| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling wheel for a crawler-type traveling vehicle adaptable in high-speed traveling, also capable of being facilitated in assembly, and excellent in reliability.SOLUTION: A rolling wheel for configuring a part of a crawler-type traveling vehicle includes a roller 2, a shaft 1, sealing means 41, 42 installed on both ends, and collars 3, 4. In a structure in which bearing means arranged on the left and right sides is configured by a pair of cone roller bearings 11, 12 externally fitted to the shaft 1, in a state of having the cone roller bearings 11, 12 and the sealing means 41, 42 being fitted, pre-loading means 80 for adjusting an axial gap of the cone roller bearings 11, 12 are installed at an axial end of the shaft 1, and a pressing member 85 of the pre-loading means 80 applies preload by deflection force caused by a bolt 62. A change in the preload is reduced after reaching a required preload, whereby simple and favorable gap management means for cone roller bearing can be obtained.SELECTED DRAWING: Figure 1 |
