JPH0217214Y2 - - Google Patents
Info
- Publication number
- JPH0217214Y2 JPH0217214Y2 JP1986021784U JP2178486U JPH0217214Y2 JP H0217214 Y2 JPH0217214 Y2 JP H0217214Y2 JP 1986021784 U JP1986021784 U JP 1986021784U JP 2178486 U JP2178486 U JP 2178486U JP H0217214 Y2 JPH0217214 Y2 JP H0217214Y2
- Authority
- JP
- Japan
- Prior art keywords
- rivet
- shaped groove
- outward
- ring members
- rivet hole
- 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
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- 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
- F16C19/361—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 cylindrical rollers
- F16C19/362—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 cylindrical rollers the rollers being crossed within the single row
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、工業用ロボツトの旋回部、間接
部、マニユプレーター回転部、医療機器等におい
て使用される旋回ベアリングに関する。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a slewing bearing used in the swiveling part, joint part, manipulator rotating part, medical equipment, etc. of industrial robots.
［従来の技術］
従来、この種の旋回ベアリングは、例えば第５
図に示すように、内輪１の外周面１ａ円周方向に
沿つて外方に向けて開口する外向Ｖ字溝１ｂを形
成すると共に、外輪２の内周面２ａ円周方向に沿
つて上記外向Ｖ字溝１ａに相対向する内向Ｖ字溝
２ｂを形成し、上記外輪２の内向Ｖ字溝２ａの溝
底ラインに沿つて上下の外輪部材３ａ，３ｂに二
分割し、上記内外輪１，２の各内外向Ｖ字溝１
ｂ，２ｂ間にローラ４を介装した後上記上下の外
輪部材３ａ，３ｂをボルト５ａとナツト５ｂとで
結合してなるものが知られている。[Prior Art] Conventionally, this type of slewing bearing has, for example, a fifth
As shown in the figure, an outward V-shaped groove 1b is formed along the circumferential direction of the outer circumferential surface 1a of the inner ring 1, and an outward V-shaped groove 1b is formed along the circumferential direction of the inner circumferential surface 2a of the outer ring 2. An inward V-shaped groove 2b facing the V-shaped groove 1a is formed, and the outer ring 2 is divided into upper and lower outer ring members 3a, 3b along the groove bottom line of the inward V-shaped groove 2a, and the inner and outer rings 1, 2, each internal and external V-shaped groove 1
It is known that the upper and lower outer ring members 3a and 3b are connected with bolts 5a and nuts 5b after a roller 4 is interposed between them.
［考案が解決しようとする問題点］
しかしながら、このような従来の旋回ベアリン
グにおいては、ローラ４を組み込むために二分割
された上下の外部材３ａ，３ｂをボルト５ａとナ
ツト５ｂとで結合しているので、ボルト５ａが挿
入されるボルト孔６このボルト５ａを挿入するた
めにその直径がボルト５ａの直径よりも幾分大き
めに形成されており、このためにボルト５ａとボ
ルト孔６との間に隙間ができ、この隙間のために
使用途中において上記上下の外輪部材３ａ，３ｂ
の間にずれが生じ、これが原因で正確な回転が不
可能になり、上下の外輪部材３ａ，３ｂの間に振
動が生じてローラ転走面の損傷の原因にもなると
いう問題があつたほか、これらボルト５ａとナツ
ト５ｂとはその外周又は内周にネジを切らなけれ
ばならなないのでこれらの半径方向寸法をある一
定の大きさより小さくすることが困難であり、こ
のために外輪２の半径方向の厚さを一定の厚さよ
り薄くすることができないという問題もあつた。[Problems to be solved by the invention] However, in such a conventional swing bearing, in order to incorporate the roller 4, the upper and lower outer members 3a and 3b, which are divided into two parts, are connected with a bolt 5a and a nut 5b. Therefore, the diameter of the bolt hole 6 into which the bolt 5a is inserted is formed to be somewhat larger than the diameter of the bolt 5a. A gap is created between the upper and lower outer ring members 3a and 3b during use.
There was a problem in that misalignment occurred between the rollers, which made accurate rotation impossible, and caused vibrations between the upper and lower outer ring members 3a and 3b, causing damage to the roller rolling surface. Since these bolts 5a and nuts 5b must be threaded on their outer or inner circumferences, it is difficult to make their radial dimensions smaller than a certain size. There was also the problem that the thickness in the direction could not be made thinner than a certain thickness.
