JP2008008424A - Railroad vehicle bearing device - Google Patents
Railroad vehicle bearing device Download PDFInfo
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- JP2008008424A JP2008008424A JP2006180071A JP2006180071A JP2008008424A JP 2008008424 A JP2008008424 A JP 2008008424A JP 2006180071 A JP2006180071 A JP 2006180071A JP 2006180071 A JP2006180071 A JP 2006180071A JP 2008008424 A JP2008008424 A JP 2008008424A
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- Prior art keywords
- axle
- inner ring
- annular spacer
- end surface
- ring
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/768—Sealings of ball or roller bearings between relatively stationary parts, i.e. static seals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
- F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
- F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/10—Railway vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
本発明は、鉄道車両の車軸を支持する鉄道車両用軸受装置に関する。 The present invention relates to a railway vehicle bearing device that supports an axle of a railway vehicle.
鉄道車両の車軸を支持する鉄道車両用軸受装置には、図4に示すように、車軸1を支持する転がり軸受2の内輪3の後面側に、車軸1の拡径部1aに嵌合固定される後蓋6を設け、車軸1に圧入される内輪3の軸方向位置を位置決めするようにしたものがある。内輪3の前面側には、転がり軸受2を抜け止めする前蓋7が設けられる。この例では、外輪4の両端部に装着されたシール部材8を後蓋6と前蓋7の外周面に摺接させて、軸受内部を密封するようにしている。
As shown in FIG. 4, the railway vehicle bearing device that supports the axle of the railway vehicle is fitted and fixed to the diameter-enlarged
上述した鉄道車両用軸受装置では、鉄道車両に特有の過大なラジアル荷重によって車軸1に大きな曲げモーメントが負荷されると、互いに当接する内輪3の後端面と後蓋6の前端面との間に繰り返し応力が発生し、これらの端面にフレッティング摩耗が生じる。このようなフレッティング摩耗が生じると、転がり軸受2の軸方向精度が低下するとともに、フレッティング摩耗で発生した摩耗粉が軸受内部に侵入して、軸受寿命が短くなる問題がある。
In the above-described bearing device for a railway vehicle, when a large bending moment is applied to the
このような問題に対して、前記転がり軸受の内輪の後端面と後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着することにより、両端面でのフレッティング摩耗を抑制するとともに、発生した摩耗粉の軸受内部への侵入を防止することが提案されている(例えば、特許文献1参照)。 For such a problem, between the rear end surface of the inner ring of the rolling bearing and the front end surface of the rear lid, an annular spacer is interposed between the two end surfaces, and the outer peripheral end of the annular spacer. In addition, by fixing an annular elastic sealing member that seals between the rear end surface of the inner ring and the front end surface of the rear lid, the fretting wear on both end surfaces is suppressed and the generated wear powder enters the bearing. Has been proposed (see, for example, Patent Document 1).
特許文献1に記載された鉄道車両用軸受装置は、内輪の後端面と後蓋の前端面との間でのフレッティング摩耗を抑制できるとともに、摩耗粉の軸受内部への侵入を防止できるが、軸受装置を車軸に組み込むときに、圧入される内輪と車軸の間にスティックスリップが生じると、内輪の後端面に環状スペーサを介して当接された後蓋は、その後端部の内径面が車軸の拡径部に嵌合されるまでは、ルーズに車軸に外嵌されているので、スティックスリップによる内輪の間歇的な急前進によって叩かれ、内輪の後端側から大きく離脱することがある。このため、内輪の後端面と後蓋の前端面との間に介在する環状スペーサが倒れ込んで、軸受装置の組み込み作業に支障を来たす問題がある。また、外輪の後端部に装着されたシール部材が後蓋の外周面から外れ、軸受内部に異物が侵入する恐れもある。
The railway vehicle bearing device described in
そこで、本発明の課題は、車軸に圧入される内輪にスティックスリップが生じても、環状スペーサが倒れ込まないようにすることと、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることである。 Therefore, the object of the present invention is to prevent the annular spacer from falling down even if a stick slip occurs in the inner ring that is press-fitted into the axle, and the seal member attached to the rear end of the outer ring It is to prevent it from coming off the surface.
