JP2018146069A - Bearing member, inspection method thereof, and rolling bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing member used for a rolling bearing and where a substrate is subjected to flocking, which can easily determine whether fibers are flocked on a contact surface of the substrate with a rolling body.SOLUTION: A holder 5 for a rolling bearing, where a substrate 7 is subjected to flocking, has a flock body 6 where fibers with a color B are flocked with respect to the substrate 7 of which a color of a pocket part 9, which is a contact surface with a rolling body of the rolling bearing in the holder 5, is a color A, wherein the color A and the color B are different. In the pocket part 9, based on whether existence of the color B of the flock body 6 can be recognized, the presence/absence of the flock part 6 in the pocket part 9 is determined.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a bearing member subjected to flocking treatment and an inspection method thereof. Moreover, it is related with the rolling bearing provided with this bearing member.

  A rolling bearing is composed of an inner ring, an outer ring, rolling elements, and a cage, and the inside of the bearing is lubricated with a lubricant such as oil or grease. In addition, the rolling bearing may be provided with a seal member at the opening end portion in order to prevent foreign matter from entering from the outside or to prevent the lubricant enclosed inside from flowing out.

  In the field of rolling bearings, various contrivances have been made for improving lubrication characteristics including reduction of rotational torque. For example, Patent Document 1 proposes a bearing member (such as a cage) obtained by performing a flocking process on a base material. In the cage of the rolling bearing disclosed in Patent Document 1, fibers are planted on the surface of the base material that is not in contact with the rolling element but in contact with the lubricant (grease). For this reason, grease is held in the group of fibers that are planted, and lubrication characteristics can be improved. Specifically, the agitation and shearing of the grease can be suppressed, resulting in a low torque and a long life. This is because the grease adheres to the fiber group and rotates together with the cage without being sheared, and no stirring resistance is generated. Also, grease leakage is reduced.

JP-A-2015-194256

  In the rolling bearing retainer described in Patent Document 1, fibers are planted on the surface of the base material. However, in order not to impair the function of the bearing, the place to be planted is the surface of the base material with the rolling element. It must be a surface other than the contact surface. For this reason, after a hair transplantation process, it is test | inspected whether the fiber is planted on the contact surface (pocket part) with the rolling element of a base material.

  However, normally, when nylon fiber (brown) is planted on a nylon base material (brown), the fiber color and the base material color are the same, so there is no fiber planted on the contact surface. It is difficult to tell whether or not there is a problem in the efficiency of inspection.

  The present invention has been made to cope with the above problem, and in a bearing member in which a base material is subjected to flocking treatment, it is inspected whether or not fibers are flocked on a contact surface with the rolling element of the base material. It is an object of the present invention to provide an easy method, a bearing member that can be an inspection target of the method, and a rolling bearing including the bearing member as a component.

  A bearing member according to a first aspect of the present invention is a bearing member for a rolling bearing formed by flocking a base material, and the bearing member is one of an inner ring, an outer ring, a cage, and a seal member. Yes, it is characterized in that the color A and the color B are different by flocking fibers of the color B to the base material whose color of the contact surface with the rolling element of the rolling bearing is the color A. In particular, the bearing member is a cage, and the contact surface is a pocket portion.

  The bearing member of the second invention of the present application is a bearing member for a rolling bearing in which a base material is flocked, and the bearing member is one of an inner ring, an outer ring, a cage, and a seal member. In the surface of the base material, the fiber of the color B is implanted in the basic area which is the entire range where the color is the color A, and the color A and the color B are different.

  The following form is mentioned as a bearing member of 1st invention or 2nd invention. The bearing member according to the first or second invention, wherein the entire surface of the substrate is color A. The bearing member of the first invention or the second invention, wherein the color A is black or brown and the color B is white.

  A rolling bearing according to a third invention of the present application includes an inner ring and an outer ring that are race rings, a plurality of rolling elements interposed between the inner and outer rings, a cage that holds the rolling elements, and axial directions of the inner ring and the outer ring. A rolling bearing comprising a seal member provided at both end openings and a lubricant made of grease or lubricating oil sealed in a bearing inner space, wherein the inner ring, the outer ring, the cage, and the seal At least one member selected from the members is the bearing member of the first invention or the second invention.

  Regarding the inspection method of the bearing member of the fourth invention of the present application, the inspection object is the bearing member of the first invention, and there is no fiber planted on the contact surface of the base material in the inspection object. And determining based on the color information.

