TWI606195B - A roller bearing device, and a backup roller for a rolling mill using the same - Google Patents
A roller bearing device, and a backup roller for a rolling mill using the same Download PDFInfo
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- TWI606195B TWI606195B TW103100806A TW103100806A TWI606195B TW I606195 B TWI606195 B TW I606195B TW 103100806 A TW103100806 A TW 103100806A TW 103100806 A TW103100806 A TW 103100806A TW I606195 B TWI606195 B TW I606195B
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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
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7859—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element
- F16C33/7866—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a further sealing element with sealing lips
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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
- F16C33/726—Sealings with means to vent the interior of the bearing
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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
- F16C19/24—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 radial load mainly
- F16C19/28—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 radial load mainly with two or more rows of rollers
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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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/12—Rolling apparatus, e.g. rolling stands, rolls
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
將2013年1月16日申請之日本專利申請第2013-005367號的所有內容藉由參閱援用於本說明書中。 All of the contents of Japanese Patent Application No. 2013-005367, filed on Jan. 16, 2013, is incorporated herein by reference.
本發明係關於，例如用來支承輥軋機的輥子之支承輥所使用之滾子軸承裝置、以及使用其之輥軋機用支承輥。 The present invention relates to, for example, a roller bearing device used for a backup roller for supporting a roller of a rolling mill, and a backup roller for a rolling mill using the same.
在多段式輥軋機等中，用來支承輥軋機用輥子之支承輥，係具備主軸及複數個滾子軸承裝置。前述滾子軸承裝置，是外嵌固定於該主軸且沿軸向排列。上述滾子軸承裝置，如圖5所示般係由複數列的圓柱滾子軸承所構成，該複數列的圓柱滾子軸承具備有外環101、內環102、複數列的圓柱滾子103以及密封裝置104。前述外環101為旋轉環。前述內環102外嵌固定於前述主軸。前述圓柱滾子103可轉動自如地介設於內外環101,102間。前述密封裝置104將內外環101,102間的環狀開口部予以 密封。密封裝置104具備有環狀的芯環105、環狀的甩油環106以及環狀的密封唇107。前述芯環105固定於外環101。前述甩油環106是固定於內環102，且對置於芯環105之軸向一側。前述密封唇107是從芯環105之軸向一側的端面突出，藉由與甩油環106的端面滑接而將外環101和內環102之間施以密封。 In a multi-stage rolling mill or the like, a backup roll for supporting a roll for a rolling mill is provided with a main shaft and a plurality of roller bearing devices. The roller bearing device is externally fixed to the main shaft and arranged in the axial direction. The roller bearing device is composed of a plurality of cylindrical roller bearings as shown in FIG. 5, and the plurality of cylindrical roller bearings are provided with an outer ring 101, an inner ring 102, a plurality of cylindrical rollers 103, and Sealing device 104. The outer ring 101 is a rotating ring. The inner ring 102 is externally fitted and fixed to the aforementioned main shaft. The cylindrical roller 103 is rotatably disposed between the inner and outer rings 101, 102. The sealing device 104 applies an annular opening between the inner and outer rings 101, 102. seal. The sealing device 104 includes an annular core ring 105, an annular oil slinger 106, and an annular sealing lip 107. The core ring 105 is fixed to the outer ring 101. The slinger 106 is fixed to the inner ring 102 and is disposed on the axial side of the core ring 105. The seal lip 107 protrudes from the axial end surface of the core ring 105, and is sealed between the outer ring 101 and the inner ring 102 by sliding contact with the end surface of the oil slinger 106.
在上述滾子軸承裝置，將混合有空氣之油霧以既定壓力加壓供應給內外環101,102間的空間內，藉此進行該滾子軸承裝置的各部位之潤滑。再者，該滾子軸承裝置構成為，當有油霧供應而使內外環101,102間之空間內的壓力升高時，使密封裝置104之密封唇107的前端稍微離開甩油環106，將內外環101,102間之空間內的壓力往外部空間側釋放而避免該空間內成為既定壓力以上(例如，參照日本特開2002-228007號公報)。 In the above roller bearing device, the oil mist mixed with air is pressurized and supplied to the space between the inner and outer rings 101, 102 at a predetermined pressure, thereby lubricating the respective portions of the roller bearing device. Further, the roller bearing device is configured such that when the oil mist is supplied to increase the pressure in the space between the inner and outer rings 101, 102, the front end of the sealing lip 107 of the sealing device 104 is slightly separated from the oil slinger 106, and the inside and outside are The pressure in the space between the rings 101 and 102 is released to the external space side, and the space is prevented from being equal to or higher than the predetermined pressure (see, for example, Japanese Laid-Open Patent Publication No. 2002-228007).
在上述習知例之滾子軸承裝置，是利用內外環101,102間之空間內的壓力來使密封唇107的前端離開甩油環106，因此水分和塵埃等的異物可能通過該間隙而侵入內外環101,102間的空間。朝前述空間內之異物侵入乃是造成滾子軸承裝置壽命降低之主要原因。再者，內外環101,102間之空間內的壓力釋放，是藉由使密封唇107離開甩油環106來進行。因此，若內外環101,102在軸向發生些微的相對移動而使密封唇107對甩油環106的接觸壓力改變，或無法順利進行密封唇107的離開時，內外環101,102間的空間內之壓力會大幅變動，可能使油霧的供 給量變得不穩定而發生潤滑不良。 In the roller bearing device of the above-described conventional example, the front end of the seal lip 107 is separated from the oil slinger 106 by the pressure in the space between the inner and outer rings 101, 102, so that foreign matter such as moisture and dust may enter the inner and outer rings through the gap. 101,102 spaces. The intrusion of foreign matter into the aforementioned space is the main cause of the decrease in the life of the roller bearing device. Further, the pressure release in the space between the inner and outer rings 101, 102 is performed by leaving the sealing lip 107 away from the oil slinger 106. Therefore, if the inner and outer rings 101, 102 are slightly moved in the axial direction to change the contact pressure of the sealing lip 107 against the oil slinger 106, or the sealing lip 107 cannot be smoothly removed, the pressure in the space between the inner and outer rings 101, 102 Significant changes, may make oil mist supply The amount of supply becomes unstable and poor lubrication occurs.
