JPS6039887B2 - Grooved hydrodynamic bearing - Google Patents
Grooved hydrodynamic bearingInfo
- Publication number
- JPS6039887B2 JPS6039887B2 JP4687877A JP4687877A JPS6039887B2 JP S6039887 B2 JPS6039887 B2 JP S6039887B2 JP 4687877 A JP4687877 A JP 4687877A JP 4687877 A JP4687877 A JP 4687877A JP S6039887 B2 JPS6039887 B2 JP S6039887B2
- Authority
- JP
- Japan
- Prior art keywords
- receiving
- groove
- ridge
- receiving part
- medium inflow
- 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
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Description
【発明の詳細な説明】
この発明は油などの液体を媒体として作動するみそ付き
動圧形軸受に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydrodynamic bearing with a groove that operates using a liquid such as oil as a medium.
従来のみぞ付き動圧形軸受は第１図に示すように、軸部
材ｌａに設けた受部４ａと受部材２ａに設けた受部３ａ
とが対向している。As shown in FIG. 1, a conventional grooved hydrodynamic bearing has a receiving portion 4a provided on the shaft member la and a receiving portion 3a provided on the receiving member 2a.
are facing each other.
前記軸部村の受部４ａはリッジ１０ａとりッジ１０ａに
接続するスパイラルのみぞ５ａとを有し、このみぞ５ａ
は第２図に示すように媒体流入側の側面６ａと底面８ａ
と媒体流入側の側面に対向すぬ側面９ａとを有している
。前記みぞ５ａの長さ方向のほぼ全部の部分は断面形状
が短形であり、媒体流入側の側面６ａはリツジ１０ａと
直交すると共に底面８ａと直交する。前記軸部村ｌａが
受部材２ａに対して油などの液体を煤として回転作動す
ると、液体がみぞ５ａは流入する。The receiving portion 4a of the shaft portion has a ridge 10a and a spiral groove 5a connected to the ridge 10a.
As shown in FIG. 2, the side surface 6a on the medium inflow side and the bottom surface 8a
and a side surface 9a that is not opposed to the side surface on the medium inflow side. Almost all of the groove 5a in the longitudinal direction has a rectangular cross-sectional shape, and the side surface 6a on the medium inflow side is perpendicular to the ridge 10a and perpendicular to the bottom surface 8a. When the shaft portion la rotates with respect to the receiving member 2a using liquid such as oil as soot, the liquid flows into the groove 5a.
前記媒体流入側の側面６ａはリッジ１０ａと直交するの
で軸部材の受部４ａと受部材の受部３ａとの間隔はみぞ
５ａで急激に大きくなり、液体がみぞ５ａへ流入する際
に液体の圧力は第３図に示すように媒体流入側の側面の
底面側の端１４ａの近傍で急激に低下する。前記媒体流
入側の側面の底面側の端１４ａの近傍に位贋する液体の
圧力は、周囲圧即ち軸部村の受部と受部材の受部との間
への液体の入口部７ａより外方に位置する液体の圧力よ
り低くなり、軸部材の受部４ａと受部材の受部３ａとの
間でキャビテーションが発生して藤部村の受部４ａと受
部材の受部３ａとに侵食が生じるとい，う欠点があった
。この発明は藤部村の受部と受部材の受部との間でのキ
ャビテーションの発生を防止若しくは軽減し、キャピテ
ーションに起因する侵食を防止することを目的とする。
この発明の基本的な構成は、軸部材に設けた受部と受部
材に設けた受部とが対向し、前記磯部材の受部と受部材
の受部との少なくとも一方はリッジとりッジに接続する
みぞを有し、該みぞは媒体流入側の側面と底面と媒体流
入側の側面に対向する側面とを有し、前記軸部材の受部
と受部材の受部とが液体を媒体として共働するみぞ付き
動圧形軸受において、前記媒体流入側の側面のリッジの
近傍に位置する部分の面のほぼ全面は隣接するりッジと
なめらかにつながった曲面であり、前記みぞの長さ方向
のほぼ全部の部分は媒体流入側の側面の深さ方向の両端
を結ぶ直線と底面とのなす角度が大きな鈍角であり、前
詰軸部材の受部との間でのキャビテーションの発生を防
止若しくは軽減することにある。Since the side surface 6a on the medium inflow side is perpendicular to the ridge 10a, the distance between the receiving part 4a of the shaft member and the receiving part 3a of the receiving member suddenly increases at the groove 5a, so that when the liquid flows into the groove 5a, the liquid As shown in FIG. 3, the pressure rapidly decreases near the bottom end 14a of the side surface on the medium inflow side. The pressure of the liquid disposed near the bottom end 14a of the side surface on the medium inlet side is the ambient pressure, that is, the pressure of the liquid flowing between the receiving part of the shaft village and the receiving part of the receiving member outside the inlet part 7a. The pressure becomes lower than the pressure of the liquid located on the other side, and cavitation occurs between the receiving part 4a of the shaft member and the receiving part 3a of the receiving member, and the receiving part 4a of the Fujibemura and the receiving part 3a of the receiving member are eroded. There was a drawback that it caused The object of the present invention is to prevent or reduce the occurrence of cavitation between the receiving part of the Fujibemura and the receiving part of the receiving member, and to prevent erosion caused by cavitation.
