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JP2008002486A - Cylindrical roller bearings and cages for cylindrical roller bearings - Google Patents

Cylindrical roller bearings and cages for cylindrical roller bearings Download PDF

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JP2008002486A
JP2008002486A JP2006169919A JP2006169919A JP2008002486A JP 2008002486 A JP2008002486 A JP 2008002486A JP 2006169919 A JP2006169919 A JP 2006169919A JP 2006169919 A JP2006169919 A JP 2006169919A JP 2008002486 A JP2008002486 A JP 2008002486A
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cylindrical roller
guide
pair
lubricant
roller bearing
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JP4618197B2 (en
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Shinji Fukuda
晋治 福田
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JTEKT Corp
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JTEKT Corp
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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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

【課題】 保持器を改良して潤滑性を向上させた円筒ころ軸受および円筒ころ軸受用保持器を提供する。
【解決手段】 保持器5の各ポケット13に、円筒ころ4の周面6を案内する１対の周面案内面21,22、および円筒ころ4の１対の底面をそれぞれ案内する１対の底面案内面が設けられている。各周面案内面21,22は、軸方向両側に凹部31が形成されることにより得られる２つの案内用凸部32を有しており、凹部31の径方向外側部分に、凹部31にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部33が形成されている。
【選択図】 図２PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing and a cage for a cylindrical roller bearing which are improved in lubricity by improving the cage.
SOLUTION: A pair of peripheral surface guide surfaces 21 and 22 for guiding a peripheral surface 6 of a cylindrical roller 4 and a pair of bottom surfaces for guiding a pair of bottom surfaces of the cylindrical roller 4 to each pocket 13 of a cage A bottom guide surface is provided. Each circumferential surface guide surface 21, 22 has two guide convex portions 32 obtained by forming concave portions 31 on both sides in the axial direction, and is in the concave portion 31 on the radially outer portion of the concave portion 31. Lubricant holding convex portions 33 that suppress the movement of the lubricant radially outward are formed.
[Selection] Figure 2

Description

この発明は、円筒ころ軸受および円筒ころ軸受用保持器に関し、特にその潤滑性を向上させた円筒ころ軸受および円筒ころ軸受用保持器に関する。   The present invention relates to a cylindrical roller bearing and a cylindrical roller bearing cage, and more particularly to a cylindrical roller bearing and a cylindrical roller bearing cage that have improved lubricity.

外輪、内輪、両輪の間に配置された複数の円筒ころ、およびこれらの円筒ころを収容する複数のポケットを有している保持器を備えている円筒ころ軸受は、よく知られているが、高速回転の工作機械に使用される場合などのために、その潤滑性を向上させることが課題となっている。特許文献１には、転がり軸受の潤滑性を向上させるために、保持器のポケットの形状を変更することが提案されている。
特開２００５−３１４５号公報 Cylindrical roller bearings including a outer ring, an inner ring, a plurality of cylindrical rollers arranged between the two rings, and a cage having a plurality of pockets for accommodating these cylindrical rollers are well known, For example, when it is used in a high-speed machine tool, it is a problem to improve its lubricity. Patent Document 1 proposes changing the shape of the cage pocket in order to improve the lubricity of the rolling bearing.
JP-A-2005-3145

上記特許文献１のものは、玉軸受における潤滑性の向上が主であり、円筒ころ軸受では、十分な効果を得ることが難しいという問題があった。   The thing of the said patent document 1 mainly improved the lubricity in a ball bearing, and there existed a problem that it was difficult to acquire sufficient effect in a cylindrical roller bearing.

この発明の目的は、保持器を改良して潤滑性を向上させた円筒ころ軸受および円筒ころ軸受用保持器を提供することにある。   An object of the present invention is to provide a cylindrical roller bearing and a cage for a cylindrical roller bearing in which the cage is improved to improve lubricity.