本發明的目的之一是為了提供一種滾子軸承裝置，其可抑制內外環間的空間內之壓力變動且更有效地抑制前述空間內之異物侵入，並提供使用該滾子軸承裝置之輥軋機用支承輥。 An object of the present invention is to provide a roller bearing device which can suppress a pressure fluctuation in a space between inner and outer rings and more effectively suppress foreign matter intrusion in the space, and provide a rolling mill using the roller bearing device Use a backup roll.
本發明的一態樣的滾子軸承裝置之構成上的特徵，係具備內環、外環、複數個轉動體以及一對的密封裝置，前述內環在外周面具有內環軌道面；前述外環，配置成與前述內環形成同心，在內周面具有與前述內環軌道面相對向之外環軌道面；前述複數個轉動體，是在前述內環軌道面和前述外環軌道面之間配置成可轉動；前述一對的密封裝置，是設置在前述內環及前述外環之軸向兩端，用來封閉由前述內環外周面和前述外環內周面所界定之第1空間；將混合有氣體之霧狀潤滑油加壓供應給前述第1空間內，其特徵在於，前述密封裝置具備有環狀的芯環、環狀的甩油環、第1密封唇、以及第2密封唇，前述環狀的芯環是固定於前述內環及外環之任一方；前述環狀的甩油環，是固定於前述內環及外環之另一方，對置於前述芯環之軸向外側；前述第1密封唇，是突設於前述芯環之軸向外側的側端面，藉由與前述甩油環滑接而將前述第1空間之軸向端部開口予以密封；前述第2密封唇，設置成比前述第1密封唇更靠徑向外側，突設於前述芯環之前述側 端面，藉由與前述甩油環滑接而和前述第1密封唇一起將前述第1空間密封，且在其與前述第1密封唇之間形成第2空間；在前述芯環設有：用來使前述第1空間和前述第2空間之間連通之排氣孔；前述第2密封唇具有壓力控制功能，當前述第1空間內超過既定壓力時會離開前述甩油環，而將前述第1空間內的壓力通過前述排氣孔及前述第2空間往外部空間釋放，藉此維持前述第1密封唇滑接於前述甩油環的狀態。 A roller bearing device according to another aspect of the present invention is characterized by comprising an inner ring, an outer ring, a plurality of rotating bodies, and a pair of sealing devices, wherein the inner ring has an inner ring raceway surface on the outer peripheral surface; The ring is disposed to be concentric with the inner ring, and has an outer circumferential track surface facing the inner ring raceway surface on the inner circumferential surface; the plurality of rotating bodies are on the inner ring raceway surface and the outer ring raceway surface The pair of sealing devices are disposed at both axial ends of the inner ring and the outer ring for closing the first one defined by the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring a space in which a mist-like lubricating oil mixed with a gas is supplied to the first space, wherein the sealing device includes an annular core ring, a ring-shaped oil ring, a first sealing lip, and a first a sealing lip, wherein the annular core ring is fixed to one of the inner ring and the outer ring; the annular oil slinger is fixed to the other of the inner ring and the outer ring, and is opposed to the core ring The axial outer side; the first sealing lip is a protrusion The axial end of the first space is sealed by sliding to the side end surface of the core ring on the axially outer side, and the second sealing lip is provided to be closer to the first sealing lip than the first sealing lip Further on the radially outer side, protruding from the aforementioned side of the aforementioned core ring The end surface is sealed with the oil slinger to seal the first space together with the first sealing lip, and a second space is formed between the end surface and the first sealing lip; and the core ring is provided with: a vent hole that communicates between the first space and the second space; the second seal lip has a pressure control function, and when the first space exceeds a predetermined pressure, the slinger is separated from the slinger ring The pressure in the space is released to the external space through the exhaust hole and the second space, thereby maintaining the state in which the first seal lip is slidably attached to the oil slinger.
1‧‧‧滾子軸承裝置 1‧‧‧Roller bearing unit
2‧‧‧外環構件 2‧‧‧Outer ring members
2a‧‧‧外周面 2a‧‧‧outer surface
2b‧‧‧外環軌道面 2b‧‧‧ outer ring track surface
2c‧‧‧周槽 2c‧‧‧ week slot
2d‧‧‧段差部 2d‧‧‧Departure
3‧‧‧內環構件 3‧‧‧ Inner ring members
3a‧‧‧內環 3a‧‧‧ Inner Ring
3a1‧‧‧內環軌道面 3a1‧‧‧ Inner ring track surface
3b‧‧‧對接部 3b‧‧‧Docking Department
3c‧‧‧供油孔 3c‧‧‧ oil supply hole
4‧‧‧圓柱滾子 4‧‧‧Cylindrical roller
5‧‧‧保持器 5‧‧‧ Keeper
10‧‧‧密封裝置 10‧‧‧ Sealing device
11‧‧‧芯環 11‧‧ ‧ core ring
11a‧‧‧外側端面 11a‧‧‧Outside end face
11b‧‧‧內側端面 11b‧‧‧Inside end face
11c‧‧‧排氣孔 11c‧‧‧ venting holes
12‧‧‧甩油環 12‧‧‧甩油环
12a‧‧‧圓筒部 12a‧‧‧Cylinder
12b‧‧‧凸緣部 12b‧‧‧Flange
12b1‧‧‧內側端面 12b1‧‧‧ inside end face
12c‧‧‧外周面 12c‧‧‧ outer perimeter
13‧‧‧密封構件 13‧‧‧ Sealing members
13a‧‧‧基部 13a‧‧‧ base
13a1‧‧‧狹縫 13a1‧‧‧slit
13b‧‧‧第1密封唇 13b‧‧‧1st sealing lip
13c‧‧‧第2密封唇 13c‧‧‧2nd sealing lip
13d‧‧‧連結部 13d‧‧‧Link Department
15‧‧‧制止環 15‧‧‧Stop ring
101‧‧‧外環 101‧‧‧Outer Ring
102‧‧‧內環 102‧‧‧ Inner Ring
103‧‧‧圓柱滾子 103‧‧‧Cylindrical roller
104‧‧‧密封裝置 104‧‧‧ Sealing device
105‧‧‧芯環 105‧‧‧core ring
106‧‧‧甩油環 106‧‧‧甩油环
107‧‧‧密封唇 107‧‧‧ Sealing lip
S1‧‧‧第1環狀空間 S1‧‧‧1st annular space
S2‧‧‧第2環狀空間 S2‧‧‧2nd annular space
S3‧‧‧外部空間 S3‧‧‧External space
T‧‧‧支承主軸 T‧‧‧Support spindle
以下，參閱附圖對用於實施本發明之形態進行說明，在各附圖中，對於相同或對應之結構附加相同或對應之元件符號並省略說明。 In the following, the embodiments for carrying out the invention will be described with reference to the accompanying drawings, and the same or corresponding components are attached to the same or corresponding components, and the description is omitted.
