JPH0594531U - Rolling bearing - Google Patents
Rolling bearingInfo
- Publication number
- JPH0594531U JPH0594531U JP034870U JP3487092U JPH0594531U JP H0594531 U JPH0594531 U JP H0594531U JP 034870 U JP034870 U JP 034870U JP 3487092 U JP3487092 U JP 3487092U JP H0594531 U JPH0594531 U JP H0594531U
- Authority
- JP
- Japan
- Prior art keywords
- grease
- inner ring
- plastic
- grease pocket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
- F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6677—Details of supply of the liquid to the bearing, e.g. passages or nozzles from radial inside, e.g. via a passage through the shaft and/or inner ring
-
- 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
- F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
-
- 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
-
- 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
- F16C19/36—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 a single row of rollers
- F16C19/364—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 a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- 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
-
- 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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
- F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
- F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
(57)【要約】
【目的】 軸受の使用条件に合わせた潤滑剤の流出量
を容易に設定することができ、かつ、長時間安定して給
脂させることができる潤滑構造を備えた転がり軸受を提
供する。
【構成】 軸受の内輪（２）の一部にグリ−スポケッ
ト（５） とグリ−スポケット（５）から軌道面（2a）
に連通する連通孔（６）とを設け、グリ−スポケット
（５）にプラスチックグリ−ス（７）を嵌合させた 。
(57) [Abstract] [Purpose] A rolling bearing with a lubrication structure that allows the amount of lubricant outflow to be set easily according to the operating conditions of the bearing and allows stable lubrication for a long time. I will provide a. [Constitution] Part of the inner ring (2) of the bearing, the grease pocket (5) and the raceway (2a) from the grease pocket (5)
And a communication hole (6) communicating with the plastic pocket (5) was fitted in the grease pocket (5).
Description
【０００１】[0001]
本考案は、転がり軸受の潤滑長寿命化対策に関する。 The present invention relates to measures for extending the lubrication life of rolling bearings.
【０００２】[0002]
転がり軸受は、通常、グリ−ス潤滑方式が多く採用されている。グリ−ス潤滑 方式として、例えば、軸受の内輪又は間座の一部にグリ−スポケットを設け、グ リ−スポケットから微小な流路で軌道面に給脂するようにしたものがある。この 場合、潤滑剤の流出量は、主に微小流路の大きさで決定される。 For the rolling bearing, a grease lubrication method is usually adopted in many cases. As a grease lubrication system, there is, for example, one in which a grease pocket is provided in a part of the inner ring or spacer of the bearing, and the raceway is lubricated to the raceway surface through a minute flow path from the grease pocket. In this case, the outflow amount of the lubricant is mainly determined by the size of the minute flow path.
【０００３】[0003]
ところが、従来の微小流路の大きさで絞る給脂方式は、軸受の使用条件に合わ せたいく通りもの微小流路が必要で製作上の管理や、検査に工数がかかるきらい がある。特に、円筒ころ軸受等に適用した場合、グリ−スポケットや微小流路の 構造が複雑になりがちであった。 However, the conventional greasing method that narrows down the size of the micro-channels requires many micro-channels that match the operating conditions of the bearing, and this tends to require man-hours for manufacturing control and inspection. In particular, when applied to a cylindrical roller bearing or the like, the structure of the grease pocket or the minute flow path tends to be complicated.
【０００４】 そこで、本考案の目的は、軸受の使用条件に合わせた潤滑剤の流出量を容易に 設定することができ、かつ、長時間安定して給脂させることができる潤滑構造を 備えた転がり軸受を提供することにある。Therefore, an object of the present invention is to provide a lubricating structure capable of easily setting the outflow amount of the lubricant according to the usage conditions of the bearing and stably supplying oil for a long time. It is to provide a rolling bearing.
【０００５】[0005]
本考案の転がり軸受は、内輪回転型の転がり軸受において、軸受の内輪又は間 座の一部にグリ−スポケットとグリ−スポケットから軌道面に連通する連通孔と を設け、グリ−スポケットにプラスチックグリ−スを充填させたことを特徴とす る。 The rolling bearing of the present invention is an inner ring rotating type rolling bearing, wherein a grease pocket and a communication hole communicating from the grease pocket to the raceway surface are provided in a part of the inner ring or spacer of the bearing. It is characterized by being filled with plastic grease.