第１の発明による円筒ころ軸受は、外輪、内輪、両輪の間に配置された複数の円筒ころ、およびこれらの円筒ころを収容する複数のポケットを有している保持器を備えており、保持器の各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受において、保持器の各周面案内面は、軸方向両側に凹部が形成されることにより得られる少なくとも１つの案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とするものである。   A cylindrical roller bearing according to a first aspect of the present invention includes an outer ring, an inner ring, a plurality of cylindrical rollers disposed between the two rings, and a cage having a plurality of pockets for accommodating these cylindrical rollers. In the cylindrical roller bearing, in each pocket of the container, a pair of peripheral surface guide surfaces that guide the peripheral surface of the cylindrical roller and a pair of bottom surface guide surfaces that respectively guide the pair of bottom surfaces of the cylindrical roller are provided. Each circumferential surface guide surface of the cage has at least one guide convex portion obtained by forming concave portions on both sides in the axial direction, and the lubricant in the concave portion is formed on the radially outer portion of the concave portion. Lubricant holding convex portions that suppress the outward movement in the radial direction are formed.

第２の発明による円筒ころ軸受は、外輪、内輪、両輪の間に配置された複数の円筒ころ、およびこれらの円筒ころを収容する複数のポケットを有している保持器を備えており、保持器の各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受において、保持器の各底面案内面は、径方向外側の部分に凹部が形成されることにより得られる案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とするものである。   A cylindrical roller bearing according to a second invention includes an outer ring, an inner ring, a plurality of cylindrical rollers disposed between the two rings, and a cage having a plurality of pockets for accommodating these cylindrical rollers. In the cylindrical roller bearing, in each pocket of the container, a pair of peripheral surface guide surfaces that guide the peripheral surface of the cylindrical roller and a pair of bottom surface guide surfaces that respectively guide the pair of bottom surfaces of the cylindrical roller are provided. Each bottom guide surface of the cage has a guide convex portion obtained by forming a concave portion in the radially outer portion, and the radial direction of the lubricant in the concave portion in the radially outer portion of the concave portion. A lubricant holding convex portion that suppresses outward movement is formed.

円筒ころ軸受は、外輪および内輪のいずれか一方につばが設けられることがあり、ＪＩＳ形式記号のＮＵ，ＮＪ，ＮＵＰ，Ｎ，ＮＦおよびＮＨのいずれであってもよい。また、外輪回転であってもよく、内輪回転であってもよい。   The cylindrical roller bearing may be provided with a collar on either the outer ring or the inner ring, and may be any one of JIS type symbols NU, NJ, NUP, N, NF and NH. Moreover, outer ring rotation may be sufficient and inner ring rotation may be sufficient.

保持器は、通常、合成樹脂製とされるが、合成樹脂に限定されるものではない。   The cage is usually made of synthetic resin, but is not limited to synthetic resin.

第１の発明による円筒ころ軸受用保持器は、円筒ころを収容する複数のポケットが形成されており、各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受用保持器において、各周面案内面は、軸方向両側に凹部が形成されることにより得られる少なくとも１つの案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とするものである。   A cage for a cylindrical roller bearing according to a first invention is formed with a plurality of pockets for accommodating cylindrical rollers, and a pair of peripheral surface guide surfaces for guiding the peripheral surface of the cylindrical rollers in each pocket, and the cylindrical rollers In the cylindrical roller bearing retainer provided with a pair of bottom surface guide surfaces that respectively guide the pair of bottom surfaces, each circumferential surface guide surface is obtained by forming recesses on both sides in the axial direction. It has two guide convex portions, and a lubricant holding convex portion that suppresses the outward movement of the lubricant in the concave portion in the radial direction is formed on the radially outer portion of the concave portion. Is.

第２の発明による円筒ころ軸受用保持器は、円筒ころを収容する複数のポケットが形成されており、各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受用保持器において、各底面案内面は、径方向外側の部分に凹部が形成されることにより得られる案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とするものである。   A cage for a cylindrical roller bearing according to a second invention has a plurality of pockets for accommodating cylindrical rollers, a pair of peripheral surface guide surfaces for guiding the peripheral surface of the cylindrical rollers in each pocket, and the cylindrical rollers In the cylindrical roller bearing retainer provided with a pair of bottom surface guide surfaces that respectively guide the pair of bottom surfaces, each bottom surface guide surface is obtained by forming a recess in a radially outer portion. A convex portion for holding a lubricant that suppresses the outward movement of the lubricant in the concave portion in the radial direction is formed on the radially outer portion of the concave portion. is there.

