我厂在一些自制机床上使用CB型齿轮油泵,原来采用立式安装(图1),由于泵内的滚针轴承仅能承受油液压力差引起的径向力,所以在套合联轴器、传动轴及齿轮本身自重的作用下,泵内齿轮下端面与下端盖的摩擦加剧。逐渐造成齿轮与端盖轴向间隙增大、内泄 I plant in some homemade machine using CB gear pump, the original vertical installation (Figure 1), because the needle roller bearings within the pump can only withstand the radial pressure caused by the oil pressure difference, so the sleeve coupling , The drive shaft and the gear itself under the effect of gravity, the lower end of the pump gear and the lower end of the cover friction. Gradually increase the axial clearance between the gear and the end cap increases, the internal leakage