【０００６】[0006]
プラスチックグリ−スは、その組成割合（潤滑グリ−スとプラスチックの割合 、グリ−スの基油と増稠剤の割合）で基油の含油率を調整できる。 With regard to the plastic grease, the oil content of the base oil can be adjusted by the composition ratio (ratio of lubricating grease and plastic, ratio of grease base oil and thickener).
【０００７】 プラスチックグリ−スからの基油の分離は、遠心力によって生じ、その分離の し易さは、プラスチックグリ−スの組成で調整できる。例えば、遠心分離法によ ると図４の通り遠心力と組成で異なっている。Separation of the base oil from the plastic grease is caused by centrifugal force, and the ease of separation can be adjusted by the composition of the plastic grease. For example, according to the centrifugal separation method, the centrifugal force and the composition are different as shown in FIG.
【０００８】 プラスチックグリ−スから遠心力により滲み出した基油は、連通孔を通って軌 道面へ達し、軸受内部を潤滑する。これにより、グリ−スポケットからの基油の 滲み出しの調整を連通孔の絞り作用で行なわせる必要がない。また、軸受の使用 条件に合わせて最適なプラスチックグリ−スの組成が選択できる。The base oil exuded by the centrifugal force from the plastic grease reaches the track surface through the communication hole and lubricates the inside of the bearing. As a result, it is not necessary to adjust the seepage of the base oil from the grease pocket by the throttling action of the communication hole. Also, the optimum composition of plastic grease can be selected according to the operating conditions of the bearing.
【０００９】[0009]
以下、本考案の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
【００１０】 図１は、複列円筒ころ軸受に本考案を適用したもので、（１）は一体型の外輪 、（２）は複列の内輪、（３）（３）は円筒ころ、（４）は保持器、（５）はグ リ−スポケット、（６）は連通孔、（７）はプラスチックグリ−スを示している 。この場合、グリ−スポケット（５）は、内輪（２）の内径面中央に断面矩形の 環状溝として形成している。プラスチックグリ−ス（７）は、例えば、予め断面 矩形環状として形成され、２体の分離型としてグリ−スポケット（５）に嵌合さ せている。プラスチックグリ−ス（７）を２体の分離型としてあるのは、組み込 みの際の便宜を考えると好ましいからである。連通孔（６）は、グリ−スポケッ ト（５）から内輪（２）の軌道面（2a）（2a）に連通している。特に、内輪（２ ）の２列の軌道面（2a）（2a）への連通孔（６）の開口位置は、円筒ころ（３） （３）の転動に悪影響を及ぼさないようにするため、２列の軌道面（2a）（2a） の両端と両側の鍔面（2b）（2b）とのコ−ナ−部に存在するぬすみ部（2c）（2c ）を利用した方が好ましい。連通孔（６）の形成個数は、円周方向に複数個等間 隔又は適宜の間隔で形成される。FIG. 1 shows a double-row cylindrical roller bearing to which the present invention is applied. (1) is an integral outer ring, (2) is a double-row inner ring, (3) and (3) are cylindrical rollers, 4) is a retainer, (5) is a grease pocket, (6) is a communicating hole, and (7) is a plastic grease. In this case, the grease pocket (5) is formed in the center of the inner diameter surface of the inner ring (2) as an annular groove having a rectangular cross section. The plastic grease (7) is, for example, formed in advance in a rectangular ring shape in cross section, and is fitted into the grease pocket (5) as a two-piece separated type. The reason why the plastic grease (7) is of the two-separated type is preferable in consideration of the convenience of assembling. The communication hole (6) communicates with the raceway surface (2a) (2a) of the inner ring (2) from the grease pocket (5). In particular, the opening position of the communication hole (6) to the two rows of raceway surfaces (2a) (2a) of the inner ring (2) should not adversely affect the rolling of the cylindrical rollers (3) (3). It is preferable to use the recessed portions (2c) (2c) existing at the corners of both ends of the two rows of raceway surfaces (2a) (2a) and the flange surfaces (2b) (2b) on both sides. The communication holes (6) are formed in the circumferential direction at equal intervals or at appropriate intervals.
