| 摘要 |
PURPOSE:To reduce weight and a cost by strongly fixing a bearing having a pulley whose inner diameter is large with width fastening. CONSTITUTION:A bearing 1 having a pulley is fixed to a bracket 2 by means of a bolt 3. An inner ring 4 of the bearing 1 is fitted to a shaft part 2a projected from a bearing engaging stepped surface 2c of the bracket 2. A bearing inner ring 5 is sandwiched between a washer 12 and the bracket stepped surface 2c by fastening a bolt 3 inserted into a bolt hole 10 on a leading end of the shaft part 2a. Length L of the shaft part 2a is reduced compared to a width B of the bearing inner ring by a minute value A deformation rate of the washer 12 is kept low at the time of fastening the bolt 3, and strong fixation can carried out by a regular torque fastening. |