圖1係顯示本發明的一實施形態的輥軋機之支承輥的剖面圖。 Fig. 1 is a cross-sectional view showing a backup roll of a rolling mill according to an embodiment of the present invention.
圖2係將圖1中的密封裝置放大之局部剖面圖。 Figure 2 is a partial cross-sectional view showing the sealing device of Figure 1 in an enlarged manner.
圖3係將狹縫部分從內側端面側觀察時之外觀圖。 Fig. 3 is an external view of the slit portion as seen from the inner end surface side.
圖4係顯示其他態樣的滾子軸承裝置構造之剖面圖。 Fig. 4 is a cross-sectional view showing the construction of a roller bearing device of another aspect.
圖5係顯示習知的滾子軸承裝置之剖面圖。 Figure 5 is a cross-sectional view showing a conventional roller bearing device.
接著，針對本發明之較佳實施形態，參照附圖作說明。圖1係顯示本發明的一實施形態之輥軋機的支承輥之剖面圖。圖中，支承輥，是與用來將輥軋材施以輥 軋之輥軋機的工作輥、中間輥等(未圖示)接觸從動，而用來支承其等之輥子。支承輥具備有：單數或複數個滾子軸承裝置1、以及將滾子軸承裝置1支承於輥軋機之支承主軸T。 Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a cross-sectional view showing a backup roll of a rolling mill according to an embodiment of the present invention. In the figure, the backup roll is used to apply the rolled material to the roll. The work rolls, intermediate rolls, and the like (not shown) of the rolling mill are brought into contact with the rollers for supporting them. The backup roll is provided with a single or plural roller bearing device 1 and a support spindle T for supporting the roller bearing device 1 to the rolling mill.
在支承主軸T上，將一或複數個滾子軸承裝置1沿著軸向配置，使外環構件2與工作輥等之外周面可轉動地接觸從動，藉此支承前述工作輥等。滾子軸承裝置1具備有：外環構件2、內環構件3、圓柱滾子4、環狀的保持器5、以及一對的密封裝置10。前述外環構件2係構成與前述輥軋機之輥子等接觸而從動之輥子。前述內環構件3是在外環構件2的內周側配置成同心狀。前述圓柱滾子4是可轉動自如地配置在外環構件2及內環構件3間之複數個轉動體。前述保持器5將前述複數個圓柱滾子4保持在圓周方向。前述密封裝置10固定於該滾子軸承裝置1的兩端。 One or a plurality of roller bearing devices 1 are disposed in the axial direction on the support main shaft T, and the outer ring member 2 is rotatably contacted with the outer circumferential surface of the work rolls or the like to support the work rolls and the like. The roller bearing device 1 includes an outer ring member 2, an inner ring member 3, a cylindrical roller 4, an annular retainer 5, and a pair of sealing devices 10. The outer ring member 2 constitutes a roller that comes into contact with a roller or the like of the rolling mill. The inner ring member 3 is concentrically arranged on the inner peripheral side of the outer ring member 2. The cylindrical roller 4 is a plurality of rotating bodies that are rotatably disposed between the outer ring member 2 and the inner ring member 3. The aforementioned retainer 5 holds the plurality of cylindrical rollers 4 in the circumferential direction. The sealing device 10 is fixed to both ends of the roller bearing device 1.
內環構件3是將一對圓筒狀的內環3a沿軸向組合而構成。在內環3a的外周面，形成有供複數個圓柱滾子4轉動之內環軌道面3a1。外環構件2，是其外周面2a與前述輥軋機的輥子等接觸之圓筒狀構件。在外環構件2的內周面，形成有供複數個圓柱滾子4轉動之一對外環軌道面2b，一對外環軌道面2b是與分別形成於一對的內環3a之內環軌道面3a1相對向。複數個圓柱滾子4可轉動自如地配置在一對的內環軌道面3a1及外環軌道面2b間，藉此使外環構件2和內環構件3可相對旋轉自 如。依上述構造，滾子軸承裝置1，藉由在支承主軸T固定內環構件3，將外環構件2支承成相對支承主軸T可旋轉自如。 The inner ring member 3 is configured by combining a pair of cylindrical inner rings 3a in the axial direction. On the outer peripheral surface of the inner ring 3a, an inner ring raceway surface 3a1 for rotating a plurality of cylindrical rollers 4 is formed. The outer ring member 2 is a cylindrical member whose outer peripheral surface 2a is in contact with a roller or the like of the above-described rolling mill. On the inner circumferential surface of the outer ring member 2, one of a plurality of cylindrical rollers 4 is rotated to form an outer ring raceway surface 2b, and a outer ring raceway surface 2b is formed with an inner ring raceway surface formed on a pair of inner rings 3a, respectively. 3a1 is opposite. A plurality of cylindrical rollers 4 are rotatably disposed between the pair of inner ring raceway faces 3a1 and outer ring raceway faces 2b, whereby the outer ring member 2 and the inner ring member 3 are relatively rotatable from each other. Such as. According to the above configuration, the roller bearing device 1 supports the outer ring member 2 so as to be rotatable relative to the support main shaft T by fixing the inner ring member 3 to the support main shaft T.
