can be further cleaned better, and use flexibility is improved.
Owner:JINXIANG JINQUAN SEWAGE TREATMENT CO LTD

Core piece, stator core, stator, and axial gap motor

This core piece, which is for a stator core of an axial gap motor and which is obtained by pressing a soft magnetic powder that is covered with an insulating material, comprises a tooth part, a first flange part, and a second flange part. The tooth part has a tooth part inside surface, a tooth part outside surface, a tooth part first side surface, and a tooth part second side surface. The tooth part first side surface has a tooth part inner first side surface that is connected to the tooth part inside surface, a tooth part outer first side surface that is connected to the tooth part outside surface, and a tooth part intermediate first side surface that is smoothly connected to the tooth part inner first side surface and the tooth part outer first side surface. The tooth part second side surface has a tooth part inner second side surface that is connected to the tooth part inside surface and that is parallel to the tooth part inner first side surface, a tooth part outer second side surface that is connected to the tooth part outside surface and that is parallel to the tooth part outer first side surface, and a tooth part intermediate second side surface that is smoothly connected to the tooth part inner second side surface and the tooth part outer second side surface.
Owner:RESONAC CORP

Flexible magnetic attraction locking structure

ActiveCN224225731UFlexible elementsBraceletsSurface toothBandage
The utility model discloses a flexible magnetic attraction position locking structure which comprises a main flexible magnetic attraction fixing band and an auxiliary flexible magnetic attraction fixing band, tooth-shaped structures are arranged on magnetic attraction faces of the main flexible magnetic attraction fixing band and the auxiliary flexible magnetic attraction fixing band, and the main flexible magnetic attraction fixing band and the auxiliary flexible magnetic attraction fixing band are stably fixed in a staggered buckling and magnetic attraction mode of tooth shapes of the magnetic attraction faces. Arc curved surface transition structures are arranged at the heads and the tails of the magnetic attraction faces of the main flexible magnetic attraction fixing band and the auxiliary flexible magnetic attraction fixing band, the situations that corners tilt up during magnetic attraction and the like are prevented, the magnetic attraction locking reliability is improved, meanwhile, stepless adjustment can be achieved between the main flexible magnetic attraction fixing band and the auxiliary flexible magnetic attraction fixing band, tangential magnetic attraction is reliable in the using process, and accidental separation is not prone to occurring. The structure aims at providing a connection mode which is firm and stable in position locking, and can be applied to the field of magnetic fixing bands, such as civil strapping bands, medical ribbons, magnetic watchbands and the like.
Owner:HANGZHOU QIANSHI TECH

Forming device for machining of mechanical parts

ActiveCN223465381UEjection devicesMolding machineSurface tooth
The utility model belongs to the technical field of machining of mechanical parts, and particularly relates to a forming device for machining of mechanical parts, a forming die is arranged at the top of a forming machine, and an ejection mechanism is arranged in the forming die; and the ejection mechanism comprises a round rod, a gear, a tooth piece, an electric telescopic rod, a movable block, a track groove, a sliding column, a connecting frame and an ejection plate, the round rod is fixedly connected to the bottom of the inner wall of the forming mold, the surface of the round rod is sleeved with the gear, the tooth piece is connected to the front side and the rear side of the gear in an engaged mode, and the electric telescopic rod is fixedly installed in the forming mold. According to the forming device for machining the mechanical parts, the formed parts in a mold can be ejected out under the cooperation of the ejection mechanism, workers can take the parts out of the mold conveniently, the possibility of mechanical stagnation and faults is reduced through the rapid and smooth demolding process, and the overall stability and reliability of machining of the mechanical parts are improved.
Owner:HUBEI YUSI MASCH MFG CO LTD

Coupling swivel plate and bogie

The application discloses a coupling rotary disc, which comprises a spline rotary part, a toothed rotary part, and an adjusting slip ring. The spline rotary part is in a cylindrical structure and has a first circular plate surface extending along a plane perpendicular to an axis of the spline rotary part. A spline is arranged on an outer circumferential surface of a first cylindrical part of the spline rotary part. The toothed rotary part is in a cylindrical structure and has a second circular plate surface extending along a plane perpendicular to an axis of the toothed rotary part. A second cylindrical part of the toothed rotary part is rotatably sleeved on the inside of the first cylindrical part of the spline rotary part. An end surface tooth is arranged on a side of the second circular plate surface of the toothed rotary part close to the first cylindrical part. The adjusting slip ring is detachably arranged on an outer circumferential surface of the second cylindrical part of the toothed rotary part and can slide along the spline. The spline rotary part and the toothed rotary part can be connected with the adjusting slip ring. A tooth groove matched with the end surface tooth is arranged on a side of the adjusting slip ring close to the toothed rotary part. The application further discloses a bogie comprising the coupling rotary disc. The coupling rotary disc can solve the problems of decoupling difficulty and incomplete decoupling of two half couplings.
Owner:ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD

A three-flank milling cutter with wedge clamping

PendingCN122274267AMilling cutterSurface tooth
This application belongs to the field of milling cutter technology and discloses a wedge-locked three-sided milling cutter, including a disc body and multiple seats fixed on the disc body. A first cutter and a second cutter are respectively arranged on both sides of the seats. A connecting mechanism is provided on the disc body, including a moving component. The first cutter and the second cutter engage with the tooth grooves of the seats on their surfaces via surface teeth. Then, a locking component locks the first cutter and the second cutter. During adjustment, the adjusting component first loosens the locking component, and then the adjusting component can drive the seats to move in the opposite direction to adjust the overall machining width, adapting to machining requirements of various widths. Compared with the cumbersome process of adjusting the position of each cutter individually using traditional methods, this significantly improves adjustment efficiency and ensures the consistency of the adjustment positions of each set of first cutters and second cutters, effectively reducing deviations caused by individual adjustments and further improving the uniformity and accuracy of machining dimensions.
Owner:杭州超尔切削工具有限公司

Sintered material, sizing device, and method for manufacturing sintered material

PendingUS20260070123A1Additive manufacturing apparatusSurface toothTooth surface
A cylindrical sintered material made of metal, in which one of an inner peripheral surface and an outer peripheral surface of the sintered material includes: a plurality of helical teeth arranged in parallel along a circumferential direction of the sintered material; and a sizing mark provided on at least a part of a tooth bottom surface, a tooth surface, and a tooth tip surface of each of the helical teeth, the helical tooth has a tooth profile error less than or equal to 6 μm, and the helical tooth has a tooth trace error less than or equal to 27 μm.
Owner:SUMITOMO ELECTRIC SINTERED ALLOY LTD

Ash removal device of quench tower

ActiveCN223623478URotary device cleaningSurface toothGear wheel
The utility model discloses an ash cleaning device of a quench tower, which belongs to the technical field of quench towers, and comprises a cleaning mechanism arranged in a tower body, the cleaning mechanism comprises two brush plates, a dust removal mechanism arranged in the tower body, a dust removal mechanism arranged in the tower body, a dust removal mechanism arranged in the tower body, a dust removal mechanism arranged in the tower body, and a dust removal mechanism arranged in the tower body, the gear ring is arranged on the upper surface of the brush plate; the outer surface of the gear is meshed with the inner side of the gear ring; by arranging the cleaning mechanism, the problems that ash on the inner wall of the quench tower is not cleaned in time, normal operation of the quench tower is affected by accumulated ash, cooling efficiency of the quench tower is reduced, even blockage is possibly caused, and stability of the whole system is affected are solved.
Owner:JIANGSU LANGYU ENVIRONMENTAL PROTECTION EQUIP CO LTD

Adjustable crank arm based on high-voltage isolation switch operating mechanism

The utility model relates to the field of power equipment, and discloses an adjustable crank arm based on a high-voltage isolating switch operating mechanism, which comprises a crank arm body, a fixing sleeve, an adjusting disc, a spring, a fixing screw and a locking nut, one end of the fixing sleeve is provided with a limiting jack, and the other end of the fixing sleeve is provided with a first end face gear ring; a second end face gear ring meshed with the first end face gear ring is arranged on one side of the adjusting disc, a connecting column is arranged on the other side of the adjusting disc, and a center hole is formed in the connecting column. The spring is arranged between the first end face gear ring and the second end face gear ring; the fixing screw penetrates through a center hole of the connecting column and the spring and then is in threaded connection with the fixing sleeve. The crank arm body is provided with a mounting hole matched with the connecting column, and the crank arm body is in threaded connection with the connecting column through a locking nut and is fixed to the adjusting disc. The angle of the crank arm can be freely adjusted, and the mounting structure of the crank arm is stable and reliable.
Owner:ZHIJIANG MANGTANG WATER CONSERVANCY & HYDROPOWER DEV CO LTD