The basic configuration of the present invention is that a receiving part provided on a shaft member and a receiving part provided on a receiving member are opposed to each other, and at least one of the receiving part of the rock member and the receiving part of the receiving member is a ridge. The groove has a side surface on the medium inflow side, a bottom surface, and a side surface opposite to the side surface on the medium inflow side, and the receiving part of the shaft member and the receiving part of the receiving member connect the liquid to the medium. In a hydrodynamic bearing with grooves that cooperates with each other, almost the entire surface of the portion located near the ridge on the side surface on the medium inflow side is a curved surface smoothly connected to the adjacent ridge, and the length of the groove is In almost all parts in the horizontal direction, the angle between the bottom surface and the straight line connecting both ends of the side surface on the media inflow side in the depth direction is a large obtuse angle, which prevents cavitation from occurring between the front filling shaft member and the receiving part. The purpose is to prevent or reduce.
次にこの発明の実施例を図面に基いて説明する。Next, embodiments of the present invention will be described based on the drawings.
第４図において、軸部材１の軸端に設けた凸球面の受部
４と受部材２に設けた凹球面の受部３とが対向している
。In FIG. 4, a convex spherical receiving portion 4 provided at the shaft end of the shaft member 1 and a concave spherical receiving portion 3 provided on the receiving member 2 are opposed to each other.
前記軸部村の受部４は球面状のりッジ１０とりッジー０
‘こ接続するみそ１５とを有し、このみぞ５はスパイラ
ル状のみぞとなっている。前記みぞ５の長さ方向のほぼ
全部の部分は第５図に示すように媒体流入側の側面６と
底面８と媒体流入側の側面に対向する側面９とを有して
いる。前記みそ一の側面８は断面がほぼ直線上に形成さ
れ、この底面８はリツジ１０とほぼ平行にあっている。
前記媒体流入側の側面に対向する側面９は断面が直線状
に形成され、この媒体流入側の側面に対向する側面９は
底面８にほぼ直行すると共にリッジ１川こほぼ直交する
。前記媒体流入側の側面６のリツジ１０の近傍に位置す
る部分の面のほぼ全面は隣接するりッジ１川こなめらか
につながった曲面であり、また媒体流入側の側面６のリ
ッジ側の約半分に近い面１１は断面が円弧状の曲面であ
る。前記媒体流入側の側面６の底面側の約半分に近い面
１２は斜面であり、媒体流入側の側面６はリッジ側の約
半分に近い面１１と底面側の約半分に近い面１２とがな
めらかにつながっている。前記みそ１５の長さ方向のほ
ぼ全部の部分は媒体流入側の側面６の深さ方向の両端１
３，１４を結ぶ直線と底面５とのなす角度Ｑが１３５ｏ
より大きな鈍角であり、この媒体流入側の側面の深さ方
向の両端１３，１４を結ぶ直線と底面８とのなす角度Ｑ
は、媒体流入側の側面に対向する側面の深さ鞭向の両端
１５，１６を結ぶ直線と底面８とのなす角度８より大き
い。そして、軸部材の受部４と受部材の受部３とが液体
を媒体として共働する。なお、媒体流入側の側面の深さ
方向の両端Ｉ３，１４を結ぶ直線と底面８とのなす角度
ｑは１８ぴに近いほど軸部材の受部４と受部材の受部３
との間でのキャビテーションの発生を防止若しくは軽減
に好ましい。以上のような構成で軸部材１が受部材２に
対して液体を媒体として回転作動すると、軸部材の受部
４と受部材の受部３との間の軸受すきま内の液体は、媒
体流入側の側面６の長さ方向の一方の端部からみぞ５へ
流入し、また軸受すきま内の液体は媒体流入側の側面の
長さ方向の中間部からみぞ５へ流入し、さらに軸受すき
ま内の液体は媒体流入側の側面６の長さ方向の他方の端
部からみぞ５へ流入する。The receiving part 4 of the shaft part village has a spherical ridge 10 and a ridge 0.