一對的密封裝置10設置於外環構件2和內環構件3之軸向兩端。一對的密封裝置10，分別固定於由內環軌道面3a1和外環軌道面2b所界定之環狀空間、即第1環狀空間(第1空間)S1之兩端開口，而將兩端開口予以封閉。如此，第1環狀空間S1對外部是密封的。 A pair of sealing devices 10 are provided at both axial ends of the outer ring member 2 and the inner ring member 3. The pair of sealing devices 10 are respectively fixed to the annular space defined by the inner ring raceway surface 3a1 and the outer ring raceway surface 2b, that is, the first annular space (first space) S1 is open at both ends, and both ends are The opening is closed. Thus, the first annular space S1 is sealed to the outside.
在一對的內環3a之相互對接的對接部3b形成有：用來對內外環構件2,3間之第1環狀空間S1內供給油霧之供油孔3c。通過供油孔3c將與空氣等氣體混合後之油霧加壓供應給第1環狀空間S1內。本實施形態之滾子軸承裝置1，藉由將上述油霧加壓供應給第1環狀空間S1內，而進行各部位的潤滑。又為了各部位的潤滑所供給的油霧，也能使用由高壓氣體和油霧所混合而成者，也能使用將油霧本身加壓之高壓化油霧。 An oil supply hole 3c for supplying oil mist to the first annular space S1 between the inner and outer ring members 2, 3 is formed in the butting portion 3b which abuts the pair of inner rings 3a. The oil mist mixed with the gas such as air is pressurized and supplied into the first annular space S1 through the oil supply hole 3c. In the roller bearing device 1 of the present embodiment, the oil mist is pressurized and supplied into the first annular space S1 to lubricate the respective portions. Further, for the oil mist supplied by the lubrication of each part, a high pressure gas and an oil mist may be used, and a high pressure oil mist which pressurizes the oil mist itself may be used.
圖2係將圖1中的密封裝置放大之局部剖面圖。圖中，密封裝置10具備有環狀的芯環11、環狀的甩油環12以及密封構件13。前述芯環11固定於外環構件2。前述甩油環12固定於內環3a(內環構件3)。前述密封構件13固定於芯環11。 Figure 2 is a partial cross-sectional view showing the sealing device of Figure 1 in an enlarged manner. In the figure, the sealing device 10 is provided with an annular core ring 11, an annular oil slinger 12, and a sealing member 13. The aforementioned core ring 11 is fixed to the outer ring member 2. The slinger ring 12 is fixed to the inner ring 3a (the inner ring member 3). The sealing member 13 is fixed to the core ring 11.
甩油環12，以位於芯環11之內環構件3端部側、即軸向外側的方式，與該芯環11對置。甩油環12具有圓筒部12a及凸緣部12b。前述圓筒部12a是外嵌固定 於內環3a外周面之外側端部。前述凸緣部12b形成於圓筒部12a之外側端部。凸緣部12b之外周面12c，設置成與外環構件2之內周面間形成些微間隙，而構成用來防止異物侵入比甩油環12更靠滾子軸承裝置1的內部空間側之迷宮。 The oil slinger 12 is opposed to the core ring 11 so as to be located on the end side of the inner ring member 3 of the core ring 11, that is, the axially outer side. The oil slinger 12 has a cylindrical portion 12a and a flange portion 12b. The cylindrical portion 12a is externally fixed At the outer end portion of the outer peripheral surface of the inner ring 3a. The flange portion 12b is formed at an outer end portion of the cylindrical portion 12a. The outer peripheral surface 12c of the flange portion 12b is provided to form a slight gap with the inner peripheral surface of the outer ring member 2, and is configured to prevent foreign matter from entering the labyrinth of the inner space side of the roller bearing device 1 than the oil slinger 12. .
芯環11之外周緣部，被挾持在制止環15和形成於外環構件2的內周面之段差部2d間，該制止環15嵌入外環構件2之內周面上所形成的周槽2c。藉此將芯環11在外環構件2的內周面固定成可一體旋轉。 The outer peripheral portion of the core ring 11 is held between the restraining ring 15 and the step portion 2d formed on the inner peripheral surface of the outer ring member 2, and the retaining ring 15 is fitted into the circumferential groove formed on the inner peripheral surface of the outer ring member 2. 2c. Thereby, the core ring 11 is fixed to the inner peripheral surface of the outer ring member 2 so as to be rotatable integrally.
密封構件13，是使用丁腈橡膠等的彈性材經由硫化黏著固定於芯環11的構件。密封構件13具有基部13a及環狀的第1密封唇13b。前述基部13a是沿著芯環11之朝軸向內側的內側端面11b。前述第1密封唇13b突設於芯環11之外側端面11a，而與凸緣部12b之內側端面12b1滑接。密封構件13進一步具有環狀的第2密封唇13c及連結部13d。前述第2密封唇13c是在第1密封唇13b之徑向外側設置成同心狀。前述連結部13d是沿著芯環11之朝軸向外側的外側端面11a而設，用來連結第1密封唇13b之基端部和第2密封唇13c的基端部。 The sealing member 13 is a member that is fixed to the core ring 11 by vulcanization using an elastic material such as nitrile rubber. The sealing member 13 has a base portion 13a and an annular first sealing lip 13b. The base portion 13a is an inner end surface 11b along the inner side in the axial direction of the core ring 11. The first seal lip 13b is protruded from the outer end surface 11a of the core ring 11, and is slidably contacted with the inner end surface 12b1 of the flange portion 12b. The sealing member 13 further has an annular second sealing lip 13c and a coupling portion 13d. The second seal lip 13c is concentrically formed on the radially outer side of the first seal lip 13b. The connecting portion 13d is provided along the outer end surface 11a of the core ring 11 in the axially outer direction, and is configured to connect the base end portion of the first seal lip 13b and the base end portion of the second seal lip 13c.