第１の発明による円筒ころ軸受および円筒ころ軸受用保持器において、少なくとも１つの案内用凸部は、例えば、円筒ころの軸方向中心を介して対称位置にあり軸方向から見て凹円弧状の２つの凸部とされる。これら２つの凸部の間および各凸部と底面案内面との間には、潤滑剤を保持可能な凹部が形成され、これらの凹部の径方向外側部分に潤滑剤保持用凸部が形成されることで、これらの凹部が潤滑剤溜まりとして有効に機能する。   In the cylindrical roller bearing and the cylindrical roller bearing retainer according to the first invention, the at least one guide convex portion is, for example, in a symmetrical position via the axial center of the cylindrical roller and has a concave arc shape when viewed from the axial direction. Two convex portions are provided. Between these two convex portions and between each convex portion and the bottom surface guide surface, concave portions capable of holding the lubricant are formed, and convex portions for retaining the lubricant are formed on the radially outer portions of these concave portions. Thus, these recesses function effectively as a lubricant reservoir.

第２の発明による円筒ころ軸受および円筒ころ軸受用保持器において、案内用凸部は、例えば、１つとされ、その形状が略馬蹄形とされる。各底面案内面は、軸方向から見て、互いに同心の円弧状内周および円弧状外周と径方向にのびる１対の区画用法線とによって、その輪郭形状が形成され、凸部は、その径方向内方端が円弧状内周上にあり、その径方向外方端が円弧状外周より内方に位置させられる。凸部の両縁と区画用法線との間には間隔があってもよく、間隔がなくても（凸部の両縁が区画用法線上にあっても）よい。凸部の両縁と区画用法線との間に間隔がある場合の凹部の形状は、円弧状外周および１対の区画用法線からなる外周形状を有する軸方向から見て略Ｕ字状となる。この凹部の径方向外側部分に潤滑剤保持用凸部が形成されることで、この凹部が潤滑剤溜まりとして有効に機能する。   In the cylindrical roller bearing and the cylindrical roller bearing retainer according to the second aspect of the present invention, the guide convex portion is, for example, one and the shape thereof is substantially horseshoe-shaped. Each bottom guide surface has a contour shape formed by a concentric arc-shaped inner periphery and arc-shaped outer periphery and a pair of partition normals extending in the radial direction when viewed from the axial direction. The inner end in the direction is on the arcuate inner periphery, and the radially outer end is positioned inward from the arcuate outer periphery. There may be an interval between both edges of the convex portion and the partition normal, or there may be no interval (even if both edges of the convex portion are on the partition normal). The shape of the concave portion when there is a gap between both edges of the convex portion and the partition normal is substantially U-shaped when viewed from the axial direction having an outer periphery formed by an arcuate outer periphery and a pair of partition normals. . By forming the lubricant holding convex portion on the radially outer portion of the concave portion, the concave portion functions effectively as a lubricant reservoir.

この発明の円筒ころ軸受および円筒ころ軸受用保持器によると、潤滑剤の径方向外方への移動が潤滑剤保持用凸部によって抑えられるので ポケット内部の潤滑剤が遠心力によって飛散することが抑制され、潤滑の信頼性を向上させることができる。   According to the cylindrical roller bearing and the cylindrical roller bearing retainer of the present invention, since the lubricant is prevented from moving radially outward by the lubricant retaining convex portion, the lubricant inside the pocket may be scattered by centrifugal force. It is suppressed and the reliability of lubrication can be improved.

この発明の実施の形態を、以下図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、この発明による保持器の一部を示し、図２および図３は、この発明による円筒ころ軸受の一部を示している。   FIG. 1 shows a part of a cage according to the present invention, and FIGS. 2 and 3 show a part of a cylindrical roller bearing according to the present invention.