  According to the bearing member inspection method of the fifth invention of the present application, the inspection object is the bearing member of the second invention, and the position of the fiber in the base material to be inspected is good based on the color information about the inspection object. The method includes a step of determining whether or not it is defective.

  In the bearing member of the first invention of the present application, there is an easy determination method for the presence or absence of fibers implanted on the contact surface. For example, the presence or absence of flocked fibers on the contact surface is determined depending on whether or not the presence of the color B can be recognized in the range of the contact surface. That is, if the presence of the color B can be recognized in the range of the contact surface, it is determined that the fibers are implanted on the contact surface. If the existence of the color B cannot be recognized in the range of the contact surface, the fibers are implanted on the contact surface. Judge that it is not. This can be done with the naked eye or screen.

  The bearing member of the second invention of the present application has an easy method for determining the appropriateness of the flocking position. For example, the position of the color B recognized in the base area to be inspected is compared with the position of the color B recognized in the base area of the sample planted at the appropriate position to determine the appropriateness of the flocked position. This can be done with the naked eye or screen.

It is a partial cross section figure of the rolling bearing which is one Example of 3rd invention of this application. It is a perspective view of the holder | retainer which is one Example of the bearing member of 1st invention of this application or 2nd invention.

The first invention of the present application will be described.
1st invention of this application is a bearing member by which the base material is flocked for rolling bearings, Comprising: With respect to the said base material whose color of the contact surface with the rolling element of the said rolling bearing is the color A, it is color It is characterized in that the color A and the color B are different by implanting B fibers. Here, the “contact surface with the rolling element” of the substrate refers to the surface of the substrate that comes into contact with the rolling element when the substrate is incorporated into a rolling bearing without being subjected to flocking treatment. For example, in an embodiment described later with reference to FIGS. 1 and 2, the pocket portion 9 is a contact surface of the crown-shaped cage 5 with the rolling element 4 of the base material 7.

  Examples of the bearing member include an inner ring, an outer ring, a cage, and a seal member that are components of a rolling bearing. Examples of the cage include a crown-shaped cage, a corrugated cage, and a machined cage. Moreover, arbitrary materials, such as a metal material and a resin material, are employable as a material of the base material of a cage.

  The base material of the cage is, for example, a resin selected from polyamide resins such as polyetheretherketone (PEEK) resin, polyphenylene sulfide (PPS) resin, thermoplastic polyimide resin, polyamideimide resin, nylon 66 resin, nylon 46 resin, etc. Consists of. This may contain reinforcing fibers such as carbon fibers and glass fibers, and other additives. Moreover, what colored the said resin with the coloring agent can be used.

  Examples of the sealing member include a reinforcing metal plate and a rubber member constituting a sealing lip, a sealing member made of rubber having no metal plate, and a metal plate (shield plate).

  The first invention of the present application is not particularly limited for the purpose of flocking, but the grease is fixed and held on the flocked fiber group, so that stirring and shearing of the grease is suppressed, and low torque and long life are achieved. In the case where the purpose is to obtain oil, the case where the purpose is to eliminate the need to supply oil from the outside by causing the flocked fibers to absorb the lubricating oil.

  The flocking is performed by fixing a group of short fibers to the surface of the base material with an adhesive, and a method such as spraying or electrostatic flocking can be employed. It is preferable to employ electrostatic flocking because a large amount of fibers can be planted in a dense manner in a short time and perpendicularly to each surface in curved surfaces such as the inner and outer diameter surfaces and the race ring shoulders of the cage. As the electrostatic flocking method, a known method can be adopted.For example, after applying an adhesive to a range where electrostatic flocking is performed, the short fibers are charged and flocked substantially perpendicularly to the adhesive application surface by electrostatic force, The method of performing a drying process, a finishing process, etc. is mentioned.

  The short fiber used for flocking is not particularly limited as long as it can be used as a short fiber for flocking. For example, (1) polyolefin resin such as polyethylene and polypropylene, polyamide resin such as nylon, aromatic polyamide resin, polyethylene terephthalate, Polyester resin such as polyethylene naphthalate, polyethylene succinate, polybutylene terephthalate, synthetic resin fiber such as acrylic resin, vinyl chloride, vinylon, (2) inorganic fiber such as carbon fiber, glass fiber, (3) rayon, acetate, etc. And natural fibers such as cotton, silk, hemp and wool. These may be used independently and 2 or more types may be used together. It is preferable to use synthetic resin fiber among the above because it is difficult to cause swelling and dissolution with oil, is chemically stable, can produce a large amount of homogeneous fibers, and can be obtained at low cost.