密封構件13所具備之第1密封唇13b、第2密封唇13c、基部13a等，如上述般經由硫化黏著而形成為一體。如此，相較於將各部位個別形成的情況，各部位的形成更容易。 The first seal lip 13b, the second seal lip 13c, the base portion 13a, and the like provided in the sealing member 13 are integrally formed by vulcanization and adhesion as described above. Thus, the formation of each part is easier than when each part is formed individually.
基部13a形成為，從芯環11的內側端面11b 包覆芯環11的外周面。基部13a介在芯環11之外周緣部和外環構件2的段差部2d之間，藉此將外環構件2和芯環11的外周緣部間予以密封。 The base portion 13a is formed from the inner end surface 11b of the core ring 11 The outer peripheral surface of the core ring 11 is covered. The base portion 13a is interposed between the outer peripheral edge portion of the core ring 11 and the step portion 2d of the outer ring member 2, thereby sealing the outer ring member 2 and the outer peripheral edge portion of the core ring 11.
第1密封唇13b，是從芯環11之外側端面11a，隨著朝軸向甩油環12側而往徑向外側延伸。密封唇13b的前端與凸緣部12b的內側端面12b1滑接，可容許外環構件2和內環構件3間之相對旋轉並將第1環狀空間S1之端部開口予以密封。亦即，第1環狀空間S1是由內環構件3之外周面、外環構件2之內周面、及設置於軸向兩端之一對的第1密封唇13b所區隔出。 The first seal lip 13b extends radially outward from the outer end surface 11a of the core ring 11 as it goes toward the axial oil ring 12 side. The front end of the seal lip 13b is slidably contacted with the inner end surface 12b1 of the flange portion 12b, and allows relative rotation between the outer ring member 2 and the inner ring member 3 to seal the end opening of the first annular space S1. In other words, the first annular space S1 is partitioned by the outer circumferential surface of the inner ring member 3, the inner circumferential surface of the outer ring member 2, and the first sealing lip 13b provided at one of the axial ends.
第2密封唇13c，與第1密封唇13b同樣地是突設於芯環11之外側端面11a而與凸緣部12b之內側端面12b1滑接，藉此和第1密封唇13b一起將第1環狀空間S1予以密封。第2密封唇13c是在第1密封唇13b之徑向外側設置成同心狀，藉此設置在比第1密封唇更靠外部空間S3側。 Similarly to the first seal lip 13b, the second seal lip 13c is protruded from the outer end surface 11a of the core ring 11 and is slidably coupled to the inner end surface 12b1 of the flange portion 12b, thereby providing the first seal lip 13b together with the first seal lip 13b. The annular space S1 is sealed. The second seal lip 13c is concentrically arranged on the radially outer side of the first seal lip 13b, and is provided on the outer space S3 side of the first seal lip.
此外，藉由在第1密封唇13b之徑向外側呈同心狀地設置第2密封唇13c，而在其與該第1密封唇13b之間形成第2環狀空間(第2空間)S2。如此，第2環狀空間S2是由第1密封唇13b、第2密封唇13c、設有密封唇13b,13c之芯環11、及與密封唇13b,13c滑接之甩油環12所區隔出。第1密封唇13b及第2密封唇13c，是以在第1環狀空間S1和外部空間S3之間介入第2環狀空間S2的方式，將該第1環狀空間S1予以密封。 Further, the second seal lip 13c is provided concentrically on the radially outer side of the first seal lip 13b, and a second annular space (second space) S2 is formed between the second seal lip 13c and the first seal lip 13b. In this manner, the second annular space S2 is composed of the first seal lip 13b, the second seal lip 13c, the core ring 11 provided with the seal lips 13b, 13c, and the oil slinger 12 which is slidably connected to the seal lips 13b, 13c. Separated. The first seal lip 13b and the second seal lip 13c seal the first annular space S1 so that the second annular space S2 is interposed between the first annular space S1 and the external space S3.
此外，在芯環11設有排氣孔11c，該排氣孔11c是使第1環狀空間S1和第2環狀空間S2之間連通而將第1環狀空間S1內的壓力往第2環狀空間S2釋放。該排氣孔11c形成為剖面圓筒狀且在厚度方向貫穿芯環11，又進一步貫穿連結部13d。此外，排氣孔11c是沿著芯環11之圓周方向設有複數個。 Further, the core ring 11 is provided with a vent hole 11c that communicates between the first annular space S1 and the second annular space S2 to bring the pressure in the first annular space S1 to the second The annular space S2 is released. The exhaust hole 11c is formed in a cylindrical shape in cross section, penetrates the core ring 11 in the thickness direction, and further penetrates the connecting portion 13d. Further, the vent hole 11c is provided in plural in the circumferential direction of the core ring 11.
排氣孔11c之芯環11的內側端面11b側是藉由密封構件13的基部13a覆蓋。換言之，密封構件13的基部13a是構成堵塞排氣孔11c之蓋部。 The side of the inner end surface 11b of the core ring 11 of the vent hole 11c is covered by the base portion 13a of the sealing member 13. In other words, the base portion 13a of the sealing member 13 is a cover portion constituting the clogging vent hole 11c.
在基部13a之與排氣孔11c對應的部分形成有狹縫13a1。 A slit 13a1 is formed in a portion of the base portion 13a corresponding to the exhaust hole 11c.
圖3是將狹縫13a1部分從內側端面11b側觀察時之外觀圖。同時參照圖1，狹縫13a1是沿著與徑向正交的方向形成為直線狀。狹縫13a1是遍及整個厚度方向將基部13a切開而形成，當第1環狀空間S1內的壓力超過既定壓力P1時會打開。更具體的說，當第1環狀空間S1的壓力高於既定壓力P1且比第2環狀空間S2更高時，狹縫13a1會打開，將第1環狀空間S1的壓力通過狹縫13a1而往第2環狀空間S2釋放。另一方面，水分、塵埃等的異物，難以通過對應於第1環狀空間S1的壓力而進行開閉之狹縫13a1。如此，藉由在作為蓋部之基部13a設置狹縫13a1，可容許第1環狀空間S1內的壓力往第2環狀空間S2側釋放，並能抑制異物從排氣孔11c朝第1環狀空間S1內侵入。 Fig. 3 is an external view of the slit 13a1 as viewed from the side of the inner end surface 11b. Referring also to Fig. 1, the slit 13a1 is formed in a straight line along a direction orthogonal to the radial direction. The slit 13a1 is formed by cutting the base portion 13a over the entire thickness direction, and is opened when the pressure in the first annular space S1 exceeds the predetermined pressure P1. More specifically, when the pressure of the first annular space S1 is higher than the predetermined pressure P1 and higher than the second annular space S2, the slit 13a1 is opened, and the pressure of the first annular space S1 is passed through the slit 13a1. The second annular space S2 is released. On the other hand, foreign matter such as moisture or dust is difficult to open and close by the slit 13a1 corresponding to the pressure of the first annular space S1. By providing the slit 13a1 in the base portion 13a as the lid portion, the pressure in the first annular space S1 can be released to the second annular space S2 side, and the foreign matter can be prevented from the exhaust hole 11c toward the first ring. Intrusion in the space S1.
