JP2016070346A5

JP2016070346A5 -

Info

Publication number: JP2016070346A5
Application number: JP2014199233A
Authority: JP
Filing date: 2014-09-29
Publication date: 2017-11-09

Description

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、保持器自重の小さい一体型保持器を用い、負荷圏におけるポケット部のＰＶ値を低減させ、保持器の摩耗進展を抑制することができる円筒ころ軸受を提供することにある。 The present invention has been made in view of the problems described above, and its object is used a small piece Kataho lifting device of retainer own weight, reducing the PV value of the pocket portion in the load zone, the wear progress of the cage It is providing the cylindrical roller bearing which can suppress this.

本発明の上記目的は、下記の構成により達成される。
（１）内周面に外輪軌道面を有する外輪と、
外周面に内輪軌道面を有する内輪と、
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円筒ころと、
一対の円環部、及び、該一対の円環部との間を繋ぐ、円周方向に所定の間隔で設けられた複数の柱部を備え、隣接する前記柱部と前記一対の円環部とによってポケットを形成する金属製の一体型保持器と、
を備える円筒ころ軸受であって、
前記一体型保持器では、前記ポケットの内径部開口寸法が、前記ポケットの外径部開口寸法よりも大きく、且つ、前記ポケットのピッチ円直径位置での幅より小さいことを特徴とする円筒ころ軸受。 The above object of the present invention can be achieved by the following constitution.
(1) an outer ring having an outer ring raceway surface on the inner circumferential surface;
An inner ring having an inner ring raceway surface on the outer peripheral surface;
A plurality of cylindrical rollers arranged to roll freely between the outer ring raceway surface and the inner ring raceway surface;
A pair of annular portions, and a plurality of pillar portions provided at predetermined intervals in the circumferential direction that connect between the pair of annular portions, the adjacent pillar portions and the pair of annular portions integral Kataho lifting device metal to form a pocket by a,
A cylindrical roller bearing comprising:
And in the integral Kataho lifting device, the inner diameter opening size of the pocket is larger than the outer diameter opening size of the pocket and the roller cylinder and is smaller than the width of a pitch circle diameter position of the pocket bearing.

本発明の円筒ころ軸受によれば、一体型保持器を用いることで、保持器自重を低減することができ、また、ポケットの内径部開口寸法が、ポケットの外径部開口寸法よりも大きいので、非負荷圏にてポケットが円筒ころを支持することができ、負荷圏におけるポケットのころ接触部のＰＶ値を低減させ、保持器の摩耗進展を抑制することができる。
また、ポケットの内径部開口寸法が、ポケットのピッチ円直径位置での幅より小さいので、円筒ころの抜け止めを行うことができる。 Cylindrical roller bearing according to the present invention, by using the integral Kataho lifting device, it is possible to reduce the retainer own weight, also it is larger than the outer diameter opening size of the pocket bore opening size of the pocket Therefore, the pocket can support the cylindrical roller in the non-load zone, the PV value of the roller contact portion of the pocket in the load zone can be reduced, and the wear progress of the cage can be suppressed.
Further, since the opening size of the inner diameter portion of the pocket is smaller than the width at the pitch circle diameter position of the pocket, the cylindrical roller can be prevented from coming off.

Claims

An outer ring having an outer ring raceway surface on the inner circumferential surface;
An inner ring having an inner ring raceway surface on the outer peripheral surface;
A plurality of cylindrical rollers arranged to roll freely between the outer ring raceway surface and the inner ring raceway surface;
A pair of annular portions, and a plurality of pillar portions provided at predetermined intervals in the circumferential direction that connect between the pair of annular portions, the adjacent pillar portions and the pair of annular portions integral Kataho lifting device metal to form a pocket by a,
A cylindrical roller bearing comprising:
And in the integral Kataho lifting device, the inner diameter opening size of the pocket is larger than the outer diameter opening size of the pocket and the roller cylinder and is smaller than the width of a pitch circle diameter position of the pocket bearing.