［問題を解決するための手段］
本考案は、かかる観点に鑑みて創案されたもの
で、上下に二分割された輪部材の間にずれが生じ
るようなことがなく、また、外輪又は内輪の半径
方向厚さを薄くすることもできる旋回ベアリング
を提供するものである。[Means for solving the problem] The present invention has been devised in view of this point of view, and eliminates the possibility of misalignment between the upper and lower halves of the ring member. To provide a slewing bearing whose radial thickness can also be reduced.
すなわち、本考案は、内輪の外周面円周方向に
沿つて外方に向けて開口する外向Ｖ字溝を形成す
ると共、外輪の内周面円周方向に沿つて上記外向
Ｖ字溝に相対向する内向Ｖ字溝を形成し、上記内
外輪のいれかをそのＶ字溝の溝底ラインに沿つて
上下の輪部材に二分割し、上記内外輪の各内外向
Ｖ字溝の間に転動体を介装した後二分割された上
記上下の輪部材を結合部材で結合してなる旋回ベ
アリングにおいて、上記上下の輪部材にはその一
方から他方に向けて上下方向に貫通するリベツト
孔を開設し、このリベツト孔の上下開口部にはリ
ベツト頭部又はカシメ部が収容される座部を設け
ると共にに、少なくともいずれか一方の座部を外
方に向けて拡開するテーパ形状とし、上記リベツ
ト孔内にリベツトを打込んでテーパ状座部でかし
め、上記上下の輪部材を半径方向に相対移動不能
結に合してなる旋回ベアリングを提供するもので
ある。 That is, the present invention forms an outward V-shaped groove that opens outward along the circumferential direction on the outer circumferential surface of the inner ring, and also forms an outward V-shaped groove that opens outward along the circumferential direction on the inner circumferential surface of the outer ring. one of the inner and outer rings is divided into upper and lower ring members along the groove bottom line of the V-shaped groove, and between each of the inner and outer V-shaped grooves of the inner and outer rings; In a slewing bearing formed by interposing rolling elements and connecting the upper and lower ring members, which are divided into two parts, with a connecting member, the upper and lower ring members are provided with rivet holes that penetrate in the vertical direction from one side to the other. The upper and lower openings of the rivet hole are provided with seats in which the rivet head or the caulking part is accommodated, and at least one of the seats is tapered to expand outward. A slewing bearing is provided in which a rivet is driven into a rivet hole and caulked with a tapered seat, and the upper and lower ring members are coupled in a radially immovable manner.
本考案において、転動体を組み込むために二分
割の対象となるものはその内輪、外輪のいずれか
であつてもよく、また、転動体ついてはそれがロ
ーラであつても、ボールであつてもよい。 In the present invention, the object to be divided into two in order to incorporate the rolling elements may be either the inner ring or the outer ring, and the rolling elements may be rollers or balls. .
また、本考案において、二分割された上下の輪
部材は少なくとも３本以上のリベツトを使用して
結合され、また、これらのリベツトが打込まれる
リベツト孔の上下開口部に形成される座部につい
ては、少なくとも上下いずれか一方の座部がカシ
メ部を収容すべく外方に向けて拡開する形状のテ
ーパ座ぐりであり、且つ、リベツトをリベツト孔
内に打込んでかしめた際にその頭部あるいはカシ
メ部が内輪又は外輪の上下面から突出しなければ
よく、かしめを行なわないリベツト頭部を収容す
る座部については、その底部が平面である平面座
ぐりとする等、適宜形状を変更して差支えない。 In addition, in the present invention, the upper and lower ring members which are divided into two parts are joined using at least three or more rivets, and the seats are formed at the upper and lower openings of the rivet holes into which these rivets are driven. is a tapered counterbore in which at least one of the upper and lower seats expands outward to accommodate the caulking part, and when the rivet is driven into the rivet hole and caulked, the head of the rivet The part or the caulking part need not protrude from the upper and lower surfaces of the inner ring or outer ring, and the shape of the seat that accommodates the rivet head that is not to be caulked may be changed as appropriate, such as by making it a flat counterbore with a flat bottom. No problem.