上記の課題を解決するために、本発明は、鉄道車両の車軸を支持する転がり軸受の内輪の後端面と、その後面側で車軸に外嵌される後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着した鉄道車両用軸受装置において、前記内輪の後端面と後蓋の前端面との間に、前記車軸の外径面と前記後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、前記環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けた構成を採用した。 In order to solve the above-described problems, the present invention is provided between a rear end surface of an inner ring of a rolling bearing that supports an axle of a railway vehicle and a front end surface of a rear cover that is fitted on the axle on the rear surface side. An annular spacer is disposed in contact with both end surfaces of the annular spacer, and an annular elastic seal member for sealing between the rear end surface of the inner ring and the front end surface of the rear lid is fixed to the outer peripheral side end portion of the annular spacer. In the bearing device, between the rear end surface of the inner ring and the front end surface of the rear lid, the shaft is fitted between the outer diameter surface of the axle and the inner diameter surface of the rear lid so that the inner surface of the rear lid is tightly fitted. A configuration in which a cylindrical part to be fitted and a ring-shaped member having a flange part rising outward from the front end of the cylindrical part and contacting the front end surface of the annular spacer is provided.
すなわち、内輪の後端面と後蓋の前端面との間に、車軸の外径面と後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けることにより、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが後蓋の前端面から離脱しないようにし、環状スペーサの倒れ込みを防止できるようにした。 That is, a cylinder that is fitted between the rear end surface of the inner ring and the front end surface of the rear lid, between the outer diameter surface of the axle and the inner diameter surface of the rear lid, and is tightly fitted to the inner diameter surface of the rear lid. And a ring-shaped member having a flange portion that rises outward from the front end of the cylindrical portion and abuts against the front end surface of the annular spacer, so that the rear lid is hit by intermittent abrupt advancement of the inner ring by stick-slip. Therefore, even if the rear lid is detached from the rear end side of the inner ring, the annular spacer is prevented from being detached from the front end surface of the rear lid, so that the annular spacer can be prevented from falling down.
前記リング状部材の円筒部を、前記車軸の外径面にもタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。 The cylindrical portion of the ring-shaped member is fitted to the outer diameter surface of the axle in a tight fit, so that the cylindrical portion has a brake action of the rear lid, and the rear lid rapidly advances the inner ring. The seal member attached to the rear end portion of the outer ring can be prevented from coming off from the outer peripheral surface of the rear lid so that the seal member is not separated from the rear end side of the inner ring even if it is struck.
また、本発明は、鉄道車両の車軸を支持する転がり軸受の内輪の後端面と、その後面側で車軸に外嵌される後蓋の前端面との間に、これらの両端面に当接させて環状スペーサを介在させ、この環状スペーサの外周側端部に、内輪の後端面と後蓋の前端面との間をシールする環状弾性シール部材を固着した鉄道車両用軸受装置において、前記内輪の後端面と後蓋の前端面との間に介在する前記環状スペーサの内周側端部に、前記車軸の外径面と前記後蓋の内径面との間に嵌挿される円筒部を一体に形成した構成も採用した。 Further, the present invention is configured such that the both end surfaces are brought into contact between the rear end surface of the inner ring of the rolling bearing that supports the axle of the railway vehicle and the front end surface of the rear lid that is fitted on the axle on the rear surface side. In the railway vehicle bearing device, an annular elastic seal member that seals between the rear end surface of the inner ring and the front end surface of the rear lid is fixed to the outer peripheral side end portion of the annular spacer. A cylindrical portion that is fitted between the outer diameter surface of the axle and the inner diameter surface of the rear lid is integrally formed on the inner peripheral side end portion of the annular spacer that is interposed between the rear end surface and the front end surface of the rear lid. The formed structure was also adopted.
すなわち、内輪の後端面と後蓋の前端面との間に介在する環状スペーサの内周側端部に、車軸の外径面と後蓋の内径面との間に嵌挿される円筒部を一体に形成することにより、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが倒れ込まないようにした。 That is, a cylindrical portion that is inserted between the outer diameter surface of the axle and the inner diameter surface of the rear lid is integrated with the inner peripheral side end portion of the annular spacer interposed between the rear end surface of the inner ring and the front end surface of the rear lid. Thus, the annular spacer is prevented from falling down even if the rear lid is struck by intermittent abrupt advancement of the inner ring by stick-slip and the rear cover is detached from the rear end side of the inner ring.
