In order to reduce or eliminate such vibration, it must be provided with counter balanced weights that extend radically from the crankshaft centerline in the opposite direction of the crank arms.
为了减少或降低这种震动，需要把平衡重量从曲轴中心线沿着曲轴臂相反方向安置其上。
2
The crankshafts shown in Fig 1-4 is actually made up of various parts such as main bearing journals, rod journal, crank arm, bearing, counter balanced weight and flywheel end.
It is located on a rotary crank on a crank-balanced pumper and can also be located on the walking beam on the end opposite the well on a beam balanced pumper.