JP2016186345A - Conical roller bearing and assembly method of conical roller bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conical roller bearing and an assembly method thereof capable of assembling the conical roller bearing without bottom expansion and additional tightening of a retainer, moreover being capable of improving the retainer accuracy, preventing occurrence of seizing marks on rollers, and reducing the assembly cycle time and cost.SOLUTION: On an external diameter surface of a small flange, conical rollers are provided at equal intervals in a circumferential direction while cutout parts are provided at equal intervals in the same circumferential direction. In a state in which the distribution phase of the conical rollers matches the distribution phase of the cutout parts, the conical rollers can be installed on an inner ring with the cutout parts along a bearing shaft direction therebetween. The conical rollers after the installation move on the small-diameter end side so as to be engaged with the small flange, or move on the large-diameter end side so as to be engaged with a large flange, by the self-weight.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a tapered roller bearing and a method for assembling a tapered roller bearing.

  As shown in FIG. 9, the tapered roller bearing generally has an inner ring 2 having a conical raceway surface 1 on an outer peripheral surface, an outer ring 4 having a conical raceway surface 3 on an inner peripheral surface, and a raceway of the inner ring 2. Mainly includes a plurality of tapered rollers 5 interposed between the surface 1 and the raceway surface 3 of the outer ring 4 so as to freely roll, and a retainer 6 that holds the plurality of tapered rollers 5 at a predetermined interval in the bearing circumferential direction. As a component. The inner ring 2 has a small brim 8 on the small diameter side of the raceway surface 1 and a large brim 7 on the large diameter side. That is, a thrust load is received by the large brim 7 and the tapered roller is prevented from falling off by the small brim 8.

  The cage 6 has a plurality of column portions 11 between the small-diameter ring portion 9 and the large-diameter ring portion 10, and a pocket 12 that holds the tapered roller 5 between the column portions 11 is formed. . The tapered roller 5 is disposed in the pocket 12.

  Here, as shown in FIG. 9, in the conventionally known tapered roller bearing, since the small collar 8 is integrally provided with the inner ring 2, the tapered roller 5 held by the cage 6 is provided. When the tapered roller bearing to be assembled to the outside of the inner ring 2 is assembled, the tapered roller 5 interferes with the small collar 8 and cannot be assembled as it is.

  Therefore, conventionally, after the so-called bottom expansion, in which the small diameter end side of the cage 6 is expanded, the tapered roller 5 held by the cage 6 is assembled to the outside of the inner ring 2, and the tapered roller is assembled. After assembling the tapered roller 5 through which the 5 passes the small brim 8, caulking is performed to reduce the diameter of the expanded portion of the cage 6 using a jig so that the original state is restored.

  That is, in the tapered roller bearing, the inner ring 2, the tapered roller 5, and the cage 6 are assembled to form an inner ring assembly. Therefore, the inner diameter of the small diameter side of the column, called “bottom expansion”, is expanded radially outward. In this state, the tapered roller 5 held by the cage 6 is assembled to the inner ring 2. When the cage 6 is “bottom-opened”, the tapered roller 5 may be broken. For this reason, plastic working (caulking) for returning the expanded diameter of the pillar of the cage 6 is performed.

  However, in assembling the tapered roller bearing as described above, if the bottom of the cage 6 is expanded or crimped, the shape of the cage 6 is collapsed when the diameter is reduced, and the dimensional accuracy and strength are reduced. Due to the decrease in accuracy, the tapered roller is skewed during the rotation of the bearing, and a large load is applied to the cage 6 and the cage 6 may be damaged. In addition, the tapered roller 5 may fall off due to insufficient caulking of the cage 6 or forgetting to caulk. In other words, it is difficult to ensure stable accuracy of the cage due to processing accompanied by plastic deformation of the cage, and a caulking process is required, resulting in high costs.

  Therefore, conventionally, a structure in which a small brim is formed by a member different from the inner ring has been proposed (Patent Document 1 and Patent Document 2). Thus, by configuring the small brim with a separate member, the tapered roller held by the cage can be assembled from the small diameter side of the inner ring, and after this assembly, the small brim of the separate member is attached. be able to.