  Further, colored fibers can be used. As a method for coloring the resin fibers, there are external coloring for coloring the resin surface and internal coloring for coloring the resin by kneading the coloring agent. For example, what is obtained by applying a white coating on the fiber surface of a polyamide resin such as nylon may be used.

  Examples of the shape of the short fiber include those having a length of 0.5 to 2.0 mm and a thickness of 0.5 to 50 dtex. There are straight and bend (shape where the tip is bent) as the shape of the short fiber, and the cross-sectional shape is circular or polygonal. The bend shape can hold the grease more strongly than the straight shape. By using the short fibers having a polygonal cross section, the surface area can be made larger than that of the short fibers having a circular cross section, and the surface tension of the lubricant can be increased. It is preferable to select the shape of the short fiber according to each characteristic.

  Examples of the adhesive include an adhesive mainly composed of urethane resin, epoxy resin, acrylic resin, vinyl acetate resin, polyimide resin, silicone resin and the like. For example, urethane resin solvent adhesive, epoxy resin solvent adhesive, vinyl acetate resin solvent adhesive, acrylic resin emulsion adhesive, acrylate-vinyl acetate copolymer emulsion adhesive, vinyl acetate emulsion adhesive , Urethane resin emulsion adhesive, epoxy resin emulsion adhesive, polyester emulsion adhesive, ethylene-vinyl acetate copolymer adhesive and the like. These may be used independently and 2 or more types may be used together.

  In a bearing member in which a base material is subjected to flocking treatment, if fibers are flocked on the contact surface of the base material with the rolling elements, the bearing function is impaired, so this must be avoided. In the bearing member of the first invention of the present application, there is an easy determination method for the presence or absence of fibers implanted on the contact surface.

  For example, the presence or absence of flocked fibers on the contact surface is determined depending on whether or not the presence of the color B can be recognized in the range of the contact surface. That is, if the presence of the color B can be recognized in the range of the contact surface, it is determined that the fibers are implanted on the contact surface. If the existence of the color B cannot be recognized in the range of the contact surface, the fibers are implanted on the contact surface. Judge that it is not. This can be done with the naked eye or screen.

  As another example, if the presence of the color B can be recognized in the range of the contact surface, it is determined whether or not it is a fiber implanted in the contact surface. If the presence of the color B cannot be recognized in the range of the contact surface, For example, it may be determined that fibers are not planted on the contact surface. In this example, even if the presence of the color B is recognized in the range of the contact surface, it may not be determined that the fiber is flocked to the contact surface (a contact surface partially overlying the contact surface) For example, when the fibers are planted outside.

  In 1st invention, it is preferable to provide nothing in a base material except planting the said fiber with an adhesive agent.

  In order to increase the accuracy of the above determination, it is preferable that the difference between the color of the contact surface (color A) and the color of the fiber (color B) is large. For example, the color A may be black or brown and the color B may be white, as in the case of a combination of a non-colored polyamide resin base (brown) and a white coated polyamide fiber. Can be mentioned. About the difference of the color A and the color B, what is necessary is just to set it as a different color judging, for example on the basis of JISZ8721 (1993).

  As an embodiment of the first invention, when only the contact surface has color A on the surface of the substrate, when the contact surface and the vicinity of the contact surface on the substrate surface have color A, the entire surface of the substrate has color A. The case where it has is mentioned.

The fourth invention of the present application will be described.
4th invention of this application determines that a test object is the bearing member of the said 1st invention, and there is no fiber planted on the contact surface of the base material of test | inspection based on the color information about the said test object. A bearing member inspection method including steps.

  As an example of the step of the present invention, either (1) a determination that “there are fibers implanted on the contact surface” or “no fibers implanted on the contact surface” is determined for the inspection object. And (2) those that give a determination that “there are no fibers planted on the contact surface” or that do not give any determination of the presence or absence of the fibers. .

  As an example of the above (2), in the inspection object, when the presence of the color B is not recognized on the contact surface, a determination is made that “there is no fiber implanted on the contact surface”, and the color of the color B on the contact surface When presence is recognized, the thing which does not give any determination of the presence or absence of this fiber is mentioned. It can be considered that a judgment that “there is no fiber implanted on the contact surface” is accepted, and other things are rejected (or are subject to separate inspection).

  The inspection method of the present invention is carried out for each of a plurality of bearing members manufactured under the same design. The shape of the base material and the range of the contact surface on the base material are substantially constant regardless of the inspection object.

