JPH0740730Y2 - Cylindrical roller bearing - Google Patents
Cylindrical roller bearingInfo
- Publication number
- JPH0740730Y2 JPH0740730Y2 JP1989094527U JP9452789U JPH0740730Y2 JP H0740730 Y2 JPH0740730 Y2 JP H0740730Y2 JP 1989094527 U JP1989094527 U JP 1989094527U JP 9452789 U JP9452789 U JP 9452789U JP H0740730 Y2 JPH0740730 Y2 JP H0740730Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical roller
- annular body
- roller bearing
- cage
- lubricating oil
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、円筒ころ軸受に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cylindrical roller bearing.
一般に、工作機械の主軸は、負荷容量の大きな円筒ころ
軸受で支持される。Generally, the spindle of a machine tool is supported by a cylindrical roller bearing having a large load capacity.
第３図は従来の円筒ころ軸受を示し、外輪１とつば付き
内輪２との間に円筒ころ３を組込み、その円筒ころ３を
保持器４で保持している。FIG. 3 shows a conventional cylindrical roller bearing, in which a cylindrical roller 3 is incorporated between an outer ring 1 and a flanged inner ring 2, and the cylindrical roller 3 is held by a cage 4.
上記円筒ころ軸受においては、保持器４を外輪１又は内
輪２の軌道輪で案内するものと、円筒ころ３で案内する
ものがあり、そのうち、軌道輪案内のものは、保持器４
とその案内面の油潤滑が良好であるため、工作機械の主
軸の軸受用として広く用いられている。In the above-mentioned cylindrical roller bearing, there are ones in which the cage 4 is guided by the outer ring 1 or the inner ring 2 and ones in which the cylindrical roller 3 guides. Among them, the ring ring guide is the cage 4
It is widely used as a bearing for the main shaft of machine tools because it has good oil lubrication on its guide surface.
ところで、円筒ころ軸受は、主軸が高速回転されると、
外輪１と円筒ころ３、円筒ころ３と内輪２、保持器４と
その案内面における各接触部において発熱し、潤滑が不
充分であると焼付きを起こす。By the way, in a cylindrical roller bearing, when the main shaft rotates at high speed,
The outer ring 1 and the cylindrical roller 3, the cylindrical roller 3 and the inner ring 2, and the retainer 4 and its contact surface on the guide surface generate heat, and seizure occurs if the lubrication is insufficient.
このため、円筒ころ軸受は、ジェット潤滑等の手段を介
して油潤滑される。そこで、保持器が外輪案内される円
筒ころ軸受の側面から軸受内部に油をジェット噴射する
と、その油は、第３図の矢印で示すように、内輪２と保
持器４の間から円筒ころ３とポケットのすきまを流れて
円筒ころ３と外輪軌道面の接触部に流入し、その接触部
を潤滑する。Therefore, the cylindrical roller bearing is oil-lubricated by means such as jet lubrication. Therefore, when oil is jetted into the inside of the bearing from the side surface of the cylindrical roller bearing in which the cage is guided by the outer ring, the oil is injected from between the inner ring 2 and the cage 4 into the cylindrical roller 3 as indicated by the arrow in FIG. And flows into the contact portion between the cylindrical roller 3 and the outer ring raceway surface to lubricate the contact portion.
ところで、保持器４が外輪案内される円筒ころ軸受にお
いては、保持器４の両端部に設けられた一対の環状体
５、５の外径面と外輪１の内径面のすきまが、通常、0.
1〜0.2mmときわめて小さいため、ジェット潤滑によって
軸受を潤滑した場合、一対の環状体５間における保持器
４の外周と外輪１の軌道面間に油が溜り易く、その溜っ
た油は軸受の高速回転時に攪拌され、その攪拌抵抗のた
めに軸受の温度が上がる不都合があった。By the way, in a cylindrical roller bearing in which the cage 4 is guided to the outer ring, the clearance between the outer diameter surface of the pair of annular bodies 5, 5 and the inner diameter surface of the outer ring 1 provided at both ends of the cage 4 is usually 0. .
When the bearing is lubricated by jet lubrication, oil is likely to accumulate between the outer periphery of the cage 4 and the raceway surface of the outer ring 1 between the pair of annular bodies 5, because the oil is very small, 1 to 0.2 mm. There is a problem that the temperature of the bearing rises due to the stirring resistance due to stirring at the time of high speed rotation.
そこで、この考案は上記の不都合を解消し、潤滑油の流
通性を向上し、油の攪拌抵抗による温度上昇を抑制する
ことを技術的課題としている。Then, this invention makes it a technical subject to eliminate the above-mentioned inconvenience, to improve the circulation of lubricating oil, and to suppress the temperature rise by stirring resistance of oil.
