JP2004316703A - Carrier box for hub bearing with brake rotor - Google Patents

Abstract

An object of the present invention is to increase the number of man-hours in an automobile assembly factory and to secure skilled personnel by adjusting the phase adjustment of the running of a brake surface in a state where a hub bearing and a brake rotor attached thereto are combined in an automobile assembly factory. It is difficult for the bearing manufacturer to make this adjustment and ship it.However, if this is fitted into the storage recess of the packing box at the time of shipment, it is heavy and difficult to grasp when unpacking at an automobile assembly factory. Problems arise.
When a hub bearing (32) to which a brake rotor (12) is fixed is fitted into and conveyed into a storage recess formed on the surface of a transfer box (13), gripping grooves (37) are provided on the outer periphery of the storage recess so as to face each other. . When removing the hub bearing 32 with the brake rotor, a finger is inserted into the gripping gap 42 formed on the lower surface of the ring-shaped outer peripheral portion 24 of the brake rotor 12 from the finger insertion port 41 of the gripping groove 37 and lifted, so that the transport box 13 is lifted. , The hub bearing with brake rotor can be easily and safely taken out.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a hub bearing for rotatably supporting a wheel of an automobile with respect to a vehicle body, wherein a brake rotor is also incorporated as a sub-assembly into the hub bearing, and is used for being housed integrally in a transport box and shipped to an automobile assembly factory. The present invention relates to a transport box for a hub bearing with a brake rotor.
[0002]
[Prior art]
Various types of hub bearings are used for rotatably supporting the wheels of the automobile with respect to the vehicle body. For example, a hub bearing 51 as shown in FIG. The brake rotor 53 and the wheel 54 are rotatably supported. In a hub bearing 51 shown in FIG. 4, a flange 56 formed on the outer periphery of an outer ring 55 is fixed to a knuckle 52 with a bolt 57, and a brake rotor is pressed against a hub bolt 61 press-fitted into a hole of a flange 60 formed on a hub wheel 58. In a state where the flange 62 of 53 and the wheel 54 are fitted, the nut 62 is tightened and fixed. Further, in the hub bearing 51 shown in the same figure, a shaft 65 protruding from the constant velocity joint 64 is inserted into a shaft insertion hole of the hub wheel 58, and spline-bonded at that portion, and a nut is attached to the end of the shaft 65. 66 are screwed and fixed.
[0003]
FIG. 5A shows only the portion of the conventional hub bearing 51 taken out as described above. As shown in FIG. 5A, in the hub bearing 51, the outer ring 55 having a flange 56 formed on the outer periphery is shown. The raceway surfaces of the two rows of rolling elements 67 are formed directly on the inner circumference, and the row of raceways is formed on the outer circumference at the axial center of the hub wheel 58 having the flange 60 formed on the outer circumference. The inner ring 68 having the surface formed is pressed into the outer peripheral surface of the hub wheel 58, and the hub bearing 51 is configured in a state where the rolling elements 67 are interposed between these raceway surfaces. Seals 70 are provided on both sides of the row of rolling elements in order to prevent these rolling elements 67 from water and dust from the outside and to prevent the grease inside from leaking.
[0004]
The hub bearing 51 as described above is manufactured precisely so that the rolling element 67 can stably rotate between the rolling surface of the outer ring 55, the raceway surface of the hub wheel 58, and the raceway surface of the inner ring 68. It is necessary to apply various heat treatments and surface treatments to the material so that the seal can be maintained, and furthermore, to properly attach the seal 70. Therefore, these parts are manufactured in a bearing factory as one unitized part.
[0005]
After the hub bearing 51 as described above is manufactured in the bearing factory, the outer end face 71 of the flange 60 is attached to the hub bearing 51 so that the brake rotor 53 of the disc brake incorporated in the automobile assembly factory can rotate without running out. Is machined so as to be at right angles to the center axis and to be an accurate plane. After that, the hub bolt 61 is press-fitted into the flange 60 of the hub wheel 58, and the brake rotor 53 is immediately inserted into the hub bolt 61 without performing the press-fitting work of the hub bolt 61 in an automobile assembling factory. So that you can do it. In the hub bearing 51 shown in FIG. 5, a single row of raceway surfaces is formed directly on the outer peripheral surface of the hub wheel 58, but this raceway surface also has a raceway surface formed on the outer periphery similarly to the raceway surface on the inner end side. The inner ring may be press-fitted. In the claims, "indirectly the inner race of the bearing" is used, but "indirectly" refers to a second-generation hub bearing in which the inner race having the raceway surface is pressed into the hub wheel 58.