  The contact surface of the base material to be inspected can be estimated by visual inspection of the range of the inspection target even after flocking. For example, the contact surface of the base material is a side on the surface of the base material such as the pocket portion 9 in the cage of FIG. A sectioned surface.

  Embodiments of the present invention include visual inspection and image inspection. In the visual inspection, the color information about the inspection object is an arrangement of colors recognized by viewing the inspection object with the naked eye.

  As an example of visual inspection, when the presence of color B is not recognized in the region directly above the contact surface by visual inspection, it is determined that there is no fiber implanted on the contact surface, and the presence of color B is present. If yes, the appearance further determines whether it is a fiber implanted on the contact surface or a fiber partly planted outside the contact surface that rests on the contact surface By this, what includes the step which determines the presence or absence of the fiber planted on the contact surface of a base material is mentioned. Here, nothing is provided on the base material to be inspected except that the fibers are planted with an adhesive.

  In the image inspection, the color information about the inspection object is digital data of the image to be inspected. For example, a binarized image obtained by photographing the inspection object can be mentioned.

  As an example of image inspection, if the color range on the image corresponding to the color of the fiber is determined in advance, and there is a color corresponding to the color of the fiber in the “range of the contact surface on the image to be inspected”, the contact surface Determining that there is no fiber implanted on the contact surface when there is no color corresponding to the color of the fiber in the “range of the contact surface on the image to be inspected”. Including. Nothing is provided on the substrate to be inspected except that the fibers are planted with an adhesive. Here, the “range of the contact surface on the image to be inspected” is fixed on the image without having to be certified for each individual object to be inspected by performing image capturing under the same conditions regardless of the object to be inspected. Can with range. Further, this step is executed as a process by an electronic computer.

  In the above example, in the range of the contact surface on the image to be inspected, the presence or absence of fibers implanted on the contact surface is determined based on whether or not there is a color corresponding to the color of the fiber. If there are some fibers that are planted and some of them are on the contact surface, this determination method will determine that there are fibers that are uniformly planted on the contact surface. In the case of a flocking position design that has a high probability of being present, a range obtained by excluding a predetermined range near the boundary of the range from the range of the contact surface on the image to be inspected is set as an effective range, and the range is within this effective range. Only when there is a color corresponding to the color of the fiber, it may be determined that there is a fiber implanted on the contact surface.

The second invention of the present application will be described.
2nd invention of this application is a bearing member by which the base material is flocked for rolling bearings, Comprising: In the base area which is the whole range whose color is the color A among the surfaces of the said base material, color B It is characterized in that the color A and the color B are different from each other. Examples of the bearing member include an inner ring, an outer ring, a cage, and a seal member that are components of a rolling bearing. The configuration of the bearing member, the details of flocking, etc. in the second invention are the same as in the first invention.

  The bearing member according to the first aspect of the invention is a member that can particularly determine the presence or absence of fibers implanted on the surface by paying attention to the contact surface with the rolling element. On the other hand, the bearing member of the second invention is a member that can determine whether or not the flocking is as planned in the basic region, with the appropriate range (desired range) of flocking as the basic region. In the second invention, if the basic area is the “contact surface with the rolling element”, it is the same as the first invention.

  The bearing member of the second invention of the present application has an easy method for determining the appropriateness of the flocking position. For example, the position of the color B recognized in the base area to be inspected is compared with the position of the color B recognized in the base area of the sample planted at the appropriate position to determine the appropriateness of the flocked position. This can be done with the naked eye or screen. In addition, in 2nd invention of this application, it is preferable to provide nothing in a base material except planting the said fiber with an adhesive agent.

  In order to increase the accuracy of the above determination, it is preferable that the difference between color A and color B is large. For example, the color A may be black or brown and the color B may be white, as in the case of a combination of a non-colored polyamide resin base (brown) and a white coated polyamide fiber. Can be mentioned. About the difference of the color A and the color B, what is necessary is just to set it as a different color judging, for example on the basis of JISZ8721 (1993).

  As an embodiment of the second invention of the present application, there are a case where the base region is a part of the surface of the base material and a case where the base region is the whole.

The fifth invention of the present application will be described.
In the fifth invention of the present application, the inspection object is the bearing member of the second invention, and the step of determining whether the position of the fiber in the base material to be inspected is good or bad is based on the color information about the inspection object. It is the inspection method of the bearing member characterized by including.

  The inspection method of the present invention is carried out for each of a plurality of bearing members manufactured under the same design. The shape of the base material and the range of the base area in the base material are substantially constant regardless of the inspection object.

