螺杆衬套
螺杆衬套(包括起着螺杆衬套作用的泵体，即泵体和螺杆衬套合二为一的结构，它多数用于小泵或不重要的场合)的作用是将三根螺杆装配在它的三个内孔之中，用其内孔包容螺杆螺旋啮合形成的密封腔，从而将其两端的吸入腔和排出腔有效地隔开。封闭在螺杆衬套孔内的螺杆螺旋的有效长度称为工作长度。所谓有效长度是指能确保螺杆螺旋段形成密封腔的起始位置(在吸入腔一端)和最终位置(在排出腔一端)之间的实际尺寸。显然螺杆衬套内孔两端或螺杆螺旋两端若存在圆角或倒角的轴向长度尺寸是不能计算在内的，因为这两个尺寸不能起到封闭密封腔的作用
HSA螺杆泵型号三：
HSA20R38U4PY HSAF20R38U4PY HSAD20R38U4PY HSAFK20R38U4PY HSAS20R38U4PY
HSA20R46U4PY HSAF20R46U4PY HSAD20R46U4PY HSAFK20R46U4PY HSAS20R46U4PY
HSA40R38U4PY HSAF40R38U4PY HSAD40R38U4PY HSAFK40R38U4PY HSAS40R38U4PY
HSA40R46U4PY HSAF40R46U4PY HSAD40R46U4PY HSAFK40R46U4PY HSAS40R46U4PY
HSA80R36U4PY HSAF80R36U4PY HSAD80R36U4PY HSAFK80R36U4PY HSAS80R36U4PY
HSA80R46U4PY HSAF80R46U4PY HSAD80R46U4PY HSAFK80R46U4PY HSAS80R46U4PY
HSA120R42U4PY HSAF120R42U4PY HSAD120R42U4PY HSAFK120R42U4PY HSAS120R42U4PY
HSA120R46U4PY HSAF120R46U4PY HSAD120R46U4PY HSAFK120R46U4PY HSAS120R46U4PY
HSA210R36U4PY HSAF210R36U4PY HSAD210R36U4PY HSAFK210R36U4PY HSAS210R36U4PY
HSA210R40U4PY HSAF210R40U4PY HSAD210R40U4PY HSAFK210R40U4PY HSAS210R40U4PY
HSA210R46U4PY HSAF210R46U4PY HSAD210R46U4PY HSAFK210R46U4PY HSAS210R46U4PY
HSA280R43U4PY HSAF280R43U4PY HSAD280R43U4PY HSAFK280R43U4PY HSAS280R43U4PY
HSA280R46U4PY HSAF280R46U4PY HSAD280R46U4PY HSAFK280R46U4PY HSAS280R46U4PY
HSA440R36U4PY HSAF440R36U4PY HSAD440R36U4PY HSAFK440R36U4PY HSAS440R36U4PY
HSA440R40U4PY HSAF440R40U4PY HSAD440R40U4PY HSAFK440R40U4PY HSAS440R40U4PY
HSA440R46U4PY HSAF440R46U4PY HSAD440R46U4PY HSAFK440R46U4PY HSAS440R46U4PY
HSA660R40U4PY HSAF660R40U4PY HSAD660R40U4PY HSAFK660R40U4PY HSAS660R40U4PY
HSA660R44U4PY HSAF660R44U4PY HSAD660R44U4PY HSAFK660R44U4PY HSAS660R44U4PY