又第1密封唇13b之接觸壓力設定成，縱使第1環狀空間S1的壓力超過使狹縫13a1打開的壓力、即既定壓力P1的情況，也不會從甩油環12離開的程度。如此，縱使第1環狀空間S1內的壓力超過既定壓力P1，第1密封唇13b仍能維持與甩油環12滑接的狀態。 Further, the contact pressure of the first seal lip 13b is set such that the pressure of the first annular space S1 does not deviate from the oil slinger 12 even when the pressure of the slit 13a1 is increased, that is, the predetermined pressure P1. As described above, even when the pressure in the first annular space S1 exceeds the predetermined pressure P1, the first seal lip 13b can maintain the state in which it is slidably connected to the oil slinger 12.
當第1環狀空間S1內的壓力超過既定壓力P1而通過排氣孔11c使第1環狀空間S1的壓力往第2環狀空間S2釋放時，第2環狀空間S2的壓力上昇。當藉由從第1環狀空間S1釋放的壓力而使第2環狀空間S2內的壓力超過既定壓力P2時，利用該壓力使第2密封唇13c彈性變形而離開甩油環12後，將第2環狀空間S2內的壓力往外部空間S3側釋放。 When the pressure in the first annular space S1 exceeds the predetermined pressure P1 and the pressure in the first annular space S1 is released to the second annular space S2 through the exhaust hole 11c, the pressure in the second annular space S2 rises. When the pressure in the second annular space S2 exceeds the predetermined pressure P2 by the pressure released from the first annular space S1, the second seal lip 13c is elastically deformed by the pressure and separated from the oil slinger 12, and then The pressure in the second annular space S2 is released to the external space S3 side.
此外，如後述般，將各部位設定成既定壓力P1為既定壓力P2以上。如此，只要第1環狀空間S1的壓力往第2環狀空間S2釋放的話，第2環狀空間S2就會成為既定壓力P2以上，而使第2密封唇13c離開甩油環12。換言之，第2密封唇13c具有壓力控制功能，當第1環狀空間S1內的壓力超過既定壓力P1時會離開甩油環12，而使第1環狀空間S1內的壓力通過排氣孔11c及第2環狀空間S2往外部空間S3釋放。 Further, as will be described later, each part is set such that the predetermined pressure P1 is equal to or higher than the predetermined pressure P2. When the pressure of the first annular space S1 is released to the second annular space S2, the second annular space S2 is equal to or higher than the predetermined pressure P2, and the second sealing lip 13c is separated from the oil slinger 12. In other words, the second seal lip 13c has a pressure control function, and when the pressure in the first annular space S1 exceeds the predetermined pressure P1, it leaves the oil slinger 12, and the pressure in the first annular space S1 passes through the vent hole 11c. The second annular space S2 is released to the external space S3.
依據上述構造之滾子軸承裝置1，當第1環狀空間S1內超過既定壓力P1時，第2密封唇13c會離開甩油環12而使第1環狀空間S1內的壓力通過排氣孔11c及第2環狀空間S2往外部空間S3釋放。如此，能將第1環 狀空間S1內的壓力往外部空間S3側釋放，並維持使第1密封唇13b與甩油環12滑接的狀態。亦即，上述滾子軸承裝置1構成為，將第1環狀空間S1內的壓力通過比第1密封唇13b更靠外部空間S3側、即第2環狀空間S2而釋放。如此，使第2密封唇13c主要發揮：用來調整第1環狀空間S1內、及第2環狀空間S2內的壓力之排氣閥功能(壓力控制功能)，使第1密封唇13b主要發揮：讓內外環構件2,3間的密封性提高之功能。 According to the roller bearing device 1 of the above configuration, when the first annular space S1 exceeds the predetermined pressure P1, the second seal lip 13c leaves the oil slinger 12 and the pressure in the first annular space S1 passes through the vent hole. The 11c and the second annular space S2 are released to the external space S3. So, the first ring can be The pressure in the space S1 is released to the external space S3 side, and the state in which the first seal lip 13b and the oil slinger 12 are slidably maintained is maintained. In other words, the roller bearing device 1 is configured to release the pressure in the first annular space S1 through the second annular space S2 on the side of the external space S3 than the first sealing lip 13b. In this way, the second seal lip 13c mainly functions as an exhaust valve function (pressure control function) for adjusting the pressure in the first annular space S1 and the second annular space S2, and the first seal lip 13b is mainly used. It is a function of improving the sealing property between the inner and outer ring members 2 and 3.
如此，可將第2密封唇13c對甩油環12的接觸壓力調整成能抑制第1環狀空間S1內的壓力變動。可將第1密封唇13b的接觸壓力調整成能提昇對甩油環12的密封性。結果，可抑制第1環狀空間S1內的壓力變動並提昇密封性，而能更有效地抑制第1環狀空間S1內之異物侵入。 In this manner, the contact pressure of the second seal lip 13c with respect to the oil slinger 12 can be adjusted to suppress the pressure fluctuation in the first annular space S1. The contact pressure of the first seal lip 13b can be adjusted to improve the sealing property to the oil slinger 12. As a result, it is possible to suppress the pressure fluctuation in the first annular space S1 and improve the sealing property, and it is possible to more effectively suppress the intrusion of foreign matter in the first annular space S1.