This groove 5 is a spiral groove. As shown in FIG. 5, almost the entire length of the groove 5 has a side surface 6 on the medium inflow side, a bottom surface 8, and a side surface 9 opposite to the side surface on the medium inflow side. The side surface 8 of the miso 1 is formed to have a substantially straight cross section, and the bottom surface 8 is substantially parallel to the ridge 10.
The side surface 9 opposite to the side surface on the medium inflow side has a linear cross section, and the side surface 9 opposite to the side surface on the medium inflow side is substantially perpendicular to the bottom surface 8 and substantially perpendicular to the ridge 1. Almost the entire surface of the portion of the side surface 6 on the medium inflow side located near the ridge 10 is a curved surface that smoothly connects the adjacent ridge 10, and approximately the entire surface of the side surface 6 on the medium inflow side on the ridge side The nearly half surface 11 is a curved surface with an arcuate cross section. A surface 12 close to about half of the bottom side of the side surface 6 on the medium inflow side is a slope, and a surface 11 close to about half of the ridge side and a surface 12 close to about half of the bottom side of the side surface 6 on the medium inflow side are formed. They are connected smoothly. Almost the entire lengthwise portion of the miso paste 15 is located at both ends 1 in the depth direction of the side surface 6 on the medium inflow side.
The angle Q between the straight line connecting 3 and 14 and the bottom surface 5 is 135o
An angle Q between the bottom surface 8 and a straight line connecting both ends 13 and 14 in the depth direction of the side surface on the medium inflow side, which is a larger obtuse angle.
is larger than the angle 8 formed by the bottom surface 8 and a straight line connecting both ends 15 and 16 in the depth direction of the side surface opposite to the side surface on the medium inflow side. Then, the receiving portion 4 of the shaft member and the receiving portion 3 of the receiving member work together using the liquid as a medium. Note that the closer the angle q formed between the bottom surface 8 and the straight line connecting both ends I3 and 14 in the depth direction of the side surface on the medium inflow side to 18 degrees, the closer the receiving portion 4 of the shaft member and the receiving portion 3 of the receiving member are.
It is preferable to prevent or reduce the occurrence of cavitation between. When the shaft member 1 rotates with respect to the receiving member 2 using the liquid as a medium in the above configuration, the liquid in the bearing gap between the receiving part 4 of the shaft member and the receiving part 3 of the receiving member is caused by the inflow of the medium. The liquid flows into the groove 5 from one end in the length direction of the side surface 6, and the liquid in the bearing gap flows into the groove 5 from the middle part in the length direction of the side surface on the medium inflow side, and then flows into the groove 5. The liquid flows into the groove 5 from the other longitudinal end of the side surface 6 on the medium inlet side.