Japanese Patent Laid-Open No. 9-210069 JP 2005-69350 A

  For this reason, in patent document 1 and patent document 2, a tapered roller bearing can be assembled without performing the bottom expansion of a cage and a caulking process, and it has composition which can aim at improvement of cage accuracy.

  However, as shown in Patent Document 1 and Patent Document 2, when the small brim is formed of a separate member, the number of parts increases and a process of attaching the small brim of the separate member is required. For this reason, the cost is increased and the assembling workability is inferior.

  If the cage is made of resin, the cage can be assembled using the elastic deformation action of the cage without performing the bottom expansion of the cage or the caulking process. However, when elastically deforming, if it is greatly deformed, the cage may be damaged beyond the elastic limit.

  For this reason, in the case of the resin cage, if the deformation amount is minimized, the small diameter side of the tapered roller is brought into sliding contact (sliding) with the small collar of the inner ring when assembled. Thus, if the small diameter side of the tapered roller is in sliding contact with the small brim, there is a possibility that wrinkles may occur on the roller. If wrinkles are formed on the rollers, smooth rolling will be hindered.

  In view of the above-mentioned problems, the present invention can assemble a tapered roller bearing without expanding or tightening the bottom of the cage, and can improve the accuracy of the cage and prevent the roller from being tacked. Provided are a tapered roller bearing and a tapered roller assembling method capable of reducing time and cost.

  The tapered roller bearing according to the present invention includes an inner ring having a raceway surface on an outer diameter surface, an outer ring having a raceway surface on an inner diameter surface, a plurality of tapered rollers arranged to roll between the inner ring and the outer ring, and a tapered shape. A retainer for holding the tapered rollers in pockets arranged at equal intervals in the circumferential direction, and a large brim is formed on the large diameter end side of the raceway surface of the inner ring, and the small diameter end side of the raceway surface A tapered roller bearing in which a small brim is formed, and a cutout portion is provided on the outer diameter surface of the small brim at equal circumferential intervals equal to the circumferential interval of the tapered rollers. It is possible to install the tapered roller into the inner ring via the notch along the bearing axial direction in the state where the phase of the notch is aligned, and the tapered roller after installation is the small diameter end with its own weight. Move to the side and engage with the small collar or move to the large diameter end and engage with the large collar It become one.

  According to the tapered roller bearing of the present invention, it is possible to incorporate the tapered roller into the inner ring in a state where the arrangement phase of the tapered roller coincides with the arrangement phase of the notch. After the assembly, the tapered roller is engaged with the small collar or the large collar by its own weight, so that the roller can be prevented from falling off. For this reason, it is not necessary to perform bottom expansion or caulking of the cage.

  It is preferable to set the bottom diameter of the notch portion of the small collar smaller than the roller inscribed minimum circular diameter in a state where the large end face is in contact with the large diameter side end face of the pocket by pushing up along the raceway surface of the tapered roller. By setting in this way, the roller can be assembled without being brought into contact with the collar when the roller is assembled by being held by the cage.

  The bottom cross section of the notch portion of the small collar is an arc surface, and the diameter of the arc surface is preferably set larger than the small end surface diameter of the tapered roller. By setting in this way, the roller assembling work becomes more stable.

  The cage may be made of iron plate or resin. That is, since it is not necessary to expand or crimp the cage, it is not necessary to deform the cage by applying an external force, and the cage can be made of iron plate or resin.

  The method of assembling a tapered roller bearing according to the present invention includes an inner ring having a raceway surface on an outer diameter surface, an outer ring having a raceway surface on an inner diameter surface, and a plurality of tapered rollers arranged so as to be able to roll between the inner ring and the outer ring. And a cage for holding the tapered rollers in pockets arranged at equal intervals in the circumferential direction, and a large brim is formed on the large diameter end side of the raceway surface of the inner ring. A method for assembling a tapered roller bearing in which a small brim is formed on the small diameter end side, the outer diameter surface of the small brim being provided with notches at the same circumferential direction equal intervals in the circumferential direction of the tapered rollers. The tapered roller is inserted into each pocket of the cage so that the small diameter side of the cage faces downward, and while maintaining this posture, the tapered roller is abutted against the large diameter side end surface of the cage pocket. The bottom diameter of the notch of the small collar is smaller than the roller inscribed minimum circle diameter. Next, in a state where the arrangement phase of the tapered roller and the arrangement phase of the notch are matched, the inner ring is pushed down along its axis, and the tapered roller is incorporated into the inner ring via the notch. .