[0006]
The hub bearing 51 having the above-described structure is manufactured at the bearing factory as described above. However, since the bearing factory and the automobile assembly factory are usually separated from each other, the hub bearing 51 manufactured at the bearing factory is used in an automobile. Must be transported to an assembly plant. At this time, a packing plastic transport box 73 as shown in FIG. 6 is usually used. The packing plastic transport box 73 is usually manufactured by molding a resin material such as polyacetal or polyamide. On the upper surface 74 side in the figure, as shown in the sectional enlarged view of FIG. An upper surface fitting recess 75 having a shape capable of fitting with the flange 60 side in which the hub bolt 61 is press-fitted at 58 is formed.
[0007]
That is, in this embodiment, as shown in FIG. 7, the upper surface fitting concave portion 75 is formed deeper from the flange receiving hole 76 of a size to which the flange 60 of the hub wheel 58 fits, and the lower surface of the flange receiving hole 76. A bolt receiving hole 77 for fitting the hub bolt 61 to be inserted, and an end receiving hole 78 formed deep in the center of the flange receiving hole 76 to receive the end of the hub wheel are formed, and each part is loose in each receiving hole. The flange 60 side of the hub bearing 51 is housed in the upper surface fitting concave portion 75 so as to be fitted.
[0008]
Further, a cylindrical lower surface fitting recess 81 into which the outer ring 55 of the hub bearing 51 can be fitted is formed on the lower surface 80 side in the figure. The outer ring portion of the hub bearing 51 to be accommodated in the lower surface fitting concave portion 81 has a complicated shape, but at least a cylindrical shape having a diameter at which the maximum outer diameter portion of the flange 56 of the outer ring 55 loosely fits. With the concave portion described above, the function of preventing the hub bearing 51 erected from the upper surface fitting concave portion 75 from falling down can be performed by the lower surface fitting concave portion 81 as described above.
[0009]
Accordingly, when the hub bearing 51 is packed by the packing plastic transport box 73, the flange 60 of the hub wheel 58 in the hub bearing 51 faces the upper surface 74 of the packing plastic transport box 73 as shown in FIG. The flange 60 including 61 is fitted and supported in the upper surface fitting concave portion 75. In the example shown in the figure, the hub bearings 51 are fitted into the nine upper fitting recesses 75, respectively, and then a plastic packing box 73 having a similar shape is placed over these. The outer ring 55 protruding from the upper surface 74 of the packing plastic transport box 73 fits into the formed lower surface fitting concave portion 81, and the upper packing plastic transport box closely contacts the lower packing plastic transport box. The hub bearing 51 can be stored while being protected by the elasticity of the packing plastic transport box.
[0010]
The same packing operation is repeated as appropriate, and the hub bearings 51 are stacked in a predetermined number of stages while being stored in the packing plastic transport box 73. At this time, the concave portion 82 formed around the upper surface 74 of the packing plastic transport box 73 and the convex portion 83 formed around the lower surface 80 are fitted to prevent collapse of the load at the time of transport. The uppermost packing plastic transport box 73 is used as a cover for the lower packing plastic transport box, and these are integrally packed together and transported to an automobile assembly factory. In an automobile assembly plant, the worker removes the uppermost packing plastic transport box 73 on the assembly line, picks up the flange 56 of the outer ring 55 projecting from the upper surface 74 of the packing plastic transport box 73 with one hand, and transports the packing plastic transport box 73. The hub bearing 51 is pulled out from the upper surface fitting recess 75 of the box 73, and the work of mounting the brake rotor 53 of the disc brake is performed on the work table.
[0011]
As described above, the conventional hub bearing 51 mainly includes the hub wheel 58 and the outer ring 55, and although there are various sizes, most of them are about 2 kg to 5 kg. When removing the hub bearing 51 from the transport box 73, the flange 56 can be picked up with one hand and pulled up.
[0012]
On the other hand, in recent years, as shown in FIG. 5B, the hub bearing 51 shown in FIG. 5A is shipped with a brake rotor 53 of a disc brake attached in advance at a bearing factory. Is to be done.