円筒ころ軸受(1)は、内周に軌道溝が形成された外輪(2)、外周に軌道溝が形成された内輪(3)、両輪(2)(3)の間に周方向に所定間隔で配置された複数の円筒ころ(4)、およびこれらの円筒ころ(4)を保持する保持器(5)を備えている。   Cylindrical roller bearings (1) have an outer ring (2) with a raceway groove on the inner circumference, an inner ring (3) with a raceway groove on the outer circumference, and a predetermined interval in the circumferential direction between both wheels (2) (3). And a plurality of cylindrical rollers (4) arranged in the above, and a cage (5) for holding these cylindrical rollers (4).

保持器(5)は、合成樹脂製で、軸方向に所定間隔をおいて配置された１対の円環状部(11)と、周方向に所定間隔をおいて設けられて両円環状部(11)間を連結する複数の柱部(12)とからなり、１対の柱部(12)と、これらの両側にある円環状部(11)の部分とによって円筒ころ(4)を収容するためのポケット(13)が形成されている。   The cage (5) is made of a synthetic resin and has a pair of annular portions (11) arranged at predetermined intervals in the axial direction, and both annular portions (11) provided at predetermined intervals in the circumferential direction. 11) A cylindrical roller (4) is accommodated by a pair of pillars (12) and annular ring parts (11) on both sides of the pillars (12). A pocket (13) is formed for this purpose.

各ポケット(13)には、円筒ころ(4)の周面（転走面）(6)を案内する１対の周面案内面(21)(22)と、円筒ころ(4)の１対の底面(7)(8)をそれぞれ案内する１対の底面案内面(23)(24)とが設けられている。   Each pocket (13) has a pair of circumferential guide surfaces (21) (22) for guiding the circumferential surface (rolling surface) (6) of the cylindrical roller (4) and a pair of cylindrical rollers (4). Are provided with a pair of bottom surface guide surfaces (23) and (24) for respectively guiding the bottom surfaces (7) and (8).

周面案内面(21)(22)は、その全面で円筒ころ(4)の周面(6)を案内するのではなく、各周面案内面(21)(22)には、３つの横断面凹円弧状の潤滑剤保持用凹部(31)と２つの横断面凹円弧状の案内用凸部(32)とが軸方向に交互に形成され、２つの案内用凸部(32)で円筒ころ(4)の周面(6)を案内するようになされている。これにより、円筒ころ(4)の周面(6)と周面案内面(21)(22)との間の摩擦力が低減されるとともに、凹部(31)に潤滑剤が溜められることで潤滑性向上が図られている。   The circumferential guide surfaces (21) and (22) do not guide the circumferential surface (6) of the cylindrical roller (4) over the entire surface, but each circumferential guide surface (21) (22) has three crossings. Concave arc-shaped lubricant retaining recesses (31) and two cross-sectional concave arc-shaped guide convex portions (32) are formed alternately in the axial direction, and the two guide convex portions (32) are cylindrical. The peripheral surface (6) of the roller (4) is guided. This reduces the frictional force between the circumferential surface (6) of the cylindrical roller (4) and the circumferential surface guide surfaces (21) (22), and lubricates the lubricant by accumulating the lubricant in the recess (31). Improvements are being made.