  According to the method for assembling the tapered roller bearing of the present invention, first, a tapered roller is inserted into each pocket of the cage so that the small diameter side of the cage faces downward. While maintaining this posture, the tapered roller has its large end face abutted against the large diameter end face of the cage pocket. As a result, the bottom diameter of the notch portion of the small collar can be made smaller than the roller inscribed minimum circular diameter. Then, the inner ring is pushed down along the axial center thereof in a state where the arrangement phase of the tapered rollers coincides with the arrangement phase of the notch. Thereby, the tapered roller can be incorporated into the inner ring.

  After the tapered roller is incorporated into the inner ring, it is preferable that at least one of the roller and the inner ring held by the cage is rotated so that the arrangement phase of the tapered roller and the arrangement phase of the notch are shifted. Thus, if it rotates, each tapered roller will be in the state corresponding to the notch part, and the fall prevention function of a tapered roller will be stabilized.

  In the present invention, it is not necessary to expand or crimp the cage. For this reason, accuracy deterioration due to plastic deformation can be avoided with respect to the cage, stable accuracy of the cage can be ensured, and a high-quality product (tapered roller bearing) can be provided. In addition, the work process to be incorporated can be simplified (reduction in assembly cycle time), and the cost can be reduced.

  Further, even if the cage is made of resin, it is not necessary to be elastically deformed when assembled, and it is possible to avoid the rollers from being assembled while rubbing against the small brim, and to prevent the rollers from being brazed. For this reason, smooth rolling can be maintained over a long period of time.

It is sectional drawing which shows embodiment of the tapered roller bearing of this invention. FIG. 2 is an explanatory diagram showing a relationship between a small collar of an inner ring and a tapered roller of the tapered roller bearing shown in FIG. 1 in a state in which a tapered roller arrangement phase and a cutout portion arrangement phase coincide with each other. It is explanatory drawing which shows the notch part of the small collar of the inner ring | wheel of the said tapered roller bearing. It is explanatory drawing of the state in which the arrangement | positioning phase of a tapered roller and the arrangement | positioning phase of a notch part do not correspond. It is sectional drawing of the state which shows the relationship between a holder | retainer and a tapered roller, and the large end surface of the tapered roller is in contact with the large diameter side end surface of the pocket. It is an enlarged view of the corner part between the small end surface and outer-diameter surface of a tapered roller. It is sectional drawing which shows the relationship between the holder | retainer place of a roller incorporation state, and an inner ring | wheel. It is principal part sectional drawing explaining the tapered roller assembly method of this invention. It is sectional drawing of the conventional tapered roller bearing.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. The tapered roller bearing includes an inner ring 23 having a raceway surface 22 on an outer diameter surface 21, an outer ring 26 having a raceway surface 25 on an inner diameter surface 24, and a plurality of rollable rollers disposed between the inner ring 23 and the outer ring 26. A tapered roller 27 and a cage 28 that holds the tapered roller 27 at a predetermined circumferential interval are provided. The cage 28 includes a large-diameter-side annular portion 31, a small-diameter-side annular portion 30, and a column portion 32 that connects the large-diameter-side annular portion 31 and the small-diameter-side annular portion 30. A pocket 33 into which the tapered roller 27 is fitted is formed by the small diameter side annular portion 30 and the column portion 32.

  In this case, as shown in FIG. 2, a plurality of pockets 33 are arranged at equal intervals in the circumferential direction. For this reason, the tapered rollers 27 held in the pocket 33 are arranged at equal intervals in the circumferential direction. The retainer 28 is a punched iron plate retainer. In this case, the material of the cage 28 may be a cold or hot rolled steel plate, an austenitic stainless steel plate, or the like. Further, a machined cage in which carbon steel for machine structure or high strength brass casting is used may be used.

  As shown in FIG. 1, the inner ring 23 has a small collar 35 on the small diameter side of the raceway surface 22 and a large collar 36 on the large diameter side. Further, the corner portions between the small brim 35 and the raceway surface 22 and the corner portions between the large brim 36 and the raceway surface 22 are provided with thin portions 37 and 38, respectively.