前記環状スペーサの円筒部を、前記車軸の外径面と前記後蓋の内径面とにタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。 By allowing the cylindrical portion of the annular spacer to be tightly fitted to the outer diameter surface of the axle and the inner diameter surface of the rear lid, the cylindrical portion is provided with a brake action of the rear lid, and the rear Even if the lid is struck by a sudden advance of the inner ring, the seal member attached to the rear end portion of the outer ring can be prevented from being detached from the outer peripheral surface of the rear cover.
本発明の鉄道車両用軸受装置は、内輪の後端面と後蓋の前端面との間に、車軸の外径面と後蓋の内径面との間に嵌挿され、後蓋の内径面にタイトフィットに嵌合される円筒部と、この円筒部の前端から外向きに立ち上がり、環状スペーサの前端面に当接させるフランジ部を有するリング状部材を設けたので、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが後蓋の前端面から離脱しないようにし、環状スペーサの倒れ込みを防止することができる。 The railcar bearing device of the present invention is inserted between the rear end surface of the inner ring and the front end surface of the rear cover, between the outer diameter surface of the axle and the inner diameter surface of the rear cover, and is formed on the inner surface of the rear cover. A ring-shaped member with a cylindrical part that fits tightly and a flange part that rises outward from the front end of this cylindrical part and makes contact with the front end surface of the annular spacer is provided. Even if the rear cover is struck by abrupt advance and the rear cover is detached from the rear end side of the inner ring, the annular spacer is prevented from being detached from the front end surface of the rear cover, and the annular spacer can be prevented from falling down.
前記リング状部材の円筒部を、車軸の外径面にもタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。 The cylindrical portion of the ring-shaped member is fitted tightly to the outer diameter surface of the axle so that the cylindrical portion has a brake action of the rear lid. It is possible to prevent the seal member attached to the rear end portion of the outer ring from being detached from the outer peripheral surface of the rear lid, even if it is struck.
また、本発明の鉄道車両用軸受装置は、内輪の後端面と後蓋の前端面との間に介在する環状スペーサの内周側端部に、車軸の外径面と後蓋の内径面との間に嵌挿される円筒部を一体に形成するようにもしたので、スティックスリップによる内輪の間歇的な急前進によって後蓋が叩かれ、後蓋が内輪の後端側から離脱しても、環状スペーサが倒れ込まないようにすることができる。 Further, the bearing device for a railway vehicle of the present invention has an outer diameter surface of the axle and an inner diameter surface of the rear lid at the inner peripheral side end portion of the annular spacer interposed between the rear end surface of the inner ring and the front end surface of the rear lid. Since the cylindrical part to be inserted between the two is integrally formed, the rear cover is hit by intermittent sudden advance of the inner ring by stick slip, and even if the rear cover is detached from the rear end side of the inner ring, The annular spacer can be prevented from falling down.
前記環状スペーサの円筒部を、車軸の外径面と後蓋の内径面とにタイトフィットに嵌合されるようにすることにより、この円筒部に後蓋のブレーキ作用を持たせ、後蓋が内輪の急前進によって叩かれても内輪の後端側から離脱しないようにして、外輪の後端部に装着されたシール部材が後蓋の外周面から外れないようにすることができる。 By causing the cylindrical portion of the annular spacer to be tightly fitted to the outer diameter surface of the axle and the inner diameter surface of the rear lid, the cylindrical portion is provided with a brake action of the rear lid, It is possible to prevent the seal member attached to the rear end portion of the outer ring from being detached from the outer peripheral surface of the rear lid even if the inner ring is struck by a sudden advance.