  The base area of the substrate to be inspected can be estimated by visual inspection of the range in the object to be inspected even after flocking, for example, the entire surface of the substrate.

  Embodiments of the present invention include visual inspection and image inspection. In the visual inspection, the color information about the inspection object is an arrangement of colors recognized by viewing the inspection object with the naked eye.

  As an example of visual inspection, the position of the color B in the base area of the inspection object recognized by visual inspection and the position of the color B in the base area of the sample (fibers are planted at a desired position) recognized by visual inspection. In comparison, when these are recognized to be substantially the same, the position of the fiber in the base material to be inspected is determined to be good, and if not, it includes a step of determining to be defective.

  In the image inspection, the color information about the inspection object is digital data of the image to be inspected. For example, a binarized image obtained by photographing the inspection object can be mentioned.

  As an example of image inspection, the range of colors on the image corresponding to the color of the fiber is determined in advance, the position of the color corresponding to the color of the fiber in the “range of the basic area on the image to be inspected”, and the “sample” When the difference is within a predetermined range, the position of the fiber on the substrate to be inspected is determined as follows. What includes the step of determining as good and determining as bad if not is included. Here, “the range of the basic area on the image to be inspected” and “the range of the basic area on the image of the sample” are obtained by performing image capturing under the same conditions through all the inspection objects and samples. This eliminates the need for certification for each inspection object, and allows a fixed range on the image. Further, this step is executed as a process by an electronic computer.

The third invention of the present application will be described.
A rolling bearing according to a third invention of the present application includes an inner ring and an outer ring that are raceways, a plurality of rolling elements interposed between the inner and outer rings, a cage that holds the rolling elements, and both axial ends of the inner ring and the outer ring. A rolling bearing comprising a seal member provided in an opening and a lubricant made of grease or lubricating oil sealed in a bearing inner space, the rolling bearing comprising at least an inner ring, an outer ring, a cage, and a seal member One member is the bearing member of the first invention or the second invention. Depending on the form of the rolling bearing, a structure without a seal member may be used.

  The rolling bearing of the third invention of the present application is lubricated with lubricating oil or grease. These lubricants (lubricating oil / grease) are supplied and sealed in the bearing inner space, and are lubricated by being interposed in the rolling surface. Any lubricating oil can be used without particular limitation as long as it is usually used for rolling bearings. For example, mineral oils such as paraffinic mineral oil and naphthenic mineral oil, polybutene oil, poly-α-olefin oil, hydrocarbon synthetic oil such as alkylbenzene oil and alkylnaphthalene oil, or natural oils and fats, polyol ester oils, phosphate ester oils , Non-hydrocarbon synthetic oils such as diester oil, polyglycol oil, silicone oil, polyphenyl ether oil, alkyl diphenyl ether oil, and fluorinated oil. These lubricating oils may be used alone or in combination of two or more.

  As the grease, any grease that is usually used for rolling bearings can be used without particular limitation. Examples of the base oil constituting the grease include the above-described lubricating oil. Further, as the thickener constituting the grease, for example, aluminum soap, lithium soap, sodium soap, composite lithium soap, composite calcium soap, composite aluminum soap and other thickening agents such as diurea compounds and polyurea compounds. Fluorine resin powders such as urea compounds and PTFE resins can be mentioned. These thickeners may be used alone or in combination of two or more.

  Moreover, a well-known additive can be added to a lubricant as needed. Examples of additives include extreme pressure agents such as organic zinc compounds and organic molybdenum compounds, antioxidants such as amine-based, phenol-based and sulfur-based compounds, anti-wear agents such as sulfur-based and phosphorus-based compounds, and polyhydric alcohols. Examples include rust preventives such as esters, viscosity index improvers such as polymethacrylate and polystyrene, solid lubricants such as molybdenum disulfide and graphite, and oily agents such as esters and alcohols.

  The amount of the lubricant enclosed is not particularly limited as long as desired lubrication characteristics can be secured, but is preferably about 50% to 80% (volume ratio) of the static space volume in the bearing inner space.

  As the form of the rolling bearing of the third invention of the present application, for example, a deep groove ball bearing, an angular ball bearing, a thrust ball bearing, a cylindrical roller bearing, a needle roller bearing, a thrust cylindrical roller bearing, a thrust needle roller bearing, a tapered roller bearing, Examples include thrust tapered roller bearings, self-aligning ball bearings, self-aligning roller bearings, and thrust self-aligning roller bearings.