さらに、本考案において、各転動体の間の間隔
を維持し、また、転動体がローラである場合にそ
の倒れを防止するためのリテーナについては、使
用してもしなくてもよいが、内外輪の相対的な回
転運動をより円滑にするために好ましくは使用す
るのがよい。 Furthermore, in the present invention, a retainer for maintaining the distance between each rolling element and preventing the rolling element from falling down when the rolling element is a roller may or may not be used, but It is preferably used to make the relative rotational movement of the
［作 用］
本考案によれば、上下の輪部材に形成したリベ
ツト孔内にリベツトを打込んでこのリベツトをか
しめた際に、リベツトがその半径方向に脹らみ、
これによつてリベツトの外周面がリベツト孔の内
周面に密着し、上下の輪部材が互いに強固に結合
されてずれを生じないほか、リベツトはその直径
を小さく形成することができるのでそれだけ内輪
又は外輪の半径方向厚さを小さくすることができ
る。[Function] According to the present invention, when a rivet is driven into the rivet hole formed in the upper and lower ring members and the rivet is caulked, the rivet expands in the radial direction,
As a result, the outer circumferential surface of the rivet comes into close contact with the inner circumferential surface of the rivet hole, and the upper and lower ring members are firmly connected to each other so that no slippage occurs.In addition, the rivet can be formed with a smaller diameter, so that the inner ring Alternatively, the radial thickness of the outer ring can be reduced.
［実施例］
以下、添附図面に示す実施例に基いて、本考案
の旋回ベアリングを具体的に説明する。[Example] Hereinafter, the swing bearing of the present invention will be specifically explained based on the example shown in the accompanying drawings.
第１図ないし第３図において、本考案の実施例
に係る旋回ベアリングが示されている。この旋回
ベアリングは、外周面１ａ円周方向に沿つて形成
され外方に向けて開口する外向Ｖ字溝１ｂを有す
る内輪１と、内周面２ａ円周方向に沿つて上記外
向Ｖ字溝１ｂに相対向する内向Ｖ字溝２ｂが形成
されるようにその内向Ｖ字溝２ｂの溝底ラインか
ら上下に二分割された上下の外輪部材３ａ，３ｂ
で構成された外輪２と、これら各内外輪１，２の
各内外向Ｖ字溝１ｂ、２ｂの間において交互に傾
斜するように介装された多数のローラ４と、これ
ら各ローラ４の間の間隔を維持すると共にその倒
れを防止して上記内外輪１，２の相対的な回転運
動を円滑にする図示外のスペーサーリテーナとで
構成されており、上記外輪２は、内輪１との間に
ローラ４を組込んだ後、その上下の外輪部材３
ａ，３ｂをリベツト７で結合することにより形成
されている。 1 to 3, a slewing bearing according to an embodiment of the present invention is shown. This swing bearing includes an inner ring 1 having an outward V-shaped groove 1b formed along the circumferential direction of an outer circumferential surface 1a and opening outward, and an inner ring 1 having an outward V-shaped groove 1b formed along the circumferential direction of an inner circumferential surface 2a. Upper and lower outer ring members 3a, 3b are divided into upper and lower halves from the groove bottom line of the inward V-shaped groove 2b so that an inward V-shaped groove 2b facing opposite to the inward V-shaped groove 2b is formed.
A large number of rollers 4 are interposed between the inner and outer V-shaped grooves 1b and 2b of the inner and outer rings 1 and 2 so as to alternately incline between the outer ring 2 and the inner and outer rings 1 and 2. and a spacer retainer (not shown) that maintains the gap between the inner and After installing the roller 4 in the
It is formed by joining a and 3b with rivets 7.
この実施例において、上記上下の外輪部材３
ａ，３ｂをその一方から他方に向けて上下方向に
貫通するリベツト孔８はこのリベツト孔８内に打
込まれるリベツト７の外径寸法とほぼ等しいか、
あるいは、このリベツト７の外径寸法より僅かに
大きい程度の大きさの内径で開設され、また、こ
のリベツト孔８には、その上下いずれか一方の開
口部にリベツト７の頭部７ａを収容するための底
面平面の平面座ぐり８ａが形成されていると共に
他方の開口部にリベツト７のカシメ部７ｂを収容
するための外方に向けて拡開する形状のテーパ面
を備えたテーパ座ぐり８ｂが形成されており、リ
ベツト７をそのリベツト孔８内に打込んでかしめ
た際にその頭部７ａとカシメ部７ｂとが外輪２の
上下面から突出しないようになつている。従つ
て、このリベツト孔８内にリベツト７を打込んで
このリベツト７をかしめた際に、リベツト７はそ
の半径方向に脹らみ、リベツト７の外周面がリベ
ツト孔８の内周面に強固に密着するようになつて
いる。 In this embodiment, the upper and lower outer ring members 3
The rivet hole 8 that passes through a and 3b in the vertical direction from one side to the other is approximately equal to the outer diameter of the rivet 7 to be driven into the rivet hole 8.