  By receiving the small end surface 27a of the tapered roller 27 at the inner surface 35a of the small brim 35, the tapered roller 27 is prevented from coming off, and by receiving the large end surface 27b of the tapered roller 27 at the inner surface 36a of the large collar 36, this An axial load applied to the tapered roller 27 can be received. Therefore, the inner surface 35a of the small brim 35 is an inclined surface inclined at the same angle as the inclination angle of the small end surface 27a in the roller built-in state, and the inner surface 36a of the large brim 36 is inclined to the large end surface 27b in the roller built-in state. The inclined surface is inclined at the same angle as the angle.

  In this case, as shown in FIGS. 2 to 3, notches 41 are formed on the outer diameter surface 40 of the small brim 35 at equal intervals in the circumferential direction. And the circumferential equal intervals of the tapered rollers 27 and the circumferential equal intervals of the notches 41 are set to be the same. That is, on the outer diameter surface 40 of the small brim 35, the cutout portion 41 is formed at a portion where the small brim 35 and the tapered roller 27 project and interfere with each other when viewed from the axial small brim side on the arrangement of the rollers and the like. The The notch 41 can be molded in a forged die shape. Also, machining with NC machining control is possible with a turning tool. For this reason, this notch 41 can also be processed without adding a special process in the conventional inner ring manufacturing process.

  In this case, as shown in FIG. 7, the bottom diameter of the notch 41 of the small brim 35 is set to the minimum inscribed roller in a state in which the tapered roller 27 is pushed up and its large end surface 27b is in contact with the large diameter side end surface 33b of the pocket 33. Set smaller than the circle diameter. That is, when the bottom diameter of the notch 41 is SLI and the roller inscribed minimum circular diameter is SDRL, SLI <SDRL. In FIG. 7, SDI indicates the outer diameter of the outer diameter surface 40 of the small brim 35.

  The bottom cross section of the notch 41 of the small brim 35 is an arc surface, and the diameter of the arc surface is set larger than the small end surface diameter of the tapered roller 27. That is, when the diameter of the circular arc surface of the notch 41 is DW2B (see FIG. 3) and the small end surface diameter of the tapered roller 27 is DW2 (see FIG. 2), DW2B> DW2.

  In this tapered roller bearing, as described later, the inscribed minimum circular diameter SDRL needs to exceed the bottom diameter SLI of the notch 41 when the tapered roller 27 held by the cage 28 is assembled. However, the inscribed minimum circle diameter for quality control of the cage has manufacturing variations. Therefore, in consideration of this variation, as shown in FIGS. 5 and 6, the inscribed minimum circular diameter is set to that of the model roller 27A. That is, there is a chamfer 45 on the small end face side of the tapered roller 27, and a normal inscribed minimum circular diameter is a circular diameter SDRL at an end edge 45a of the chamfer 45 on the outer diameter face 27c side. Is the circle diameter SDRL1 of the corner 46 between the small end surface 27a and the outer diameter surface 27c when the chamfer 45 is not formed.

  Next, a method for assembling the tapered roller bearing shown in FIG. 1 will be described. First, as shown in FIG. 8, the tapered roller 27 is inserted into each pocket 33 of the cage 28 with the small diameter side of the cage 28 facing downward. In this case, a jig 50 as shown in FIG. 8 is used. This jig 50 is formed of a bottomed flat cylindrical body, and has a trunk portion 50a made of a short cylindrical body, and a bottom wall portion 50b that closes a lower opening of the trunk portion 50a.

  An upper end edge of the body portion 50a of the jig 50 is a tapered surface 51 inclined downward from the inner diameter side toward the outer diameter side. As shown in FIG. 8, the inclination angle of the taper surface 51 is substantially orthogonal to the track surface 22 in a state where the small diameter side of the inner ring 23 is disposed downward (a state coincident with the axis of the jig 50). An angle. Further, the inner diameter dimension of the body portion 50 a of the jig 50 is set larger than the outer diameter dimension of the small collar 35 of the inner ring 23. That is, D> SDI, where D is the inner diameter of the body 50a and SDI is the outer diameter of the small brim 35.