  Examples of the rolling bearing and the bearing member of the present application will be described with reference to FIGS. FIG. 1 is a partial cross-sectional view of a deep groove ball bearing which is an embodiment of the third invention of the present application, in which a crown-shaped cage which is an embodiment of the bearing member of the first invention of the present application is incorporated. ing. FIG. 2 is a perspective view of the crown-shaped cage.

  As shown in FIG. 1, in the rolling bearing 1, an inner ring 2 having a rolling surface 2a on the outer peripheral surface and an outer ring 3 having a rolling surface 3a on the inner peripheral surface are arranged concentrically. A plurality of rolling elements 4 are disposed between the rolling surface 2a of the inner ring and the rolling surface 3a of the outer ring. The plurality of rolling elements 4 are held by a crown-shaped cage 5. Further, the rolling bearing 1 includes an annular seal member 11 provided at both axial openings of the inner and outer rings, and in the bearing inner space constituted by the inner ring 2, the outer ring 3, the cage 5, and the seal member 11. It is lubricated by the enclosed grease 12.

  As shown in FIG. 2, the crown-shaped cage 5 is formed by forming a flocked body 6 on the base material 7. The flocked body 6 is formed by fixing a group of fibers to the surface of the base material 7 via an adhesive, and is composed of the adhesive layer and the group of fibers. In the base material 7 of the crown-shaped cage 5, a pair of opposed holding claws 8 are formed at a constant pitch in the circumferential direction, and a pocket portion 9 that holds a ball as a rolling element between the holding claws 8. Is formed. The base material 7 has the pocket portions 9 and the flat portions 10 alternately in the circumferential direction.

  The crown-shaped cage 5 includes the pocket portion 9 that is a contact surface of the base material 7 with the rolling elements, and the color of the entire surface of the base material 7 is brown, and the fibers are white (in the figure, It is possible to easily determine visually whether or not the group of fibers reaches the pocket portion 9 that is a contact surface with the rolling element.

  The crown-shaped cage 5 is an example of the bearing member of the second invention of the present application because the entire surface of the base material 7 is brown and white fibers are implanted therein. It is easy to recognize the position of the fiber on the three-dimensional surface. Therefore, it is good when the hair is planted in the outer diameter surface 7a and the inner diameter surface 7b that are not in contact with the rolling element and in contact with the enclosed grease, and when it is not, the determination is made as bad. Can be easily done.

  For the rolling bearing of the present invention, the bearing member obtained by flocking the base material can easily determine whether the position of flocking on the base material is appropriate, so that the efficiency of product inspection can be improved, It can be widely used in the manufacture of rolling bearings.

DESCRIPTION OF SYMBOLS 1 Rolling bearing 2 Inner ring 3 Outer ring 4 Rolling body 5 Cage 6 Flocking body 7 Base material 8 Holding claw 9 Pocket part 10 Flat part 11 Seal member 12 Grease

Claims (8)

A bearing member for a rolling bearing in which a base material is flocked,
The bearing member is any one of an inner ring, an outer ring, a cage, and a seal member, and a color B fiber with respect to the base material whose color of the contact surface with the rolling element of the rolling bearing is a color A A bearing member, wherein the color A and the color B are different from each other. A bearing member for a rolling bearing in which a base material is flocked,
The bearing member is any one of an inner ring, an outer ring, a cage, and a seal member, and a fiber of color B is placed in a base area that is the entire range in which the color is color A on the surface of the base material. A bearing member obtained by planting hair and having different colors A and B.   The bearing member according to claim 1, wherein the entire surface of the base material is a color A.   The bearing member according to claim 1 or 2, wherein the color A is black or brown, and the color B is white.   The bearing member according to claim 1, wherein the bearing member is the cage, and the contact surface is a pocket portion. Inner and outer rings that are raceways, a plurality of rolling elements interposed between the inner and outer rings, a cage that holds the rolling elements, and seal members that are provided at openings in both axial ends of the inner and outer rings A rolling bearing provided with a lubricant made of grease or lubricating oil enclosed in the bearing inner space,
The rolling according to claim 1, wherein at least one member selected from the inner ring, the outer ring, the cage, and the seal member is a bearing member obtained by flocking a base material according to claim 1. bearing.   The test object is a bearing member according to claim 1, and includes a step of determining based on color information about the test object that there is no fiber implanted on the contact surface of the base material in the test object. A bearing member inspection method characterized by the above.   The inspection object is the bearing member according to claim 2, and includes a step of determining whether the position of the fiber in the base material to be inspected is good or bad based on color information about the inspection object. An inspection method for bearing members.

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