Semi-axis formula driven roll

The utility model discloses a semi-axis formula driven roll, the novel nipple rectifier comprises a cylindrical shel, the left-hand cylinder hub, right side section of thick bamboo hub, the left half axle, right side semi-axis, left side bearing frame and right bearing frame, the barrel left end links firmly with the left-hand cylinder hub, the barrel right-hand member links firmly with right side section of thick bamboo hub, be fixed with polylith deep floor along length direction on the barrel inner wall, the polylith deep floor evenly lay, install left bearing in the bearing frame of a left side, install right bearing in the bearing frame of the right side, left half axle right-hand member and left-hand cylinder hub centre bore interference fit, left half axle left end and left bearing inner race be assembled between/be connected between, be equipped with rather than the communicating left oil cup in inside on the bearing frame end cover of a left side, right side semi-axis left end and right side section of thick bamboo hub centre bore interference fit, left half axle right-hand member and right bearing inner race be assembled between/be connected between, be equipped with rather than the communicating right oil cup in inside on the bearing frame end cover of the right side. The utility model has the advantages of simple structure and reasonable design and use convenient operation, semi-axis and section of thick bamboo hub interference fit, it is high to connect the reliability, and bearing lubrication is convenient, uses the noise little, bearing and barrel long service life.