Alternatively, the rivet hole 8 has an inner diameter slightly larger than the outer diameter of the rivet 7, and the head 7a of the rivet 7 is accommodated in either the upper or lower opening of the rivet hole 8. A taper counterbore 8b is formed with a planar counterbore 8a on the bottom plane for the purpose of the rivet, and has a tapered surface expanding outward for accommodating the caulked portion 7b of the rivet 7 in the other opening. is formed so that when the rivet 7 is driven into the rivet hole 8 and caulked, the head 7a and caulked portion 7b do not protrude from the upper and lower surfaces of the outer ring 2. Therefore, when the rivet 7 is driven into the rivet hole 8 and caulked, the rivet 7 expands in the radial direction, and the outer peripheral surface of the rivet 7 is firmly attached to the inner peripheral surface of the rivet hole 8. It has come to be closely attached to
次に、第４図は、本考案の他の実施例を示すも
のであり、内輪１を上下の内輪部材９ａ，９ｂに
二分割し、また、リベツト７としてその両端にカ
シメ部７ｂを有するものを使用した以外は上記実
施例と同様である。 Next, FIG. 4 shows another embodiment of the present invention, in which the inner ring 1 is divided into upper and lower inner ring members 9a and 9b, and has caulked portions 7b at both ends as rivets 7. This example is the same as the above example except that .
［考案の効果］
本考案によれば、内外輪の間にローラやボール
等の転動体を組込ために二分割された上下の輪部
材を、これら上下の輪部材に形成したリベツト孔
内にリベツトを打込み、このリベツトをテーパ状
に形成された座部でかしめることにより結合して
いるので、リベツトをかしめた際にこのリベツト
がその半径方向に脹らんでリベツトの外周面がリ
ベツト孔の内周面に密着し、上下の輪部材が互い
に強固に結合されて使用途中においてずれを生じ
るようなことがなく、長期間に亘つて正確で円滑
な回転が可能になり、転動体の転走面の耐久性も
向上する。[Effects of the invention] According to the invention, the upper and lower ring members, which are divided into two to incorporate rolling elements such as rollers and balls between the inner and outer rings, are inserted into the riveted holes formed in the upper and lower ring members. They are joined by driving a rivet and caulking this rivet with a tapered seat, so when the rivet is caulked, the rivet expands in its radial direction and the outer circumferential surface of the rivet aligns with the rivet hole. It adheres closely to the inner circumferential surface, and the upper and lower ring members are firmly connected to each other so that they do not shift during use, allowing accurate and smooth rotation over a long period of time, and preventing the rolling elements from rolling. The durability of the surface is also improved.
しかも、本考案にれば、その外周面にネジを切
る必要のないリベツトを使用して上下の輪部材を
結合しているので、その外形寸法を小さくすると
ことができ、それだけ上下の輪部材で構成される
内輪又は外輪の半径方向の厚さを薄くすることが
でき、旋回ベアリングの内外径の寸法差、すなわ
ち旋回ベアリングの半径方向の厚さを薄くするこ
とができてコンパクト化を達成することができ
る。 Moreover, according to the present invention, since the upper and lower ring members are joined together using rivets that do not require threading on their outer peripheral surfaces, their external dimensions can be reduced, and the upper and lower ring members can be made that much smaller. The radial thickness of the inner ring or outer ring can be made thinner, and the dimensional difference between the inner and outer diameters of the slewing bearing, that is, the radial thickness of the slewing bearing can be made thinner, thereby achieving compactness. Can be done.