A new type of double universal joint fatigue static torsion test tool

The utility model discloses a novel duplex universal joint fatigue static torsion test frock, including connecting disc and spline cover, the connecting disc one end surface is provided with end surface tooth, and one end center is provided with connecting hole, the spline cover center is provided with spline hole, the spline cover is inserted in the connecting hole and the spline cover outer surface is cooperated with the connecting hole inner surface and can transmit the torque. The utility model discloses a connecting disc and spline cover split type design, and the test machine connecting disc is connected with the connecting disc and is the end surface tooth of fixed size, and the connecting disc is connected with the spline cover and is the size and shape of fixed, needs the duplex universal joint of different diameter and size, only needs the spline cover with different specifications spline hole to replace to process, and the spline cover appearance is fixed shape, and only processing spline hole is relatively simple, and only replaces the spline cover and saves the material relatively.
Owner:XIAN SANMING AUTO PARTS

Large-pitch deep-tooth reticulate pattern middle and lower roller

The utility model belongs to the field of spinning frame rollers, and particularly relates to a large-pitch deep-tooth reticulate pattern middle-lower roller which is arranged in a spinning frame, a plurality of diamond reticulate patterns which are tightly arranged are arranged on the middle-lower roller, the pitch t of the reticulate pattern tooth form of the working face of the middle-lower roller is 1.45-1.50 mm, the tooth form angle beta is 90-100 degrees, the tooth top width b is 0.35-0.47 mm, the tooth depth h is 0.40-0.45 mm, and the reticulate pattern prismatic angle alpha is 41 degrees. According to the utility model, a deep-tooth large-pitch large rhombic reticulate pattern working surface tooth shape, tooth bottom and tooth side are matched with the lower leather ring, so that the friction force is increased, the problem of insufficient yarn drafting force caused by insufficient holding force of a middle and lower roller jaw of a spinning frame is solved, the relative count error of yarns is reduced, and the quality of resultant yarns is improved.
Owner:JINGWEI INTELLIGENT TEXTILE MACHINERY CO LTD

Bicycle chainring and bicycle drivetrain

A bicycle chainring (SP1 to SP12), comprising: a sprocket body (SP1A to SP12A) with a first axially oriented surface (SP1A1) and a second axially oriented surface (SP1A2) which are aligned in the axial direction (D2) with respect to a rotational center axis (A1) of the bicycle sprocket (SP1 to SP12), wherein the second axially oriented surface (SP1A2) is provided in the axial direction (D2) on a rear side of the first axially oriented surface (SP1A1), wherein the first axially oriented surface (SP1A1) is configured to point in a mounted state in which the bicycle sprocket (SP1 to SP12) is mounted on a bicycle (10) in the direction of a median plane (10A) of the bicycle (10); a plurality of sprocket teeth (SP1B to SP12B) extending radially outwards from the sprocket body (SP1A to SP12A) with respect to the axis of rotation (A1); at least one upshift facilitation area (FU1 to FU12) configured to facilitate the transfer of a bicycle chain (C) from the bicycle sprocket (SP1 to SP12) to a smaller bicycle sprocket (SP1 to SP11) located axially (D2) adjacent to the bicycle sprocket (SP1 to SP12) without another bicycle sprocket in between; wherein the plurality of sprocket teeth (SP1B to SP12B) includes at least one axially recessed, upshifting initiation tooth (SP1U to SP12U) which is axially recessed with respect to the rotational center axis (A1); wherein the at least one axially recessed upshift initiation tooth (SP1U to SP12U) is arranged and configured in the at least one upshift facilitation area (FU1 to FU12) to release an inner connecting link (C1) of the bicycle chain (C) from the at least one axially recessed upshift initiation tooth (SP1U to SP12U) during an upshift operation in which the bicycle chain (C) changes from the main chainring (SP1 to SP12) to the smaller bicycle chainring (SP1 to SP11); wherein the at least one axially recessed upshift initiation tooth (SP1U to SP12U) has a driving surface (SP1U1), a non-driving surface (SP1U2) and a tooth tip section (SP1U3); wherein the driving surface (SP1U1) includes a driving surface-side tooth tip end (E11); wherein the non-driving surface (SP1U2) includes a non-driving surface tooth tip end (E12); the tooth tip section (SP1U3) connects the driving surface side tooth tip end (E11) and the non-driving surface side tooth tip end (E12); the non-driving surface (SP1U2) which extends from the non-driving surface tooth tip end (E12) in a circumferential direction (D1) with respect to the rotation center axis (A1); the non-riding surface (SP1U2) has a non-riding surface projection (SP1U4) which is arranged radially inside the non-riding surface tooth tip end (E12) with respect to the axis of rotation (A1); and wherein the non-riding surface projection (SP1U4) has a projection tip (SP1U5) which is located in the axial direction (D2) closer to the second axially oriented surface (SP1A2) than the non-riding surface tooth tip end (E12), so that a guide chamfer (SP1U6) extends from the projection tip (SP1U5) to the first axially oriented surface (SP1A1).
Owner:SHIMANO INC