液压马达特点
从能量转换的观点来看，液压泵与液压马达是可逆工作的液压元件，向任何一种液压泵输入工作液体，都可使其变成液压马达工况；反之，当液压马达的主轴由外力矩驱动旋转时，也可变为液压泵工况。因为它们具有同样的基本结构要素--密闭而又可以周期变化的容积和相应的配油机构。
但是，由于液压马达和液压泵的工作条件不同，对它们的性能要求也不一样，所以同类型的液压马达和液压泵之间，仍存在许多差别。首先液压马达应能够正、反转，因而要求其内部结构对称；液压马达的转速范围需要足够大，特别对它的低稳定转速有一定的要求。因此，它通常都采用滚动轴承或静压滑动轴承；其次液压马达由于在输入压力油条件下工作，因而不必具备自吸能力，但需要一定的初始密封性，才能提供必要的起动转矩。由于存在着这些差别，使得液压马达和液压泵在结构上比较相似，但不能可逆工作。
c先导型溢流阀：主阀弹簧主要用于克服阀芯的摩擦力，弹簧刚度小。当溢流量变化引起主阀弹簧压缩量变化时，弹簧力变化较小，因此阀进口压力变化也较小。调压精度高，广泛应用于高压、大流量系统。 溢流阀的阀芯在移动过程中要受到摩擦力的作用，阀口开大和关小时的摩擦力方向刚好相反，使溢流阀开启时的特性与关闭时的特性产生差异。
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| 墨迪现货 | MDI63F250Z5/30P15SXMA.162 |
| 墨迪现货 | MDI63F256Z5/30P15SXMA.162 |
| 墨迪现货 | MDI63F300Z5/30P15SXMA.162 |
| 墨迪现货 | MDI63F360Z5/30P15SXMA.162 |
| 墨迪现货 | MDI63F400Z5/30P15SXMA.162 |
| 墨迪现货 | MDI63F480Z5/30P15SXMA.162 |