第１図は本考案の実施例に係る旋回ベアリング
の縦断面図、第２図は第１図の平面図、第３図は
第２図の−線断面図、第４図は他の実施例を
示す第３図と同様の断面図、第５図は従来の旋回
ベアリングを示す第１図と同様の断面図である。
１……内輪、１ａ……外周面、１ｂ……外向Ｖ
字溝、２……外輪、２ａ……内周面、２ｂ……内
向Ｖ字溝、３ａ、３ｂ、９ａ、９ｂ……輪部材、
４……ローラ（転動体）、７……リベツト、７ａ
……頭部、７ｂ……カシメ部、８……リベツト
孔、８ａ……平面座ぐり（座部）、８ｂ……テー
パ座ぐり（座部）。
Fig. 1 is a longitudinal sectional view of a swing bearing according to an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 is another embodiment. FIG. 5 is a sectional view similar to FIG. 1 showing a conventional swing bearing. 1...Inner ring, 1a...Outer peripheral surface, 1b...Outward V
groove, 2...outer ring, 2a...inner peripheral surface, 2b...inward V-shaped groove, 3a, 3b, 9a, 9b...ring member,
4...Roller (rolling element), 7...Rivet, 7a
. . . Head, 7b . . . Caulked portion, 8 . . . Rivet hole, 8a . . . Flat counterbore (seat portion), 8b .
Claims (1)
開口する外向Ｖ字溝を形成すると共に、外輪の
内周面円周方向に沿つて上記外向Ｖ字溝に相対
向する内向Ｖ字溝を形成し、上記内外輪のいず
れかをそのＶ字溝の溝底ラインに沿つて上下の
輪部材に二分割し、上記内外輪の各内外向Ｖ字
溝の間に転動体を介装した後二分割された上記
上下の輪部材を結合部材で結合してなる旋回ベ
アリングにおいて、上記上下の輪部材にはその
一方から他方に向けて上下方向に貫通するリベ
ツト孔を開設し、このリベツト孔の上下開口部
にはリベツト頭部又はカシメ部が収容される座
部を設けると共に、少なくともいずれか一方の
座部を外方に向けて拡開するテーパ形状とし、
上記リベツト孔内にリベツトを打込んでテーパ
状座部でかしめ、上記上下の輪部材を半径方向
に相対移動不能に結合することを特徴とする旋
回ベアリング。 (2) リベツト孔の上下開口部に設けられた座部が
いずれも外方に向けて拡開するテーパ状に形成
されていることを特徴とする請求項１記載の旋
回ベアリング。[Claims for Utility Model Registration] (1) An outward V-shaped groove is formed that opens outward along the circumferential direction of the outer circumferential surface of the inner ring, and an outward V-shaped groove that opens outward along the circumferential direction of the inner circumferential surface of the outer ring is formed. An inward V-shaped groove facing the V-shaped groove is formed, and one of the inner and outer rings is divided into upper and lower ring members along the groove bottom line of the V-shaped groove, and each inner and outer V-shaped groove of the inner and outer rings is formed. In a slewing bearing formed by inserting a rolling element between the grooves and then connecting the upper and lower ring members, which are divided into two, with a connecting member, the upper and lower ring members have a vertical direction from one side to the other. A penetrating rivet hole is provided, and the upper and lower openings of the rivet hole are provided with seat portions in which the rivet head or the caulking portion is accommodated, and at least one of the seat portions is tapered to expand outward. Shape and
A slewing bearing characterized in that a rivet is driven into the rivet hole and swaged by a tapered seat portion to connect the upper and lower ring members in a radial direction so as to be immovable relative to each other. (2) The swing bearing according to claim 1, wherein the seats provided at the upper and lower openings of the rivet hole are each formed in a tapered shape that expands outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986021784U JPH0217214Y2 (en) | 1986-02-18 | 1986-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986021784U JPH0217214Y2 (en) | 1986-02-18 | 1986-02-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62134925U JPS62134925U (en) | 1987-08-25 |
| JPH0217214Y2 true JPH0217214Y2 (en) | 1990-05-14 |
Family
ID=30818545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986021784U Expired JPH0217214Y2 (en) | 1986-02-18 | 1986-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0217214Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5772297B2 (en) * | 2011-06-28 | 2015-09-02 | 株式会社ジェイテクト | Raceway fixing structure and raceway fixing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS611716B2 (en) * | 1976-12-27 | 1986-01-20 | Suwa Seikosha Kk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS611716U (en) * | 1984-06-12 | 1986-01-08 | 日本精工株式会社 | Cross roller bearing |
-
1986
- 1986-02-18 JP JP1986021784U patent/JPH0217214Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS611716B2 (en) * | 1976-12-27 | 1986-01-20 | Suwa Seikosha Kk |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62134925U (en) | 1987-08-25 |
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