以下、図面に基づき、本発明の実施形態を説明する。図1および図2は、第1の実施形態を示す。この鉄道車両用軸受装置は、図1に示すように、車軸1を支持する転がり軸受2としての、内輪3と外輪4の間に複列の円錐ころ5が配列された複列円錐ころ軸受と、内輪3の後面側で車軸1の拡径部1aに嵌合固定され、車軸1に圧入される内輪3の軸方向位置を位置決めする後蓋6と、内輪3の前面側で車軸1に外嵌され、転がり軸受2を抜け止めする前蓋7とで基本的に構成されており、転がり軸受2の後面側と前面側とが、それぞれ外輪4の両端部に装着され、後蓋6と前蓋7の外周面に摺接するシール部材8で密封されるようになっている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment. As shown in FIG. 1, this railway vehicle bearing device includes a double-row tapered roller bearing in which double-row
図2に拡大して示すように、前記内輪3の後端面と後蓋6の前端面との間には、これらの両端面に当接する環状スペーサ9が介在し、その外周側端部に環状弾性シール部材9aが固着されるとともに、車軸1の外径面と後蓋6の内径面との間に嵌挿され、これらの外径面と内径面とにタイトフィットに嵌合される円筒部10aと、円筒部10aの前端から外向きに立ち上がり、環状スペーサ9の前端面に当接されるフランジ部10bとを有するリング状部材10が介在している。
As shown in FIG. 2 in an enlarged manner, an annular spacer 9 is provided between the rear end face of the
前記後蓋6の前端面には段差部6aが設けられ、環状スペーサ9の環状弾性シール部材9aは、この段差部6aの外径側で内輪3の後端面と後蓋6の前端面とに当接されている。また、環状スペーサ9の内周側は屈曲段差によって前面側が凹んでおり、この凹んだ環状スペーサ9の内周側前面に、リング状部材10のフランジ部10bが重ねられるように当接されている。
A
したがって、前記車軸1に圧入される内輪3にスティックスリップが生じて、後蓋6が内輪3の間歇的な急前進によって叩かれても、車軸1の外径面と後蓋6の内径面との間にタイトフィットに嵌合された円筒部10aを有するリング状部材10が、環状スペーサ9の後蓋6の前端面からの離脱と倒れ込みを防止するとともに、後蓋6のブレーキ作用をし、後蓋6が内輪3の後端側から離脱しないようにして、外輪4の後端部に装着されたシール部材8の後蓋6の外周面からの外れを防止する。
Therefore, even if stick slip occurs in the
この実施形態では、リング状部材10の円筒部10aを、車軸1の外径面と後蓋6の内径面との両方にタイトフィットに嵌合したが、後蓋6の内径面のみにタイトフィットに嵌合することもでき、この場合は、環状スペーサ9の後蓋6の前端面からの離脱をなくして、その倒れ込みを防止することができる。
In this embodiment, the
図3は、第2の実施形態を示す。この鉄道車両用軸受装置は、基本的な構成は第1の実施形態のものと同じであり、前記別体のリング状部材10を内輪3の後端面と後蓋6の前端面との間に介在させる替りに、前記環状スペーサ9の内周側端部に、車軸1の外径面と後蓋6の内径面との間に嵌挿され、これらの外径面と内径面とにタイトフィットに嵌合される円筒部9bが一体に形成されている点が異なる。この実施形態では、円筒部9bが環状スペーサ9自身の倒れこみを防止するとともに、後蓋6に対するブレーキ作用をし、後蓋6が内輪3の後端側から離脱しないようにして、外輪4の後端部に装着されたシール部材8の後蓋6の外周面からの外れを防止する。
FIG. 3 shows a second embodiment. This bearing device for a railway vehicle has the same basic configuration as that of the first embodiment, and the separate ring-
この実施形態では、車軸1の外径面と後蓋6の内径面との間に嵌挿した環状スペーサ9の円筒部9bを、これらの外径面と内径面とにタイトフィットに嵌合したが、円筒部9bをこれらの外径面と内径面の間に単に嵌挿するのみとしてもよく、この場合は、環状スペーサ9自身の倒れ込みを防止することができる。
In this embodiment, the
上述した各実施形態では、転がり軸受を複列円錐ころ軸受としたが、本発明に係る鉄道車両用軸受装置は、転がり軸受を複列円筒ころ軸受等の他の軸受としたものにも適用することができる。 In each of the embodiments described above, the rolling bearing is a double row tapered roller bearing. However, the rolling stock bearing device according to the present invention is also applied to a rolling bearing having another bearing such as a double row cylindrical roller bearing. be able to.
1 車軸
1a 拡径部
2 転がり軸受
3 内輪
4 外輪
5 円錐ころ
6 後蓋
6a 段差部
7 前蓋
8 シール部材
9 環状スペーサ
9a 環状弾性シール部材
9b 円筒部
10 リング状部材
10a 円筒部
10b フランジ部
DESCRIPTION OF
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DE102016216641A1 (en) | 2015-09-03 | 2017-03-09 | Aktiebolaget Skf | Sealing device for rolling bearing unit |
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