在本實施形態，第1環狀空間S1之既定壓力P1為狹縫13a1的釋放壓力，第2環狀空間S2之既定壓力P2為第2密封唇13c的釋放壓力。設外部空間S3的壓力為P3時，以儘可能滿足下式的方式，來調整第1密封唇13b及第2密封唇13c分別對甩油環12的接觸壓力、狹縫13a1之尺寸及形狀。 In the present embodiment, the predetermined pressure P1 of the first annular space S1 is the release pressure of the slit 13a1, and the predetermined pressure P2 of the second annular space S2 is the release pressure of the second seal lip 13c. When the pressure of the external space S3 is P3, the contact pressure of the first seal lip 13b and the second seal lip 13c with respect to the oil slinger 12 and the size and shape of the slit 13a1 are adjusted so as to satisfy the following equation as much as possible.
P1≧P2>P3 P1≧P2>P3
狹縫13a1的釋放壓力、即既定壓力P1，除了狹縫13a1的形狀等之設定以外，是依油霧供給壓力、第1密封唇13b對甩油環12的接觸壓力等而決定。此外， 第1密封唇13b不須進行壓力的釋放。因此，相較於上述習知例之必須進行壓力釋放的情況，第1密封唇13b對甩油環12之接觸壓力設定成能獲得更高的密封性。 The release pressure of the slit 13a1, that is, the predetermined pressure P1, is determined in accordance with the oil mist supply pressure, the contact pressure of the first seal lip 13b with respect to the oil slinger 12, and the like, in addition to the shape of the slit 13a1. In addition, The first sealing lip 13b does not need to be released from pressure. Therefore, the contact pressure of the first seal lip 13b with respect to the oil slinger 12 is set to obtain a higher sealing property than when the pressure release is necessary in the above-described conventional example.
此外，第2密封唇13c，是形成為使既定壓力P2滿足上式，且設定成縱使內環構件3和外環構件2沿軸向相對移動仍能維持上述壓力關係之形狀、接觸壓力。 In addition, the second seal lip 13c is formed such that the predetermined pressure P2 satisfies the above formula and is set such that the inner ring member 3 and the outer ring member 2 can maintain the above-described pressure relationship even when the inner ring member 3 and the outer ring member 2 are relatively moved in the axial direction.
更具體的說，在本實施形態，若以大氣壓、即外部空間S3的壓力P3為基準壓力，以既定壓力P1成為+10~20kPa且既定壓力P2成為+5~10kPa的方式設定各部位。 More specifically, in the present embodiment, the atmospheric pressure, that is, the pressure P3 of the external space S3 is used as the reference pressure, and the respective portions are set such that the predetermined pressure P1 is +10 to 20 kPa and the predetermined pressure P2 is +5 to 10 kPa.
此外，在本實施形態，排氣孔11c是與第1密封唇13b和第2密封唇13c間所形成之第2環狀空間S2連通。如此，利用第2密封唇13c可抑制排氣孔11c附近之異物侵入。縱使萬一在第2環狀空間S2有異物侵入，由於從第2密封唇13c的前端到排氣孔11c之間在軸向有一定程度的距離，通過第2密封唇13c的前端之前述異物不致馬上接近排氣孔11c。結果，可抑制從排氣孔11c往第1環狀空間S1內之異物侵入。假使就算有異物到達排氣孔11c附近，依上述構造，藉由設有狹縫13a1之作為蓋部的基部13a，可容許第1環狀空間S1內的壓力釋放並抑制從排氣孔11c往第1環狀空間S1內之異物侵入。 Further, in the present embodiment, the exhaust hole 11c communicates with the second annular space S2 formed between the first seal lip 13b and the second seal lip 13c. As described above, the entry of foreign matter in the vicinity of the vent hole 11c can be suppressed by the second seal lip 13c. Even if foreign matter intrudes in the second annular space S2, the foreign matter passes through the tip end of the second seal lip 13c because there is a certain distance in the axial direction from the distal end of the second seal lip 13c to the exhaust hole 11c. The vent hole 11c is not immediately approached. As a result, entry of foreign matter into the first annular space S1 from the exhaust hole 11c can be suppressed. In the above configuration, even if a foreign matter reaches the vicinity of the vent hole 11c, by providing the base portion 13a as the lid portion of the slit 13a1, the pressure in the first annular space S1 can be released and the vent hole 11c can be suppressed from being released. Foreign matter in the first annular space S1 intrudes.
又本發明並不限定於上述各實施形態。在上述實施形態雖例示排氣孔11c形成為剖面圓筒狀的情況， 但其剖面形狀也能適宜變更為剖面四角狀、橢圓形狀等。此外，在上述實施形態，雖顯示密封構件13的基部13a發揮堵塞排氣孔11c之蓋部的功能的情況，但也能成為不具備該蓋部的構造。但在此情況，第1環狀空間S1和第2環狀空間S2成為大致相同的壓力，當第1環狀空間S1的壓力超過第2密封唇13c的釋放壓力、即既定壓力P2時，第2密封唇13c會離開甩油環12，而使第1環狀空間S1內的壓力通過排氣孔11c及第2環狀空間S2往外部空間S3釋放。 Further, the present invention is not limited to the above embodiments. In the above embodiment, the exhaust hole 11c is formed in a cylindrical shape in cross section. However, the cross-sectional shape can be appropriately changed to a quadrangular shape or an elliptical shape. Further, in the above-described embodiment, the base portion 13a of the sealing member 13 is configured to function to block the lid portion of the vent hole 11c, but the structure may not be provided. However, in this case, the first annular space S1 and the second annular space S2 have substantially the same pressure, and when the pressure of the first annular space S1 exceeds the release pressure of the second sealing lip 13c, that is, the predetermined pressure P2, 2 The seal lip 13c is separated from the oil slinger 12, and the pressure in the first annular space S1 is released to the external space S3 through the vent hole 11c and the second annular space S2.