【００１１】 図２の（ａ）（ｂ）は、外輪（１）と内輪（２）との間に単列で円筒ころ（３ ）を保持器（４）を介して円周等配位置に配置した単列円筒ころ軸受に本考案を 適用したもので、先ず、図２の（ａ）は、グリ−スポケット（５）を内輪（２） の内径面中央に断面矩形の環状溝として形成し、プラスチックグリ−ス（７）を グリ−スポケット（５）に嵌合させている。連通孔（６）は、図１と同様に形成 している。2 (a) and 2 (b), cylindrical rollers (3) are arranged in a single row between the outer ring (1) and the inner ring (2) via the cage (4) to equidistantly circumferentially. The present invention is applied to the arranged single-row cylindrical roller bearing. First, in FIG. 2 (a), the grease pocket (5) is formed as an annular groove having a rectangular cross section in the center of the inner diameter surface of the inner ring (2). Then, the plastic grease (7) is fitted into the grease pocket (5). The communication hole (6) is formed as in FIG.
【００１２】 図２の（ｂ）は、グリ−スポケット（５）を内輪（２）の両端面に開口させて 内径面に断面矩形環状溝として形成している。この場合、プラスチックグリ−ス （７）は、一体環状に形成してグリ−スポケット（５）に軸方向から嵌合させて いる。そして、グリ−スポケット（５）の外径面を内輪（２）の軸方向中央部に 向けて次第に大径となるような角度（θ）の傾斜面とし、プラスチックグリ−ス （７）から滲み出した基油を、軌道面（2a）に導き易くすると共に、内輪（２） の両端面から飛散することを防止させている。また、連通孔（６）は、グリ−ス ポケット（５）の外径面の最大径部から内輪（２）の軌道面（2a）の両端と両側 の鍔面（2b）（2b）とのコ−ナ−部に存在するぬすみ部（2c）（2c）に向けて形 成している。In FIG. 2 (b), the grease pocket (5) is opened at both end faces of the inner ring (2) to form an annular groove having a rectangular cross section on the inner diameter face. In this case, the plastic grease (7) is formed in an integral annular shape and fitted in the grease pocket (5) from the axial direction. The outer surface of the grease pocket (5) is inclined toward the center of the inner ring (2) in the axial direction at an angle (θ) so that the outer diameter surface gradually increases from the plastic grease (7). The bleeding base oil is easily guided to the raceway surface (2a) and is prevented from scattering from both end surfaces of the inner ring (2). Further, the communication hole (6) extends from the maximum diameter portion of the outer diameter surface of the grease pocket (5) to both ends of the raceway surface (2a) of the inner ring (2) and the collar surfaces (2b) (2b) on both sides. It is formed toward the dull parts (2c) (2c) existing in the corner part.
【００１３】 図３の（ａ）（ｂ）は、外輪（１）と内輪（２）との間にボ−ル（3a）を円周 等配位置に配置したアンギュラ玉軸受に本考案を適用したもので、先ず、図３の （ａ）は、グリ−スポケット（５）を内輪（２）の一端面に開口させて内径面に 断面矩形環状溝として形成している。この場合、プラスチックグリ−ス（７）は 、一体環状に形成してグリ−スポケット（５）に軸方向から嵌合させている。そ して、連通孔（６）は、内輪（２）の軌道面（2a）のうちボ−ル（3a）とのアン ギュラコンタクト位置からずらせた位置に開口させている。この場合、グリ−ス ポケット（５）の外径面を内輪（２）の軸方向中央部に向けて次第に大径となる ような角度（θ）の傾斜面とし、プラスチックグリ−ス（７）から滲み出した基 油を、軌道面（2a）に導き易くすると共に、内輪（２）の両端面から飛散するこ とを防止させることも可能である。3 (a) and 3 (b), the present invention is applied to an angular contact ball bearing in which balls (3a) are arranged equidistantly between the outer ring (1) and the inner ring (2). First, in FIG. 3 (a), the grease pocket (5) is opened in one end surface of the inner ring (2) to form a rectangular annular groove in cross section on the inner diameter surface. In this case, the plastic grease (7) is formed as an integral ring and fitted in the grease pocket (5) from the axial direction. The communication hole (6) is opened at a position displaced from the angular contact position with the ball (3a) on the raceway surface (2a) of the inner ring (2). In this case, the outer diameter surface of the grease pocket (5) is an inclined surface with an angle (θ) that gradually increases toward the axial center of the inner ring (2), and the plastic grease (7) It is possible to easily guide the base oil oozing out from the raceway surface (2a) and prevent it from scattering from both end surfaces of the inner ring (2).
