For increased accuracy and repeatability, the unit can be supplied with an external anti-backlash POM (polymer) pinion gear which optimizes coupling to the wind turbine's large yaw bull gear.
为了提高其准确度和重复性，该装置被附带一个外部的反侧隙聚甲醛(聚合物)小齿轮，该齿轮可优化风力涡轮机的大偏航从动齿轮。
Since the internal teeth sleeve for the gear coupling is floating with the sun gear in the planetary-stage, coupling gear is made of alloyed steel.
由于齿轮联轴器的内齿套也随行星级中的太阳轮一起浮动，所以联轴器齿轮也采用合金钢材料来制造。
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