PROBLEM TO BE SOLVED: To provide a bearing that easily supplies a lubricant to a large collar face of an inner ring and a large end face of a roller, prolongs a lubrication lifetime and improves abrasion resistance and seizure resistance of the bearing.SOLUTION: The bearing device includes: an outer ring 3 including a plurality of lines of tracks in an inner periphery; a pair of inner rings 2 each including a track in its outer periphery; an inter-inner-ring seat held between the pair of inner rings 2 in an axial direction; a plurality of lines of conical rollers 4 interposed between tracks 2a and 3a of the inner rings 2 and the outer ring 3; a holder 5 for holding the lines of conical rollers 4 at predetermined intervals in a circumferential direction; an oil drainer 11 disposed at an axial end side of the pair of inner rings 2; and a rear lid 10 disposed at an opposite side to the axial end side of the pair of inner rings 2. The holder 5 includes: a large diameter side annular part 5a; a small diameter side annular part 5b and a post part 5c connecting the large diameter side annular part 5a and the small diameter side annular part 5b. The holder 5 is formed in such a manner that a diameter of the large diameter side annular part 5a is enlarged toward the inside of a bearing.
【課題】内輪大鍔面ところ大端面に潤滑剤を供給し易くすると共に、潤滑寿命を延伸させ、軸受の耐摩耗性・耐焼き付き性を向上させる軸受を提供する。【解決手段】内周に複列の軌道を有する外輪3と、それぞれの外周に軌道を有する一対の内輪2と、一対の内輪2の軸方向で挟まれた内輪間座と、内輪2と外輪3の軌道2a、3aとの間に介在する複列の円すいころ4と、各列の円すいころ4を円周方向で所定間隔に保持する保持器5と、一対の内輪2の軸端側に配される油切り11と、一対の内輪2の軸端側とは反対側に配される後蓋10とを備え、保持器5は、大径側環状部5aと、小径側環状部5bと、大径側環状部5aと小径側環状部5bとを連結する柱部5cとを備えるとともに、大径側環状部5aが軸受内部に向かって拡径するように形成されている。【選択図】図3
AXLE BEARING DEVICE
車軸用軸受装置
2015-05-28
Patent
Elektronische Ressource
Japanisch