idler gear bore 中间齿轮孔径
output gear bore 输出齿轮孔
gear bore hole 齿轮内孔
idler gear shaft pilot bore 中间齿轮轴导向孔
It is very difficult to grind tapered bore in a large diameter gear without dedicated equipment.
由于没有专用设备，大直径齿轮锥孔磨削非常困难。
Align adapter bushing or gear operator (3) bore with valve stem (5).
用阀门的阀杆(5)对准适配器衬套或持论操作机构(3)镗孔。
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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