即ち、軸受すきま内の液体は媒体流入側の側面６の長さ
方向の全範囲からみぞ５へ流入する。前記媒体流入側の
側面６のリッジ１０の近傍に位置する部分の面のほぼ全
面は隣接するりッジ１０になめらかにつながった曲面で
あり、そしてみぞ５の長さ方向のほぼ全部の部分は媒体
流入側の側面の深さ方向の両端１３，１４を結ぶ直線と
底面８とのなす角度Ｑが１３５０より大きな鈍角なので
、みぞ５は除々に深さが増し、液体がみそ１５へ流入す
る際に液体の圧力は第６図に示すように除々に底下する
。前記みぞ５内の液体の圧力は、周囲圧則ち軸部材の受
部と受部材の受部との間への液体の入口部７より外方に
位置する液体の圧力より底下することはほとんどなく、
鞠部材の受部４と受部材の受部３との間でのキャビテー
ションの発生を防止若しくは軽減できる。第７図はみぞ
の形状を示す他の実施例であるが、媒体流入側の側面６
は断面が円弧状になっている。前記媒体流入側の側面６
のリッジ１０の近傍に位置する部分の面のほぼ全面は隣
接するりツジ１０になめらかにつながった曲面であり、
またみぞ５の長さ方向のほぼ全部の部分は媒体流入側の
側面の深さ方向の両端１３，１４を結ぶ直線と底面８と
のなす角度Ｑが１３５ｏより大きな鈍角である。なお図
示の実施例では軸部村の受部４がリツジ１０とりツジ１
０に接続するみそ１５とを有するが、鞠部材の受部４で
はなく受部材の受部３がリツジとりツジに接続するみぞ
とを有してもよい。That is, the liquid in the bearing gap flows into the groove 5 from the entire length of the side surface 6 on the medium inflow side. Almost the entire surface of the portion of the side surface 6 on the medium inlet side located near the ridge 10 is a curved surface smoothly connected to the adjacent ridge 10, and almost the entire length of the groove 5 is a curved surface. Since the angle Q between the bottom surface 8 and the straight line connecting both ends 13 and 14 in the depth direction of the side surface on the medium inflow side is an obtuse angle larger than 1350, the depth of the groove 5 gradually increases, and when the liquid flows into the miso 15 The pressure of the liquid gradually bottoms out as shown in FIG. The pressure of the liquid in the groove 5 is almost never lower than the ambient pressure, that is, the pressure of the liquid located outside the inlet 7 of the liquid between the receiving part of the shaft member and the receiving part of the receiving member. Without,
The occurrence of cavitation between the receiving part 4 of the ball member and the receiving part 3 of the receiving member can be prevented or reduced. FIG. 7 is another example showing the shape of the groove, and the side surface 6 on the medium inflow side
has an arc-shaped cross section. Side surface 6 on the medium inflow side
Almost the entire surface of the portion located near the ridge 10 is a curved surface smoothly connected to the adjacent ridge 10,
Further, in almost the entire length of the groove 5, the angle Q between the bottom surface 8 and the straight line connecting both ends 13 and 14 in the depth direction of the side surface on the medium inflow side is an obtuse angle larger than 135o. In addition, in the illustrated embodiment, the receiving part 4 of the shaft part village has the ridge 10 and the ridge 1.
0, but instead of the receiving part 4 of the ball member, the receiving part 3 of the receiving member may have a groove that connects to the ridge.
また、軸部材の受部４と受部材の受部３との両方がリッ
ジ１０とりツジ１０に接続するみぞ５とを有しても良く
、この場合は鞠部材の受部４のみぞ５の方向と受部村の
受部３のみぞの方向とが互に逆方向になることが好まし
い。さらに、鞠部材の受部４と受部材の受部とは球面で
はなく、円すし、面でも円筒面でも平面でもよい。また
、媒体流入側の側面に対向する側面の深さ方向の両端１
５，１６を結ぶ直線と底面８とのなす角度８を鈍角とし
ても良く、また媒体流入側の側面に対向する側面の深さ
方向の両端１５，１６を結ぶ直線と底面８とのなす角度
８を媒体流入側の側面の深さ方向の両端１３，１４を結
ぶ直線と底面８とのなす角度Ｑとほぼ等しくしてもよい
。この発明のみそ付き動圧形軸受によると、媒体流入側
の側面６のリツジ１０の近傍に位置する部分の面のほぼ
全面は隣接するりッジ１０となめらかにつながった曲面
なので、液体がみぞ５へ流入する際に圧力は除々に低下
し、また液体はみぞ５へ流入する際に圧力の低下の圧力
幅が少ない。Moreover, both the receiving part 4 of the shaft member and the receiving part 3 of the receiving member may have a groove 5 that connects to the ridge 10 and the abutment 10, and in this case, the groove 5 of the receiving part 4 of the ball member It is preferable that the direction and the direction of the groove of the receiving part 3 of the receiving part are opposite to each other. Further, the receiving part 4 of the ball member and the receiving part of the receiving member may not be spherical surfaces, but may be circular, flat, cylindrical, or flat. Also, both ends 1 in the depth direction of the side surface opposite to the side surface on the medium inflow side
The angle 8 formed between the straight line connecting 5 and 16 and the bottom surface 8 may be an obtuse angle, and the angle 8 formed between the bottom surface 8 and the straight line connecting both ends 15 and 16 in the depth direction of the side surface opposite to the side surface on the medium inflow side. may be approximately equal to the angle Q formed by the bottom surface 8 and a straight line connecting both ends 13 and 14 in the depth direction of the side surface on the medium inflow side. According to the hydrodynamic bearing with a groove according to the present invention, almost the entire surface of the portion of the side surface 6 on the medium inflow side located near the ridge 10 is a curved surface smoothly connected to the adjacent ridge 10, so that the liquid flows into the groove. When the liquid flows into the groove 5, the pressure gradually decreases, and when the liquid flows into the groove 5, the pressure decrease has a small range.
