The main drive chain and the bearing chain divide the polished rod load into reverse pumping load and equilibrium load.

主传动链与承载链将悬点载荷分解为换向抽汲载荷与平衡载荷。

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The bearing chain bears the equilibrium load to reduce the force on the main drive chain to a great degree.

承载链直接承受平衡载荷，可大幅度减小主传动链的受力。

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Prefer those with experience in system engineering for drive chain integration of metros, intercity trains or locomotives.

具有地铁、城际列车、机车的驱动链综合系统工程经验者优先考虑。

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BB-mounted systems, for instance, drive from the chain rings, meaning potential loss through the rings and chain, while also increasing wear on these components.

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