各潤滑剤保持用凹部(31)の径方向外側部分には、案内用凸部(32)の突出量よりわずかに小さい突出量を有し、凹部(31)にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部(33)が形成されている。潤滑剤保持用凸部(33)がない場合には、遠心力によって、凹部(31)に溜まっている潤滑剤が径方向外方に飛散して、円筒ころ(4)の周面(6)と周面案内面(21)(22)との間の潤滑に寄与する潤滑剤が少なくなるが、潤滑剤の径方向外方への飛散が潤滑剤保持用凸部(33)によって防止されることで、潤滑性がより向上している。潤滑剤保持用凸部(33)の突出量は、案内用凸部(32)の突出量よりわずかに小さいことから、潤滑剤保持用凸部(33)は円筒ころ(4)の周面(6)に接触することはなく、円筒ころ(4)の周面(6)と周面案内面(21)(22)との間の摩擦力に影響を及ぼさないようになっている。   The radially outer portion of each lubricant retaining recess (31) has a protruding amount slightly smaller than the protruding amount of the guiding protruding portion (32), and the radially outer side of the lubricant in the recessed portion (31). A lubricant holding convex portion (33) that suppresses the movement to the is formed. In the absence of the lubricant retaining convex portion (33), the lubricant accumulated in the concave portion (31) is scattered radially outward by centrifugal force, and the peripheral surface (6) of the cylindrical roller (4). The lubricant that contributes to lubrication between the peripheral surface guide surfaces (21) and (22) is reduced, but the lubricant is prevented from splashing radially outward by the lubricant holding convex portion (33). Thus, the lubricity is further improved. Since the protruding amount of the lubricant holding convex portion (33) is slightly smaller than the protruding amount of the guiding convex portion (32), the lubricant holding convex portion (33) is a peripheral surface of the cylindrical roller (4) ( 6), the frictional force between the peripheral surface (6) of the cylindrical roller (4) and the peripheral surface guide surfaces (21) (22) is not affected.

また、底面案内面(23)(24)は、その全面で円筒ころ(4)の底面(7)(8)を案内するのではなく、各底面案内面(23)(24)には、軸方向に対して垂直な面を有し径方向内側径方向外方にのびる略馬蹄形とされた案内用凸部(37)が形成され、この凸部(37)を径方向外方から囲むように軸方向に対して垂直な面を有する潤滑剤保持用凹部(36)が形成されることにより、案内用凸部(37)で円筒ころ(4)の底面(7)(8)を案内するようになされている。これにより、円筒ころ(4)の底面(7)(8)と底面案内面(23)(24)との間の摩擦力が低減されるとともに、潤滑剤保持用凹部(36)に潤滑剤が溜められることで潤滑性向上が図られている。なお、案内用凸部(37)の形状は、略馬蹄形に限られるものではなく、半円状や方形状であってもよいが、その径方向最外側部分には凹部が形成されて、円筒ころ(4)の底面(7)(8)の相対的に径方向内側に位置する部分に案内用凸部(37)が当接するようになされる。これにより、案内用凸部(37)は、円筒ころ(4)の相対的に公転速度が遅い部分を案内することになり、案内用凸部(37)への負担が軽減される。   In addition, the bottom guide surfaces (23) and (24) do not guide the bottom surfaces (7) and (8) of the cylindrical rollers (4) over the entire surface, but the bottom guide surfaces (23) and (24) have shafts. A guide projection (37) having a substantially horseshoe shape having a surface perpendicular to the direction and extending radially outward and radially outward is formed, so that the projection (37) is surrounded from the radially outward side. By forming the lubricant retaining recess (36) having a surface perpendicular to the axial direction, the bottom surface (7) (8) of the cylindrical roller (4) is guided by the guide convex portion (37). Has been made. As a result, the frictional force between the bottom surface (7) (8) of the cylindrical roller (4) and the bottom surface guide surfaces (23) (24) is reduced, and the lubricant is retained in the lubricant retaining recess (36). The lubricity is improved by being stored. Note that the shape of the guide convex portion (37) is not limited to a substantially horseshoe shape, but may be a semicircular shape or a square shape. The guide convex portion (37) is brought into contact with the portion located on the relatively radial inner side of the bottom surface (7), (8) of the roller (4). As a result, the guide convex portion (37) guides the portion of the cylindrical roller (4) having a relatively low revolution speed, and the burden on the guide convex portion (37) is reduced.