[0013]
That is, in the conventional hub bearing 51, the outer end surface 71 of the flange 60 of the hub wheel 58 to which the brake rotor 53 is attached is formed so that the brake rotor 53 of the disc brake incorporated in the automobile assembly factory as described above does not swing. In order to be able to rotate, the hub bearing 51 is machined so as to be at right angles to the axis of the hub bearing 51 and to have an accurate plane. Similarly, the brake rotor 53 is accurately machined so that the brake rotor 53 does not run out in a brake manufacturing factory.
[0014]
Further, in an automobile assembly factory, when assembling the hub bearing 51 supplied from these bearing manufacturers and the brake rotor 53 separately supplied, the surface runout of the flange side surface 71 of the hub bearing 51 and the surface runout of the brake rotor 53 are assembled. Is adjusted to adjust the phase. This prevents the presence of runout on the side surface of the brake rotor after assembling, thereby preventing the occurrence of vibration during the operation of the brake, and preventing the brake from becoming unevenly worn.
[0015]
In particular, adjusting the runout of the brake rotor after assembling the hub bearing and the brake rotor as described above in an automobile assembly factory is a cumbersome operation in a series of automobile assembly processes and requires skill. It is not preferred. As a countermeasure, as shown in FIG. 5B, a bearing maker or the like incorporates the brake rotor 53 into the hub bearing in advance and fixes the both with the screws 83, and finally performs the runout including phase adjustment of both. Adjustment is performed, and the assembly is transferred to an automobile assembly factory in this assembled state.
[0016]
In addition, as described above, it is described in Japanese Patent Application Laid-Open No. 2000-227132 and U.S. Pat. It is described in.
[0017]
[Patent Document 1]
JP 2000-227132 A [Patent Document 2]
US Pat. No. 6,158,124
[Problems to be solved by the invention]
As described above, after the brake rotor is incorporated into the hub bearing and the run-out adjustment including the phase matching between the two is performed, the hub bearing and the brake rotor that are appropriately combined in the subsequent automobile assembly factory when the two are disjointed. Since it is necessary to carry out the surface run-out adjustment including the phase adjustment again, it is necessary to carry the two together as shown in FIG. is there.
[0019]
For this reason, the hub bearing and the brake rotor are screwed and housed in the above-mentioned plastic packaging box for transportation. At that time, when the worker of the car assembly factory who takes in the same takes out the hub bearing with the brake rotor from the packed plastic transport box, even if he tries to remove it by picking the flange formed on the outer ring as in the above-mentioned case, The weight is as heavy as 10 to 15 kg, and it is almost impossible to pick it with one hand and carry it to the assembling process like the conventional one. In addition, even when the flange is gripped with both hands and transported to the assembly process, even if it can be transported at first, the hand becomes tired while handling a large number, and there is a problem that the working efficiency is reduced. .
[0020]
In addition, when the hub bearing with the brake rotor is taken out of the packed plastic transport box, depending on the orientation at the time of packing, the flange portion which has been conventionally gripped may be covered with the brake rotor, and in this case, it is not possible to grip the projections and the like on the outer periphery. Sometimes, it is necessary to grasp the cylindrical outer peripheral surface of the product with the frictional force between the finger and the product.However, since the product is heavy as described above, the frictional force cannot be maintained gradually, and the user slips from the hand. It is dangerous because it may fall.
[0021]
Therefore, the present invention can easily remove the hub bearing with the brake rotor stored in the storage recess when the hub bearing to which the brake rotor is fixed is stored in the storage recess formed in the packing plastic transport box and transported. It is another object of the present invention to provide a transport box for a hub bearing with a brake rotor which prevents a product from dropping when taken out and moved to a predetermined place.