  Then, the large end surface 27 b of the tapered roller 27 is brought into contact with the large diameter side end surface 33 b of the pocket 33. In this state, the inner ring 23 in a state where the small-diameter side is disposed downward (a state coincident with the axis of the jig 50) is lowered. At this time, the circumferential equal intervals of the tapered rollers 27 and the circumferential equal intervals of the notches 41 of the inner ring 23 are matched. For this reason, in this state, since the bottom diameter of the notch 41 of the small collar 35 is smaller than the roller inscribed minimum circular diameter, the inner ring 23 enters the jig 50 of the small collar 35. At the time of this intrusion, the small diameter corner portion on the inner diameter side of each tapered roller 27 passes through the notch portion 41 of the small collar 35 and exceeds the small collar 35 so that the roller corresponds to the raceway surface 22 of the inner ring 23. Become.

  Thereafter, the inner ring 23 is rotated (rotated) about its axis, and the arrangement phase of the tapered rollers 27 and the arrangement phase of the notches 41 are shifted as shown in FIG. Thus, the inner ring assembly M can be configured by assembling the inner ring 23, the tapered roller 27, and the cage 28. Thereafter, when this inner ring assembly M is assembled to the outer ring 26, a tapered roller bearing can be constructed (assembled).

  By the way, if the assembled inner ring assembly M is set to a horizontal state as shown in FIG. 1, the tapered roller 27 located on the upper side is only the pocket radial direction clearance CL (see FIG. 7). It descends by its own weight, and the outer diameter surface 27 c comes into contact with the raceway surface 22 and the small end surface 27 a comes into contact with the small diameter side end surface 33 a of the pocket 33 of the cage 28. At this time, the small end surface 27 a of the tapered roller 27 comes into contact with (is caught by) the inner surface 35 a of the small collar 35.

  That is, as shown in FIG. 1, in the state where the outer diameter surface 27c contacts the raceway surface 22 and the small end surface 27a contacts the small diameter side end surface 33a of the pocket 33 of the retainer 28, the chamfer 45 of the tapered roller 27 is formed. The circular diameter of the edge 45b on the small end surface 27a side is smaller than the bottom diameter of the notch 41 of the small brim 35. For this reason, even if the arrangement phase of the tapered roller 27 and the arrangement phase of the notch portion 41 coincide with each other, the small end surface 27a of the tapered roller 27 abuts (hooks) on the inner surface 35a of the small collar 35. Become. A dimension L in FIG. 1 indicates the amount of catch. That is, when the diameter of the edge 45b on the small end surface 27a side of the chamfer 45 of the tapered roller 27 is SDRL2, SDRL2 <SLI and SLI-SLRL2 = L.

  In this state, even if the arrangement phase of the tapered roller 27 coincides with the arrangement phase of the notch 41, the withdrawal of the tapered roller 27 is restricted. That is, in this state, the tapered rollers 27 do not fall off unless the phase is intentionally adjusted and the inner ring 23 is moved in the axial direction. In other words, in the state where the inner ring assembly (inner ring assembly) M is configured, the tapered roller 27 does not fall off unless the inner ring or the like is intentionally operated, and the range of the normal handling operation with respect to the inner ring assembly M is “separate”. Don't worry.

  Further, the tapered roller 27 located on the lower side is in a state in which the outer diameter surface 27c is separated from the raceway surface 22 or maintains the pocket radial direction clearance CL by its own weight, and the large end surface of the tapered roller 27 is also provided. 27 b comes into contact with the large-diameter side end surface 33 b of the pocket 33 and the inner surface 36 a of the large brim 36. For this reason, the withdrawal of the tapered roller 27 located on the lower side is restricted.

  In the present invention, it is not necessary to expand or crimp the cage 28. For this reason, accuracy deterioration due to plastic deformation can be avoided with respect to the cage 28, stable accuracy of the cage 28 can be ensured, and a high-quality product (tapered roller bearing) can be provided. In addition, the work process to be incorporated can be simplified (reduction in assembly cycle time), and the cost can be reduced.

  The bottom diameter of the notch 41 of the small brim 35 is pushed up along the raceway surface of the tapered roller 27 and smaller than the roller inscribed minimum circular diameter in a state where the large end surface 27b is in contact with the large diameter side end surface 33b of the pocket 33. Therefore, when the tapered roller 27 is assembled by being held by the retainer 28, it can be assembled without contacting the small collar 35.

