| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cylindrical roller bearing which can improve a seizing resistance without increasing the size of a bearing, and which can improve an allowable rotational speed. <P>SOLUTION: The cylindrical roller bearing (1) includes a collar (6) having a guide surface (7) for bringing the end face of a roller (4) into a contact guide by an inner ring (2). The diameter of the cylindrical roller (4) is Da, the end face (4a) of the cylindrical roller radially separated at 0.40Da from the central axis of the cylindrical roller is a first roller (A), and the end face (4a) of the cylindrical roller separated at 0.35Da is a second position (B). The end face (4a) of the cylindrical roller is brought into contact with the roller guide surface (7) between the first position (A) and the second position (B), and the end face (4a) of the cylindrical roller has a protruding crowning part (4b) made of a continuous curved line passing through the first position (A) and the second position (B). An angle α formed between a straight line for connecting the first position (A) to the second position (B) and a straight line perpendicular to the central axis of the cylindrical roller is α≤0.5°. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