[0022]
[Means for Solving the Problems]
In order to solve the above-described problems, a hub bearing transport box with a brake rotor according to the present invention has a flange attached to a vehicle body on an outer peripheral surface, an outer ring having a double-row bearing outer race on an inner peripheral surface, and an outer ring at an outer end. A hub having a flange, directly or indirectly on the outer periphery at the center in the axial direction, a hub having a cylindrical portion for externally fitting the inner ring on the outer periphery of the inner end, and an inner race of the bearing on the outer peripheral surface; A hub bearing with a brake rotor including an inner ring having a cylindrical portion on a peripheral surface, a plurality of rolling elements rotatably interposed between an outer race and an inner race of the bearing, and a brake rotor fixed to a flange of the hub. In a transport box that fits into a fitting hole with its axis centered in the vertical direction and is packed, the fitting hole has an outer peripheral edge of a brake rotor fitted in the fitting hole. There are few gripping grooves with a clearance to take out the hub bearing with brake rotor. Kutomo is obtained by two form.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which a brake rotor 12 of a disk brake is mounted on a hub bearing 11 substantially similar to the conventional one, and is stored in a plastic transport box 13 for transportation. This hub bearing 11 also includes an outer ring 14, a hub 15, an inner ring 16 press-fit into the hub, and a rolling element 17 as in the conventional bearing. The outer race 14 has a polygonal flange 18 attached to the vehicle body on the outer periphery, and forms a double-row outer raceway 19 on the inner periphery.
[0024]
Further, the hub 15 has a flange 21 at an outer end which is an end located outside from the center of the vehicle body when the hub bearing 11 is attached to the vehicle body, and is directly provided at the axial center on the outer periphery in the illustrated embodiment. An inner race 18 of the bearing is formed, and a cylindrical portion 22 for externally fitting the inner ring 16 to an outer periphery of an inner end which is an end located on the center side of the vehicle body when the hub bearing 11 is mounted on the vehicle body is formed. ing. Further, the inner race 16 fitted on the cylindrical portion 22 has an inner race 23 of a bearing formed on an outer peripheral surface thereof, and the plurality of rolling elements 17 can roll freely between the outer race and the inner race as described above. Intervenes.
[0025]
The brake rotor 12 includes a ring-shaped outer peripheral portion 24 on both sides of the outer periphery on which brake pads act, and a rotor hub 25 having a crank-shaped cross section in the figure on the inner periphery. The peripheral portion has a flange 26 fixed to the hub bearing 11. The flange 26 is fixed to the flange 21 of the hub 15 by a screw 20, and a hub bolt 27 press-fitted into the flange 21 of the hub 15 is fitted into a bolt insertion hole 28 formed in the flange 26.
[0026]
When the brake rotor 12 is mounted on the hub bearing 11, the outer end surface 30 of the flange 21 of the hub 15 where the brake pad is in contact with the brake pad of the brake rotor 12 is flat. In the manufacturing process of the bearing manufacturer, the flatness, the verticality of the hub bearing 11 with respect to the axial direction, and the like are accurately finished in the manufacturing process of the bearing manufacturer so that the bearing can be rotated without deflection. Also, the brake rotor 12 and the flange 26, including the ring-shaped outer peripheral portion 24, are accurately finished in the manufacturing process of the brake maker so that both side surfaces 31 of the ring-shaped outer peripheral portion 24 of the flange 26 can be rotated without surface runout. ing.
[0027]
Further, after the brake rotor 12 is attached to the hub bearing 11, in order to prevent a run-out of the brake rotor 12 when the brake rotor 12 rotates due to a synergistic manufacturing error between the two, the run-out prevention is performed with the both mounted. For this reason, it is necessary to perform phase adjustment. Conventionally, a hub rotor 11 conveyed from a bearing maker is attached to a hub rotor 11 conveyed from a bearing maker in an automobile assembly factory, and the brake rotor 12 conveyed from a brake maker is rotated to rotate the brake rotor 12. Inspection and phase adjustment were performed.However, performing such work in an automobile assembly factory would be burdensome due to the increase in the number of lines in the factory, the number of processes, and the availability of skilled workers. Manufacturers and the like make such inspections and adjustments, and transport the products directly to an automobile assembly factory. The hub bearing 11 shown in FIG. 1 is also subjected to precise surface run-out inspection and adjustment with the brake rotor 12 attached before being housed in the packing plastic transport box 13 as shown.