【００１４】 図３の（ｂ）は、グリ−スポケット（５）を内輪（２）の内径面に断面矩形環 状溝として形成している。この場合、プラスチックグリ−ス（７）は、２体分離 型として形成してグリ−スポケット（５）に嵌合させている。そして、連通孔（ ６）は、内輪（２）の軌道面（2a）のうちボ−ル（3a）とのアンギュラコンタク ト位置からずらせた位置に開口させている。In FIG. 3B, the grease pocket (5) is formed in the inner diameter surface of the inner ring (2) as a groove having a rectangular cross section. In this case, the plastic grease (7) is formed as a two-piece separated type and fitted into the grease pocket (5). The communication hole (6) is opened at a position displaced from the angular contact position with the ball (3a) on the raceway surface (2a) of the inner ring (2).
【００１５】 図３の（ｃ）（ｄ）は、外輪（１）と内輪（２）との間に円錐ころ（3b）を円 周等配位置に配置した単列円錐ころ軸受に本考案を適用したもので、先ず、図３ の（ｃ）は、グリ−スポケット（５）を内輪（２）の内径面に断面矩形環状溝と して形成している。この場合、プラスチックグリ−ス（７）は２体分離型として 形成してグリ−スポケット（５）に嵌合させている。そして、連通孔（６）は、 内輪（２）の軌道面（2a）の両端と両側の鍔面（2b）（2b）とのコ−ナ−部に存 在するぬすみ部（2c）（2c）に向けて形成している。3 (c) and 3 (d) show the present invention in a single row tapered roller bearing in which tapered rollers (3b) are arranged equidistantly between the outer ring (1) and the inner ring (2). 3 (c), the grease pocket (5) is formed on the inner diameter surface of the inner ring (2) as a rectangular annular groove in cross section. In this case, the plastic grease (7) is formed as a two-piece separated type and fitted into the grease pocket (5). The communication hole (6) is provided at the corners of the inner race (2) on both sides of the raceway surface (2a) and on both sides of the collar faces (2b) (2b). ) Is formed towards.
【００１６】 図３の（ｄ）は、グリ−スポケット（５）を内輪（２）の軌道面（2a）の大径 端側の端面に開口させて内径面に断面矩形環状溝として形成している。この場合 、プラスチックグリ−ス（７）は、一体環状に形成してグリ−スポケット（５） に軸方向から嵌合させている。そして、連通孔（６）は、内輪（２）の軌道面（ 2a）の大径側の鍔面（2b）とのコ−ナ−部に存在するぬすみ部（2c）に向けて形 成している。この場合も、グリ−スポケット（５）の外径面を内輪（２）の軸方 向中央部に向けて次第に大径となるような角度（θ）の傾斜面とし、プラスチッ クグリ−ス（７）から滲み出した基油を、軌道面（2a）に導き易くすると共に、 内輪（２）の両端面から飛散することを防止させることも可能である。FIG. 3 (d) shows that the grease pocket (5) is formed on the inner diameter surface as a rectangular annular groove in cross section by opening it on the end surface on the large diameter end side of the raceway surface (2a) of the inner ring (2). ing. In this case, the plastic grease (7) is formed in an integral annular shape and fitted in the grease pocket (5) from the axial direction. Then, the communication hole (6) is formed toward the recessed portion (2c) existing in the corner portion of the raceway surface (2a) of the inner ring (2) and the flange surface (2b) on the large diameter side. ing. Also in this case, the outer diameter surface of the grease pocket (5) is an inclined surface at an angle (θ) so that the diameter gradually increases toward the center of the inner ring (2) in the axial direction, and the plastic grease ( It is possible to easily guide the base oil exuded from 7) to the raceway surface (2a) and prevent it from scattering from both end surfaces of the inner ring (2).
【００１７】 図３の（ｅ）（ｆ）は、外輪（１）と内輪（２）との間に調心ころ（3c（3c） ）を円周等配位置に配置した複列自動調心ころ軸受に本考案を適用したもので、 先ず、図３の（ｅ）は、グリ−スポケット（５）を内輪（２）の内径面中央に断 面矩形環状溝として形成している。この場合、プラスチックグリ−ス（７）は２ 体分離型として形成してグリ−スポケット（５）に嵌合させている。そして、連 通孔（６）は、内輪（２）の軌道面（2a）（2a）の一端と中央の鍔面（2b）との コ−ナ−部に存在するぬすみ部（2c）（2c）に向けて形成している。(E) and (f) of FIG. 3 are double-row self-aligning in which centering rollers (3c (3c)) are arranged at equal circumferential positions between the outer ring (1) and the inner ring (2). The present invention is applied to a roller bearing. First, as shown in FIG. 3 (e), a grease pocket (5) is formed in the center of the inner diameter surface of the inner ring (2) as a cut surface rectangular annular groove. In this case, the plastic grease (7) is formed as a two-piece separated type and fitted into the grease pocket (5). The communication hole (6) is provided at the corners between one end of the raceway surfaces (2a) (2a) of the inner ring (2) and the central collar surface (2b), and the recessed portions (2c) (2c). ) Is formed towards.
【００１８】 図３の（ｆ）は、グリ−スポケット（５）を内輪（２）の内径面に断面矩形環 状溝として両端付近まで広幅に形成している。この場合、プラスチックグリ−ス （７）は、２体分離型として形成してグリ−スポケット（５）に嵌合させている 。そして、連通孔（６）は、内輪（２）の軌道面（2a）（2a）の両端と両側の鍔 面（2b）（2b）とのコ−ナ−部に存在するぬすみ部（2c）（2c）に向けて形成し ている。In FIG. 3 (f), the grease pocket (5) is formed in the inner diameter surface of the inner ring (2) as a groove having a rectangular cross section so as to be wide toward both ends. In this case, the plastic grease (7) is formed as a two-piece separated type and fitted into the grease pocket (5). The communication hole (6) is provided at the corners between the ends of the raceway surfaces (2a) (2a) of the inner ring (2) and the flange surfaces (2b) (2b) on both sides of the inner ring (2). Formed towards (2c).
【００１９】 本考案で使用するプラスチックグリ−ス（７）は、例えば、下記の組成のもの を使用する。 Ａ：ポリアミド（粒径80〜200μm）50wt％ ＋Ｎａ石鹸・ポリオ−ルエステル系グリ−ス（稠度No３）50wt％ Ｂ：超高分子量ポリオレフィン（分子量100万〜500万、粒径1〜100μm）20wt％ ＋Ｌｉ石鹸・鉱油系グリ−ス（稠度No３）80wt％ Ｃ：超高分子量ポリエチレン（分子量100万〜500万、粒径104〜246μm）20wt％ ＋Ｌｉ石鹸・鉱油系グリ−ス（稠度No３）80wt％The plastic grease (7) used in the present invention has, for example, the following composition. A: Polyamide (particle size 80 to 200 μm) 50 wt% + Na soap / polyol ester grease (concentration No3) 50 wt% B: Ultra high molecular weight polyolefin (molecular weight 1 to 5 million, particle size 1 to 100 μm) 20 wt% + Li soap / mineral oil type grease (concentration No3) 80wt% C: Ultra high molecular weight polyethylene (molecular weight 1-5 million, particle size 104-246μm) 20wt% + Li soap / mineral oil type grease (concentration No3) 80wt%
【００２０】 上記各組成のプラスチックグリ−スの遠心分離器による基油の分離状況は、図 ４に示す通りである。組成Ａは、3000Ｇと5700Ｇ、組成Ｂは、1000Ｇと3000Ｇと 5700Ｇ、組成Ｃは、7500Ｇの遠心力をそれぞれ作用させたものである。尚、Ｇは 、重力加速度で980cm／sec2である。図４から、離油度は遠心力が大きくなるほ ど増加すること及び潤滑グリ−スとプラスチックの割合、グリ−スの基油と増稠 剤の割合によっても変化することが明らかである。従って、軸受の使用条件に合 わせてプラスチックグリ−スの最適な組成を選択して使用することにより、遠心 力作用で基油を所定量づつ滲み出させてグリ−スポケット（５）内から連通孔（ ６）を経て軌道面（2a）に長時間安定して給脂させることができる。