PROBLEM TO BE SOLVED: To provide a bearing for railway vehicle axle capable of holding lubrication performance on a fitting surface of an axle and the inner peripheral surface of an inner ring, and capable of press-fitting the inner ring into the axle with proper press-in force without damaging the axle.SOLUTION: A bearing 20 for railway vehicle axle has an outer ring 21, an inner ring 22 and a plurality of rolling bodies 23, and rotatably supports an axle 50 to the end part of which the wheel of a railway vehicle is attached. Between an inner peripheral surface 22a and an end surface 22b of the inner rings 22, 22, formed is a tapered chamfer part 22c of which the diameter becomes larger toward its end surface at an angle α of 10-12° to the inner peripheral surface 22a.SELECTED DRAWING: Figure 3
【課題】車軸と内輪の内周面との嵌め合い面での潤滑性能を保持することができ、車軸を損傷することなく、内輪を車軸に適正な圧入力で圧入することができる鉄道車両車軸用軸受を提供する。【解決手段】鉄道車両車軸用軸受20は、外輪21、内輪22、及び複数の転動体23を有し、鉄道車両の車輪が端部に取り付けられる車軸50を回転自在に支持する。内輪22,22の内周面22aと端面22bとの間には、該内周面22aに対して10〜12°の角度αで端面側に拡径するテーパ形状の面取り部22cが施される。【選択図】図3
BEARING FOR RAILWAY VEHICLE AXLE
鉄道車両車軸用軸受
2016-12-08
Patent
Elektronische Ressource
Japanisch