上記の課題を解決するために、この考案においては、外
輪と内輪との間に外輪案内される保持器を組込み、その
保持器のポケット内に上記外輪と内輪との間に組込まれ
た円筒ころを収納し、前記保持器の一方の端部から軌道
面に潤滑油を供給するようにした円筒ころ軸受におい
て、前記保持器の両端部に形成された一対の環状体のう
ち、前記一方の端部と反対側の環状体の外径を前記一方
の端部側の環状体の外径より小径に形成し、前記一方の
端部側の環状体と前記内輪との間から潤滑油を供給し、
前記小径側の環状体と前記外輪との間に形成された油通
路から潤滑油を排出させる構成を採用している。In order to solve the above-mentioned problems, in the present invention, a retainer for guiding an outer ring is incorporated between an outer ring and an inner ring, and a cylindrical roller incorporated between the outer ring and the inner ring in a pocket of the retainer. In a cylindrical roller bearing for storing lubricating oil from one end of the retainer to the raceway surface, the one end of the pair of annular bodies formed at both ends of the retainer. The outer diameter of the annular body on the side opposite to the portion is formed to be smaller than the outer diameter of the annular body on the one end side, and the lubricating oil is supplied from between the annular body on the one end side and the inner ring. ,
A configuration is adopted in which lubricating oil is discharged from an oil passage formed between the annular body on the small diameter side and the outer ring.
上記のように、保持器の潤滑油供給側の環状体よりその
反対側の環状体の外径を小径としたことにより、大径側
環状体と内輪との間に潤滑油を供給すると、その潤滑油
は軸受の回転による遠心力により保持器のポケットを通
り抜けて保持器の外径側に移動し、小径側環状体と外輪
との間に形成された油通路からスムースに排出される。As described above, when the outer diameter of the annular body on the opposite side of the annular body on the lubricating oil supply side of the cage is made smaller, the lubricating oil is supplied between the large-diameter side annular body and the inner ring. The lubricating oil passes through the pocket of the cage by the centrifugal force due to the rotation of the bearing, moves to the outer diameter side of the cage, and is smoothly discharged from the oil passage formed between the small diameter annular body and the outer ring.
以下、この考案の実施例を第１図および第２図に基づい
て説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
図示のように、外輪１と内輪２との間に組込まれた保持
器10は一対の環状体11a、11bの周方向に複数の柱12が形
成され、隣接する柱12間にポケット13が設けられた構成
とされ、上記ポケット13内に円筒ころ３が収容されてい
る。As shown in the figure, the cage 10 assembled between the outer ring 1 and the inner ring 2 has a plurality of columns 12 formed in the circumferential direction of a pair of annular bodies 11a and 11b, and a pocket 13 is provided between adjacent columns 12. The cylindrical roller 3 is housed in the pocket 13 with the above structure.
一対の環状体11a、11bは外径寸法が異なり、その大径側
環状体11aが外輪１の内径面によって案内される。ま
た、小径側環状体11bの外径面と外輪１の内径面間に環
状の油通路14が形成されている。The pair of annular bodies 11a and 11b have different outer diameter dimensions, and the large-diameter side annular body 11a is guided by the inner diameter surface of the outer ring 1. An annular oil passage 14 is formed between the outer diameter surface of the small diameter side annular body 11b and the inner diameter surface of the outer ring 1.
実施例で示す円筒ころ軸受は上記の構造から成り、この
円筒ころ軸受で例えば工作機械の主軸を支持する場合
は、その円筒ころ軸受を油潤滑する。その油潤滑のた
め、実施例の場合は、円筒ころ軸受における保持器の大
径側環状体11aの一側方に径の異なる一対の間座20、21
を組込み大径側の間座20に設けたノズル22から円筒ころ
軸受の内部に潤滑油をジェット噴射するようにしてい
る。The cylindrical roller bearing shown in the embodiment has the above-mentioned structure. When the cylindrical roller bearing supports the main shaft of a machine tool, for example, the cylindrical roller bearing is oil-lubricated. Due to the oil lubrication, in the case of the embodiment, a pair of spacers 20 and 21 having different diameters are provided on one side of the large-diameter side annular body 11a of the cage in the cylindrical roller bearing.
The lubricating oil is jet-injected into the inside of the cylindrical roller bearing from a nozzle 22 provided in the spacer 20 on the large diameter side.
いま、上記ノズル22から内輪２と保持器10の大径側環状
体11aの間に潤滑油を噴射すると、その潤滑油は、第１
図の矢印で示すように、軸受の回転による遠心力により
外方向に移動して円筒ころ３とポケット13のすきまから
保持器10の外径面と外輪１の内径面間に流入し、円筒こ
ろ３と外輪１の軌道面間を潤滑する。Now, when the lubricating oil is injected from the nozzle 22 between the inner ring 2 and the large-diameter annular body 11a of the cage 10, the lubricating oil is
As indicated by the arrow in the figure, the centrifugal force generated by the rotation of the bearing causes the centrifugal force to move outward and the clearance between the cylindrical roller 3 and the pocket 13 to flow between the outer diameter surface of the cage 10 and the inner diameter surface of the outer ring 1 3. Lubricate between the raceway surface of the outer ring 1 and the outer race 3.