The state of separation of the base oil by the centrifugal separator of the plastic grease of each composition described above is as shown in FIG. The centrifugal force of composition A is 3000 G and 5700 G, the composition B is 1000 G, 3000 G and 5700 G, and the composition C is 7500 G. G is a gravitational acceleration of 980 cm / sec 2 . From FIG. 4, it is clear that the oil separation degree increases as the centrifugal force increases, and also changes depending on the ratio of lubricating grease and plastic, and the ratio of grease base oil and thickener. Therefore, by selecting and using the optimal composition of the plastic grease according to the operating conditions of the bearing, the base oil is exuded by a predetermined amount by the action of centrifugal force, and from the inside of the grease pocket (5). It is possible to stably lubricate the raceway surface (2a) for a long time through the communication hole (6).
【００２１】 本考案は、図示例に限らず各種形式の軸受、即ち、内輪回転型の軸受に適用す ることができる。また、本考案のグリ−スポケット（５）及び連通孔（６）は、 内輪（２）の一部に形成した場合を例示しているがこれに制約されず、内輪（２ ）の一側又は両側に配置される間座（８）に形成してもよい。連通孔（６）の形 成個数は、各実施例ともに円周方向に複数個等間隔又は適宜の間隔で形成するも のである。また、グリ−スポケット（５）は、環状溝形状に限らず、円周方向に 複数に分割して形成してもよい。そして、グリ−スポケット（５）に嵌合させる プラスチックグリ−ス（７）の形状もグリ−スポケット（５）の形状に合わせて 一体型や複数分離型とすることができる。尚、グリ−スポケット（５）にプラス チックグリ−ス（７）を充填させる手段としては、以上説明したように、プラス チックグリ−ス（７）を所定形状に形成し、これをグリ−スポケット（５）に嵌 合する手段の他、例えば、グリ−スポケット（５）に固化前のプラスチックグリ −ス（７）を充填した後、これを固化させる手段がある。The present invention is not limited to the illustrated example, but can be applied to various types of bearings, that is, inner ring rotating type bearings. Further, the grease pocket (5) and the communication hole (6) of the present invention are illustrated as being formed in a part of the inner ring (2), but the present invention is not limited to this and one side of the inner ring (2). Alternatively, it may be formed on the spacers (8) arranged on both sides. The number of communication holes (6) formed in each embodiment is equal to or more than one at equal intervals in the circumferential direction. Further, the grease pocket (5) is not limited to the annular groove shape, and may be formed by being divided into a plurality in the circumferential direction. The shape of the plastic grease (7) fitted in the grease pocket (5) can be an integral type or a plurality of separate types according to the shape of the grease pocket (5). As described above, as a means for filling the grease pocket (5) with the plastic grease (7), the plastic grease (7) is formed in a predetermined shape, and the grease pocket is formed. In addition to the means for fitting into (5), for example, there is a means for filling the grease pocket (5) with the plastic grease (7) before solidification and then solidifying it.
【００２２】[0022]
本考案によれば、内輪又は間座の回転により生じる遠心力作用で内輪又は間座 の一部に形成されたグリ−スポケット内のプラスチックグリ−ス中に保持された 基油が滲み出してグリ−スポケット内から連通孔を経て軌道面に供給されるため 、転動体との接触部に潤滑不足が生じず、長時間安定して給脂させることができ 、潤滑の長寿命化が図れ、軸受寿命を向上させることができる。 According to the present invention, the base oil retained in the plastic grease in the grease pocket formed in a part of the inner ring or spacer is exuded by the centrifugal force generated by the rotation of the inner ring or spacer. Since it is supplied from the inside of the grease pocket to the raceway surface through the communication hole, insufficient lubrication does not occur at the contact part with the rolling element, stable lubrication can be performed for a long time, and the life of lubrication can be extended. The bearing life can be improved.
