The axles run in two-row self aligning ball bearings on the gear side, and a standard sealed ball race on the other end in the sprung axle box, both 12mm bore.
两轴运行的排调心方对球轴承齿轮，和一个标准就在轴箱弹簧的另一端密封球的比赛，两个12毫米口径。
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This article introduces the requirements of aligning to the installation of gear case and construction process, calculating for sheets of epoxy resin chock for gear case on board.