液压传动在功率小于1千瓦的小型动力头的进给传动中获得了广泛的应用。这是由于液压动力头与其他型式的动力头相比具有一系列明显的优点。在苏联有很多企业制造这种动力头。例如,李哈乔夫汽车厂研制出了电机功率为1千瓦的CT-491/А型小型动力头。这种动力头的进给液压传动在泵的输油量为4.7升/分时能保证工作进给范围为25～400毫米/分,快速移动速度为1米/分。 Hydraulic drives have found wide application in feed drives for small power heads with power ratings less than 1 kW. This is because hydraulic power heads have a number of distinct advantages over other types of power heads. There are many enterprises in the Soviet Union to create such power head. For example, the Lihachov car plant has developed a CT-491 / А small power head with a motor power of 1 kW. This power head feed hydraulic drive in the pump oil volume of 4.7 l / min to ensure that the work of the feed range of 25 to 400 mm / min, fast moving speed of 1 m / min.