[0028]
On the other hand, in the packing plastic transport box 13, the hub bearing 32 with the brake rotor to which the hub bearing 11 and the brake rotor 12 are integrally fixed is arranged such that the flange 21 of the hub bearing 11 is located below as shown in FIG. 1. 1 and FIG. 3 (a), the mounting flange fitting hole 33 into which the flange 26 of the brake rotor 12 fixed to the flange 21 of the hub bearing 11 fits, and the flange fitting thereof. A hub bolt fitting hole 34 formed deeper from the hole 33 and a hub wheel end fitting hole 35 formed at the center of the flange fitting hole 33 and fitting the hub wheel end are formed. A relatively shallow brake rotor outer peripheral fitting hole 36 into which the ring-shaped outer peripheral portion 24 of the brake rotor 12 and the rotor hub 25 are fitted is formed around the flange fitting hole 33.
[0029]
As shown in FIG. 3A, gripping grooves 37 formed deeper than the brake rotor fitting hole 36 are formed around the brake rotor outer fitting hole 36 at positions facing each other as shown in FIG. As shown in FIG. 1, when the brake rotor 12 is fitted in the brake rotor fitting hole 36, the gap 37 between the outer peripheral edge 38 of the brake rotor 12 and the outer peripheral end surface 39 of the grip groove 37 is formed. L1 is, for example, about 50 mm, and is formed such that there is an interval enough to bend a finger from here. Further, the depth H1 is formed to be, for example, about 40 mm, and a depth into which a finger can enter with a margin is provided. The distance L2 between the outer peripheral edge 38 of the brake rotor 12 and the inner peripheral end face 40 of the holding groove 37 is, for example, about 100 mm, and the depth is such that the third joint of the finger enters the lower surface of the brake rotor. Form. The width L3 of the holding groove 37 is, for example, about 100 mm, and the width from which the index finger to the little finger can be inserted is within this width.
[0030]
By forming such a gripping groove 37, when taking out the hub rotor with brake rotor 32 stored in the packing plastic transport box 13 as described above in an automobile assembling factory, the operator needs two gripping grooves. At 37, a finger insertion opening 41 formed between the outer peripheral edge 38 of the brake rotor 12 and the outer peripheral surface 39 of the holding groove in FIG. 1 is formed on the lower surface of the ring-shaped outer peripheral portion 24 of the brake rotor 12. By inserting a finger into the gripping gap 42 and lifting up the hub bearing 32 with the brake rotor with both hands, it can be easily taken out of the packed plastic transport box 13.
[0031]
According to the present invention, in addition to the above-described embodiment, by forming a gripping engagement jig insertion groove 45 as a gripping groove as shown in FIGS. 2A and 3B, for example, It is also possible to take out the hub bearing 32 with the brake rotor from the packed plastic transport box 13 by using the hoist and hooking the engagement jig 47. In the embodiment shown in FIG. 2A, when packing the same hub bearing 32 with a brake rotor as in the embodiment shown in FIG. 1, the packing plastic transport box is turned upside down from that shown in FIG. 13 shows an example of storage. Since the hub bearing with brake rotor 32 shown in FIG. 2 has the same configuration as that shown in FIG. 1, the description of the structure is omitted.
[0032]
In the example shown in FIG. 2A, a brake rotor fitting hole 44 into which the brake rotor 12 fits is provided in order to store the hub rotor 32 with the brake rotor in the packing plastic transport box 13 in a state as shown in the drawing. An outer ring fitting hole 43 into which a part of the outer ring 14 formed deeply fits is formed in the center portion. Further, as shown in FIGS. 2A and 3B, three gripping jig insertion grooves 45 are formed around the brake rotor fitting hole 44 at a distance of 120 degrees from each other. I have.
[0033]
When the brake rotor 12 is fitted in the brake rotor fitting hole 44 as shown in FIG. 2A, the gripping jig insertion groove 45 is in contact with the outer peripheral edge 38 of the brake rotor 12. The space L4 between the jig insertion groove 45 and the outer peripheral end surface 46 is, for example, about 20 mm, and is a space from which a substantially U-shaped gripping engagement jig 47 as shown in FIG. 2B can be inserted. Is formed so as to exist. The depth H2 is set to, for example, about 10 mm, and the depth is set such that the hooking portion 48 of the gripping jig 47 can be inserted with a margin. Other dimensions of the gripping engagement jig insertion groove 45 are appropriately determined according to the size of the gripping engagement jig 47 that is inserted into the gripping engagement jig insertion groove 45 and grips the periphery of the brake rotor 12. Set.