  The bottom cross section of the notch 41 of the small brim 35 is an arc surface, and the diameter of this arc surface is set larger than the small end surface diameter of the tapered roller, so that the assembling work of the tapered roller 27 becomes more stable.

  By the way, in the said embodiment, although it was the punching iron plate holder | retainer as the holder | retainer 28, a resin holder may be sufficient. Even if the cage is made of resin, it is not necessary to be elastically deformed when assembled, and it is possible to prevent the tapered roller 27 from being assembled while rubbing against the small brim and to prevent the tapered roller 27 from being brazed. For this reason, smooth rolling can be maintained over a long period of time. As the resin holder, for example, a polyamide resin reinforced with glass fiber can be used. That is, the cage in the present invention can be configured using a conventionally used metal material or resin material.

  As described above, the embodiment of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications are possible. The number of pockets 33 of the retainer 28 is the number of the tapered rollers 27 to be retained. Various changes can be made according to the number. Further, the length and thickness of the column part 32 can be variously changed as long as the tapered roller 27 can be held. The tapered roller bearing of the present invention can be used in a power transmission system such as a differential or a transmission, and can also be used for other purposes, for example, for supporting a spindle of a machine tool.

21 outer diameter surface 22 raceway surface 23 inner ring 24 inner diameter surface 25 raceway surface 26 outer ring 27a small end surface 27b large end surface 28 cage 33 pocket 33a small diameter side end surface 33b large diameter side end surface 35 small brim 36 large brim 40 outer diameter surface 41 notch

Claims (6)

An inner ring having a raceway surface on the outer diameter surface, an outer ring having a raceway surface on the inner diameter surface, a plurality of tapered rollers arranged to roll between the inner ring and the outer ring, and the tapered rollers at equal intervals in the circumferential direction. And a retainer for holding the tapered rollers in the disposed pocket, and a cone having a large brim formed on the large diameter end side of the raceway surface of the inner ring and a small brim formed on the small diameter end side of the raceway surface. A roller bearing,
In the outer diameter surface of the small collar, a notch portion is provided at the same circumferential direction equal interval in the circumferential direction of the tapered roller, and the arrangement phase of the tapered roller coincides with the arrangement phase of the notch portion, The tapered roller can be incorporated into the inner ring through a notch along the bearing axial direction, and the tapered roller after assembly moves to the small diameter end side by its own weight and engages with the small collar. A tapered roller bearing which moves to the end side and engages with a large collar.   The bottom diameter of the notch part of the small collar is pushed up along the raceway surface of the tapered roller and is set smaller than the roller inscribed minimum circle diameter in the state where the large end surface is in contact with the large diameter side end surface of the pocket. The tapered roller bearing according to claim 1.   The tapered roller bearing according to claim 1 or 2, wherein the bottom cross section of the notch portion of the small collar is an arc surface, and the diameter of the arc surface is set larger than the small end surface diameter of the tapered roller. .   The tapered roller bearing according to any one of claims 1 to 3, wherein the cage is made of iron plate or resin. An inner ring having a raceway surface on the outer diameter surface, an outer ring having a raceway surface on the inner diameter surface, a plurality of tapered rollers arranged to roll between the inner ring and the outer ring, and the tapered rollers at equal intervals in the circumferential direction. And a retainer for holding the tapered rollers in the disposed pocket, and a cone having a large brim formed on the large diameter end side of the raceway surface of the inner ring and a small brim formed on the small diameter end side of the raceway surface. A method for assembling a roller bearing,
The outer diameter surface of the small brim is provided with notches at the same circumferential direction equal intervals in the circumferential direction of the tapered rollers, the tapered rollers are inserted into the pockets of the cage, and the small diameter side of the cage is downward While maintaining this posture, the tapered roller is brought into contact with the large-diameter side end surface of the cage pocket so that the bottom diameter of the notch portion of the small collar is smaller than the roller inscribed minimum circular diameter. Next, with the tapered roller arrangement phase and the notch portion arrangement phase matched, push the inner ring down along its axis to incorporate the tapered roller into the inner ring through the notch portion. A method of assembling a tapered roller bearing.   After the tapered roller is incorporated into the inner ring, at least one of the roller held by the cage and the inner ring is rotated so that the arrangement phase of the tapered roller and the arrangement phase of the notch are shifted. A method for assembling a tapered roller bearing according to claim 5.

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