此外，在上述實施形態，雖顯示基部13a之狹縫13a1形成為直線狀的情況，但例如形成為讓2條狹縫交叉亦可，形成為將多數條的狹縫13a1並排亦可。再者，也能適宜調整狹縫13a1的厚度。 Further, in the above-described embodiment, the slit 13a1 of the base portion 13a is formed in a linear shape. For example, the slits 13a1 may be formed so as to intersect the slits 13a1. Further, the thickness of the slit 13a1 can be appropriately adjusted.
此外，在上述實施形態，雖顯示僅在芯環11之內側端面11b側使用基部13a作為蓋部的情況，但例如圖4所示般，在芯環11的外側端面11a側也設置形成有狹縫13a1之蓋部亦可。在此情況，外側端面11a側之蓋部是由用來連結第1密封唇13b和第2密封唇13c之連結部13d所構成。如此般，藉由在芯環11的兩端面11a,11b設置蓋部，能更有效地抑制第1環狀空間S1內之異物侵入。 Further, in the above-described embodiment, the base portion 13a is used as the lid portion only on the inner end surface 11b side of the core ring 11, but as shown in Fig. 4, for example, the outer end surface 11a side of the core ring 11 is also formed to have a narrow shape. The cover of the slit 13a1 may also be used. In this case, the lid portion on the side of the outer end surface 11a is constituted by the joint portion 13d for connecting the first seal lip 13b and the second seal lip 13c. In this manner, by providing the lid portions on the both end faces 11a and 11b of the core ring 11, it is possible to more effectively suppress the intrusion of foreign matter in the first annular space S1.
依據本發明的滾子軸承裝置以及使用其之輥軋機用支承輥，可抑制內外環間的空間內之壓力變動並更有效地抑制前述空間內之異物侵入。 According to the roller bearing device of the present invention and the backup roller for the rolling mill using the same, it is possible to suppress the pressure fluctuation in the space between the inner and outer rings and to more effectively suppress the intrusion of foreign matter in the space.
1‧‧‧滾子軸承裝置 1‧‧‧Roller bearing unit
2‧‧‧外環構件 2‧‧‧Outer ring members
2c‧‧‧周槽 2c‧‧‧ week slot
2d‧‧‧段差部 2d‧‧‧Departure
3‧‧‧內環構件 3‧‧‧ Inner ring members
3a‧‧‧內環 3a‧‧‧ Inner Ring
4‧‧‧圓柱滾子 4‧‧‧Cylindrical roller
10‧‧‧密封裝置 10‧‧‧ Sealing device
11‧‧‧芯環 11‧‧ ‧ core ring
11a‧‧‧外側端面 11a‧‧‧Outside end face
11b‧‧‧內側端面 11b‧‧‧Inside end face
11c‧‧‧排氣孔 11c‧‧‧ venting holes
12‧‧‧甩油環 12‧‧‧甩油环
12a‧‧‧圓筒部 12a‧‧‧Cylinder
12b‧‧‧凸緣部 12b‧‧‧Flange
12b1‧‧‧內側端面 12b1‧‧‧ inside end face
12c‧‧‧外周面 12c‧‧‧ outer perimeter
13‧‧‧密封構件 13‧‧‧ Sealing members
13a‧‧‧基部 13a‧‧‧ base
13a1‧‧‧狹縫 13a1‧‧‧slit
13b‧‧‧第1密封唇 13b‧‧‧1st sealing lip
13c‧‧‧第2密封唇 13c‧‧‧2nd sealing lip
13d‧‧‧連結部 13d‧‧‧Link Department
15‧‧‧制止環 15‧‧‧Stop ring
S1‧‧‧第1環狀空間 S1‧‧‧1st annular space
S2‧‧‧第2環狀空間 S2‧‧‧2nd annular space
S3‧‧‧外部空間 S3‧‧‧External space
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013005367A JP6070202B2 (en) | 2013-01-16 | 2013-01-16 | Rolling bearing device and rolling roll backup roll using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201437505A TW201437505A (en) | 2014-10-01 |
| TWI606195B true TWI606195B (en) | 2017-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| TW103100806A TWI606195B (en) | 2013-01-16 | 2014-01-09 | A roller bearing device, and a backup roller for a rolling mill using the same |
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| Country | Link |
|---|---|
| JP (1) | JP6070202B2 (en) |
| KR (1) | KR102153439B1 (en) |
| CN (1) | CN103925297B (en) |
| TW (1) | TWI606195B (en) |
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| TWI793205B (en) * | 2017-10-30 | 2023-02-21 | 日商納博特斯克股份有限公司 | Devices with sealing mechanism |
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| WO2017082391A1 (en) * | 2015-11-12 | 2017-05-18 | Ntn株式会社 | Rolling bearing unit |
| DE102015224418A1 (en) * | 2015-12-07 | 2017-06-08 | Schaeffler Technologies AG & Co. KG | Seal with protective / centrifugal and sealing washer for sealing multi-row roller bearings for rolling mill stands |
| DE102016205181B4 (en) | 2016-03-30 | 2018-06-07 | Schaeffler Technologies AG & Co. KG | Sealing arrangement of a wheel bearing |
| US10661326B2 (en) * | 2017-10-14 | 2020-05-26 | Inno-Spin LLC | Roll-forming methods for manufacturing roller bearing seal case |
| CN109958719B (en) * | 2017-12-26 | 2022-07-22 | 舍弗勒技术股份两合公司 | Bearing with contact type sealing structure |
| CN108980212A (en) * | 2018-09-26 | 2018-12-11 | 天津包博特密封科技有限公司 | A kind of dust-proof grease proofing sealing ring for traction machine bearing |
| CN112460261A (en) * | 2020-11-05 | 2021-03-09 | 人本股份有限公司 | Sealing structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20140092765A (en) | 2014-07-24 |
| CN103925297B (en) | 2018-10-26 |
| TW201437505A (en) | 2014-10-01 |
| KR102153439B1 (en) | 2020-09-08 |
| CN103925297A (en) | 2014-07-16 |
| JP6070202B2 (en) | 2017-02-01 |
| JP2014137090A (en) | 2014-07-28 |
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