[0034]
Although the gripping jig 47 can be of various shapes, in the example shown in FIG. 2 (b), it has a substantially U-shape, and the lower end thereof has the brake rotor 12 as described above. The upper end 49 has a hole 50 into which the tip of the hook 29 is inserted, as shown in FIG. As shown in FIG. 2A, three such gripping jigs 47 are inserted into three gripping jig insertion grooves 45 as shown in FIG. The hook portion 48 is inserted from the periphery of the outer peripheral edge 38 of the brake rotor 12 to the lower surface thereof and hooked here. The tip of the hook 29 is inserted into the hole 50 of each gripping jig 47, and a chain or the like connected to the base of the hook 29 is guided to the center side to be integrated into one, and this is lifted up by a hoist, so that a large-sized The hub bearing with brake rotor 32 can also be easily taken out of the packed plastic transport box 13.
[0035]
In the above-described embodiment, an example in which a third-generation hub bearing accommodates a hub bearing using a ball as a rolling element in a carrier box according to the present invention and transports the same is shown. The present invention is not limited to this, and can be applied to a second-generation hub bearing or a conical roller as a rolling element.
[0036]
【The invention's effect】
Since the present invention is configured as described above, after adjusting the surface runout of the brake rotor in a state where the brake rotor is attached to the hub bearing in advance, the hub bearing to which the brake rotor is fixed is formed in the carrier box. When stored in a hole and transported, and taken out at an automobile assembly factory or the like, insert a hand into each gripping groove and hold while supporting the peripheral edge portion of the brake rotor from its lower surface, or use a gripping jig. It can be inserted from this gripping groove and hung on the peripheral edge of the brake rotor to be gripped, and the hub bearing with brake rotor housed in the fitting hole can be easily taken out. When the hub bearing with brake rotor is taken out and moved to a predetermined place, the hub bearing with brake rotor can be securely grasped and moved, so that the product does not fall.
[Brief description of the drawings]
FIG. 1 is a sectional view of an embodiment of the present invention.
FIG. 2 is a sectional view of another embodiment of the present invention.
3A and 3B are diagrams showing various concave portions and grooves formed in a transport box used in the present invention, wherein FIG. 3A is a diagram of the embodiment of FIG. 1 and FIG. 3B is a diagram of the embodiment of FIG. is there.
FIG. 4 is a sectional view showing a mode of use of a hub bearing and a brake rotor in the present invention.
FIGS. 5A and 5B are cross-sectional views showing various aspects of a hub bearing conveyed to an automobile assembly plant, wherein FIG. 5A is a view showing only a hub bearing, and FIG. 5B is a view showing a hub bearing with a brake rotor. is there.
FIG. 6 is a perspective view showing a state where a conventional hub bearing alone is housed in a transport box.
FIG. 7 is a cross-sectional view showing a state where a conventional hub bearing alone is housed in a transport box.
[Explanation of symbols]
11 Hub Bearing 12 Brake Rotor 13 Packing Plastic Carrier Box 14 Outer Ring 15 Hub Wheel 16 Inner Ring 17 Rolling Element 18 Flange 19 Outer Track 20 Screw 21 Flange 22 Cylindrical Part 23 Inner Track 24 Ring Outer Part 25 Rotor Hub 26 Flange 27 Hub Bolt 28 Bolt Insertion Hole 37 gripping groove 38 outer peripheral edge 39 outer peripheral surface 41 finger insertion port 42 gripping gap

Claims (1)

An outer ring having a flange attached to the vehicle body on an outer peripheral surface, and having an outer raceway of a double row bearing on an inner peripheral surface,
A hub having a flange at the outer end, and having a cylindrical portion for externally fitting the inner ring to the outer periphery of the inner end, directly or indirectly on the outer periphery at the center in the axial direction,
An inner race of the bearing on the outer peripheral surface, an inner ring having a cylindrical portion on the inner peripheral surface,
A plurality of rolling elements rotatably interposed between an outer race and an inner race of the bearing;
In a transport box in which a hub bearing with a brake rotor having a brake rotor fixed to a flange of a hub is fitted and packed in a fitting hole with its axis oriented vertically,
A brake, wherein at least two gripping grooves having a clearance for taking out a hub bearing with a brake rotor are formed between the fitting hole and an outer peripheral edge of a brake rotor fitted into the fitting hole. Transport box for hub bearing with rotor.

Images