| 摘要 |
PROBLEM TO BE SOLVED: To improve lubrication of the bearings in the final drive device for crawler of civil engineering machine and construction machine. SOLUTION: This bearing lubricating device 10 for a final drive device 12 is provided with a first housing 14 and a second housing 16 combined with the first housing 14, and a first chamber 30 and a second chamber 32 are respectively defined by the first and second housings. A rotational gear 24 and a pinion 18 are rotatably fitted in the first chamber, and a bore 40 is formed so as to penetrate through in the lengthwise direction of the shaft part of the pinion 18. The shaft part is fitted to first and second bearing compound bodies 20, 22 provided on the first and second housings. A ring member 26 is arranged between the end part 42 of the shaft part 40 and the first housing 14.
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