直线导轨THKDPM4068DPM4555
花键滚珠螺母DPM4068
花键丝杠滚珠梯形
花键滚珠DPM4068DPM4555
花键滚珠螺母DPM4555
梯形花键轴花键导轨
DPM直线导轨THK4068
DPMTHKDPM50805060
花键DPM255030403056