さらに、みそ１５の長さ方向のほぼ全部の部分は媒体流
入側の側面の深さ方向の両端１３，１４を結ぶ直線と底
面８とのなす角度Ｑが大きな鈍角なので、液体がみそ１
５へ流入する際に液体の圧力は除々に底下し、また液体
はみぞ５へ流入する際に圧力の底下の圧力幅が少ない。
さらに、軸部材の受部４と受部材の受部３との間の軸受
すきま内の液体は媒体流入側の側面６の長さ方向の全範
囲からみぞ５へ流入するが、みぞ５の長さ方向の両端部
及び長さ方向の両端部の間の中間部のいずれでも、液体
がみぞ５へ流入する際に液体の圧力は除々に低下し、ま
た液体はみぞ５へ流入する際に圧力の低下の圧力幅が少
ない。従って、鞠部材の受部４と受部材の受部３との間
の液体の圧力が周囲圧より低くなることはもとんどなく
、軸部村の受部４と受部材の受部３との間でのキャビテ
ーションの発生を防止若しくは軽減でき、磯部材の受部
４と受部材の受部３とに侵食が生じないという効果を有
する。Furthermore, in almost the entire length of the miso 15, the angle Q between the bottom surface 8 and the straight line connecting both ends 13 and 14 in the depth direction of the side surface on the medium inflow side is a large obtuse angle.
When the liquid flows into the groove 5, the pressure of the liquid gradually decreases to the bottom, and when the liquid flows into the groove 5, the pressure width below the bottom of the pressure is small.
Further, the liquid in the bearing gap between the receiving part 4 of the shaft member and the receiving part 3 of the receiving member flows into the groove 5 from the entire length range of the side surface 6 on the medium inflow side. The pressure of the liquid gradually decreases as the liquid flows into the groove 5, both at the ends in the width direction and in the middle between the ends in the length direction. The range of pressure drop is small. Therefore, the pressure of the liquid between the receiving part 4 of the ball member and the receiving part 3 of the receiving member rarely becomes lower than the ambient pressure, and the pressure of the liquid between the receiving part 4 of the shaft part village and the receiving part 3 of the receiving member It is possible to prevent or reduce the occurrence of cavitation between the rock and the rock member, and there is an effect that erosion does not occur in the receiving part 4 of the rock member and the receiving part 3 of the receiving member.
第１図は従来のみぞ付き動圧形軸受の縦断面図、第２図
は第１図のＡ−Ｂの断面拡大図、第３図は第２図におけ
る媒体の圧力分布図、第４図はこの発明の一実施例を示
すみぞ付き動圧形軸受の縦断面図、第５図は第４図のＣ
−Ｄの断面拡大図、、、第６図は第５図における媒体の
圧力分布図、第７図はこの発明の他のみぞの形状を示す
断面拡大図である。
図中、１は轍部村、２は受部村、３，４は受部、５はみ
ぞ、６は媒体流入側の側面、８は底面、９は媒体流入側
の側面に対向する側面、１０はリッジ、１３，１４は媒
体流入側の側面の深さ方向の両端、Ｑは媒体流入側の側
面の深さ方向の両端を結ぶ直線と底面とのなす角度であ
る。
第ｌ図第２図
第３図
第４図
第５図
第６図
第７図Figure 1 is a vertical cross-sectional view of a conventional grooved hydrodynamic bearing, Figure 2 is an enlarged cross-sectional view taken along line A-B in Figure 1, Figure 3 is a pressure distribution diagram of the medium in Figure 2, and Figure 4. 5 is a vertical sectional view of a hydrodynamic bearing with a groove showing an embodiment of the present invention, and FIG.
