| 摘要 |
PROBLEM TO BE SOLVED: To improve the muddy water resistance of a PTO shaft.SOLUTION: A PTO shaft 40 is journaled at A transmission case 12 or a PTO metal attached/detached to/from the transmission case 12. A first seal 50 and a second seal 51 are provided between the transmission case 12 or the PTO metal and an outer periphery of the PTO shaft 40, and a grease filling hole 53 is communicated with an annular space portion formed between the first seal 50 and the second seal 51. The first seal 50 and the second seal 51 respectively have holding portions 50c and 51c holding seal lips 50b and 51b contacting with an outer peripheral surface of the PTO shaft 40 from annular attaching portions 50a and 51a of an outer periphery to the outer peripheral surface. The holding portions 50c and 51c are disposed so as to oppose to each other at a proper interval, thereby forming an annular space portion on an outer peripheral portion of the PTO shaft 40.SELECTED DRAWING: Figure 7 |