各潤滑剤保持用凹部(36)の径方向外側部分には、案内用凸部(37)の突出量よりわずかに小さい突出量を有し、凹部(36)にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部(38)が形成されている。潤滑剤保持用凸部(38)がない場合には、遠心力によって、凹部(36)に溜まっている潤滑剤が径方向外方に飛散して、円筒ころ(4)の底面と底面案内面(23)(24)との間の潤滑に寄与する潤滑剤が少なくなるが、潤滑剤の径方向外方への飛散が潤滑剤保持用凸部(38)によって防止されることで、潤滑性がより向上している。潤滑剤保持用凸部(38)の突出量は、案内用凸部(37)の突出量よりわずかに小さいことから、潤滑剤保持用凸部(38)は円筒ころ(4)の底面(7)(8)に接触することはなく、円筒ころ(4)の底面(7)(8)と底面案内面(23)(24)との間の摩擦力に影響を及ぼさないようになっている。   The radially outer portion of each lubricant retaining recess (36) has a protruding amount slightly smaller than the protruding amount of the guiding convex portion (37), and the radially outer side of the lubricant in the recessed portion (36). A lubricant holding convex portion (38) that suppresses the movement to the is formed. In the absence of the lubricant retaining convex portion (38), the lubricant accumulated in the concave portion (36) is scattered radially outward by centrifugal force, and the bottom surface and bottom surface guide surface of the cylindrical roller (4). (23) The lubricant that contributes to lubrication with (24) is reduced, but the lubricant is prevented from scattering radially outward by the lubricant retaining projection (38), so that the lubricity is improved. Is more improved. Since the protruding amount of the lubricant holding convex portion (38) is slightly smaller than the protruding amount of the guiding convex portion (37), the lubricant holding convex portion (38) is the bottom surface of the cylindrical roller (4) (7 ) (8) is not touched and does not affect the frictional force between the bottom surface (7) (8) of the cylindrical roller (4) and the bottom guide surface (23) (24). .

なお、上記で図示した円筒ころ軸受(1)は、内輪分離型と称されているもので、その外輪(2)に、円筒ころ(4)の軸方向移動を規制するつばが設けられているが、円筒ころ軸受(1)は、つばが内輪に設けられているものでもよく、上記図示したものに限られるものではない。   The cylindrical roller bearing (1) illustrated above is referred to as an inner ring separation type, and the outer ring (2) is provided with a flange for restricting the axial movement of the cylindrical roller (4). However, the cylindrical roller bearing (1) may have a collar provided on the inner ring, and is not limited to the above-described one.

図１は、この発明による円筒ころ軸受用保持器の実施形態を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of a cylindrical roller bearing retainer according to the present invention. 図２は、この発明による円筒ころ軸受の実施形態を示す横断面図である。FIG. 2 is a cross-sectional view showing an embodiment of the cylindrical roller bearing according to the present invention. 図３は、同縦断面図である。FIG. 3 is a longitudinal sectional view of the same.

符号の説明Explanation of symbols

(1) 円筒ころ軸受
(2) 外輪
(3) 内輪
(4) 円筒ころ
(5) 保持器
(6) 周面（転走面）
(7)(8) 底面
(13) ポケット
(21)(22) 周面案内面
(23)(24) 底面案内面
(31) 潤滑剤保持用凹部
(32) 案内用凸部
(33) 潤滑剤保持用凸部
(36) 凹部
(37) 凸部
(38) 潤滑剤保持用凸部 (1) Cylindrical roller bearing
(2) Outer ring
(3) Inner ring
(4) Cylindrical roller
(5) Cage
(6) Circumferential surface (rolling surface)
(7) (8) Bottom
(13) Pocket
(21) (22) Circumferential guide surface
(23) (24) Bottom guide surface
(31) Recess for retaining lubricant
(32) Guide convex
(33) Lubricant holding projection
(36) Recess
(37) Convex
(38) Lubricant holding projection

Claims (4)

外輪、内輪、両輪の間に配置された複数の円筒ころ、およびこれらの円筒ころを収容する複数のポケットを有している保持器を備えており、保持器の各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受において、
保持器の各周面案内面は、軸方向両側に凹部が形成されることにより得られる少なくとも１つの案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とする円筒ころ軸受。 And an outer ring, an inner ring, a plurality of cylindrical rollers disposed between the two rings, and a cage having a plurality of pockets for accommodating these cylindrical rollers. In the cylindrical roller bearing provided with a pair of peripheral surface guide surfaces for guiding the surface and a pair of bottom surface guide surfaces for guiding the pair of bottom surfaces of the cylindrical rollers,
Each circumferential surface guide surface of the cage has at least one guide convex portion obtained by forming concave portions on both sides in the axial direction, and the lubricant in the concave portion is formed on the radially outer portion of the concave portion. A cylindrical roller bearing characterized in that a lubricant holding convex portion that suppresses the outward movement in the radial direction is formed. 外輪、内輪、両輪の間に配置された複数の円筒ころ、およびこれらの円筒ころを収容する複数のポケットを有している保持器を備えており、保持器の各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受において、
保持器の各底面案内面は、径方向外側の部分に凹部が形成されることにより得られる案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とする円筒ころ軸受。 And an outer ring, an inner ring, a plurality of cylindrical rollers disposed between the two rings, and a cage having a plurality of pockets for accommodating these cylindrical rollers. In the cylindrical roller bearing provided with a pair of peripheral surface guide surfaces for guiding the surface and a pair of bottom surface guide surfaces for guiding the pair of bottom surfaces of the cylindrical rollers,
Each bottom guide surface of the cage has a guide convex portion obtained by forming a concave portion in the radially outer portion, and the radial direction of the lubricant in the concave portion in the radially outer portion of the concave portion. A cylindrical roller bearing characterized in that a convex portion for retaining a lubricant that suppresses outward movement is formed. 円筒ころを収容する複数のポケットが形成されており、各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受用保持器において、
各周面案内面は、軸方向両側に凹部が形成されることにより得られる少なくとも１つの案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とする円筒ころ軸受用保持器。 A plurality of pockets for accommodating the cylindrical rollers are formed, and in each pocket, a pair of peripheral surface guide surfaces for guiding the peripheral surface of the cylindrical rollers and a pair of bottom surfaces for guiding the pair of bottom surfaces of the cylindrical rollers, respectively. In the cylindrical roller bearing retainer provided with the guide surface,
Each circumferential surface guide surface has at least one guide convex portion obtained by forming concave portions on both sides in the axial direction, and radially outside the lubricant in the concave portion on the radially outer portion of the concave portion. A retainer for a cylindrical roller bearing, characterized in that a convex portion for retaining a lubricant that suppresses movement in the direction is formed. 円筒ころを収容する複数のポケットが形成されており、各ポケットに、円筒ころの周面を案内する１対の周面案内面、および円筒ころの１対の底面をそれぞれ案内する１対の底面案内面が設けられている円筒ころ軸受用保持器において、
各底面案内面は、径方向外側の部分に凹部が形成されることにより得られる案内用凸部を有しており、凹部の径方向外側部分に、凹部にある潤滑剤の径方向外方への移動を抑える潤滑剤保持用凸部が形成されていることを特徴とする円筒ころ軸受用保持器。 A plurality of pockets for accommodating the cylindrical rollers are formed, and in each pocket, a pair of peripheral surface guide surfaces for guiding the peripheral surface of the cylindrical rollers and a pair of bottom surfaces for guiding the pair of bottom surfaces of the cylindrical rollers, respectively. In the cylindrical roller bearing retainer provided with the guide surface,
Each bottom guide surface has a guide convex portion obtained by forming a concave portion in the radially outer portion, and radially outward of the lubricant in the concave portion in the radially outer portion of the concave portion. A retainer for a cylindrical roller bearing, wherein a convex portion for retaining a lubricant that suppresses movement of the roller is formed.
JP2006169919A 2006-06-20 2006-06-20 Cylindrical roller bearings and cages for cylindrical roller bearings Expired - Fee Related JP4618197B2 (en)

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DE102010034254B4 (en) * 2009-11-24 2013-02-14 Schaeffler Korea Corp. Cage for a roller bearing
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US20190301533A1 (en) * 2018-03-27 2019-10-03 Jtekt Corporation Cage and roller assembly
WO2024098954A1 (en) * 2022-11-10 2024-05-16 台达电子工业股份有限公司 Rotary bearing assembly and load element thereof

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