【００２３】 また、プラスチックグリ−ス中に保持された基油の滲み出しは、内輪又は間座 の回転により生じる遠心力作用によるため、回転停止中には基油の滲み出しがな く、油洩れ等が防止される。Further, the exudation of the base oil held in the plastic grease is caused by the centrifugal force generated by the rotation of the inner ring or spacer, so that the exudation of the base oil does not occur while the rotation is stopped. Leakage is prevented.
【００２４】 更に、軸受の使用条件に合わせて基油の滲み出し速度の最適な組成のプラスチ ックグリ−スを選択することができ、従来のように連通孔等の孔径を絞る方式よ りも簡単に対処することができる。Furthermore, it is possible to select a plastic grease having an optimal composition for the exudation speed of the base oil according to the operating conditions of the bearing, which is simpler than the conventional method of narrowing the diameter of the communication holes. Can be dealt with.
【００２５】 また、プラスチックグリ−スは予め一体型又は複数分離型に成型しておくこと ができるため、グリ−スポケットへの組み込みが簡単容易である。Moreover, since the plastic grease can be molded in advance as an integral type or a plurality of separate types, it is easy and easy to assemble it into the grease pocket.
【図１】本考案の第１実施例を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図２】（ａ）は、第２実施例、（ｂ）は、第３実施例
を示す断面図である。2A is a sectional view showing a second embodiment, and FIG. 2B is a sectional view showing a third embodiment.
【図３】（ａ）は、第４実施例、（ｂ）は、第５実施
例、（ｃ）は、第６実施例、（ｄ）は、第７実施例、
（ｅ）は、第８実施例、（ｆ）は、第９実施例である。FIG. 3 (a) is a fourth embodiment, (b) is a fifth embodiment, (c) is a sixth embodiment, (d) is a seventh embodiment,
(E) is an 8th Example, (f) is a 9th Example.
【図４】本考案で使用するプラスチックグリ−スの遠心
分離器による基油の分離状況を示す特性グラフである。FIG. 4 is a characteristic graph showing the state of separation of base oil by the centrifugal separator of the plastic grease used in the present invention.
１ 外輪 ２ 内輪 2a 軌道面 ３、3a、3b、3c 転動体 ５ グリ−スポケット ６ 連通孔 ７ プラスチックグリ−ス ８ 間座 1 Outer ring 2 Inner ring 2a Raceway surface 3, 3a, 3b, 3c Rolling element 5 Grease pocket 6 Communication hole 7 Plastic grease 8 Spacer
Claims (1)
スポケットから軌道面に連通する連通孔とを設け、グリ
−スポケットにプラスチックグリ−スを充填させたこと
を特徴とする転がり軸受。1. In an inner ring rotating type rolling bearing, a grease pocket and a grease are provided in a part of the inner ring or spacer of the bearing.
A rolling bearing characterized in that a communication hole communicating from the pocket to the raceway surface is provided, and the grease pocket is filled with plastic grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP034870U JPH0594531U (en) | 1992-05-26 | 1992-05-26 | Rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP034870U JPH0594531U (en) | 1992-05-26 | 1992-05-26 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0594531U true JPH0594531U (en) | 1993-12-24 |
Family
ID=12426194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP034870U Withdrawn JPH0594531U (en) | 1992-05-26 | 1992-05-26 | Rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0594531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2175152A1 (en) * | 2008-10-08 | 2010-04-14 | United Technologies Corporation | Roller bearing |
| DE10235239B4 (en) * | 2001-08-01 | 2010-12-02 | Nsk Ltd. | Grease-lubricated angular contact ball bearing and spindle device for machine tools |
-
1992
- 1992-05-26 JP JP034870U patent/JPH0594531U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10235239B4 (en) * | 2001-08-01 | 2010-12-02 | Nsk Ltd. | Grease-lubricated angular contact ball bearing and spindle device for machine tools |
| EP2175152A1 (en) * | 2008-10-08 | 2010-04-14 | United Technologies Corporation | Roller bearing |
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| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
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