また、保持器10の外径面と外輪１の内径面間に流入した
潤滑油は油通路14から流出する。このため、潤滑油は保
持器10と外輪１間に滞溜することなくスムースに流れ、
潤滑油の攪拌抵抗による軸受の温度上昇を低く抑えるこ
とができる。Further, the lubricating oil that has flowed in between the outer diameter surface of the cage 10 and the inner diameter surface of the outer ring 1 flows out from the oil passage 14. Therefore, the lubricating oil flows smoothly between the cage 10 and the outer ring 1 without accumulating,
The temperature rise of the bearing due to the stirring resistance of the lubricating oil can be suppressed to a low level.
以上のように、この考案によれば、保持器の両端部に設
けられた一対の環状体のうち、潤滑油供給側と反対側の
環状体の外径を潤滑油供給側の環状体の外径より小径と
し、その小径側環状体と外輪との間に油通路を形成した
ことにより、大径側保持器と内輪との間に供給した潤滑
油を軸受内部で滞溜させることなく上記油通路からスム
ースに排出させることができる。このため、潤滑油の攪
拌抵抗による軸受の温度上昇を抑制することができる。As described above, according to the present invention, of the pair of annular bodies provided at both ends of the cage, the outer diameter of the annular body on the opposite side to the lubricating oil supply side is the outer diameter of the annular body on the lubricating oil supply side. The diameter is smaller than the diameter, and the oil passage is formed between the small-diameter side annular body and the outer ring, so that the lubricating oil supplied between the large-diameter side retainer and the inner ring does not accumulate inside the bearing It can be discharged smoothly from the passage. Therefore, the temperature rise of the bearing due to the stirring resistance of the lubricating oil can be suppressed.
第１図は、この考案に係る円筒ころ軸受の一実施例を示
す断面図、第２図は同上保持器の一部分を示す斜視図、
第３図は従来の円筒ころ軸受を示す断面図である。 １……外輪、２……内輪、３……円筒ころ、10……保持
器、11a、11b……環状体、12……柱、13……ポケット、
14……油通路。FIG. 1 is a sectional view showing an embodiment of a cylindrical roller bearing according to the present invention, and FIG. 2 is a perspective view showing a part of the same cage,
FIG. 3 is a sectional view showing a conventional cylindrical roller bearing. 1 ... Outer ring, 2 ... Inner ring, 3 ... Cylindrical roller, 10 ... Retainer, 11a, 11b ... Annular body, 12 ... Pillar, 13 ... Pocket,
14 ... Oil passage.
Claims (1)
を組込み、その保持器のポケット内に上記外輪と内輪と
の間に組込まれた円筒ころを収納し、前記保持器の一方
の端部から軌道面に潤滑油を供給するようにした円筒こ
ろ軸受において、前記保持器の両端部に形成された一対
の環状体のうち、前記一方の端部と反対側の環状体の外
径を前記一方の端部側の環状体の外径より小径に形成
し、前記一方の端部側の環状体と前記内輪との間から潤
滑油を供給し、前記小径側の環状体と前記外輪との間に
形成された油通路から潤滑油を排出させる構成にしたこ
とを特徴とする円筒ころ軸受。1. A retainer for guiding an outer race is installed between an outer race and an inner race, and a cylindrical roller incorporated between the outer race and the inner race is housed in a pocket of the retainer, and one of the retainers is installed. Of a pair of annular bodies formed at both ends of the cage, the outer surface of the annular body opposite to the one end is The diameter is formed to be smaller than the outer diameter of the annular body on the one end side, the lubricating oil is supplied from between the annular body on the one end side and the inner ring, and the annular body on the small diameter side and the A cylindrical roller bearing having a structure in which lubricating oil is discharged from an oil passage formed between the outer ring and the outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989094527U JPH0740730Y2 (en) | 1989-08-10 | 1989-08-10 | Cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989094527U JPH0740730Y2 (en) | 1989-08-10 | 1989-08-10 | Cylindrical roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0333220U JPH0333220U (en) | 1991-04-02 |
| JPH0740730Y2 true JPH0740730Y2 (en) | 1995-09-20 |
Family
ID=31643852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989094527U Expired - Lifetime JPH0740730Y2 (en) | 1989-08-10 | 1989-08-10 | Cylindrical roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740730Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6742934B2 (en) | 2000-10-27 | 2004-06-01 | Nsk Ltd. | Rolling bearing and spindle apparatus for machine tool |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100353368B1 (en) * | 2000-10-04 | 2002-09-18 | 엘지전자주식회사 | A roller assembly |
| JP2007255494A (en) * | 2006-03-22 | 2007-10-04 | Jtekt Corp | Roller bearing for planetary gear |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58108622U (en) * | 1982-01-20 | 1983-07-23 | 日本精工株式会社 | Cage for roller bearings |
| JPH0620905Y2 (en) * | 1987-05-12 | 1994-06-01 | 日本精工株式会社 | Roller bearing |
-
1989
- 1989-08-10 JP JP1989094527U patent/JPH0740730Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6742934B2 (en) | 2000-10-27 | 2004-06-01 | Nsk Ltd. | Rolling bearing and spindle apparatus for machine tool |
| USRE48843E1 (en) | 2000-10-27 | 2021-12-07 | Nsk Ltd. | Rolling bearing and spindle apparatus for machine tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333220U (en) | 1991-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |