JP2014231900A - Roller bearing - Google Patents

Roller bearing Download PDF

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Publication number
JP2014231900A
JP2014231900A JP2013114187A JP2013114187A JP2014231900A JP 2014231900 A JP2014231900 A JP 2014231900A JP 2013114187 A JP2013114187 A JP 2013114187A JP 2013114187 A JP2013114187 A JP 2013114187A JP 2014231900 A JP2014231900 A JP 2014231900A
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Prior art keywords
roller bearing
roller
crown
inner ring
axial
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許　万領
Manriyou Kiyo
万領 許
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NSK Ltd
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NSK Ltd
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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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Support Of The Bearing (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a tapered roller bearing with improved strength that can be easily manufactured and assembled at low costs.SOLUTION: A crown-shaped machined cage 40 has: an annular part 41 arranged on one axial side of a tapered roller 30; plural column parts 43 extending along an axial core C of the tapered roller 30 at predetermined intervals in a circumferential direction from the other axial face of the annular part 41; and pocket parts defined by circumferential faces 44 of the column parts 43 adjacent to each other in the circumferential direction and the other axial face of the annular part 43, and respectively holding the tapered rollers 30. Length of the column part 43 is set to not less than a half of the length and not more than the entire length of the tapered roller 30. The curvature of both peripheral faces 44 of the column part 43 is set almost identical to a curvature of a rolling face 33 of the tapered roller 30. A snap part 48 for holding the tapered roller 30 in the pocket part in a radial direction projects at its outer peripheral end.

Description

本発明は、ころ軸受に関し、特に王冠形保持器を備えるころ軸受に関する。   The present invention relates to a roller bearing, and more particularly to a roller bearing provided with a crown-shaped cage.

従来、ころ軸受の保持器は、樹脂製のもみ抜き形、金属製のかご形及びピン形が殆どを占めている（例えば、特許文献１〜３参照。）。   Conventionally, most roller bearing cages are made of a resin-made machined shape, a metal cage shape and a pin shape (for example, see Patent Documents 1 to 3).

特開２００２−２２７８４９号公報JP 2002-227849 A 特開２００９−２０４０６３号公報JP 2009-204063 A 特開２００６−１０５２９９号公報JP 2006-105299 A

これらのタイプの保持器は、構造が比較的複雑であるため、製造が容易でなく、製造コストが高い。   These types of cages are relatively complex in structure and are not easy to manufacture and are expensive to manufacture.

特に、樹脂製のもみ抜き形の保持器は、大量生産時には製造コストが抑えられるが、少量生産時には、金型代、管理費用及び測定費用等の製造コストがかなり高くなってしまう。   In particular, the resin-made caged cage can be manufactured at a low cost in mass production, but the production cost such as mold cost, management cost and measurement cost becomes considerably high in small-scale production.

また、金属製のかご形の保持器は、その柱部と、軸方向両側の円環部と、が剛性上の要求で一定の断面寸法が必要とされるため、円錐ころのサイズ及び個数がある程度制限され、軸受の動定格荷重及び静定格荷重が大きくならない。加えて、プレス加工による塑性変形が発生するため、振動衝撃によるポケット隅Ｒ部の亀裂や、柱部及び円環部の割れが発生し易い。   In addition, the cage and the cage made of metal require constant cross-sectional dimensions for the pillar portion and the annular portions on both sides in the axial direction because of rigidity requirements. Limited to some extent, the dynamic load rating and static load rating of the bearing do not increase. In addition, since plastic deformation occurs due to press working, cracks in the pocket corner R portion and cracks in the column portion and the annular portion due to vibration impact are likely to occur.

また、ピン形の保持器は、円錐ころの個数を比較的多くすることが可能であるが、中心線に沿って貫通孔を持つ円錐ころの頭部側（大径側）と尾部側（小径側）に二枚の円環板を挟み、円錐ころと同数のピンで溶接して繋がっているため、製造が困難である。さらに、中・大型軸受にしか採用されず、円錐ころの長さもある程度制限されてしまう。   In addition, the pin-shaped cage allows a relatively large number of tapered rollers, but the head side (large diameter side) and tail side (small diameter) of the tapered roller having a through hole along the center line. Since the two annular plates are sandwiched on the side) and welded with the same number of pins as the tapered rollers, they are difficult to manufacture. Furthermore, it is only used for medium and large bearings, and the length of the tapered roller is limited to some extent.

本発明は前述した課題に鑑みてなされたものであり、その目的は、製造容易であり低コスト化が可能であり、強度向上及び組立容易化が可能なころ軸受を提供することにある。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a roller bearing that is easy to manufacture, can be reduced in cost, and can be improved in strength and facilitated assembling.

本発明の上記目的は、下記の構成により達成される。
（１） 内周面に形成された外輪軌道面を有する外輪と、
外周面に形成された内輪軌道面と、前記内輪軌道面の軸方向一方側に形成された小径鍔部と、前記内輪軌道面の軸方向他方側に形成された大径鍔部と、を有する内輪と、
前記外輪軌道面と前記内輪軌道面との間に、転動自在に配置される複数のころと、
前記複数のころを周方向に所定の間隔で保持する王冠形保持器と、
を備えるころ軸受であって、
前記王冠形保持器は、
前記ころの軸方向一方側に配置される環状部と、
前記環状部の軸方向他方面から周方向に所定の間隔で、前記ころの軸心に沿って延設された複数の柱部と、
周方向に隣り合う前記柱部の周方向面と前記環状部の軸方向他方面とによって画成され、それぞれ前記ころを保持するポケット部と、
を有し、
前記柱部の長さは、前記ころの長さの半分以上且つ全長以下に設定され、
前記柱部の周方向両面は、その曲率が前記ころの転動面の曲率と略等しく設定されると共に、その外周側端部に前記ポケット部内で前記ころを径方向に保持するためのパチン部が凸設される
ことを特徴とするころ軸受。
（２） 前記王冠形保持器は、ころ案内形式、又は内輪案内形式である
ことを特徴とする（１）に記載のころ軸受。
（３） 前記王冠形保持器は、樹脂製であり、成形又は削り加工によって製造される
ことを特徴とする（１）又は（２）に記載のころ軸受。
（４） 前記王冠形保持器は、金属製であり、鋳造又は削り加工によって製造される
ことを特徴とする（１）又は（２）に記載のころ軸受。
（５） 円錐ころ軸受、又は自動調心ころ軸受である
ことを特徴とする（１）〜（３）の何れか１つに記載のころ軸受。 The above object of the present invention can be achieved by the following constitution.
(1) an outer ring having an outer ring raceway surface formed on the inner peripheral surface;
An inner ring raceway surface formed on the outer peripheral surface, a small-diameter flange portion formed on one axial side of the inner ring raceway surface, and a large-diameter flange portion formed on the other axial side of the inner ring raceway surface. Inner ring,
Between the outer ring raceway surface and the inner ring raceway surface, a plurality of rollers arranged to be freely rollable,
A crown-shaped cage that holds the plurality of rollers at predetermined intervals in the circumferential direction;
A roller bearing comprising:
The crown-shaped cage is
An annular portion disposed on one side in the axial direction of the roller;
A plurality of column portions extending along the axial center of the roller at predetermined intervals in the circumferential direction from the other axial surface of the annular portion;
A pocket portion defined by a circumferential surface of the column portion adjacent in the circumferential direction and the other axial surface of the annular portion, each holding the roller;
Have
The length of the column portion is set to be not less than half the length of the roller and not more than the total length,
The circumferential direction both surfaces of the column part are set so that the curvature thereof is substantially equal to the curvature of the rolling surface of the roller, and a snapping part for holding the roller in the radial direction in the pocket part at the outer peripheral side end part Is a roller bearing.
(2) The roller bearing according to (1), wherein the crown-shaped cage is a roller guide type or an inner ring guide type.
(3) The roller bearing according to (1) or (2), wherein the crown-shaped cage is made of resin and is manufactured by molding or cutting.
(4) The roller bearing according to (1) or (2), wherein the crown-shaped cage is made of metal and is manufactured by casting or shaving.
(5) The roller bearing according to any one of (1) to (3), which is a tapered roller bearing or a self-aligning roller bearing.

本発明のころ軸受によれば、王冠形保持器が簡便な構成であるので、製造（成形、鋳造、削り加工）が容易であると共に、低コスト化を実現できる。
また、王冠形保持器の環状部がころの軸方向一方側、すなわち、小径側に配置されるので、サイズを大きくすることができ、強度を向上させることができる。
また、柱部の長さは、ころの長さの半分以上且つ全長以下に設定され、比較的短いため、柱部の根本応力を小さくすることができる。
また、軸受の組立は、王冠形保持器を内輪にセットした後に、ころを柱部の外周側端部のパチン部を介してポケット部に挿入することによって行われるので、非常に簡便である。 According to the roller bearing of the present invention, since the crown-shaped cage has a simple configuration, manufacturing (molding, casting, shaving) is easy and cost reduction can be realized.
Further, since the annular portion of the crown-shaped cage is arranged on one side in the axial direction of the roller, that is, on the small diameter side, the size can be increased and the strength can be improved.
Further, the length of the column portion is set to be not less than half the length of the roller and not more than the entire length, and is relatively short, so that the fundamental stress of the column portion can be reduced.
Further, the assembly of the bearing is very simple because it is performed by setting the crown-shaped cage on the inner ring and then inserting the roller into the pocket portion via the snapping portion at the outer peripheral side end portion of the column portion.

円錐ころ軸受の部分断面図である。It is a fragmentary sectional view of a tapered roller bearing. 王冠形もみ抜き保持器の部分断面図である。It is a fragmentary sectional view of a crown-shaped machined cage. 王冠形もみ抜き保持器の要部断面図である。It is principal part sectional drawing of a crown-shaped machined cage. 自動調心ころ軸受の部分断面図である。It is a fragmentary sectional view of a self-aligning roller bearing. 王冠形もみ抜き保持器の要部断面図である。It is principal part sectional drawing of a crown-shaped machined cage. 変形例に係る円錐ころ軸受の部分断面図である。It is a fragmentary sectional view of the tapered roller bearing which concerns on a modification. 変形例に係る王冠形もみ抜き保持器の要部断面図である。It is principal part sectional drawing of the crown-shaped machined cage which concerns on a modification. 変形例に係る自動調心ころ軸受の部分断面図である。It is a fragmentary sectional view of the self-aligning roller bearing which concerns on a modification. 変形例に係る王冠形もみ抜き保持器の要部断面図である。It is principal part sectional drawing of the crown-shaped machined cage which concerns on a modification.

以下、本発明に係るころ軸受の実施形態を図面に基づいて詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a roller bearing according to the present invention will be described in detail with reference to the drawings.

図１には、本発明の実施形態に係る円錐ころ軸受１が示されている。この円錐ころは、鉄道車両、自動車、建設機械、鉄鋼圧延機等の各種産業機器の回転軸を回転支持するために好適に用いられる。   FIG. 1 shows a tapered roller bearing 1 according to an embodiment of the present invention. This tapered roller is suitably used for rotationally supporting the rotating shaft of various industrial equipment such as railway vehicles, automobiles, construction machines, and steel rolling mills.

円錐ころ軸受１は、内周面に形成された外輪軌道面１１を有する外輪１０と、外周面に形成された内輪軌道面２１と、内輪軌道面２１の軸方向一方側（図１中、左側）に形成された小径鍔部２２と、内輪軌道面２１の軸方向他方側（図１中、右側）に形成された大径鍔部２３と、を有する内輪２０と、外輪軌道面１１と内輪軌道面２１との間に転動自在に配置される複数の円錐ころ３０と、複数の円錐ころ３０を周方向に所定の間隔で保持する王冠形もみ抜き保持器４０と、を備える。   The tapered roller bearing 1 includes an outer ring 10 having an outer ring raceway surface 11 formed on the inner peripheral surface, an inner ring raceway surface 21 formed on the outer peripheral surface, and one axial direction side of the inner ring raceway surface 21 (left side in FIG. 1). ) Formed on the other side in the axial direction of the inner ring raceway surface 21 (right side in FIG. 1), an inner ring 20 having an outer ring raceway surface 11 and an inner ring. A plurality of tapered rollers 30 that are rotatably arranged between the raceway surface 21 and a crown-shaped machined cage 40 that holds the plurality of tapered rollers 30 at a predetermined interval in the circumferential direction.

内輪２０の小径鍔部２２及び大径鍔部２３は、それぞれ円錐ころ３０の小径側端面３１（尾部面）及び大径側端面３２（頭部面）に滑り接触し、当該円錐ころ３０を軸方向に位置決めする。   The small diameter flange 22 and the large diameter flange 23 of the inner ring 20 are in sliding contact with the small diameter side end surface 31 (tail surface) and the large diameter side end surface 32 (head surface) of the tapered roller 30, respectively. Position in the direction.

また、内輪２０の外周面において、内輪軌道面２１と小径鍔部２２及び大径鍔部２３とを接続する一対の角部には、それぞれ周方向に沿って内輪逃げ溝２４、２５が凹設される。   Further, on the outer peripheral surface of the inner ring 20, inner ring escape grooves 24 and 25 are recessed along the circumferential direction at a pair of corners connecting the inner ring raceway surface 21, the small-diameter flange 22 and the large-diameter flange 23, respectively. Is done.

図２及び図３も参照し、王冠形もみ抜き保持器４０は、ころ案内形式であり、円錐ころ３０の軸方向一方側（図１〜３中、左側。小径側。）に配置される環状部４１と、環状部４１の軸方向他方面４２から周方向に所定の間隔で、円錐ころ３０の軸心Ｃに沿って延設された複数の柱部４３と、を有する。   2 and 3, the crown-shaped machined cage 40 is a roller guide type, and is annularly disposed on one side of the tapered roller 30 in the axial direction (left side in FIGS. 1 to 3, the smaller diameter side). And a plurality of column portions 43 extending along the axis C of the tapered roller 30 at a predetermined interval in the circumferential direction from the other axial surface 42 of the annular portion 41.

また、王冠形もみ抜き保持器４０は、周方向の隣り合う柱部４３の互いに対向する周方向面４４と、環状部４１の軸方向他方面４２と、によってポケット部４５が画成され、当該ポケット部４５には円錐ころ３０が保持される。   Further, the crown-shaped machined cage 40 has a pocket portion 45 defined by the circumferential surface 44 of the adjacent circumferential column portions 43 and the other axial surface 42 of the annular portion 41, A tapered roller 30 is held in the pocket portion 45.

ここで、柱部４３の長さ（軸心Ｃに沿った長さ）は、円錐ころ３０の長さの半分以上且つ全長以下に設定され、比較的短く形成される。また、周方向面４４は、軸方向一方側において凹設された凹部４６と、軸方向他方側において曲率が円錐ころ３０の転動面３３と略等しく設定された曲面部４７と、からなる。   Here, the length of the column part 43 (length along the axis C) is set to be not less than half the length of the tapered roller 30 and not more than the entire length, and is formed to be relatively short. The circumferential surface 44 includes a recess 46 that is recessed on one side in the axial direction, and a curved surface portion 47 whose curvature is set substantially equal to the rolling surface 33 of the tapered roller 30 on the other side in the axial direction.

曲面部４７の外周側端部には、パチン部４８が軸心Ｃに沿って凸設されており、当該パチン部４８によって、円錐ころ３０をポケット部４５内で径方向に保持する。すなわち、周方向に対向する一対のパチン部４８間の間隔は、円錐ころ３０の直径よりも僅かに小さく設定されており、円錐ころ３０は、一対のパチン部４８を弾性変形させてポケット部４５に挿入される。   At the outer peripheral side end portion of the curved surface portion 47, a snapping portion 48 is projected along the axis C, and the tapered roller 30 holds the tapered roller 30 in the pocket portion 45 in the radial direction. That is, the interval between the pair of snapping portions 48 opposed in the circumferential direction is set slightly smaller than the diameter of the tapered roller 30, and the tapered roller 30 elastically deforms the pair of snapping portions 48 to form the pocket portion 45. Inserted into.

このように構成された、王冠形もみ抜き保持器４０は、例えば樹脂製である場合は、成形又は削り加工によって製造され、金属製である場合は、鋳造又は削り加工によって製造される。なお、削り加工は、一個の円錐台状の中空円環に施すことによって行われる。   For example, when the crown-shaped machined cage 40 configured as described above is made of resin, the crown-shaped machined cage 40 is manufactured by molding or shaving, and when it is made of metal, it is manufactured by casting or shaving. In addition, the shaving process is performed by applying to a single circular truncated conical circular ring.

また、円錐ころ軸受１の組立は、先ず、王冠形もみ抜き保持器４０を内輪２０の外周側にセットした後に、円錐ころ３０を柱部４３の外周側端部のパチン部４８を介してポケット部４５に挿入することによって行われる。その後、円錐ころ３０の外周側に外輪１０をセットすることによって、組立を完了する。   The tapered roller bearing 1 is assembled by first setting the crown-shaped machined cage 40 on the outer peripheral side of the inner ring 20, and then inserting the tapered roller 30 into the pocket through the pachinko 48 at the outer peripheral end of the column 43. This is done by inserting it into the part 45. Thereafter, the outer ring 10 is set on the outer peripheral side of the tapered roller 30 to complete the assembly.

以上説明したように、本実施形態の円錐ころ軸受１によれば、王冠形もみ抜き保持器４０が簡便な構成であるので、製造（成形、鋳造、削り加工）が容易であると共に、低コスト化を実現できる。
また、王冠形もみ抜き保持器４０の環状部４１が円錐ころ３０の軸方向一方側、すなわち、小径側に配置されるので、サイズを大きくすることができ、強度を向上させることができる。
また、柱部４３の長さは、円錐ころ３０の長さの半分以上且つ全長以下に設定され、比較的短いため、柱部４３の根本応力を小さくすることができる。
また、軸受の組立は、王冠形もみ抜き保持器４０を内輪２０にセットした後に、円錐ころ３０を柱部４３の外周側端部のパチン部４８を介してポケット部４５に挿入することによって行われるので、非常に簡便である。 As described above, according to the tapered roller bearing 1 of the present embodiment, the crown-shaped machined cage 40 has a simple configuration, so that it is easy to manufacture (molding, casting, shaving) and low cost. Can be realized.
Moreover, since the annular part 41 of the crown-shaped machined cage 40 is arranged on one side in the axial direction of the tapered roller 30, that is, on the small diameter side, the size can be increased and the strength can be improved.
Moreover, since the length of the column part 43 is set to be not less than half the length of the tapered roller 30 and not more than the entire length, and is relatively short, the fundamental stress of the column part 43 can be reduced.
The bearing is assembled by setting the crown-shaped machined cage 40 to the inner ring 20 and then inserting the tapered roller 30 into the pocket portion 45 through the snapping portion 48 at the outer peripheral side end portion of the column portion 43. It is very convenient.

なお、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良などが可能である。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

例えば、上述の実施形態においては円錐ころ軸受１を示したが、本発明は、図４及び図５に示すように、球面ころ３０Ａを有する自動調心ころ軸受１Ａに対しても適用可能である。   For example, although the tapered roller bearing 1 is shown in the above-described embodiment, the present invention can be applied to a self-aligning roller bearing 1A having a spherical roller 30A as shown in FIGS. .

また、図６〜図９に示すように、円錐ころ軸受１及び自動調心ころ軸受１Ａの王冠形もみ抜き保持器４０は、内輪案内形式、より具体的には、内輪２０の小径鍔部２２の外周面によって案内される形式であっても構わない。   As shown in FIGS. 6 to 9, the crown-shaped machined cage 40 of the tapered roller bearing 1 and the self-aligning roller bearing 1 </ b> A is an inner ring guide type, more specifically, a small-diameter flange portion 22 of the inner ring 20. It may be in the form guided by the outer peripheral surface of the.

１ 円錐ころ軸受（ころ軸受）
１Ａ 自動調心ころ軸受（ころ軸受）
１０ 外輪
１１ 外輪軌道面
２０ 内輪
２１ 内輪軌道面
２２ 小径鍔部
２３ 大径鍔部
２４、２５ 内輪逃げ溝
３０ 円錐ころ（ころ）
３０Ａ 球面ころ（ころ）
３１ 小径側端面
３２ 大径側端面
３３ 転動面
４０ 王冠形もみ抜き保持器（王冠形保持器）
４１ 環状部
４２ 軸方向他方面
４３ 柱部
４４ 周方向面
４５ ポケット部
４６ 凹部
４７ 曲面部
４８ パチン部
Ｃ 軸心 1 Tapered roller bearing (Roller bearing)
1A Spherical roller bearing (Roller bearing)
DESCRIPTION OF SYMBOLS 10 Outer ring 11 Outer ring raceway surface 20 Inner ring 21 Inner ring raceway surface 22 Small diameter flange 23 Large diameter flange 24, 25 Inner ring relief groove 30 Tapered roller (roller)
30A spherical roller (roller)
31 Small-diameter side end surface 32 Large-diameter side end surface 33 Rolling surface 40 Crown-shaped machined cage (crown-shaped cage)
41 Annular portion 42 Axial other surface 43 Column 44 Circumferential surface 45 Pocket portion 46 Recessed portion 47 Curved portion 48 Pachin portion C Axis center

Claims (5)