FIG. 6 is a pressure distribution diagram of the medium in FIG. 5, and FIG. 7 is an enlarged cross-sectional view showing another groove shape of the present invention. In the figure, 1 is the rut village, 2 is the receiving village, 3 and 4 are the receiving parts, 5 is the groove, 6 is the side surface on the medium inflow side, 8 is the bottom surface, 9 is the side surface opposite to the side surface on the medium inflow side, 10 is a ridge, 13 and 14 are both ends in the depth direction of the side surface on the medium inflow side, and Q is an angle between the bottom surface and a straight line connecting both ends in the depth direction of the side surface on the medium inflow side. Figure l Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
とが対向し、前記軸部材の受部４と受部材の受部３との
少なくとも一方はリツジ１０とリツジ１０に接続するみ
ぞ５とを有し、該みぞ５は媒体流入側の側面６と底面８
と媒体流入側の側面に対向する側面９とを有し、前記軸
部材の受部４と受部材の受部３とが液体を媒体として共
働するみぞ付き動圧形軸受ににおいて、前記媒体流入側
の側面６のリツジ１０の近傍に位置する部分の面のほぼ
全面は隣接するリツジ１０となめらかにつながつた曲面
であり、前記みぞ５の長さ方向のほぼ全部の部分は媒体
流入側の側面の深さ方向の両端１３，１４を結ぶ直線と
底面８とのなす角度αが大きな鈍角であり、前記軸部材
の受部４と受部材の受部３との間でのキヤビテーシヨン
の発生を防止もしくは軽減することを特徴とするみぞ付
き動圧形軸受。1 Receiving portion 4 provided on shaft member 1 and receiving portion 3 provided on receiving member 2
are opposed to each other, and at least one of the receiving part 4 of the shaft member and the receiving part 3 of the receiving member has a ridge 10 and a groove 5 connected to the ridge 10, and the groove 5 is connected to a side surface 6 on the medium inflow side. Bottom 8
and a side surface 9 opposite to the side surface on the medium inflow side, and in which the receiving portion 4 of the shaft member and the receiving portion 3 of the receiving member cooperate with each other using liquid as a medium. Almost the entire surface of the portion of the side surface 6 on the inflow side located near the ridge 10 is a curved surface smoothly connected to the adjacent ridge 10, and almost the entire length of the groove 5 is located near the ridge 10 on the medium inflow side. The angle α formed between the bottom surface 8 and the straight line connecting both ends 13 and 14 in the depth direction of the side surface is a large obtuse angle, which prevents cavitation from occurring between the receiving portion 4 of the shaft member and the receiving portion 3 of the receiving member. A grooved dynamic pressure type bearing characterized by preventing or reducing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4687877A JPS6039887B2 (en) | 1977-04-25 | 1977-04-25 | Grooved hydrodynamic bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4687877A JPS6039887B2 (en) | 1977-04-25 | 1977-04-25 | Grooved hydrodynamic bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53132642A JPS53132642A (en) | 1978-11-18 |
| JPS6039887B2 true JPS6039887B2 (en) | 1985-09-07 |
Family
ID=12759603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4687877A Expired JPS6039887B2 (en) | 1977-04-25 | 1977-04-25 | Grooved hydrodynamic bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039887B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06105088B2 (en) * | 1984-11-26 | 1994-12-21 | 松下電器産業株式会社 | Hydrodynamic bearing device |
| JPS61147885A (en) * | 1984-12-18 | 1986-07-05 | Matsushita Electric Ind Co Ltd | Fluid bearing device and its production |
| JPS61201916A (en) * | 1985-03-06 | 1986-09-06 | Nippon Fueroo Furuideikusu Kk | Bearing device |
| US4728201A (en) * | 1986-12-17 | 1988-03-01 | Kurt Manufacturing Company, Inc. | Low velocity energized gas particle bearing |
-
1977
- 1977-04-25 JP JP4687877A patent/JPS6039887B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53132642A (en) | 1978-11-18 |
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