内周面に形成された外輪軌道面を有する外輪と、
外周面に形成された内輪軌道面と、前記内輪軌道面の軸方向一方側に形成された小径鍔部と、前記内輪軌道面の軸方向他方側に形成された大径鍔部と、を有する内輪と、
前記外輪軌道面と前記内輪軌道面との間に、転動自在に配置される複数のころと、
前記複数のころを周方向に所定の間隔で保持する王冠形保持器と、
を備えるころ軸受であって、
前記王冠形保持器は、
前記ころの軸方向一方側に配置される環状部と、
前記環状部の軸方向他方面から周方向に所定の間隔で、前記ころの軸心に沿って延設された複数の柱部と、
周方向に隣り合う前記柱部の周方向面と前記環状部の軸方向他方面とによって画成され、それぞれ前記ころを保持するポケット部と、
を有し、
前記柱部の長さは、前記ころの長さの半分以上且つ全長以下に設定され、
前記柱部の周方向両面は、その曲率が前記ころの転動面の曲率と略等しく設定されると共に、その外周側端部に前記ポケット部内で前記ころを径方向に保持するためのパチン部が凸設される
ことを特徴とするころ軸受。 An outer ring having an outer ring raceway surface formed on the inner peripheral surface;
An inner ring raceway surface formed on the outer peripheral surface, a small-diameter flange portion formed on one axial side of the inner ring raceway surface, and a large-diameter flange portion formed on the other axial side of the inner ring raceway surface. Inner ring,
Between the outer ring raceway surface and the inner ring raceway surface, a plurality of rollers arranged to be freely rollable,
A crown-shaped cage that holds the plurality of rollers at predetermined intervals in the circumferential direction;
A roller bearing comprising:
The crown-shaped cage is
An annular portion disposed on one side in the axial direction of the roller;
A plurality of column portions extending along the axial center of the roller at predetermined intervals in the circumferential direction from the other axial surface of the annular portion;
A pocket portion defined by a circumferential surface of the column portion adjacent in the circumferential direction and the other axial surface of the annular portion, each holding the roller;
Have
The length of the column portion is set to be not less than half the length of the roller and not more than the total length,
The circumferential direction both surfaces of the column part are set so that the curvature thereof is substantially equal to the curvature of the rolling surface of the roller, and a snapping part for holding the roller in the radial direction in the pocket part at the outer peripheral side end part Is a roller bearing. 前記王冠形保持器は、ころ案内形式、又は内輪案内形式である
ことを特徴とする請求項１に記載のころ軸受。 The roller bearing according to claim 1, wherein the crown-shaped cage is a roller guide type or an inner ring guide type. 前記王冠形保持器は、樹脂製であり、成形又は削り加工によって製造される
ことを特徴とする請求項１又は２に記載のころ軸受。 The roller bearing according to claim 1 or 2, wherein the crown-shaped cage is made of resin and is manufactured by molding or cutting. 前記王冠形保持器は、金属製であり、鋳造又は削り加工によって製造される
ことを特徴とする請求項１又は２に記載のころ軸受。 The roller bearing according to claim 1 or 2, wherein the crown-shaped cage is made of metal and is manufactured by casting or shaving. 円錐ころ軸受、又は自動調心ころ軸受である
ことを特徴とする請求項１〜３の何れか１項に記載のころ軸受。 The roller bearing according to any one of claims 1 to 3, wherein the roller bearing is a tapered roller bearing or a self-aligning roller bearing.
JP2013114187A 2013-05-30 2013-05-30 Roller bearing Pending JP2014231900A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227548A4 (en) * 2021-12-28 2023-09-06 GUO, Hong jun Angular contact self-aligning roller bearing

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720450A (en) * 1971-04-05 1973-03-13 Timken Co Tapered roller retainer and method of bearing assembly
JP2005098521A (en) * 1997-10-01 2005-04-14 Nsk Ltd Synthetic resin-made retainer for roller bearing and roller bearing
JP2005127493A (en) * 2003-09-30 2005-05-19 Ntn Corp Cylindrical roller bearing
JP2010019284A (en) * 2008-07-08 2010-01-28 Nsk Ltd Retainer for conical roller bearing, and conical roller bearing
JP2011002077A (en) * 2009-06-22 2011-01-06 Nsk Ltd Rolling bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720450A (en) * 1971-04-05 1973-03-13 Timken Co Tapered roller retainer and method of bearing assembly
JP2005098521A (en) * 1997-10-01 2005-04-14 Nsk Ltd Synthetic resin-made retainer for roller bearing and roller bearing
JP2005127493A (en) * 2003-09-30 2005-05-19 Ntn Corp Cylindrical roller bearing
JP2010019284A (en) * 2008-07-08 2010-01-28 Nsk Ltd Retainer for conical roller bearing, and conical roller bearing
JP2011002077A (en) * 2009-06-22 2011-01-06 Nsk Ltd Rolling bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227548A4 (en) * 2021-12-28 2023-09-06 GUO, Hong jun Angular contact self-aligning roller bearing

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